tree 4a4de4a6654e23a822d2b0ddf15af8974ab4d1a9
parent 91d3e442e7b9a6109e52d0532e2d18835289fbbf
author David Pursehouse <dpursehouse@collab.net> 1575249557 +0900
committer David Pursehouse <dpursehouse@collab.net> 1579777898 +0900

ErrorProne: Enable and fix UnusedException check

Enable UnusedException at ERROR level which causes the build to fail
in many places with:

  [UnusedException] This catch block catches an symbol and re-throws
  another, but swallows the caught symbol rather than setting it as a
  cause. This can make debugging harder.

Fix it by setting the caught exception as cause on the subsequently
thrown exception, or logging it.

Note: The grammatically incorrect error message is copy-pasted as-is
from the version of ErrorProne currently used in Bazel; it has been
fixed by [1] in the latest version.

[1] https://github.com/google/error-prone/commit/d57a39c

Change-Id: Ia7a7658e01740e844459a90226efdcf8592561e0