Rust 2018

Cargo.toml

@@ -2,6 +2,7 @@
 name = "rusqlite"
 version = "0.15.0"
 authors = ["John Gallagher <jgallagher@bignerdranch.com>"]
+edition = "2018"
 description = "Ergonomic wrapper for SQLite"
 repository = "https://github.com/jgallagher/rusqlite"
 documentation = "http://docs.rs/rusqlite/"

libsqlite3-sys/Cargo.toml

@@ -2,6 +2,7 @@
 name = "libsqlite3-sys"
 version = "0.10.0"
 authors = ["John Gallagher <jgallagher@bignerdranch.com>"]
+edition = "2018"
 repository = "https://github.com/jgallagher/rusqlite"
 description = "Native bindings to the libsqlite3 library"
 license = "MIT"

src/backup.rs

@@ -23,8 +23,8 @@
 //!     dst: P,
 //!     progress: fn(backup::Progress),
 //! ) -> Result<()> {
-//!     let mut dst = try!(Connection::open(dst));
+//!     let mut dst = Connection::open(dst)?;
-//!     let backup = try!(backup::Backup::new(src, &mut dst));
+//!     let backup = backup::Backup::new(src, &mut dst)?;
 //!     backup.run_to_completion(5, time::Duration::from_millis(250), Some(progress))
 //! }
 //! ```
@@ -37,10 +37,10 @@ use std::os::raw::c_int;
 use std::thread;
 use std::time::Duration;
 
-use ffi;
+use crate::ffi;
 
-use error::{error_from_handle, error_from_sqlite_code};
+use crate::error::{error_from_handle, error_from_sqlite_code};
-use {Connection, DatabaseName, Result};
+use crate::{Connection, DatabaseName, Result};
 
 impl Connection {
     /// Back up the `name` database to the given destination path.
@@ -62,17 +62,17 @@ impl Connection {
         progress: Option<fn(Progress)>,
     ) -> Result<()> {
         use self::StepResult::{Busy, Done, Locked, More};
-        let mut dst = try!(Connection::open(dst_path));
+        let mut dst = Connection::open(dst_path)?;
-        let backup = try!(Backup::new_with_names(
+        let backup = Backup::new_with_names(
             self,
             name,
             &mut dst,
             DatabaseName::Main
-        ));
+        )?;
 
         let mut r = More;
         while r == More {
-            r = try!(backup.step(100));
+            r = backup.step(100)?;
             if let Some(f) = progress {
                 f(backup.progress());
             }
@@ -105,13 +105,13 @@ impl Connection {
         progress: Option<F>,
     ) -> Result<()> {
         use self::StepResult::{Busy, Done, Locked, More};
-        let src = try!(Connection::open(src_path));
+        let src = Connection::open(src_path)?;
-        let restore = try!(Backup::new_with_names(&src, DatabaseName::Main, self, name));
+        let restore = Backup::new_with_names(&src, DatabaseName::Main, self, name)?;
 
         let mut r = More;
         let mut busy_count = 0i32;
         'restore_loop: while r == More || r == Busy {
-            r = try!(restore.step(100));
+            r = restore.step(100)?;
             if let Some(ref f) = progress {
                 f(restore.progress());
             }
@@ -201,8 +201,8 @@ impl<'a, 'b> Backup<'a, 'b> {
         to: &'b mut Connection,
         to_name: DatabaseName,
     ) -> Result<Backup<'a, 'b>> {
-        let to_name = try!(to_name.to_cstring());
+        let to_name = to_name.to_cstring()?;
-        let from_name = try!(from_name.to_cstring());
+        let from_name = from_name.to_cstring()?;
 
         let to_db = to.db.borrow_mut().db;
 
@@ -287,7 +287,7 @@ impl<'a, 'b> Backup<'a, 'b> {
         assert!(pages_per_step > 0, "pages_per_step must be positive");
 
         loop {
-            let r = try!(self.step(pages_per_step));
+            let r = self.step(pages_per_step)?;
             if let Some(progress) = progress {
                 progress(self.progress())
             }
@@ -309,7 +309,7 @@ impl<'a, 'b> Drop for Backup<'a, 'b> {
 mod test {
     use super::Backup;
     use std::time::Duration;
-    use {Connection, DatabaseName, NO_PARAMS};
+    use crate::{Connection, DatabaseName, NO_PARAMS};
 
     #[test]
     fn test_backup() {

src/blob.rs

@@ -64,7 +64,7 @@ use std::ptr;
 
 use super::ffi;
 use super::types::{ToSql, ToSqlOutput};
-use {Connection, DatabaseName, Result};
+use crate::{Connection, DatabaseName, Result};
 
 /// Handle to an open BLOB.
 pub struct Blob<'conn> {
@@ -92,9 +92,9 @@ impl Connection {
     ) -> Result<Blob<'a>> {
         let mut c = self.db.borrow_mut();
         let mut blob = ptr::null_mut();
-        let db = try!(db.to_cstring());
+        let db = db.to_cstring()?;
-        let table = try!(super::str_to_cstring(table));
+        let table = super::str_to_cstring(table)?;
-        let column = try!(super::str_to_cstring(column));
+        let column = super::str_to_cstring(column)?;
         let rc = unsafe {
             ffi::sqlite3_blob_open(
                 c.db(),
@@ -263,15 +263,15 @@ impl ToSql for ZeroBlob {
 #[cfg(test)]
 mod test {
     use std::io::{BufRead, BufReader, BufWriter, Read, Seek, SeekFrom, Write};
-    use {Connection, DatabaseName, Result};
+    use crate::{Connection, DatabaseName, Result};
 
     fn db_with_test_blob() -> Result<(Connection, i64)> {
-        let db = try!(Connection::open_in_memory());
+        let db = Connection::open_in_memory()?;
         let sql = "BEGIN;
                    CREATE TABLE test (content BLOB);
                    INSERT INTO test VALUES (ZEROBLOB(10));
                    END;";
-        try!(db.execute_batch(sql));
+        db.execute_batch(sql)?;
         let rowid = db.last_insert_rowid();
         Ok((db, rowid))
     }

src/busy.rs

@@ -4,8 +4,8 @@ use std::os::raw::{c_int, c_void};
 use std::ptr;
 use std::time::Duration;
 
-use ffi;
+use crate::ffi;
-use {Connection, InnerConnection, Result};
+use crate::{Connection, InnerConnection, Result};
 
 impl Connection {
     /// Set a busy handler that sleeps for a specified amount of time when a
@@ -81,7 +81,7 @@ mod test {
     use std::thread;
     use std::time::Duration;
 
-    use {Connection, Error, ErrorCode, TransactionBehavior, NO_PARAMS};
+    use crate::{Connection, Error, ErrorCode, TransactionBehavior, NO_PARAMS};
 
     #[test]
     fn test_default_busy() {

src/cache.rs

@@ -1,10 +1,10 @@
 //! Prepared statements cache for faster execution.
 
 use lru_cache::LruCache;
-use raw_statement::RawStatement;
+use crate::raw_statement::RawStatement;
 use std::cell::RefCell;
 use std::ops::{Deref, DerefMut};
-use {Connection, Result, Statement};
+use crate::{Connection, Result, Statement};
 
 impl Connection {
     /// Prepare a SQL statement for execution, returning a previously prepared
@@ -16,14 +16,14 @@ impl Connection {
     /// # use rusqlite::{Connection, Result};
     /// fn insert_new_people(conn: &Connection) -> Result<()> {
     ///     {
-    ///         let mut stmt = try!(conn.prepare_cached("INSERT INTO People (name) VALUES (?)"));
+    ///         let mut stmt = conn.prepare_cached("INSERT INTO People (name) VALUES (?)")?;
-    ///         try!(stmt.execute(&["Joe Smith"]));
+    ///         stmt.execute(&["Joe Smith"])?;
     ///     }
     ///     {
     ///         // This will return the same underlying SQLite statement handle without
     ///         // having to prepare it again.
-    ///         let mut stmt = try!(conn.prepare_cached("INSERT INTO People (name) VALUES (?)"));
+    ///         let mut stmt = conn.prepare_cached("INSERT INTO People (name) VALUES (?)")?;
-    ///         try!(stmt.execute(&["Bob Jones"]));
+    ///         stmt.execute(&["Bob Jones"])?;
     ///     }
     ///     Ok(())
     /// }
@@ -152,7 +152,7 @@ impl StatementCache {
 #[cfg(test)]
 mod test {
     use super::StatementCache;
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     impl StatementCache {
         fn clear(&self) {

src/context.rs

@@ -5,14 +5,14 @@ use std::os::raw::{c_char, c_int, c_void};
 #[cfg(feature = "array")]
 use std::rc::Rc;
 
-use ffi;
+use crate::ffi;
-use ffi::sqlite3_context;
+use crate::ffi::sqlite3_context;
-use ffi::sqlite3_value;
+use crate::ffi::sqlite3_value;
 
-use str_to_cstring;
+use crate::str_to_cstring;
-use types::{ToSqlOutput, ValueRef};
+use crate::types::{ToSqlOutput, ValueRef};
 #[cfg(feature = "array")]
-use vtab::array::{free_array, ARRAY_TYPE};
+use crate::vtab::array::{free_array, ARRAY_TYPE};
 
 impl<'a> ValueRef<'a> {
     pub(crate) unsafe fn from_value(value: *mut sqlite3_value) -> ValueRef<'a> {

src/error.rs

@@ -3,8 +3,8 @@ use std::fmt;
 use std::os::raw::c_int;
 use std::path::PathBuf;
 use std::str;
-use types::Type;
+use crate::types::Type;
-use {errmsg_to_string, ffi};
+use crate::{errmsg_to_string, ffi};
 
 /// Old name for `Error`. `SqliteError` is deprecated.
 #[deprecated(since = "0.6.0", note = "Use Error instead")]

src/functions.rs

@@ -20,7 +20,7 @@
 //! fn add_regexp_function(db: &Connection) -> Result<()> {
 //!     let mut cached_regexes = HashMap::new();
 //!     db.create_scalar_function("regexp", 2, true, move |ctx| {
-//!         let regex_s = try!(ctx.get::<String>(0));
+//!         let regex_s = ctx.get::<String>(0)?;
 //!         let entry = cached_regexes.entry(regex_s.clone());
 //!         let regex = {
 //!             use std::collections::hash_map::Entry::{Occupied, Vacant};
@@ -33,7 +33,7 @@
 //!             }
 //!         };
 //!
-//!         let text = try!(ctx.get::<String>(1));
+//!         let text = ctx.get::<String>(1)?;
 //!         Ok(regex.is_match(&text))
 //!     })
 //! }
@@ -58,14 +58,14 @@ use std::os::raw::{c_int, c_void};
 use std::ptr;
 use std::slice;
 
-use ffi;
+use crate::ffi;
-use ffi::sqlite3_context;
+use crate::ffi::sqlite3_context;
-use ffi::sqlite3_value;
+use crate::ffi::sqlite3_value;
 
-use context::set_result;
+use crate::context::set_result;
-use types::{FromSql, FromSqlError, ToSql, ValueRef};
+use crate::types::{FromSql, FromSqlError, ToSql, ValueRef};
 
-use {str_to_cstring, Connection, Error, InnerConnection, Result};
+use crate::{str_to_cstring, Connection, Error, InnerConnection, Result};
 
 unsafe fn report_error(ctx: *mut sqlite3_context, err: &Error) {
     // Extended constraint error codes were added in SQLite 3.7.16. We don't have
@@ -198,14 +198,14 @@ where
 
     /// "step" function called once for each row in an aggregate group. May be
     /// called 0 times if there are no rows.
-    fn step(&self, &mut Context, &mut A) -> Result<()>;
+    fn step(&self, _: &mut Context, _: &mut A) -> Result<()>;
 
     /// Computes and returns the final result. Will be called exactly once for
     /// each invocation of the function. If `step()` was called at least
     /// once, will be given `Some(A)` (the same `A` as was created by
     /// `init` and given to `step`); if `step()` was not called (because
     /// the function is running against 0 rows), will be given `None`.
-    fn finalize(&self, Option<A>) -> Result<T>;
+    fn finalize(&self, _: Option<A>) -> Result<T>;
 }
 
 impl Connection {
@@ -224,12 +224,12 @@ impl Connection {
     /// ```rust
     /// # use rusqlite::{Connection, Result, NO_PARAMS};
     /// fn scalar_function_example(db: Connection) -> Result<()> {
-    ///     try!(db.create_scalar_function("halve", 1, true, |ctx| {
+    ///     db.create_scalar_function("halve", 1, true, |ctx| {
-    ///         let value = try!(ctx.get::<f64>(0));
+    ///         let value = ctx.get::<f64>(0)?;
     ///         Ok(value / 2f64)
-    ///     }));
+    ///     })?;
     ///
-    ///     let six_halved: f64 = try!(db.query_row("SELECT halve(6)", NO_PARAMS, |r| r.get(0)));
+    ///     let six_halved: f64 = db.query_row("SELECT halve(6)", NO_PARAMS, |r| r.get(0))?;
     ///     assert_eq!(six_halved, 3f64);
     ///     Ok(())
     /// }
@@ -326,7 +326,7 @@ impl InnerConnection {
         }
 
         let boxed_f: *mut F = Box::into_raw(Box::new(x_func));
-        let c_name = try!(str_to_cstring(fn_name));
+        let c_name = str_to_cstring(fn_name)?;
         let mut flags = ffi::SQLITE_UTF8;
         if deterministic {
             flags |= ffi::SQLITE_DETERMINISTIC;
@@ -441,7 +441,7 @@ impl InnerConnection {
         }
 
         let boxed_aggr: *mut D = Box::into_raw(Box::new(aggr));
-        let c_name = try!(str_to_cstring(fn_name));
+        let c_name = str_to_cstring(fn_name)?;
         let mut flags = ffi::SQLITE_UTF8;
         if deterministic {
             flags |= ffi::SQLITE_DETERMINISTIC;
@@ -463,7 +463,7 @@ impl InnerConnection {
     }
 
     fn remove_function(&mut self, fn_name: &str, n_arg: c_int) -> Result<()> {
-        let c_name = try!(str_to_cstring(fn_name));
+        let c_name = str_to_cstring(fn_name)?;
         let r = unsafe {
             ffi::sqlite3_create_function_v2(
                 self.db(),
@@ -490,12 +490,12 @@ mod test {
     use std::f64::EPSILON;
     use std::os::raw::c_double;
 
-    use functions::{Aggregate, Context};
+    use crate::functions::{Aggregate, Context};
-    use {Connection, Error, Result, NO_PARAMS};
+    use crate::{Connection, Error, Result, NO_PARAMS};
 
     fn half(ctx: &Context) -> Result<c_double> {
         assert!(ctx.len() == 1, "called with unexpected number of arguments");
-        let value = try!(ctx.get::<c_double>(0));
+        let value = ctx.get::<c_double>(0)?;
         Ok(value / 2f64)
     }
 
@@ -529,7 +529,7 @@ mod test {
         let saved_re: Option<&Regex> = unsafe { ctx.get_aux(0) };
         let new_re = match saved_re {
             None => {
-                let s = try!(ctx.get::<String>(0));
+                let s = ctx.get::<String>(0)?;
                 match Regex::new(&s) {
                     Ok(r) => Some(r),
                     Err(err) => return Err(Error::UserFunctionError(Box::new(err))),
@@ -607,7 +607,7 @@ mod test {
         db.create_scalar_function("regexp", 2, true, move |ctx| {
             assert!(ctx.len() == 2, "called with unexpected number of arguments");
 
-            let regex_s = try!(ctx.get::<String>(0));
+            let regex_s = ctx.get::<String>(0)?;
             let entry = cached_regexes.entry(regex_s.clone());
             let regex = {
                 use std::collections::hash_map::Entry::{Occupied, Vacant};
@@ -620,7 +620,7 @@ mod test {
                 }
             };
 
-            let text = try!(ctx.get::<String>(1));
+            let text = ctx.get::<String>(1)?;
             Ok(regex.is_match(&text))
         })
         .unwrap();
@@ -648,7 +648,7 @@ mod test {
             let mut ret = String::new();
 
             for idx in 0..ctx.len() {
-                let s = try!(ctx.get::<String>(idx));
+                let s = ctx.get::<String>(idx)?;
                 ret.push_str(&s);
             }
 
@@ -675,7 +675,7 @@ mod test {
         }
 
         fn step(&self, ctx: &mut Context, sum: &mut i64) -> Result<()> {
-            *sum += try!(ctx.get::<i64>(0));
+            *sum += ctx.get::<i64>(0)?;
             Ok(())
         }
 

src/hooks.rs

@@ -4,9 +4,9 @@
 use std::os::raw::{c_char, c_int, c_void};
 use std::ptr;
 
-use ffi;
+use crate::ffi;
 
-use {Connection, InnerConnection};
+use crate::{Connection, InnerConnection};
 
 /// Authorizer Action Codes
 #[derive(Debug, PartialEq)]
@@ -290,7 +290,7 @@ fn free_boxed_hook<F>(p: *mut c_void) {
 mod test {
     use super::Action;
     use std::sync::atomic::{AtomicBool, Ordering};
-    use Connection;
+    use crate::Connection;
 
     #[test]
     fn test_commit_hook() {

src/lib.rs

@@ -88,32 +88,32 @@ use std::str;
 use std::sync::atomic::{AtomicBool, Ordering, ATOMIC_BOOL_INIT};
 use std::sync::{Arc, Mutex, Once, ONCE_INIT};
 
-use cache::StatementCache;
+use crate::cache::StatementCache;
-use error::{error_from_handle, error_from_sqlite_code};
+use crate::error::{error_from_handle, error_from_sqlite_code};
-use raw_statement::RawStatement;
+use crate::raw_statement::RawStatement;
-use types::{ToSql, ValueRef};
+use crate::types::{ToSql, ValueRef};
 
-pub use statement::Statement;
+pub use crate::statement::Statement;
 
-pub use row::{AndThenRows, MappedRows, Row, RowIndex, Rows};
+pub use crate::row::{AndThenRows, MappedRows, Row, RowIndex, Rows};
 
-pub use transaction::{DropBehavior, Savepoint, Transaction, TransactionBehavior};
+pub use crate::transaction::{DropBehavior, Savepoint, Transaction, TransactionBehavior};
 #[allow(deprecated)]
-pub use transaction::{SqliteTransaction, SqliteTransactionBehavior};
+pub use crate::transaction::{SqliteTransaction, SqliteTransactionBehavior};
 
-pub use error::Error;
+pub use crate::error::Error;
 #[allow(deprecated)]
-pub use error::SqliteError;
+pub use crate::error::SqliteError;
-pub use ffi::ErrorCode;
+pub use crate::ffi::ErrorCode;
 
-pub use cache::CachedStatement;
+pub use crate::cache::CachedStatement;
-pub use version::*;
+pub use crate::version::*;
 
 #[cfg(feature = "hooks")]
-pub use hooks::*;
+pub use crate::hooks::*;
 #[cfg(feature = "load_extension")]
 #[allow(deprecated)]
-pub use load_extension_guard::{LoadExtensionGuard, SqliteLoadExtensionGuard};
+pub use crate::load_extension_guard::{LoadExtensionGuard, SqliteLoadExtensionGuard};
 
 #[cfg(feature = "backup")]
 pub mod backup;
@@ -162,11 +162,11 @@ unsafe fn errmsg_to_string(errmsg: *const c_char) -> String {
 }
 
 fn str_to_cstring(s: &str) -> Result<CString> {
-    Ok(try!(CString::new(s)))
+    Ok(CString::new(s)?)
 }
 
 fn path_to_cstring(p: &Path) -> Result<CString> {
-    let s = try!(p.to_str().ok_or_else(|| Error::InvalidPath(p.to_owned())));
+    let s = p.to_str().ok_or_else(|| Error::InvalidPath(p.to_owned()))?;
     str_to_cstring(s)
 }
 
@@ -253,7 +253,7 @@ impl Connection {
     /// Will return `Err` if `path` cannot be converted to a C-compatible
     /// string or if the underlying SQLite open call fails.
     pub fn open_with_flags<P: AsRef<Path>>(path: P, flags: OpenFlags) -> Result<Connection> {
-        let c_path = try!(path_to_cstring(path.as_ref()));
+        let c_path = path_to_cstring(path.as_ref())?;
         InnerConnection::open_with_flags(&c_path, flags).map(|db| Connection {
             db: RefCell::new(db),
             cache: StatementCache::with_capacity(STATEMENT_CACHE_DEFAULT_CAPACITY),
@@ -270,7 +270,7 @@ impl Connection {
     ///
     /// Will return `Err` if the underlying SQLite open call fails.
     pub fn open_in_memory_with_flags(flags: OpenFlags) -> Result<Connection> {
-        let c_memory = try!(str_to_cstring(":memory:"));
+        let c_memory = str_to_cstring(":memory:")?;
         InnerConnection::open_with_flags(&c_memory, flags).map(|db| Connection {
             db: RefCell::new(db),
             cache: StatementCache::with_capacity(STATEMENT_CACHE_DEFAULT_CAPACITY),
@@ -398,7 +398,7 @@ impl Connection {
         P::Item: ToSql,
         F: FnOnce(&Row) -> T,
     {
-        let mut stmt = try!(self.prepare(sql));
+        let mut stmt = self.prepare(sql)?;
         stmt.query_row(params, f)
     }
 
@@ -416,8 +416,8 @@ impl Connection {
     where
         F: FnOnce(&Row) -> T,
     {
-        let mut stmt = try!(self.prepare(sql));
+        let mut stmt = self.prepare(sql)?;
-        let mut rows = try!(stmt.query_named(params));
+        let mut rows = stmt.query_named(params)?;
 
         rows.get_expected_row().map(|r| f(&r))
     }
@@ -454,8 +454,8 @@ impl Connection {
         F: FnOnce(&Row) -> result::Result<T, E>,
         E: convert::From<Error>,
     {
-        let mut stmt = try!(self.prepare(sql));
+        let mut stmt = self.prepare(sql)?;
-        let mut rows = try!(stmt.query(params));
+        let mut rows = stmt.query(params)?;
 
         rows.get_expected_row().map_err(E::from).and_then(|r| f(&r))
     }
@@ -467,9 +467,9 @@ impl Connection {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result};
     /// fn insert_new_people(conn: &Connection) -> Result<()> {
-    ///     let mut stmt = try!(conn.prepare("INSERT INTO People (name) VALUES (?)"));
+    ///     let mut stmt = conn.prepare("INSERT INTO People (name) VALUES (?)")?;
-    ///     try!(stmt.execute(&["Joe Smith"]));
+    ///     stmt.execute(&["Joe Smith"])?;
-    ///     try!(stmt.execute(&["Bob Jones"]));
+    ///     stmt.execute(&["Bob Jones"])?;
     ///     Ok(())
     /// }
     /// ```
@@ -506,8 +506,8 @@ impl Connection {
     /// # use rusqlite::{Connection, Result};
     /// # use std::path::{Path};
     /// fn load_my_extension(conn: &Connection) -> Result<()> {
-    ///     try!(conn.load_extension_enable());
+    ///     conn.load_extension_enable()?;
-    ///     try!(conn.load_extension(Path::new("my_sqlite_extension"), None));
+    ///     conn.load_extension(Path::new("my_sqlite_extension"), None)?;
     ///     conn.load_extension_disable()
     /// }
     /// ```
@@ -546,7 +546,7 @@ impl Connection {
     /// # use rusqlite::{Connection, Result, LoadExtensionGuard};
     /// # use std::path::{Path};
     /// fn load_my_extension(conn: &Connection) -> Result<()> {
-    ///     let _guard = try!(LoadExtensionGuard::new(conn));
+    ///     let _guard = LoadExtensionGuard::new(conn)?;
     ///
     ///     conn.load_extension("my_sqlite_extension", None)
     /// }
@@ -817,7 +817,7 @@ impl InnerConnection {
     #[cfg(feature = "hooks")]
     fn new(db: *mut ffi::sqlite3) -> InnerConnection {
         InnerConnection {
-            db: db,
+            db,
             interrupt_lock: Arc::new(Mutex::new(db)),
             free_commit_hook: None,
             free_rollback_hook: None,
@@ -919,7 +919,7 @@ impl InnerConnection {
     }
 
     fn execute_batch(&mut self, sql: &str) -> Result<()> {
-        let c_sql = try!(str_to_cstring(sql));
+        let c_sql = str_to_cstring(sql)?;
         unsafe {
             let r = ffi::sqlite3_exec(
                 self.db(),
@@ -940,11 +940,11 @@ impl InnerConnection {
 
     #[cfg(feature = "load_extension")]
     fn load_extension(&self, dylib_path: &Path, entry_point: Option<&str>) -> Result<()> {
-        let dylib_str = try!(path_to_cstring(dylib_path));
+        let dylib_str = path_to_cstring(dylib_path)?;
         unsafe {
             let mut errmsg: *mut c_char = mem::uninitialized();
             let r = if let Some(entry_point) = entry_point {
-                let c_entry = try!(str_to_cstring(entry_point));
+                let c_entry = str_to_cstring(entry_point)?;
                 ffi::sqlite3_load_extension(
                     self.db,
                     dylib_str.as_ptr(),
@@ -973,7 +973,7 @@ impl InnerConnection {
             return Err(error_from_sqlite_code(ffi::SQLITE_TOOBIG, None));
         }
         let mut c_stmt: *mut ffi::sqlite3_stmt = unsafe { mem::uninitialized() };
-        let c_sql = try!(str_to_cstring(sql));
+        let c_sql = str_to_cstring(sql)?;
         let len_with_nul = (sql.len() + 1) as c_int;
         let r = unsafe {
             if cfg!(feature = "unlock_notify") {
@@ -1087,7 +1087,7 @@ mod test {
     extern crate tempdir;
     use self::tempdir::TempDir;
     pub use super::*;
-    use ffi;
+    use crate::ffi;
     pub use std::error::Error as StdError;
     pub use std::fmt;
 
@@ -1578,7 +1578,7 @@ mod test {
             let i_to_insert = i as i64;
             assert_eq!(
                 insert_stmt
-                    .execute(&[&i_to_insert as &dyn ToSql, &v])
+                    .execute(&[&i_to_insert as &ToSql, &v])
                     .unwrap(),
                 1
             );

src/limits.rs

@@ -2,10 +2,10 @@
 
 use std::os::raw::c_int;
 
-use ffi;
+use crate::ffi;
-pub use ffi::Limit;
+pub use crate::ffi::Limit;
 
-use Connection;
+use crate::Connection;
 
 impl Connection {
     /// Returns the current value of a limit.
@@ -23,8 +23,8 @@ impl Connection {
 
 #[cfg(test)]
 mod test {
-    use ffi::Limit;
+    use crate::ffi::Limit;
-    use Connection;
+    use crate::Connection;
 
     #[test]
     fn test_limit() {
@@ -57,13 +57,13 @@ mod test {
         assert_eq!(99, db.limit(Limit::SQLITE_LIMIT_VARIABLE_NUMBER));
 
         // SQLITE_LIMIT_TRIGGER_DEPTH was added in SQLite 3.6.18.
-        if ::version_number() >= 3006018 {
+        if crate::version_number() >= 3006018 {
             db.set_limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH, 32);
             assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH));
         }
 
         // SQLITE_LIMIT_WORKER_THREADS was added in SQLite 3.8.7.
-        if ::version_number() >= 3008007 {
+        if crate::version_number() >= 3008007 {
             db.set_limit(Limit::SQLITE_LIMIT_WORKER_THREADS, 2);
             assert_eq!(2, db.limit(Limit::SQLITE_LIMIT_WORKER_THREADS));
         }

src/load_extension_guard.rs

@@ -1,4 +1,4 @@
-use {Connection, Result};
+use crate::{Connection, Result};
 
 /// Old name for `LoadExtensionGuard`. `SqliteLoadExtensionGuard` is deprecated.
 #[deprecated(since = "0.6.0", note = "Use LoadExtensionGuard instead")]
@@ -12,7 +12,7 @@ pub type SqliteLoadExtensionGuard<'conn> = LoadExtensionGuard<'conn>;
 /// # use rusqlite::{Connection, Result, LoadExtensionGuard};
 /// # use std::path::{Path};
 /// fn load_my_extension(conn: &Connection) -> Result<()> {
-///     let _guard = try!(LoadExtensionGuard::new(conn));
+///     let _guard = LoadExtensionGuard::new(conn)?;
 ///
 ///     conn.load_extension(Path::new("my_sqlite_extension"), None)
 /// }

src/row.rs

@@ -2,7 +2,7 @@ use std::marker::PhantomData;
 use std::{convert, result};
 
 use super::{Error, Result, Statement};
-use types::{FromSql, FromSqlError, ValueRef};
+use crate::types::{FromSql, FromSqlError, ValueRef};
 
 /// An handle for the resulting rows of a query.
 pub struct Rows<'stmt> {
@@ -165,7 +165,7 @@ impl<'a, 'stmt> Row<'a, 'stmt> {
     /// enabled), and the underlying SQLite column is a blob whose size is not
     /// 16 bytes, `Error::InvalidColumnType` will also be returned.
     pub fn get_checked<I: RowIndex, T: FromSql>(&self, idx: I) -> Result<T> {
-        let idx = try!(idx.idx(self.stmt));
+        let idx = idx.idx(self.stmt)?;
         let value = self.stmt.value_ref(idx);
         FromSql::column_result(value).map_err(|err| match err {
             FromSqlError::InvalidType => Error::InvalidColumnType(idx, value.data_type()),

src/statement.rs

@@ -11,9 +11,9 @@ use super::str_to_cstring;
 use super::{
     AndThenRows, Connection, Error, MappedRows, RawStatement, Result, Row, Rows, ValueRef,
 };
-use types::{ToSql, ToSqlOutput};
+use crate::types::{ToSql, ToSqlOutput};
 #[cfg(feature = "array")]
-use vtab::array::{free_array, ARRAY_TYPE};
+use crate::vtab::array::{free_array, ARRAY_TYPE};
 
 /// A prepared statement.
 pub struct Statement<'conn> {
@@ -70,10 +70,10 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result};
     /// fn update_rows(conn: &Connection) -> Result<()> {
-    ///     let mut stmt = try!(conn.prepare("UPDATE foo SET bar = 'baz' WHERE qux = ?"));
+    ///     let mut stmt = conn.prepare("UPDATE foo SET bar = 'baz' WHERE qux = ?")?;
     ///
-    ///     try!(stmt.execute(&[1i32]));
+    ///     stmt.execute(&[1i32])?;
-    ///     try!(stmt.execute(&[2i32]));
+    ///     stmt.execute(&[2i32])?;
     ///
     ///     Ok(())
     /// }
@@ -89,7 +89,7 @@ impl<'conn> Statement<'conn> {
         P: IntoIterator,
         P::Item: ToSql,
     {
-        try!(self.bind_parameters(params));
+        self.bind_parameters(params)?;
         self.execute_with_bound_parameters()
     }
 
@@ -107,7 +107,7 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result};
     /// fn insert(conn: &Connection) -> Result<usize> {
-    ///     let mut stmt = try!(conn.prepare("INSERT INTO test (name) VALUES (:name)"));
+    ///     let mut stmt = conn.prepare("INSERT INTO test (name) VALUES (:name)")?;
     ///     stmt.execute_named(&[(":name", &"one")])
     /// }
     /// ```
@@ -118,7 +118,7 @@ impl<'conn> Statement<'conn> {
     /// returns rows (in which case `query` should be used instead), or the
     /// underling SQLite call fails.
     pub fn execute_named(&mut self, params: &[(&str, &ToSql)]) -> Result<usize> {
-        try!(self.bind_parameters_named(params));
+        self.bind_parameters_named(params)?;
         self.execute_with_bound_parameters()
     }
 
@@ -140,7 +140,7 @@ impl<'conn> Statement<'conn> {
         P: IntoIterator,
         P::Item: ToSql,
     {
-        let changes = try!(self.execute(params));
+        let changes = self.execute(params)?;
         match changes {
             1 => Ok(self.conn.last_insert_rowid()),
             _ => Err(Error::StatementChangedRows(changes)),
@@ -159,12 +159,12 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result, NO_PARAMS};
     /// fn get_names(conn: &Connection) -> Result<Vec<String>> {
-    ///     let mut stmt = try!(conn.prepare("SELECT name FROM people"));
+    ///     let mut stmt = conn.prepare("SELECT name FROM people")?;
-    ///     let mut rows = try!(stmt.query(NO_PARAMS));
+    ///     let mut rows = stmt.query(NO_PARAMS)?;
     ///
     ///     let mut names = Vec::new();
     ///     while let Some(result_row) = rows.next() {
-    ///         let row = try!(result_row);
+    ///         let row = result_row?;
     ///         names.push(row.get(0));
     ///     }
     ///
@@ -180,8 +180,8 @@ impl<'conn> Statement<'conn> {
         P: IntoIterator,
         P::Item: ToSql,
     {
-        try!(self.check_readonly());
+        self.check_readonly()?;
-        try!(self.bind_parameters(params));
+        self.bind_parameters(params)?;
         Ok(Rows::new(self))
     }
 
@@ -196,8 +196,8 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result};
     /// fn query(conn: &Connection) -> Result<()> {
-    ///     let mut stmt = try!(conn.prepare("SELECT * FROM test where name = :name"));
+    ///     let mut stmt = conn.prepare("SELECT * FROM test where name = :name")?;
-    ///     let mut rows = try!(stmt.query_named(&[(":name", &"one")]));
+    ///     let mut rows = stmt.query_named(&[(":name", &"one")])?;
     ///     while let Some(row) = rows.next() {
     ///         // ...
     ///     }
@@ -209,8 +209,8 @@ impl<'conn> Statement<'conn> {
     ///
     /// Will return `Err` if binding parameters fails.
     pub fn query_named<'a>(&'a mut self, params: &[(&str, &ToSql)]) -> Result<Rows<'a>> {
-        try!(self.check_readonly());
+        self.check_readonly()?;
-        try!(self.bind_parameters_named(params));
+        self.bind_parameters_named(params)?;
         Ok(Rows::new(self))
     }
 
@@ -222,12 +222,12 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result, NO_PARAMS};
     /// fn get_names(conn: &Connection) -> Result<Vec<String>> {
-    ///     let mut stmt = try!(conn.prepare("SELECT name FROM people"));
+    ///     let mut stmt = conn.prepare("SELECT name FROM people")?;
-    ///     let rows = try!(stmt.query_map(NO_PARAMS, |row| row.get(0)));
+    ///     let rows = stmt.query_map(NO_PARAMS, |row| row.get(0))?;
     ///
     ///     let mut names = Vec::new();
     ///     for name_result in rows {
-    ///         names.push(try!(name_result));
+    ///         names.push(name_result?);
     ///     }
     ///
     ///     Ok(names)
@@ -259,12 +259,12 @@ impl<'conn> Statement<'conn> {
     /// ```rust,no_run
     /// # use rusqlite::{Connection, Result};
     /// fn get_names(conn: &Connection) -> Result<Vec<String>> {
-    ///     let mut stmt = try!(conn.prepare("SELECT name FROM people WHERE id = :id"));
+    ///     let mut stmt = conn.prepare("SELECT name FROM people WHERE id = :id")?;
-    ///     let rows = try!(stmt.query_map_named(&[(":id", &"one")], |row| row.get(0)));
+    ///     let rows = stmt.query_map_named(&[(":id", &"one")], |row| row.get(0))?;
     ///
     ///     let mut names = Vec::new();
     ///     for name_result in rows {
-    ///         names.push(try!(name_result));
+    ///         names.push(name_result?);
     ///     }
     ///
     ///     Ok(names)
@@ -330,13 +330,13 @@ impl<'conn> Statement<'conn> {
     /// }
     ///
     /// fn get_names(conn: &Connection) -> Result<Vec<Person>> {
-    ///     let mut stmt = try!(conn.prepare("SELECT name FROM people WHERE id = :id"));
+    ///     let mut stmt = conn.prepare("SELECT name FROM people WHERE id = :id")?;
     ///     let rows =
-    ///         try!(stmt.query_and_then_named(&[(":id", &"one")], |row| name_to_person(row.get(0))));
+    ///         stmt.query_and_then_named(&[(":id", &"one")], |row| name_to_person(row.get(0)))?;
     ///
     ///     let mut persons = Vec::new();
     ///     for person_result in rows {
-    ///         persons.push(try!(person_result));
+    ///         persons.push(person_result?);
     ///     }
     ///
     ///     Ok(persons)
@@ -366,7 +366,7 @@ impl<'conn> Statement<'conn> {
         P: IntoIterator,
         P::Item: ToSql,
     {
-        let mut rows = try!(self.query(params));
+        let mut rows = self.query(params)?;
         let exists = {
             match rows.next() {
                 Some(_) => true,
@@ -391,7 +391,7 @@ impl<'conn> Statement<'conn> {
         P::Item: ToSql,
         F: FnOnce(&Row) -> T,
     {
-        let mut rows = try!(self.query(params));
+        let mut rows = self.query(params)?;
 
         rows.get_expected_row().map(|r| f(&r))
     }
@@ -415,7 +415,7 @@ impl<'conn> Statement<'conn> {
     /// Will return Err if `name` is invalid. Will return Ok(None) if the name
     /// is valid but not a bound parameter of this statement.
     pub fn parameter_index(&self, name: &str) -> Result<Option<usize>> {
-        let c_name = try!(str_to_cstring(name));
+        let c_name = str_to_cstring(name)?;
         Ok(self.stmt.bind_parameter_index(&c_name))
     }
 
@@ -431,7 +431,7 @@ impl<'conn> Statement<'conn> {
             if index > expected {
                 break;
             }
-            try!(self.bind_parameter(&p, index));
+            self.bind_parameter(&p, index)?;
         }
         assert_eq!(
             index, expected,
@@ -444,8 +444,8 @@ impl<'conn> Statement<'conn> {
 
     fn bind_parameters_named(&mut self, params: &[(&str, &ToSql)]) -> Result<()> {
         for &(name, value) in params {
-            if let Some(i) = try!(self.parameter_index(name)) {
+            if let Some(i) = self.parameter_index(name)? {
-                try!(self.bind_parameter(value, i));
+                self.bind_parameter(value, i)?;
             } else {
                 return Err(Error::InvalidParameterName(name.into()));
             }
@@ -454,7 +454,7 @@ impl<'conn> Statement<'conn> {
     }
 
     fn bind_parameter(&self, param: &ToSql, col: usize) -> Result<()> {
-        let value = try!(param.to_sql());
+        let value = param.to_sql()?;
 
         let ptr = unsafe { self.stmt.ptr() };
         let value = match value {
@@ -489,7 +489,7 @@ impl<'conn> Statement<'conn> {
                 if length > ::std::i32::MAX as usize {
                     ffi::SQLITE_TOOBIG
                 } else {
-                    let c_str = try!(str_to_cstring(s));
+                    let c_str = str_to_cstring(s)?;
                     let destructor = if length > 0 {
                         ffi::SQLITE_TRANSIENT()
                     } else {
@@ -673,7 +673,7 @@ impl<'conn> Statement<'conn> {
 
 #[cfg(test)]
 mod test {
-    use {Connection, Error, Result, NO_PARAMS};
+    use crate::{Connection, Error, Result, NO_PARAMS};
 
     #[test]
     fn test_execute_named() {

src/trace.rs

@@ -7,8 +7,8 @@ use std::ptr;
 use std::time::Duration;
 
 use super::ffi;
-use error::error_from_sqlite_code;
+use crate::error::error_from_sqlite_code;
-use {Connection, Result};
+use crate::{Connection, Result};
 
 /// Set up the process-wide SQLite error logging callback.
 /// This function is marked unsafe for two reasons:
@@ -124,7 +124,7 @@ mod test {
     use std::sync::Mutex;
     use std::time::Duration;
 
-    use Connection;
+    use crate::Connection;
 
     #[test]
     fn test_trace() {

src/transaction.rs

@@ -1,5 +1,5 @@
 use std::ops::Deref;
-use {Connection, Result};
+use crate::{Connection, Result};
 
 /// Old name for `TransactionBehavior`. `SqliteTransactionBehavior` is
 /// deprecated.
@@ -51,10 +51,10 @@ pub type SqliteTransaction<'conn> = Transaction<'conn>;
 /// # fn do_queries_part_1(_conn: &Connection) -> Result<()> { Ok(()) }
 /// # fn do_queries_part_2(_conn: &Connection) -> Result<()> { Ok(()) }
 /// fn perform_queries(conn: &mut Connection) -> Result<()> {
-///     let tx = try!(conn.transaction());
+///     let tx = conn.transaction()?;
 ///
-///     try!(do_queries_part_1(&tx)); // tx causes rollback if this fails
+///     do_queries_part_1(&tx)?; // tx causes rollback if this fails
-///     try!(do_queries_part_2(&tx)); // tx causes rollback if this fails
+///     do_queries_part_2(&tx)?; // tx causes rollback if this fails
 ///
 ///     tx.commit()
 /// }
@@ -79,10 +79,10 @@ pub struct Transaction<'conn> {
 /// # fn do_queries_part_1(_conn: &Connection) -> Result<()> { Ok(()) }
 /// # fn do_queries_part_2(_conn: &Connection) -> Result<()> { Ok(()) }
 /// fn perform_queries(conn: &mut Connection) -> Result<()> {
-///     let sp = try!(conn.savepoint());
+///     let sp = conn.savepoint()?;
 ///
-///     try!(do_queries_part_1(&sp)); // sp causes rollback if this fails
+///     do_queries_part_1(&sp)?; // sp causes rollback if this fails
-///     try!(do_queries_part_2(&sp)); // sp causes rollback if this fails
+///     do_queries_part_2(&sp)?; // sp causes rollback if this fails
 ///
 ///     sp.commit()
 /// }
@@ -127,12 +127,12 @@ impl<'conn> Transaction<'conn> {
     /// # use rusqlite::{Connection, Result};
     /// # fn perform_queries_part_1_succeeds(_conn: &Connection) -> bool { true }
     /// fn perform_queries(conn: &mut Connection) -> Result<()> {
-    ///     let mut tx = try!(conn.transaction());
+    ///     let mut tx = conn.transaction()?;
     ///
     ///     {
-    ///         let sp = try!(tx.savepoint());
+    ///         let sp = tx.savepoint()?;
     ///         if perform_queries_part_1_succeeds(&sp) {
-    ///             try!(sp.commit());
+    ///             sp.commit()?;
     ///         }
     ///         // otherwise, sp will rollback
     ///     }
@@ -345,10 +345,10 @@ impl Connection {
     /// # fn do_queries_part_1(_conn: &Connection) -> Result<()> { Ok(()) }
     /// # fn do_queries_part_2(_conn: &Connection) -> Result<()> { Ok(()) }
     /// fn perform_queries(conn: &mut Connection) -> Result<()> {
-    ///     let tx = try!(conn.transaction());
+    ///     let tx = conn.transaction()?;
     ///
-    ///     try!(do_queries_part_1(&tx)); // tx causes rollback if this fails
+    ///     do_queries_part_1(&tx)?; // tx causes rollback if this fails
-    ///     try!(do_queries_part_2(&tx)); // tx causes rollback if this fails
+    ///     do_queries_part_2(&tx)?; // tx causes rollback if this fails
     ///
     ///     tx.commit()
     /// }
@@ -388,10 +388,10 @@ impl Connection {
     /// # fn do_queries_part_1(_conn: &Connection) -> Result<()> { Ok(()) }
     /// # fn do_queries_part_2(_conn: &Connection) -> Result<()> { Ok(()) }
     /// fn perform_queries(conn: &mut Connection) -> Result<()> {
-    ///     let sp = try!(conn.savepoint());
+    ///     let sp = conn.savepoint()?;
     ///
-    ///     try!(do_queries_part_1(&sp)); // sp causes rollback if this fails
+    ///     do_queries_part_1(&sp)?; // sp causes rollback if this fails
-    ///     try!(do_queries_part_2(&sp)); // sp causes rollback if this fails
+    ///     do_queries_part_2(&sp)?; // sp causes rollback if this fails
     ///
     ///     sp.commit()
     /// }
@@ -419,7 +419,7 @@ impl Connection {
 #[cfg(test)]
 mod test {
     use super::DropBehavior;
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();

src/types/chrono.rs

@@ -5,8 +5,8 @@ use std::borrow::Cow;
 
 use self::chrono::{DateTime, Local, NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc};
 
-use types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
+use crate::types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
-use Result;
+use crate::Result;
 
 /// ISO 8601 calendar date without timezone => "YYYY-MM-DD"
 impl ToSql for NaiveDate {
@@ -95,7 +95,7 @@ impl FromSql for DateTime<Utc> {
     fn column_result(value: ValueRef) -> FromSqlResult<Self> {
         {
             // Try to parse value as rfc3339 first.
-            let s = try!(value.as_str());
+            let s = value.as_str()?;
 
             // If timestamp looks space-separated, make a copy and replace it with 'T'.
             let s = if s.len() >= 11 && s.as_bytes()[10] == b' ' {
@@ -122,7 +122,7 @@ impl FromSql for DateTime<Utc> {
 /// RFC3339 ("YYYY-MM-DDTHH:MM:SS.SSS[+-]HH:MM") into `DateTime<Local>`.
 impl FromSql for DateTime<Local> {
     fn column_result(value: ValueRef) -> FromSqlResult<Self> {
-        let utc_dt = try!(DateTime::<Utc>::column_result(value));
+        let utc_dt = DateTime::<Utc>::column_result(value)?;
         Ok(utc_dt.with_timezone(&Local))
     }
 }
@@ -132,7 +132,7 @@ mod test {
     use super::chrono::{
         DateTime, Duration, Local, NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc,
     };
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();

src/types/from_sql.rs

@@ -181,7 +181,7 @@ impl FromSql for Value {
 #[cfg(test)]
 mod test {
     use super::FromSql;
-    use {Connection, Error};
+    use crate::{Connection, Error};
 
     fn checked_memory_handle() -> Connection {
         Connection::open_in_memory().unwrap()

src/types/mod.rs

@@ -116,7 +116,7 @@ mod test {
     use super::Value;
     use std::f64::EPSILON;
     use std::os::raw::{c_double, c_int};
-    use {Connection, Error, NO_PARAMS};
+    use crate::{Connection, Error, NO_PARAMS};
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();

src/types/serde_json.rs

@@ -3,8 +3,8 @@ extern crate serde_json;
 
 use self::serde_json::Value;
 
-use types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
+use crate::types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
-use Result;
+use crate::Result;
 
 /// Serialize JSON `Value` to text.
 impl ToSql for Value {
@@ -28,8 +28,8 @@ impl FromSql for Value {
 #[cfg(test)]
 mod test {
     use super::serde_json;
-    use types::ToSql;
+    use crate::types::ToSql;
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();

src/types/time.rs

@@ -1,7 +1,7 @@
 extern crate time;
 
-use types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
+use crate::types::{FromSql, FromSqlError, FromSqlResult, ToSql, ToSqlOutput, ValueRef};
-use Result;
+use crate::Result;
 
 const SQLITE_DATETIME_FMT: &str = "%Y-%m-%dT%H:%M:%S.%fZ";
 const SQLITE_DATETIME_FMT_LEGACY: &str = "%Y-%m-%d %H:%M:%S:%f %Z";
@@ -33,7 +33,7 @@ impl FromSql for time::Timespec {
 #[cfg(test)]
 mod test {
     use super::time;
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     fn checked_memory_handle() -> Connection {
         let db = Connection::open_in_memory().unwrap();

src/types/to_sql.rs

@@ -1,8 +1,8 @@
 use super::{Null, Value, ValueRef};
 use std::borrow::Cow;
 #[cfg(feature = "array")]
-use vtab::array::Array;
+use crate::vtab::array::Array;
-use Result;
+use crate::Result;
 
 /// `ToSqlOutput` represents the possible output types for implementors of the
 /// `ToSql` trait.
@@ -208,7 +208,7 @@ mod test {
     #[test]
     fn test_i128() {
         use std::i128;
-        use {Connection, NO_PARAMS};
+        use crate::{Connection, NO_PARAMS};
         let db = Connection::open_in_memory().unwrap();
         db.execute_batch("CREATE TABLE foo (i128 BLOB, desc TEXT)")
             .unwrap();

src/types/value_ref.rs

@@ -1,5 +1,5 @@
 use super::{Type, Value};
-use types::{FromSqlError, FromSqlResult};
+use crate::types::{FromSqlError, FromSqlResult};
 
 /// A non-owning [dynamic type value](http://sqlite.org/datatype3.html). Typically the
 /// memory backing this value is owned by SQLite.

src/unlock_notify.rs

@@ -6,7 +6,7 @@ use std::os::raw::c_void;
 #[cfg(feature = "unlock_notify")]
 use std::sync::{Condvar, Mutex};
 
-use ffi;
+use crate::ffi;
 
 #[cfg(feature = "unlock_notify")]
 struct UnlockNotification {
@@ -102,7 +102,7 @@ mod test {
     use std::sync::mpsc::sync_channel;
     use std::thread;
     use std::time;
-    use {Connection, OpenFlags, Result, Transaction, TransactionBehavior, NO_PARAMS};
+    use crate::{Connection, OpenFlags, Result, Transaction, TransactionBehavior, NO_PARAMS};
 
     #[test]
     fn test_unlock_notify() {

src/version.rs

@@ -1,4 +1,4 @@
-use ffi;
+use crate::ffi;
 use std::ffi::CStr;
 
 /// Returns the SQLite version as an integer; e.g., `3016002` for version

src/vtab/array.rs

@@ -5,13 +5,13 @@ use std::default::Default;
 use std::os::raw::{c_char, c_int, c_void};
 use std::rc::Rc;
 
-use ffi;
+use crate::ffi;
-use types::{ToSql, ToSqlOutput, Value};
+use crate::types::{ToSql, ToSqlOutput, Value};
-use vtab::{
+use crate::vtab::{
     eponymous_only_module, Context, IndexConstraintOp, IndexInfo, Module, VTab, VTabConnection,
     VTabCursor, Values,
 };
-use {Connection, Result};
+use crate::{Connection, Result};
 
 // http://sqlite.org/bindptr.html
 
@@ -131,7 +131,7 @@ impl ArrayTabCursor {
 impl VTabCursor for ArrayTabCursor {
     fn filter(&mut self, idx_num: c_int, _idx_str: Option<&str>, args: &Values) -> Result<()> {
         if idx_num > 0 {
-            self.ptr = try!(args.get_array(0));
+            self.ptr = args.get_array(0)?;
         } else {
             self.ptr = None;
         }
@@ -170,9 +170,9 @@ impl VTabCursor for ArrayTabCursor {
 #[cfg(test)]
 mod test {
     use std::rc::Rc;
-    use types::Value;
+    use crate::types::Value;
-    use vtab::array;
+    use crate::vtab::array;
-    use Connection;
+    use crate::Connection;
 
     #[test]
     fn test_array_module() {

src/vtab/csvtab.rs

@@ -8,13 +8,13 @@ use std::path::Path;
 use std::result;
 use std::str;
 
-use ffi;
+use crate::ffi;
-use types::Null;
+use crate::types::Null;
-use vtab::{
+use crate::vtab::{
     dequote, escape_double_quote, parse_boolean, read_only_module, Context, CreateVTab, IndexInfo,
     Module, VTab, VTabConnection, VTabCursor, Values,
 };
-use {Connection, Error, Result};
+use crate::{Connection, Error, Result};
 
 /// Register the "csv" module.
 /// ```sql
@@ -60,7 +60,7 @@ impl CSVTab {
     }
 
     fn parameter(c_slice: &[u8]) -> Result<(&str, &str)> {
-        let arg = try!(str::from_utf8(c_slice)).trim();
+        let arg = str::from_utf8(c_slice)?.trim();
         let mut split = arg.split('=');
         if let Some(key) = split.next() {
             if let Some(value) = split.next() {
@@ -107,7 +107,7 @@ impl VTab for CSVTab {
 
         let args = &args[3..];
         for c_slice in args {
-            let (param, value) = try!(CSVTab::parameter(c_slice));
+            let (param, value) = CSVTab::parameter(c_slice)?;
             match param {
                 "filename" => {
                     if !Path::new(value).exists() {
@@ -189,10 +189,10 @@ impl VTab for CSVTab {
 
         let mut cols: Vec<String> = Vec::new();
         if vtab.has_headers || (n_col.is_none() && schema.is_none()) {
-            let mut reader = try!(vtab.reader());
+            let mut reader = vtab.reader()?;
             if vtab.has_headers {
                 {
-                    let headers = try!(reader.headers());
+                    let headers = reader.headers()?;
                     // headers ignored if cols is not empty
                     if n_col.is_none() && schema.is_none() {
                         cols = headers
@@ -204,7 +204,7 @@ impl VTab for CSVTab {
                 vtab.offset_first_row = reader.position().clone();
             } else {
                 let mut record = csv::ByteRecord::new();
-                if try!(reader.read_byte_record(&mut record)) {
+                if reader.read_byte_record(&mut record)? {
                     for (i, _) in record.iter().enumerate() {
                         cols.push(format!("c{}", i));
                     }
@@ -245,7 +245,7 @@ impl VTab for CSVTab {
     }
 
     fn open(&self) -> Result<CSVTabCursor> {
-        Ok(CSVTabCursor::new(try!(self.reader())))
+        Ok(CSVTabCursor::new(self.reader()?))
     }
 }
 
@@ -288,7 +288,7 @@ impl VTabCursor for CSVTabCursor {
     fn filter(&mut self, _idx_num: c_int, _idx_str: Option<&str>, _args: &Values) -> Result<()> {
         {
             let offset_first_row = self.vtab().offset_first_row.clone();
-            try!(self.reader.seek(offset_first_row));
+            self.reader.seek(offset_first_row)?;
         }
         self.row_number = 0;
         self.next()
@@ -301,7 +301,7 @@ impl VTabCursor for CSVTabCursor {
                 return Ok(());
             }
 
-            self.eof = !try!(self.reader.read_record(&mut self.cols));
+            self.eof = !self.reader.read_record(&mut self.cols)?;
         }
 
         self.row_number += 1;
@@ -340,8 +340,8 @@ impl From<csv::Error> for Error {
 
 #[cfg(test)]
 mod test {
-    use vtab::csvtab;
+    use crate::vtab::csvtab;
-    use {Connection, Result, NO_PARAMS};
+    use crate::{Connection, Result, NO_PARAMS};
 
     #[test]
     fn test_csv_module() {

src/vtab/mod.rs

@@ -17,12 +17,12 @@ use std::os::raw::{c_char, c_int, c_void};
 use std::ptr;
 use std::slice;
 
-use context::set_result;
+use crate::context::set_result;
-use error::error_from_sqlite_code;
+use crate::error::error_from_sqlite_code;
-use ffi;
+use crate::ffi;
-pub use ffi::{sqlite3_vtab, sqlite3_vtab_cursor};
+pub use crate::ffi::{sqlite3_vtab, sqlite3_vtab_cursor};
-use types::{FromSql, FromSqlError, ToSql, ValueRef};
+use crate::types::{FromSql, FromSqlError, ToSql, ValueRef};
-use {str_to_cstring, Connection, Error, InnerConnection, Result};
+use crate::{str_to_cstring, Connection, Error, InnerConnection, Result};
 
 // let conn: Connection = ...;
 // let mod: Module = ...; // VTab builder
@@ -474,7 +474,7 @@ impl<'a> Values<'a> {
     // So it seems not possible to enhance `ValueRef::from_value`.
     #[cfg(feature = "array")]
     pub(crate) fn get_array(&self, idx: usize) -> Result<Option<array::Array>> {
-        use types::Value;
+        use crate::types::Value;
         let arg = self.args[idx];
         let ptr = unsafe { ffi::sqlite3_value_pointer(arg, array::ARRAY_TYPE) };
         if ptr.is_null() {
@@ -544,7 +544,7 @@ impl InnerConnection {
         module: &Module<T>,
         aux: Option<T::Aux>,
     ) -> Result<()> {
-        let c_name = try!(str_to_cstring(module_name));
+        let c_name = str_to_cstring(module_name)?;
         let r = match aux {
             Some(aux) => {
                 let boxed_aux: *mut T::Aux = Box::into_raw(Box::new(aux));

src/vtab/series.rs

@@ -4,13 +4,13 @@
 use std::default::Default;
 use std::os::raw::c_int;
 
-use ffi;
+use crate::ffi;
-use types::Type;
+use crate::types::Type;
-use vtab::{
+use crate::vtab::{
     eponymous_only_module, Context, IndexConstraintOp, IndexInfo, Module, VTab, VTabConnection,
     VTabCursor, Values,
 };
-use {Connection, Result};
+use crate::{Connection, Result};
 
 /// Register the "generate_series" module.
 pub fn load_module(conn: &Connection) -> Result<()> {
@@ -188,19 +188,19 @@ impl VTabCursor for SeriesTabCursor {
         let idx_num = QueryPlanFlags::from_bits_truncate(idx_num);
         let mut i = 0;
         if idx_num.contains(QueryPlanFlags::START) {
-            self.min_value = try!(args.get(i));
+            self.min_value = args.get(i)?;
             i += 1;
         } else {
             self.min_value = 0;
         }
         if idx_num.contains(QueryPlanFlags::STOP) {
-            self.max_value = try!(args.get(i));
+            self.max_value = args.get(i)?;
             i += 1;
         } else {
             self.max_value = 0xffff_ffff;
         }
         if idx_num.contains(QueryPlanFlags::STEP) {
-            self.step = try!(args.get(i));
+            self.step = args.get(i)?;
             if self.step < 1 {
                 self.step = 1;
             }
@@ -263,9 +263,9 @@ impl VTabCursor for SeriesTabCursor {
 
 #[cfg(test)]
 mod test {
-    use ffi;
+    use crate::ffi;
-    use vtab::series;
+    use crate::vtab::series;
-    use {Connection, NO_PARAMS};
+    use crate::{Connection, NO_PARAMS};
 
     #[test]
     fn test_series_module() {