Migrate from azure pipelines to Github actions (#226)

Should make user management easier and also helps follow the repository
when it's renamed.

Author: alexcrichton

libm/.github/workflows/main.yml

@@ -0,0 +1,67 @@
+name: CI
+on: [push, pull_request]
+
+jobs:
+  docker:
+    name: Docker
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target:
+        - aarch64-unknown-linux-gnu
+        - arm-unknown-linux-gnueabi
+        - arm-unknown-linux-gnueabihf
+        - armv7-unknown-linux-gnueabihf
+        - i686-unknown-linux-gnu
+        - mips-unknown-linux-gnu
+        - mips64-unknown-linux-gnuabi64
+        - mips64el-unknown-linux-gnuabi64
+        - powerpc-unknown-linux-gnu
+        - powerpc64-unknown-linux-gnu
+        - powerpc64le-unknown-linux-gnu
+        - x86_64-unknown-linux-gnu
+    steps:
+    - uses: actions/checkout@master
+    - name: Install Rust
+      run: rustup update nightly && rustup default nightly
+    - run: rustup target add ${{ matrix.target }}
+    - run: rustup target add x86_64-unknown-linux-musl
+    - run: cargo generate-lockfile
+    - run: ./ci/run-docker.sh ${{ matrix.target }}
+
+  rustfmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Install Rust
+      run: rustup update stable && rustup default stable && rustup component add rustfmt
+    - run: cargo fmt -- --check
+
+  wasm:
+    name: WebAssembly
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Install Rust
+      run: rustup update nightly && rustup default nightly
+    - run: rustup target add wasm32-unknown-unknown
+    - run: cargo build --target wasm32-unknown-unknown
+
+  cb:
+    name: "The compiler-builtins crate works"
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Install Rust
+      run: rustup update nightly && rustup default nightly
+    - run: cargo build -p cb
+
+  benchmarks:
+    name: Benchmarks
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Install Rust
+      run: rustup update nightly && rustup default nightly
+    - run: cargo bench --all

libm/README.md

@@ -1,7 +1,5 @@
 # `libm`
 
-[![Build Status](https://dev.azure.com/rust-lang/libm/_apis/build/status/rust-lang-nursery.libm?branchName=master)](https://dev.azure.com/rust-lang/libm/_build/latest?definitionId=7&branchName=master)
-
 A port of [MUSL]'s libm to Rust.
 
 [MUSL]: https://www.musl-libc.org/
@@ -27,7 +25,7 @@ The API documentation can be found [here](https://docs.rs/libm).
 ## Benchmark
 [benchmark]: #benchmark
 
-The benchmarks are located in `crates/libm-bench` and require a nightly Rust toolchain. 
+The benchmarks are located in `crates/libm-bench` and require a nightly Rust toolchain.
 To run all benchmarks:
 
 > cargo +nightly bench --all