Prevent starting the reporter twice

If the start() method is called twice, the reporter will throw an
IllegalArgumentException and the plugin will fail to load.

Catch this case and log a warning.

This is a workaround for issue 5806.

Change-Id: Ic7134381fdf8173a30cf575a40a67dcc04921247
1 file changed
tree: af4bc46cabe1858e713264b4be77cd0cf9c8b254
  1. src/
  2. BUILD
  3. external_plugin_deps.bzl