Add MUSL to CI

.travis.yml

@@ -19,6 +19,9 @@ matrix:
     - os: linux
       env: TARGET=arm-linux-androideabi
       rust: stable
+    - os: linux
+      env: TARGET=x86_64-unknown-linux-musl
+      rust: nightly-2015-09-08
 addons:
   apt:
     packages:

ci/run-travis.sh

@@ -11,7 +11,16 @@ export HOST=$ARCH-$OS
 # clang has better error messages and implements alignof more broadly
 export CC=clang
 
-if [ "$TARGET" = "" ]; then
+if [ "$TARGET" = "arm-linux-androideabi" ]; then
+  # Pull a pre-built docker image for testing android, then run tests entirely
+  # within that image.
+  docker pull alexcrichton/rust-libc-test
+  docker run -v `pwd`:/clone -t alexcrichton/rust-libc-test sh ci/run.sh $TARGET
+elif [ "$TARGET" = "x86_64-unknown-linux-gnu" ]; then
+  curl -sO https://people.mozilla.org/~acrichton/libc-test/2015-09-08/x86_64-unknown-linux-musl.tar.gz | \
+    tar xzf -C $HOME/rust/lib/rustlib
+  sh ci/run.sh $TARGET
+else
   # Download and install the relevant target locally, then run tests
   curl -sO https://static.rust-lang.org/dist/rust-$TRAVIS_RUST_VERSION-$HOST.tar.gz
   tar xf rust-$TRAVIS_RUST_VERSION-$HOST.tar.gz
@@ -19,13 +28,4 @@ if [ "$TARGET" = "" ]; then
   mv rust-$TRAVIS_RUST_VERSION-$HOST/rustc/lib/rustlib/$HOST \
      $HOME/rust/lib/rustlib
   sh ci/run.sh $HOST
-
-elif [ "$TARGET" = "arm-linux-androideabi" ]; then
-  # Pull a pre-built docker image for testing android, then run tests entirely
-  # within that image.
-  docker pull alexcrichton/rust-libc-test
-  docker run -v `pwd`:/clone -t alexcrichton/rust-libc-test sh ci/run.sh $TARGET
-else
-  echo "Unknown target: $TARGET"
-  exit 1
 fi