Steps to Reproduce

If you run "flutter test" on zsh, you got that error. But if you run flutter under bash, it works fine.

Flutter Doctor

[✓] Flutter (on Linux, channel master)
• Flutter at /usr/local/google/home/kaiyuanw/vanadium/release/projects/baku/deps/flutter
• Framework revision 639532b (88 minutes ago), engine revision bb98655

[✓] Android toolchain - develop for Android devices (Android SDK 23.0.3)
• Android SDK at /usr/local/google/home/kaiyuanw/Intern/Android/Sdk
• Platform android-N, build-tools 23.0.3
• Java(TM) SE Runtime Environment (build 1.8.0_91-b14)

[✓] Atom - a lightweight development environment for Flutter
• flutter plugin version 0.2.3
• dartlang plugin version 0.6.27

Logs and Crash Reports

Failed to load "/path/to/myapp/test/unit_test.dart": Connection closed before test suit loaded.

For more information about diagnosing and reporting Flutter bugs, please see https://flutter.io/bug-reports/.