Remove Windows from Travis build matrix
-os:
- - osx
- - windows
+os: osx
language: rust
rust:
- nightly-2019-05-22
-matrix:
- allow_failures:
- - os: windows
-
before_install:
- if [ ${TRAVIS_OS_NAME} == "osx" ]; then curl -L https://github.com/mozilla/grcov/releases/download/v0.4.3/grcov-osx-x86_64.tar.bz2 | tar jxf -; fi
