message: Fix Travis CI build
diff: language: rust
  -matrix:
  +jobs:
  include:
  - rust: 1.37.0
  env:
  @@ -18,7 +18,10 @@ branches:
  only:
  - master
  before_script:
  - - rustup component add rustfmt
  + - |
  + if [ "${CHECKFMT}" == "1"]; then
  + rustup component add rustfmt --toolchain stable
  + fi
  script:
  - |
  cargo build --verbose --no-default-features &&
  