Fix `--message-format JSON` when rustc emits non-JSON warnings#3410

Merged

bors merged 2 commits intorust-lang:masterfrom fmdkdd:fix-3390-message-format-parse-stderr

Dec 19, 2016

+66-9

Commits on Dec 15, 2016

Fix --message-format JSON when rustc emits non-JSON warnings
fmdkdd
committed

Commits on Dec 16, 2016

Add a test for --message-format parsing the mixed output of rustc
fmdkdd
committed