Upgrade OS versions used by Travis.

We were specifying (or defaulting to) versions which are too old for the TensorFlow prebuilt binaries.
adamcrume · Oct 18, 2020 · b3f2ffe · b3f2ffe
1 parent 68ed220
commit b3f2ffe
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,6 @@
 language: rust
-dist: trusty # still in beta, but required for the prebuilt TF binaries
+dist: bionic
+osx_image: xcode12
 
 cache:
   cargo: true