Auto merge of #23276 - servo:jdm-patch-38, r=Manishearth

Install gcc-6 on TravisCI.

This is a followup for #23182.

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bors-servo 2019-04-27 02:52:40 -04:00 committed by GitHub
commit 6cf3ba9db2
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@ -64,6 +64,7 @@ matrix:
packages:
- autoconf2.13
- cmake
- gcc-6
- g++-6
- gperf
- libosmesa6-dev