Remove Appveyor

README.md

-[![Build Status](https://dev.azure.com/rust-lang/libc/_apis/build/status/rust-lang.libc?branchName=master)](https://dev.azure.com/rust-lang/libc/_build/latest?definitionId=11&branchName=master) [![Appveyor Status]][Appveyor] [![Cirrus-CI Status]][Cirrus-CI] [![Latest Version]][crates.io] [![Documentation]][docs.rs] ![License]
+[![Azure Status]][Azure] [![Cirrus-CI Status]][Cirrus-CI] [![Latest Version]][crates.io] [![Documentation]][docs.rs] ![License]
 
 libc - Raw FFI bindings to platforms' system libraries
 ====
@@ -91,10 +91,8 @@ Unless you explicitly state otherwise, any contribution intentionally submitted
 for inclusion in `libc` by you, as defined in the Apache-2.0 license, shall be
 dual licensed as above, without any additional terms or conditions.
 
-[Travis-CI]: https://travis-ci.com/rust-lang/libc
-[Travis-CI Status]: https://travis-ci.com/rust-lang/libc.svg?branch=master
-[Appveyor]: https://ci.appveyor.com/project/rust-lang-libs/libc
-[Appveyor Status]: https://ci.appveyor.com/api/projects/status/github/rust-lang/libc?svg=true
+[Azure Status]: https://dev.azure.com/rust-lang/libc/_apis/build/status/rust-lang.libc?branchName=master
+[Azure]: https://dev.azure.com/rust-lang/libc/_build/latest?definitionId=11&branchName=master
 [Cirrus-CI]: https://cirrus-ci.com/github/rust-lang/libc
 [Cirrus-CI Status]: https://api.cirrus-ci.com/github/rust-lang/libc.svg
 [crates.io]: https://crates.io/crates/libc

appveyor.yml

-environment:
-  matrix:
-  - TARGET: x86_64-pc-windows-gnu
-    MSYS_BITS: 64
-    ARCH: x86_64
-  - TARGET: i686-pc-windows-gnu
-    MSYS_BITS: 32
-    ARCH: i686
-  - TARGET: x86_64-pc-windows-msvc
-  - TARGET: i686-pc-windows-msvc
-install:
-  - if NOT defined APPVEYOR_PULL_REQUEST_NUMBER if "%APPVEYOR_REPO_BRANCH%" == "master" appveyor exit
-  - if defined MSYS_BITS set PATH=C:\msys64\mingw%MSYS_BITS%\bin;C:\msys64\usr\bin;%PATH%;
-  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-nightly-${env:TARGET}.exe"
-  - rust-nightly-%TARGET%.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
-  - set PATH=%PATH%;C:\Program Files (x86)\Rust\bin
-  - if defined MSYS_BITS for %%I in (crt2.o dllcrt2.o libmsvcrt.a) do xcopy /Y "C:\msys64\mingw%MSYS_BITS%\%ARCH%-w64-mingw32\lib\%%I" "C:\Program Files (x86)\Rust\lib\rustlib\%TARGET%\lib"
-  - rustc -V
-  - cargo -V
-
-build: false
-
-test_script:
-  - cargo -vv test --target %TARGET%
-  - cargo -vv test --no-default-features --target %TARGET%
-  - cargo -vv test --manifest-path libc-test/Cargo.toml --target %TARGET%