Handle failure writing build-results file

Fixes #866

src/resources/init-scripts/gradle-build-action.build-result-capture-service.plugin.groovy

@@ -51,11 +51,15 @@ abstract class BuildResultsRecorder implements BuildService<BuildResultsRecorder
             return
         }
 
+        try {
             def buildResultsDir = new File(runnerTempDir, ".build-results")
             buildResultsDir.mkdirs()
             def buildResultsFile = new File(buildResultsDir, githubActionStep + getParameters().getInvocationId().get() + ".json")
             if (!buildResultsFile.exists()) {
                 buildResultsFile << groovy.json.JsonOutput.toJson(buildResults)
             }
+        } catch (Exception e) {
+            println "\ngradle-build-action failed to write build-results file. Will continue.\n> ${e.getLocalizedMessage()}"
+        }
     }
 }

src/resources/init-scripts/gradle-build-action.build-result-capture.init.gradle

@@ -122,6 +122,7 @@ class BuildResults {
             return
         }
 
+        try {
             def buildResultsDir = new File(runnerTempDir, ".build-results")
             buildResultsDir.mkdirs()
             def buildResultsFile = new File(buildResultsDir, githubActionStep + invocationId + ".json")
@@ -134,5 +135,9 @@ class BuildResults {
             } else {
                 buildResultsFile << groovy.json.JsonOutput.toJson(buildResults)
             }
+
+        } catch (Exception e) {
+            println "\ngradle-build-action failed to write build-results file. Will continue.\n> ${e.getLocalizedMessage()}"
+        }
     }
 }

test/init-scripts/src/test/groovy/com/gradle/gradlebuildaction/TestBuildResultRecorder.groovy

@@ -148,6 +148,23 @@ class TestBuildResultRecorder extends BaseInitScriptTest {
         testGradleVersion << ALL_VERSIONS
     }
 
+    def "produces no build results file when RUNNER_TEMP dir is not a writable directory with #testGradleVersion"() {
+        assumeTrue testGradleVersion.compatibleWithCurrentJvm
+
+        when:
+        def invalidDir = new File(testProjectDir, 'invalid-runner-temp')
+        invalidDir.createNewFile()
+
+        run(['help'], initScript, testGradleVersion.gradleVersion, [], [RUNNER_TEMP: invalidDir.absolutePath])
+
+        then:
+        def buildResultsDir = new File(testProjectDir, '.build-results')
+        assert !buildResultsDir.exists()
+
+        where:
+        testGradleVersion << ALL_VERSIONS
+    }
+
     def "produces build results file with build scan when GE plugin is applied in settingsEvaluated"() {
         assumeTrue testGradleVersion.compatibleWithCurrentJvm