Use docker for all CI tests and images

Previously we were somewhat half-Docker, half-Travis, half apt-get, etc. This
commit alters the CI infrastructure to use Docker images for each target. This
should make it much easier to update the images and tweak various bits and
pieces of installed software. Additionally, it's also much clearer now what's
needed for each suite of tests!

Some images were updated a bit (e.g. musl is now 1.1.14), but other images
encountered failures when updating so they're not getting updated just yet.

.travis.yml

@@ -1,65 +1,106 @@
 language: rust
 sudo: required
 dist: trusty
-rust:
-  - 1.0.0
-  - stable
-  - beta
-  - nightly
 services:
   - docker
+install:
+  - curl https://static.rust-lang.org/rustup.sh |
+    sh -s -- --add-target=$TARGET --disable-sudo -y --prefix=`rustc --print sysroot`
 script:
-  - if [[ $TRAVIS_RUST_VERSION = nightly* ]]; then
-      sh ci/run-travis.sh;
-    elif [[ $TRAVIS_RUST_VERSION = "1.0.0" ]]; then
-      cargo build;
+  - cargo build
+  - cargo build --no-default-features
+  - cargo generate-lockfile --manifest-path libc-test/Cargo.toml
+  - if [[ $TRAVIS_OS_NAME = "linux" ]]; then
+      sh ci/run-docker.sh $TARGET;
     else
-      cargo build &&
-      cargo build --no-default-features &&
-      rustc ci/style.rs && ./style src;
+      export CARGO_TARGET_DIR=`pwd`/target;
+      sh ci/run.sh $TARGET;
     fi
+  - rustc ci/style.rs && ./style src
 osx_image: xcode7.3
-os:
-  - linux
-  - osx
 env:
-  matrix:
-    - ARCH=x86_64
-    - ARCH=i686
   global:
     secure: eIDEoQdTyglcsTD13zSGotAX2HDhRSXIaaTnVZTThqLSrySOc3/6KY3qmOc2Msf7XaBqfFy9QA+alk7OwfePp253eiy1Kced67ffjjFOytEcRT7FlQiYpcYQD6WNHZEj62/bJBO4LTM9sGtWNCTJVEDKW0WM8mUK7qNuC+honPM=
 matrix:
   include:
+    # 1.0.0 compat
     - os: linux
-      env: TARGET=arm-linux-androideabi DOCKER=alexcrichton/rust-slave-android:2015-11-22
-      rust: nightly
+      env: TARGET=x86_64-unknown-linux-gnu
+      rust: 1.0.0
+      script: cargo build
+      install:
+
+    # build documentation
+    - os: linux
+      env: TARGET=x86_64-unknown-linux-gnu
+      rust: stable
+      script: sh ci/dox.sh
+
+    # stable compat
+    - os: linux
+      env: TARGET=x86_64-unknown-linux-gnu
+      rust: stable
+    - os: linux
+      env: TARGET=i686-unknown-linux-gnu
+      rust: stable
+    - os: osx
+      env: TARGET=x86_64-apple-darwin
+      rust: stable
+    - os: osx
+      env: TARGET=i686-apple-darwin
+      rust: stable
+    - os: linux
+      env: TARGET=arm-linux-androideabi
+      rust: stable
     - os: linux
       env: TARGET=x86_64-unknown-linux-musl
-      rust: nightly
+      rust: stable
     - os: linux
       env: TARGET=arm-unknown-linux-gnueabihf
-      rust: nightly
-    - os: linux
-      env: TARGET=mips-unknown-linux-gnu DOCKER=alexcrichton/rust-libc-mips:2016-01-10
-      rust: nightly
+      rust: stable
     - os: linux
       env: TARGET=aarch64-unknown-linux-gnu
-      rust: nightly
+      rust: stable
     - os: osx
       env: TARGET=i386-apple-ios
-      rust: nightly
+      rust: stable
     - os: osx
       env: TARGET=x86_64-apple-ios
-      rust: nightly
+      rust: stable
+    - os: linux
+      env: TARGET=x86_64-rumprun-netbsd
+      rust: stable
+
+    # beta
+    - os: linux
+      env: TARGET=x86_64-unknown-linux-gnu
+      rust: beta
+    - os: osx
+      env: TARGET=x86_64-apple-darwin
+      rust: beta
+
+    # nightly
     - os: linux
-      env: TARGET=x86_64-rumprun-netbsd DOCKER=alexcrichton/rust-libc-rumprun:2015-11-27
+      env: TARGET=x86_64-unknown-linux-gnu
+      rust: nightly
+    - os: osx
+      env: TARGET=x86_64-apple-darwin
       rust: nightly
     - os: linux
-      env: TARGET=x86_64-unknown-freebsd QEMU=freebsd.qcow2
+      env: TARGET=mips-unknown-linux-gnu
+      # not sure why this has to be nightly...
       rust: nightly
+
+    # QEMU based targets that compile in an emulator
+    - os: linux
+      env: TARGET=x86_64-unknown-freebsd
+      rust: stable
     - os: linux
       env: TARGET=x86_64-unknown-openbsd QEMU=openbsd.qcow2
-      rust: nightly
+      rust: stable
+      script: sh ci/run-docker.sh $TARGET
+      install:
+
 notifications:
   email:
     on_success: never

ci/docker/aarch64-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,7 @@
+FROM ubuntu:14.04
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc libc6-dev ca-certificates \
+  gcc-aarch64-linux-gnu libc6-dev-arm64-cross qemu-user
+ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc \
+    PATH=$PATH:/rust/bin

ci/docker/arm-linux-androideabi/Dockerfile

@@ -0,0 +1,4 @@
+FROM alexcrichton/rust-slave-android:2015-11-22
+ENV CARGO_TARGET_ARM_LINUX_ANDROIDEABI_LINKER=arm-linux-androideabi-gcc \
+    PATH=$PATH:/rust/bin
+ENTRYPOINT ["sh"]

ci/docker/arm-unknown-linux-gnueabihf/Dockerfile

@@ -0,0 +1,7 @@
+FROM ubuntu:16.04
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc libc6-dev ca-certificates \
+  gcc-arm-linux-gnueabihf libc6-dev-armhf-cross qemu-user
+ENV CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
+    PATH=$PATH:/rust/bin

ci/docker/i686-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,5 @@
+FROM ubuntu:16.04
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc-multilib libc6-dev ca-certificates
+ENV PATH=$PATH:/rust/bin

ci/docker/mips-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,13 @@
+FROM ubuntu:15.10
+
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+        software-properties-common gcc libc6-dev qemu-user
+RUN add-apt-repository ppa:angelsl/mips-cross
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+        gcc-5-mips-linux-gnu libc6-dev-mips-cross
+
+ENV CARGO_TARGET_MIPS_UNKNOWN_LINUX_GNU_LINKER=mips-linux-gnu-gcc-5 \
+    CC_mips_unknown_linux_gnu=mips-linux-gnu-gcc-5 \
+    PATH=$PATH:/rust/bin

ci/docker/x86_64-rumprun-netbsd/Dockerfile

@@ -0,0 +1,6 @@
+FROM mato/rumprun-toolchain-hw-x86_64
+USER root
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  qemu
+ENV PATH=$PATH:/rust/bin

ci/docker/x86_64-unknown-freebsd/Dockerfile

@@ -0,0 +1,13 @@
+FROM alexcrichton/rust-slave-linux-cross:2016-04-15
+USER root
+
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  qemu qemu-kvm kmod cpu-checker
+
+ENTRYPOINT ["sh"]
+
+ENV PATH=$PATH:/rust/bin \
+    QEMU=freebsd.qcow2 \
+    CAN_CROSS=1 \
+    CARGO_TARGET_X86_64_UNKNOWN_FREEBSD_LINKER=x86_64-unknown-freebsd10-gcc

ci/docker/x86_64-unknown-linux-gnu/Dockerfile

@@ -0,0 +1,5 @@
+FROM ubuntu:16.04
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc libc6-dev ca-certificates
+ENV PATH=$PATH:/rust/bin

ci/docker/x86_64-unknown-linux-musl/Dockerfile

@@ -0,0 +1,13 @@
+FROM ubuntu:16.04
+
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc make libc6-dev git curl ca-certificates
+RUN curl https://www.musl-libc.org/releases/musl-1.1.14.tar.gz | \
+    tar xzf - && \
+    cd musl-1.1.14 && \
+    ./configure --prefix=/musl-x86_64 && \
+    make install -j4 && \
+    cd .. && \
+    rm -rf musl-1.1.14
+ENV PATH=$PATH:/musl-x86_64/bin:/rust/bin

ci/docker/x86_64-unknown-openbsd/Dockerfile

@@ -0,0 +1,7 @@
+FROM ubuntu:16.04
+
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends \
+  gcc libc6-dev qemu qemu-kvm curl ca-certificates kmod cpu-checker
+ENV PATH=$PATH:/rust/bin \
+    QEMU=openbsd.qcow2

ci/run-docker.sh

@@ -0,0 +1,25 @@
+# Small script to run tests for a target (or all targets) inside all the
+# respective docker images.
+
+set -ex
+
+run() {
+    echo $1
+    docker build -t libc ci/docker/$1
+    docker run \
+      -v `rustc --print sysroot`:/rust:ro \
+      -v `pwd`:/checkout:ro \
+      -e CARGO_TARGET_DIR=/tmp/target \
+      -w /checkout \
+      --privileged \
+      -it libc \
+      ci/run.sh $1
+}
+
+if [ -z "$1" ]; then
+  for d in `ls ci/docker/`; do
+    run $d
+  done
+else
+  run $1
+fi

ci/run-qemu.sh

@@ -15,12 +15,9 @@ cp -r $ROOT/libc /tmp/libc
 cd /tmp/libc
 
 TARGET=$(cat $ROOT/TARGET)
+export CARGO_TARGET_DIR=/tmp
 
 case $TARGET in
-  *-freebsd)
-    sudo pkg install -y rust cargo
-    ;;
-
   *-openbsd)
     pkg_add rust curl gcc-4.8.4p4
     curl https://static.rust-lang.org/cargo-dist/2015-04-02/cargo-nightly-x86_64-unknown-openbsd.tar.gz | \