Pin Travis Max OS X version

Default Travis Mac OS X version causes binary to abort with trap 6.
manugarg · Mar 4, 2018 · 1854fcb · 1854fcb
1 parent db3473d
commit 1854fcb
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,7 @@ matrix:
  - os: osx
    env: DIST="sdist bdist_wheel"
    language: generic
+   osx_image: xcode9.3beta
 
 env:
  global: