bionic -> xenial as its on whitelist

diff --git a/.travis.yml b/.travis.yml
index 516df54d8bb4fff804e64aa611a5795fad0abde1..8d1ad3006507084f87433f03fac7751dc6628453 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -104,7 +104,7 @@ matrix:
       addons:
         apt:
           sources:
-            - llvm-toolchain-bionic-8.0
+            - llvm-toolchain-xenial-8
           packages:
             - clang-8.0
             - gperf