Before:

  /private/var/tmp/_bazel_robfig/1db08896ecff7e5e96a745981c3b77e6/sandbox/darwin-sandbox/28708/execroot/corp/gocode/src/corp/analytics/searchterms/redshiftcopier.go:14:2: imported and not used: "corp/net/rpc"

  compilepkg: nogo: errors found by nogo during build-time code analysis:
  /private/var/tmp/_bazel_robfig/1db08896ecff7e5e96a745981c3b77e6/sandbox/darwin-sandbox/29923/execroot/corp/gocode/src/corp/net/rpc/server.go:125:7: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak

After:

  gocode/src/corp/analytics/searchterms/redshiftcopier.go:14:2: imported and not used: "corp/net/rpc"

  compilepkg: nogo: errors found by nogo during build-time code analysis:
  gocode/src/corp/net/rpc/server.go:125:7: the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak

Fixes bazelbuild#2061