message: Add windows-gnu CI
diff: @@ -41,6 +41,9 @@ jobs:
  x86_64-msvc:
  TOOLCHAIN: stable-x86_64-pc-windows-msvc
  OTHER_TARGET: i686-pc-windows-msvc
  + x86_64-gnu:
  + TOOLCHAIN: nightly-x86_64-pc-windows-gnu
  + OTHER_TARGET: i686-pc-windows-gnu
  - job: rustfmt
  pool:
  