$ rm -rf agera/

$ git clone https://github.com/google/agera.git
Cloning into 'agera'...
remote: Counting objects: 355, done.
remote: Compressing objects: 100% (45/45), done.
remote: Total 355 (delta 19), reused 14 (delta 14), pack-reused 283
Receiving objects: 100% (355/355), 612.50 KiB | 0 bytes/s, done.
Resolving deltas: 100% (89/89), done.
Checking connectivity... done.

$ cd agera/

$ ./gradlew :testapp:assembleDebug
:agera:preBuild UP-TO-DATE
:agera:preReleaseBuild UP-TO-DATE
:agera:compileReleaseNdk UP-TO-DATE
:agera:compileLint
:agera:copyReleaseLint UP-TO-DATE
:agera:checkReleaseManifest
:agera:prepareReleaseDependencies
:agera:compileReleaseAidl
:agera:compileReleaseRenderscript
:agera:generateReleaseBuildConfig
:agera:generateReleaseAssets UP-TO-DATE
:agera:mergeReleaseAssets
:agera:generateReleaseResValues
:agera:generateReleaseResources
:agera:packageReleaseResources
:agera:processReleaseManifest
:agera:processReleaseResources
:agera:generateReleaseSources
:agera:compileReleaseJavaWithJavac
./agera/agera/src/main/java/com/google/android/agera/Common.java:104: error: cannot find symbol
  static final class WorkerHandler extends Handler {
                                           ^
  symbol:   class Handler
  location: class Common
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:106: error: incompatible types: WorkerHandler cannot be converted to Handler
      add(updatable, workerHandler());
                                  ^
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:108: error: cannot find symbol
        handler.obtainMessage(WorkerHandler.MSG_FIRST_ADDED, this).sendToTarget();
               ^
  symbol:   method obtainMessage(int,Worker)
  location: variable handler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:115: error: cannot find symbol
        handler.obtainMessage(MSG_LAST_REMOVED, this).sendToTarget();
               ^
  symbol:   method obtainMessage(int,Worker)
  location: variable handler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:120: error: cannot find symbol
      handler.obtainMessage(MSG_UPDATE, this).sendToTarget();
             ^
  symbol:   method obtainMessage(int,Worker)
  location: variable handler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:148: error: cannot find symbol
          ((WorkerHandler) updatablesAndHandlers[index + 1]).removeMessages(
                                                            ^
  symbol:   method removeMessages(int,Updatable)
  location: class WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:165: error: cannot find symbol
          if (handler.getLooper() == Looper.myLooper()) {
                     ^
  symbol:   method getLooper()
  location: variable handler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/BaseObservable.java:168: error: cannot find symbol
            handler.obtainMessage(WorkerHandler.MSG_CALL_UPDATABLE, updatable).sendToTarget();
                   ^
  symbol:   method obtainMessage(int,Updatable)
  location: variable handler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/Observables.java:225: error: cannot find symbol
      workerHandler.removeMessages(WorkerHandler.MSG_CALL_LOW_PASS_UPDATE, this);
                   ^
  symbol:   method removeMessages(int,LowPassFilterObservable)
  location: variable workerHandler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/Observables.java:231: error: cannot find symbol
          workerHandler.obtainMessage(WorkerHandler.MSG_CALL_LOW_PASS_UPDATE, this), (long) 0);
                       ^
  symbol:   method obtainMessage(int,LowPassFilterObservable)
  location: variable workerHandler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/Observables.java:235: error: cannot find symbol
      workerHandler.removeMessages(WorkerHandler.MSG_CALL_LOW_PASS_UPDATE, this);
                   ^
  symbol:   method removeMessages(int,LowPassFilterObservable)
  location: variable workerHandler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/Observables.java:243: error: cannot find symbol
            workerHandler.obtainMessage(WorkerHandler.MSG_CALL_LOW_PASS_UPDATE, this),
                         ^
  symbol:   method obtainMessage(int,LowPassFilterObservable)
  location: variable workerHandler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/Common.java:113: error: method does not override or implement a method from a supertype
    @Override
    ^
./agera/agera/src/main/java/com/google/android/agera/CompiledRepository.java:214: error: cannot find symbol
      workerHandler.obtainMessage(MSG_CALL_ACKNOWLEDGE_CANCEL, this).sendToTarget();
                   ^
  symbol:   method obtainMessage(int,CompiledRepository)
  location: variable workerHandler of type WorkerHandler
./agera/agera/src/main/java/com/google/android/agera/CompiledRepository.java:244: error: cannot find symbol
      workerHandler.obtainMessage(MSG_CALL_MAYBE_START_FLOW, this).sendToTarget();
                   ^
  symbol:   method obtainMessage(int,CompiledRepository)
  location: variable workerHandler of type WorkerHandler
Note: ./agera/agera/src/main/java/com/google/android/agera/RepositoryCompiler.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
15 errors
:agera:compileReleaseJavaWithJavac FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':agera:compileReleaseJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 8.035 secs