Pub oauth2 test fails with directory deletion error

[nex3]

Logs: http://build.chromium.org/p/client.dart/builders/vm-win32-release/builds/9979/steps/tests/logs/stdio

[munificent]

Issue #7103 has been merged into this issue.

---

cc @ErikCorryGoogle.
cc @ricowind.

[munificent]

Set owner to @munificent.
Added Accepted label.

[munificent]

Working now. The pub test harness will retry the delete a few times if it fails. It seems that we're trying to delete the sandbox directory before the spawned pub process has finished shutting down. I've checked and it looks like we aren't trying to delete until after both of its streams are closed and we have an exit code, but even then the initial delete still fails sometimes, hence the lame "sleep and retry" dance.

---

Added Fixed label.

[DartBot]

This issue has been moved to dart-lang/pub#316.