"Incremental java compilation is an incubating feature." takes too long for every cordova build Process

Question

Every time I build a Cordova project, the build process is stuck for about 8 minutes.
The last line in the log when this happens is : Incremental java compilation is an incubating feature.

Has anybody seen this happen before?

I'm using Visual Studio 2015 and am running on Windows 10 build 14393.10.

my question is why the build proccess takes too long?

Update:

here is the build logs:

1>------ Build started: Project: bazimTest, Configuration: Release Android ------
1>  Your environment has been set up for using Node.js 4.4.7 (x64) and npm.
1>  ------ Ensuring correct global installation of package from source package directory: C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\ApacheCordovaTools\packages\vs-tac
1>  ------ Name from source package.json: vs-tac
1>  ------ Version from source package.json: 1.0.42
1>  ------ Package already installed globally at correct version.
1>  ------ Cordova tools 6.3.0 already installed.
1>  ------ Build Settings:
1>  ------ Build Settings:
1>  ------    platformConfigurationBldDir: C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bld\Android\Release
1>  ------    platformConfigurationBinDir: C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bin\Android\Release
1>  ------    buildCommand: build
1>  ------    platform: Android
1>  ------    cordovaPlatform: android
1>  ------    configuration: Release
1>  ------    cordovaConfiguration: Release
1>  ------    projectName: bazimTest
1>  ------    projectSourceDir: C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest
1>  ------    npmInstallDir: C:\Users\poury\AppData\Roaming\Microsoft\VisualStudio\MDA\vs-npm\2.14.9
1>  ------    buildTarget: AndroidEmulator
1>  ------    language: en-US
1>  ------ Platform android already exists
1>  ------ Copying native files from C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\res\native\android to platforms\android
1>  ------ Done copying native files to platforms\android
1>  ------ Updating plugins
1>  ------ Currently installed plugins: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected]
1>  ------ Currently installed dependent plugins: [email protected],[email protected]
1>  ------ Currently configured plugins:
1>  ------ Preparing platform: android
1>  No scripts found for hook "before_build".
1>  No scripts found for hook "before_prepare".
1>  Checking config.xml for saved platforms that haven't been added to the project
1>  Checking for any plugins added to the project that have not been installed in android platform
1>  No differences found between plugins added to project and installed in android platform. Continuing...
1>  Generating platform-specific config.xml from defaults for android at C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\res\xml\config.xml
1>  Merging project's config.xml into platform-specific android config.xml
1>  Found "merges/android" folder. Copying its contents into the android project.
1>  Merging and updating files from [www, platforms\android\platform_www, merges\android] to platforms\android\assets\www
1>    delete platforms\android\assets\www\VSBuildInfo.xml (no source)
1>  Wrote out android application name "bazimTest" to C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\res\values\strings.xml
1>  android-versionCode not found in config.xml. Generating a code based on version in config.xml (1.0.0): 10000
1>  Wrote out Android package name "io.cordova.myapp972cd0" to C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\src\io\cordova\myapp972cd0\MainActivity.java
1>  Updating icons at platforms\android\res
1>  Updating splash screens at platforms\android\res
1>  Prepared android project successfully
1>  No scripts found for hook "after_prepare".
1>  Checking config.xml for saved plugins that haven't been added to the project
1>  ------ Copied C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bin\Android\Release\VSBuildInfo.xml to platforms\android\assets\www\VSBuildInfo.xml
1>  ------ Building platform: android
1>  Release
1>  ------ Build configuration options: --release
1>  No scripts found for hook "before_compile".
1>  ANDROID_HOME=C:\Android_SDKs
1>  JAVA_HOME=C:\Program Files\Java\jdk1.8.0_92
1>  Reading build config file: C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\build.json
1>MSBUILD : cordova-build warning : Warning: 'keystore' and 'alias' need to be specified to generate a signed archive.
1>MDAVSCLI : warning : 'keystore' and 'alias' need to be specified to generate a signed archive.
1>  Running command: cmd "/s /c ""C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\gradlew.bat" cdvBuildRelease -b "C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\build.gradle" -Dorg.gradle.daemon=true -Pandroid.useDeprecatedNdk=true""
1>  Starting a new Gradle Daemon for this build (subsequent builds will be faster).
1>  Incremental java compilation is an incubating feature.
1>  :preBuild UP-TO-DATE
1>  :preReleaseBuild UP-TO-DATE
1>  :checkReleaseManifest
1>  :CordovaLib:preBuild UP-TO-DATE
1>  :CordovaLib:preReleaseBuild UP-TO-DATE
1>  :CordovaLib:compileReleaseNdk UP-TO-DATE
1>  :CordovaLib:compileLint
1>  :CordovaLib:copyReleaseLint UP-TO-DATE
1>  :CordovaLib:mergeReleaseProguardFiles UP-TO-DATE
1>  :CordovaLib:packageReleaseRenderscript UP-TO-DATE
1>  :CordovaLib:checkReleaseManifest
1>  :CordovaLib:prepareReleaseDependencies
1>  :CordovaLib:compileReleaseRenderscript UP-TO-DATE
1>  :CordovaLib:generateReleaseResValues UP-TO-DATE
1>  :CordovaLib:generateReleaseResources UP-TO-DATE
1>  :CordovaLib:packageReleaseResources UP-TO-DATE
1>  :CordovaLib:compileReleaseAidl UP-TO-DATE
1>  :CordovaLib:generateReleaseBuildConfig UP-TO-DATE
1>  :CordovaLib:mergeReleaseShaders UP-TO-DATE
1>  :CordovaLib:compileReleaseShaders UP-TO-DATE
1>  :CordovaLib:generateReleaseAssets UP-TO-DATE
1>  :CordovaLib:mergeReleaseAssets UP-TO-DATE
1>  :CordovaLib:processReleaseManifest UP-TO-DATE
1>  :CordovaLib:processReleaseResources UP-TO-DATE
1>  :CordovaLib:generateReleaseSources UP-TO-DATE
1>  :CordovaLib:incrementalReleaseJavaCompilationSafeguard UP-TO-DATE
1>  :CordovaLib:compileReleaseJavaWithJavac UP-TO-DATE
1>  :CordovaLib:processReleaseJavaRes UP-TO-DATE
1>  :CordovaLib:transformResourcesWithMergeJavaResForRelease UP-TO-DATE
1>  :CordovaLib:transformClassesAndResourcesWithSyncLibJarsForRelease UP-TO-DATE
1>  :CordovaLib:mergeReleaseJniLibFolders UP-TO-DATE
1>  :CordovaLib:transformNative_libsWithMergeJniLibsForRelease UP-TO-DATE
1>  :CordovaLib:transformNative_libsWithSyncJniLibsForRelease UP-TO-DATE
1>  :CordovaLib:bundleRelease UP-TO-DATE
1>  :prepareAndroidCordovaLibUnspecifiedReleaseLibrary
1>  :preDebugBuild UP-TO-DATE
1>  :CordovaLib:preDebugBuild UP-TO-DATE
1>  :CordovaLib:compileDebugNdk UP-TO-DATE
1>  :CordovaLib:copyDebugLint UP-TO-DATE
1>  :CordovaLib:mergeDebugProguardFiles UP-TO-DATE
1>  :CordovaLib:packageDebugRenderscript UP-TO-DATE
1>  :CordovaLib:checkDebugManifest
1>  :CordovaLib:prepareDebugDependencies
1>  :CordovaLib:compileDebugRenderscript UP-TO-DATE
1>  :CordovaLib:generateDebugResValues UP-TO-DATE
1>  :CordovaLib:generateDebugResources UP-TO-DATE
1>  :CordovaLib:packageDebugResources UP-TO-DATE
1>  :CordovaLib:compileDebugAidl UP-TO-DATE
1>  :CordovaLib:generateDebugBuildConfig UP-TO-DATE
1>  :CordovaLib:mergeDebugShaders UP-TO-DATE
1>  :CordovaLib:compileDebugShaders UP-TO-DATE
1>  :CordovaLib:generateDebugAssets UP-TO-DATE
1>  :CordovaLib:mergeDebugAssets UP-TO-DATE
1>  :CordovaLib:processDebugManifest UP-TO-DATE
1>  :CordovaLib:processDebugResources UP-TO-DATE
1>  :CordovaLib:generateDebugSources UP-TO-DATE
1>  :CordovaLib:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
1>  :CordovaLib:compileDebugJavaWithJavac UP-TO-DATE
1>  :CordovaLib:processDebugJavaRes UP-TO-DATE
1>  :CordovaLib:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
1>  :CordovaLib:transformClassesAndResourcesWithSyncLibJarsForDebug UP-TO-DATE
1>  :CordovaLib:mergeDebugJniLibFolders UP-TO-DATE
1>  :CordovaLib:transformNative_libsWithMergeJniLibsForDebug UP-TO-DATE
1>  :CordovaLib:transformNative_libsWithSyncJniLibsForDebug UP-TO-DATE
1>  :CordovaLib:bundleDebug UP-TO-DATE
1>  :prepareComAndroidSupportSupportV42411Library UP-TO-DATE
1>  :prepareReleaseDependencies
1>  :compileReleaseAidl
1>  :compileReleaseRenderscript
1>  :generateReleaseBuildConfig
1>  :mergeReleaseShaders
1>  :compileReleaseShaders
1>  :generateReleaseAssets
1>  :mergeReleaseAssets
1>  :generateReleaseResValues
1>  :generateReleaseResources
1>  :mergeReleaseResources
1>  :processReleaseManifest
1>  :processReleaseResources
1>  :generateReleaseSources
1>  :incrementalReleaseJavaCompilationSafeguard
1>  :compileReleaseJavaWithJavac
1>  :compileReleaseJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
1>  :compileReleaseNdk UP-TO-DATE
1>  :compileReleaseSources
1>  :lintVitalRelease
1>  :prePackageMarkerForRelease
1>  :transformClassesWithDexForRelease
1>  To run dex in process, the Gradle daemon needs a larger heap.
1>  It currently has approximately 455 MB.
1>  For faster builds, increase the maximum heap size for the Gradle daemon to more than 2048 MB.
1>  To do this set org.gradle.jvmargs=-Xmx2048M in the project gradle.properties.
1>  For more information see https://docs.gradle.org/current/userguide/build_environment.html
1>
1>
1>  :mergeReleaseJniLibFolders
1>  :transformNative_libsWithMergeJniLibsForRelease
1>  :processReleaseJavaRes UP-TO-DATE
1>  :transformResourcesWithMergeJavaResForRelease
1>  :packageRelease
1>  :assembleRelease
1>  :cdvBuildRelease
1>
1>  BUILD SUCCESSFUL
1>
1>  Total time: 6 mins 5.343 secs
1>  Command finished with error code 0: cmd /s /c ""C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\gradlew.bat" cdvBuildRelease -b "C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\platforms\android\build.gradle" -Dorg.gradle.daemon=true -Pandroid.useDeprecatedNdk=true"
1>  Built the following apk(s):
1>      C:/Users/poury/Documents/Visual Studio 2015/Projects/bazimTest/bazimTest/platforms/android/build/outputs/apk/android-release-unsigned.apk
1>  No scripts found for hook "after_build".
1>  No scripts found for hook "after_compile".
1>  ------ Copying back to project: Android
1>  ------ Copied platforms\android\build\outputs\apk\android-debug-unaligned.apk to C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bin\Android\Release\android-debug-unaligned.apk
1>  ------ Copied platforms\android\build\outputs\apk\android-debug.apk to C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bin\Android\Release\android-debug.apk
1>  ------ Copied platforms\android\build\outputs\apk\android-release-unsigned.apk to C:\Users\poury\Documents\Visual Studio 2015\Projects\bazimTest\bazimTest\bin\Android\Release\android-release-unsigned.apk
1>  ------ Done copying compiled files: Android
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

Answer 1

I had this issue and the solution made me feel silly - this is the step in the build process when the prompt for the key's password opens up. The prompt opened on another monitor and I thought build had frozen. The prompt looks like this