travis: Split all dist builders in two

Previously we would use one builder on Travis to produce two sets of host
compilers for two different targets. Unfortunately though we've recently
increased how much we're building for each target so this is starting to take
unnecessarily long (#40804). This commit splits the dist builders in two by
ensuring that we only dist one target on each builder, which should take a much
shorter amount of time. This should also unblock other work such as landing the
RLS (#40584).

.travis.yml

@@ -15,19 +15,27 @@ matrix:
     - env: IMAGE=arm-android
     - env: IMAGE=armhf-gnu
     - env: IMAGE=cross DEPLOY=1
+    - env: IMAGE=dist-aarch64-linux DEPLOY=1
     - env: IMAGE=dist-android DEPLOY=1
     - env: IMAGE=dist-arm-linux DEPLOY=1
-    - env: IMAGE=dist-armv7-aarch64-linux DEPLOY=1
-    - env: IMAGE=dist-freebsd DEPLOY=1
-    - env: IMAGE=dist-i586-gnu-i686-musl DEPLOY=1
+    - env: IMAGE=dist-armhf-linux DEPLOY=1
+    - env: IMAGE=dist-armv7-linux DEPLOY=1
     - env: IMAGE=dist-fuchsia DEPLOY=1
+    - env: IMAGE=dist-i586-gnu-i686-musl DEPLOY=1
+    - env: IMAGE=dist-i686-freebsd DEPLOY=1
+    - env: IMAGE=dist-i686-linux DEPLOY=1
     - env: IMAGE=dist-mips-linux DEPLOY=1
     - env: IMAGE=dist-mips64-linux DEPLOY=1
+    - env: IMAGE=dist-mips64el-linux DEPLOY=1
+    - env: IMAGE=dist-mipsel-linux DEPLOY=1
     - env: IMAGE=dist-powerpc-linux DEPLOY=1
     - env: IMAGE=dist-powerpc64-linux DEPLOY=1
-    - env: IMAGE=dist-s390x-linux-netbsd DEPLOY=1
-    - env: IMAGE=dist-x86-linux DEPLOY=1
+    - env: IMAGE=dist-powerpc64le-linux DEPLOY=1
+    - env: IMAGE=dist-s390x-linux DEPLOY=1
+    - env: IMAGE=dist-x86_64-freebsd DEPLOY=1
+    - env: IMAGE=dist-x86_64-linux DEPLOY=1
     - env: IMAGE=dist-x86_64-musl DEPLOY=1
+    - env: IMAGE=dist-x86_64-netbsd DEPLOY=1
     - env: IMAGE=emscripten
     - env: IMAGE=i686-gnu
     - env: IMAGE=i686-gnu-nopt

src/ci/docker/dist-armv7-aarch64-linux/Dockerfile → src/ci/docker/dist-aarch64-linux/Dockerfile

@@ -56,8 +56,7 @@ RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
 USER rustbuild
 WORKDIR /tmp
 
-COPY armv7-linux-gnueabihf.config /tmp/
-COPY armv7-linux-gnueabihf.config aarch64-linux-gnu.config build-toolchains.sh /tmp/
+COPY aarch64-linux-gnu.config build-toolchains.sh /tmp/
 RUN ./build-toolchains.sh
 
 USER root
@@ -67,17 +66,12 @@ RUN curl -o /usr/local/bin/sccache \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/aarch64-unknown-linux-gnueabi/bin
-ENV PATH=$PATH:/x-tools/armv7-unknown-linux-gnueabihf/bin
 
 ENV CC_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnueabi-gcc \
     AR_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnueabi-ar \
-    CXX_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnueabi-g++ \
-    CC_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-gcc \
-    AR_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-ar \
-    CXX_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-g++
+    CXX_aarch64_unknown_linux_gnu=aarch64-unknown-linux-gnueabi-g++
 
-ENV HOSTS=armv7-unknown-linux-gnueabihf
-ENV HOSTS=$HOSTS,aarch64-unknown-linux-gnu
+ENV HOSTS=aarch64-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-aarch64-linux/build-toolchains.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  rm /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  set -x
+}
+
+mkdir build
+cd build
+cp ../aarch64-linux-gnu.config .config
+ct-ng oldconfig
+hide_output ct-ng build
+cd ..
+rm -rf build

src/ci/docker/dist-arm-linux/Dockerfile

@@ -56,7 +56,7 @@ RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
 USER rustbuild
 WORKDIR /tmp
 
-COPY arm-linux-gnueabihf.config arm-linux-gnueabi.config build-toolchains.sh /tmp/
+COPY arm-linux-gnueabi.config build-toolchains.sh /tmp/
 RUN ./build-toolchains.sh
 
 USER root
@@ -66,17 +66,12 @@ RUN curl -o /usr/local/bin/sccache \
       chmod +x /usr/local/bin/sccache
 
 ENV PATH=$PATH:/x-tools/arm-unknown-linux-gnueabi/bin
-ENV PATH=$PATH:/x-tools/arm-unknown-linux-gnueabihf/bin
 
 ENV CC_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-gcc \
     AR_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-ar \
-    CXX_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-g++ \
-    CC_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-gcc \
-    AR_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-ar \
-    CXX_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-g++
+    CXX_arm_unknown_linux_gnueabi=arm-unknown-linux-gnueabi-g++
 
 ENV HOSTS=arm-unknown-linux-gnueabi
-ENV HOSTS=$HOSTS,arm-unknown-linux-gnueabihf
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-arm-linux/build-toolchains.sh

@@ -35,11 +35,3 @@ ct-ng oldconfig
 hide_output ct-ng build
 cd ..
 rm -rf build
-
-mkdir build
-cd build
-cp ../arm-linux-gnueabihf.config .config
-ct-ng oldconfig
-hide_output ct-ng build
-cd ..
-rm -rf build

src/ci/docker/dist-armhf-linux/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  automake \
+  bison \
+  bzip2 \
+  ca-certificates \
+  cmake \
+  curl \
+  file \
+  flex \
+  g++ \
+  gawk \
+  gdb \
+  git \
+  gperf \
+  help2man \
+  libncurses-dev \
+  libtool-bin \
+  make \
+  patch \
+  python2.7 \
+  sudo \
+  texinfo \
+  wget \
+  xz-utils \
+  libssl-dev \
+  pkg-config
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+# Ubuntu 16.04 (this contianer) ships with make 4, but something in the
+# toolchains we build below chokes on that, so go back to make 3
+RUN curl https://ftp.gnu.org/gnu/make/make-3.81.tar.gz | tar xzf - && \
+      cd make-3.81 && \
+      ./configure --prefix=/usr && \
+      make && \
+      make install && \
+      cd .. && \
+      rm -rf make-3.81
+
+RUN curl http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.22.0.tar.bz2 | \
+      tar xjf - && \
+      cd crosstool-ng && \
+      ./configure --prefix=/usr/local && \
+      make -j$(nproc) && \
+      make install && \
+      cd .. && \
+      rm -rf crosstool-ng
+
+RUN groupadd -r rustbuild && useradd -m -r -g rustbuild rustbuild
+RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
+USER rustbuild
+WORKDIR /tmp
+
+COPY arm-linux-gnueabihf.config build-toolchains.sh /tmp/
+RUN ./build-toolchains.sh
+
+USER root
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV PATH=$PATH:/x-tools/arm-unknown-linux-gnueabihf/bin
+
+ENV CC_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-gcc \
+    AR_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-ar \
+    CXX_arm_unknown_linux_gnueabihf=arm-unknown-linux-gnueabihf-g++
+
+ENV HOSTS=arm-unknown-linux-gnueabihf
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-armhf-linux/build-toolchains.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  rm /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  set -x
+}
+
+mkdir build
+cd build
+cp ../arm-linux-gnueabihf.config .config
+ct-ng oldconfig
+hide_output ct-ng build
+cd ..
+rm -rf build

src/ci/docker/dist-armv7-linux/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  automake \
+  bison \
+  bzip2 \
+  ca-certificates \
+  cmake \
+  curl \
+  file \
+  flex \
+  g++ \
+  gawk \
+  gdb \
+  git \
+  gperf \
+  help2man \
+  libncurses-dev \
+  libtool-bin \
+  make \
+  patch \
+  python2.7 \
+  sudo \
+  texinfo \
+  wget \
+  xz-utils \
+  libssl-dev \
+  pkg-config
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+# Ubuntu 16.04 (this contianer) ships with make 4, but something in the
+# toolchains we build below chokes on that, so go back to make 3
+RUN curl https://ftp.gnu.org/gnu/make/make-3.81.tar.gz | tar xzf - && \
+      cd make-3.81 && \
+      ./configure --prefix=/usr && \
+      make && \
+      make install && \
+      cd .. && \
+      rm -rf make-3.81
+
+RUN curl http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.22.0.tar.bz2 | \
+      tar xjf - && \
+      cd crosstool-ng && \
+      ./configure --prefix=/usr/local && \
+      make -j$(nproc) && \
+      make install && \
+      cd .. && \
+      rm -rf crosstool-ng
+
+RUN groupadd -r rustbuild && useradd -m -r -g rustbuild rustbuild
+RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
+USER rustbuild
+WORKDIR /tmp
+
+COPY build-toolchains.sh armv7-linux-gnueabihf.config /tmp/
+RUN ./build-toolchains.sh
+
+USER root
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV PATH=$PATH:/x-tools/armv7-unknown-linux-gnueabihf/bin
+
+ENV CC_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-gcc \
+    AR_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-ar \
+    CXX_armv7_unknown_linux_gnueabihf=armv7-unknown-linux-gnueabihf-g++
+
+ENV HOSTS=armv7-unknown-linux-gnueabihf
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-armv7-aarch64-linux/build-toolchains.sh → src/ci/docker/dist-armv7-linux/build-toolchains.sh

@@ -35,11 +35,3 @@ ct-ng oldconfig
 hide_output ct-ng build
 cd ..
 rm -rf build
-
-mkdir build
-cd build
-cp ../aarch64-linux-gnu.config .config
-ct-ng oldconfig
-hide_output ct-ng build
-cd ..
-rm -rf build

src/ci/docker/dist-freebsd/Dockerfile → src/ci/docker/dist-i686-freebsd/Dockerfile

@@ -17,7 +17,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   pkg-config
 
 COPY build-toolchain.sh /tmp/
-RUN /tmp/build-toolchain.sh x86_64
 RUN /tmp/build-toolchain.sh i686
 
 RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
@@ -30,15 +29,11 @@ RUN curl -o /usr/local/bin/sccache \
       chmod +x /usr/local/bin/sccache
 
 ENV \
-    AR_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-ar \
-    CC_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-gcc \
-    CXX_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-g++ \
     AR_i686_unknown_freebsd=i686-unknown-freebsd10-ar \
     CC_i686_unknown_freebsd=i686-unknown-freebsd10-gcc \
     CXX_i686_unknown_freebsd=i686-unknown-freebsd10-g++
 
-ENV HOSTS=x86_64-unknown-freebsd
-ENV HOSTS=$HOSTS,i686-unknown-freebsd
+ENV HOSTS=i686-unknown-freebsd
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-x86-linux/Dockerfile → src/ci/docker/dist-i686-linux/Dockerfile

@@ -80,7 +80,6 @@ RUN curl -o /usr/local/bin/sccache \
       chmod +x /usr/local/bin/sccache
 
 ENV HOSTS=i686-unknown-linux-gnu
-ENV HOSTS=$HOSTS,x86_64-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS \
       --host=$HOSTS \

src/ci/docker/dist-mips-linux/Dockerfile

@@ -13,7 +13,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   gdb \
   xz-utils \
   g++-mips-linux-gnu \
-  g++-mipsel-linux-gnu \
   libssl-dev \
   pkg-config
 
@@ -27,7 +26,6 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV HOSTS=mips-unknown-linux-gnu
-ENV HOSTS=$HOSTS,mipsel-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-mips64-linux/Dockerfile

@@ -13,7 +13,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   gdb \
   xz-utils \
   g++-mips64-linux-gnuabi64 \
-  g++-mips64el-linux-gnuabi64 \
   libssl-dev \
   pkg-config
 
@@ -27,7 +26,6 @@ RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-ini
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
 
 ENV HOSTS=mips64-unknown-linux-gnuabi64
-ENV HOSTS=$HOSTS,mips64el-unknown-linux-gnuabi64
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-mips64el-linux/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  g++ \
+  make \
+  file \
+  curl \
+  ca-certificates \
+  python2.7 \
+  git \
+  cmake \
+  sudo \
+  gdb \
+  xz-utils \
+  g++-mips64el-linux-gnuabi64 \
+  libssl-dev \
+  pkg-config
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+ENV HOSTS=mips64el-unknown-linux-gnuabi64
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-mipsel-linux/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  g++ \
+  make \
+  file \
+  curl \
+  ca-certificates \
+  python2.7 \
+  git \
+  cmake \
+  sudo \
+  gdb \
+  xz-utils \
+  g++-mipsel-linux-gnu \
+  libssl-dev \
+  pkg-config
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+ENV HOSTS=mipsel-unknown-linux-gnu
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-powerpc64-linux/Dockerfile

@@ -62,10 +62,6 @@ RUN ./build-powerpc64-toolchain.sh
 
 USER root
 
-RUN apt-get install -y --no-install-recommends rpm2cpio cpio
-COPY build-powerpc64le-toolchain.sh /tmp/
-RUN ./build-powerpc64le-toolchain.sh
-
 RUN curl -o /usr/local/bin/sccache \
       https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
@@ -75,13 +71,9 @@ ENV PATH=$PATH:/x-tools/powerpc64-unknown-linux-gnu/bin
 ENV \
     AR_powerpc64_unknown_linux_gnu=powerpc64-unknown-linux-gnu-ar \
     CC_powerpc64_unknown_linux_gnu=powerpc64-unknown-linux-gnu-gcc \
-    CXX_powerpc64_unknown_linux_gnu=powerpc64-unknown-linux-gnu-g++ \
-    AR_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-ar \
-    CC_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-gcc \
-    CXX_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-g++
+    CXX_powerpc64_unknown_linux_gnu=powerpc64-unknown-linux-gnu-g++
 
 ENV HOSTS=powerpc64-unknown-linux-gnu
-ENV HOSTS=$HOSTS,powerpc64le-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-powerpc64le-linux/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  automake \
+  bison \
+  bzip2 \
+  ca-certificates \
+  cmake \
+  curl \
+  file \
+  flex \
+  g++ \
+  gawk \
+  gdb \
+  git \
+  gperf \
+  help2man \
+  libncurses-dev \
+  libtool-bin \
+  make \
+  patch \
+  python2.7 \
+  sudo \
+  texinfo \
+  wget \
+  xz-utils \
+  libssl-dev \
+ pkg-config
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+# Ubuntu 16.04 (this contianer) ships with make 4, but something in the
+# toolchains we build below chokes on that, so go back to make 3
+RUN curl https://ftp.gnu.org/gnu/make/make-3.81.tar.gz | tar xzf - && \
+      cd make-3.81 && \
+      ./configure --prefix=/usr && \
+      make && \
+      make install && \
+      cd .. && \
+      rm -rf make-3.81
+
+RUN curl http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.22.0.tar.bz2 | \
+      tar xjf - && \
+      cd crosstool-ng && \
+      ./configure --prefix=/usr/local && \
+      make -j$(nproc) && \
+      make install && \
+      cd .. && \
+      rm -rf crosstool-ng
+
+RUN groupadd -r rustbuild && useradd -m -r -g rustbuild rustbuild
+RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
+USER rustbuild
+WORKDIR /tmp
+
+USER root
+
+RUN apt-get install -y --no-install-recommends rpm2cpio cpio
+COPY shared.sh build-powerpc64le-toolchain.sh /tmp/
+RUN ./build-powerpc64le-toolchain.sh
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV \
+    AR_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-ar \
+    CC_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-gcc \
+    CXX_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-g++
+
+ENV HOSTS=powerpc64le-unknown-linux-gnu
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-powerpc64le-linux/shared.sh

+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  set -x
+}

src/ci/docker/dist-s390x-linux-netbsd/Dockerfile → src/ci/docker/dist-s390x-linux/Dockerfile

@@ -60,27 +60,20 @@ COPY patches/ /tmp/patches/
 COPY s390x-linux-gnu.config build-s390x-toolchain.sh /tmp/
 RUN ./build-s390x-toolchain.sh
 
-COPY build-netbsd-toolchain.sh /tmp/
-RUN ./build-netbsd-toolchain.sh
-
 USER root
 
 RUN curl -o /usr/local/bin/sccache \
       https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
       chmod +x /usr/local/bin/sccache
 
-ENV PATH=$PATH:/x-tools/s390x-ibm-linux-gnu/bin:/x-tools/x86_64-unknown-netbsd/bin
+ENV PATH=$PATH:/x-tools/s390x-ibm-linux-gnu/bin
 
 ENV \
-    AR_x86_64_unknown_netbsd=x86_64--netbsd-ar \
-    CC_x86_64_unknown_netbsd=x86_64--netbsd-gcc-sysroot \
-    CXX_x86_64_unknown_netbsd=x86_64--netbsd-g++-sysroot \
     CC_s390x_unknown_linux_gnu=s390x-ibm-linux-gnu-gcc \
     AR_s390x_unknown_linux_gnu=s390x-ibm-linux-gnu-ar \
     CXX_s390x_unknown_linux_gnu=s390x-ibm-linux-gnu-g++
 
-ENV HOSTS=x86_64-unknown-netbsd
-ENV HOSTS=$HOSTS,s390x-unknown-linux-gnu
+ENV HOSTS=s390x-unknown-linux-gnu
 
 ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
 ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-x86_64-freebsd/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  g++ \
+  make \
+  file \
+  curl \
+  ca-certificates \
+  python2.7 \
+  git \
+  cmake \
+  sudo \
+  bzip2 \
+  xz-utils \
+  wget \
+  libssl-dev \
+  pkg-config
+
+COPY build-toolchain.sh /tmp/
+RUN /tmp/build-toolchain.sh x86_64
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV \
+    AR_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-ar \
+    CC_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-gcc \
+    CXX_x86_64_unknown_freebsd=x86_64-unknown-freebsd10-g++
+
+ENV HOSTS=x86_64-unknown-freebsd
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/dist-x86_64-freebsd/build-toolchain.sh

+#!/bin/bash
+# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+ARCH=$1
+BINUTILS=2.25.1
+GCC=5.3.0
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  set -x
+}
+
+mkdir binutils
+cd binutils
+
+# First up, build binutils
+curl https://ftp.gnu.org/gnu/binutils/binutils-$BINUTILS.tar.bz2 | tar xjf -
+mkdir binutils-build
+cd binutils-build
+hide_output ../binutils-$BINUTILS/configure \
+  --target=$ARCH-unknown-freebsd10
+hide_output make -j10
+hide_output make install
+cd ../..
+rm -rf binutils
+
+# Next, download the FreeBSD libc and relevant header files
+
+mkdir freebsd
+case "$ARCH" in
+    x86_64)
+        URL=ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/10.2-RELEASE/base.txz
+        ;;
+    i686)
+        URL=ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/10.2-RELEASE/base.txz
+        ;;
+esac
+curl $URL | tar xJf - -C freebsd ./usr/include ./usr/lib ./lib
+
+dst=/usr/local/$ARCH-unknown-freebsd10
+
+cp -r freebsd/usr/include $dst/
+cp freebsd/usr/lib/crt1.o $dst/lib
+cp freebsd/usr/lib/Scrt1.o $dst/lib
+cp freebsd/usr/lib/crti.o $dst/lib
+cp freebsd/usr/lib/crtn.o $dst/lib
+cp freebsd/usr/lib/libc.a $dst/lib
+cp freebsd/usr/lib/libutil.a $dst/lib
+cp freebsd/usr/lib/libutil_p.a $dst/lib
+cp freebsd/usr/lib/libm.a $dst/lib
+cp freebsd/usr/lib/librt.so.1 $dst/lib
+cp freebsd/usr/lib/libexecinfo.so.1 $dst/lib
+cp freebsd/lib/libc.so.7 $dst/lib
+cp freebsd/lib/libm.so.5 $dst/lib
+cp freebsd/lib/libutil.so.9 $dst/lib
+cp freebsd/lib/libthr.so.3 $dst/lib/libpthread.so
+
+ln -s libc.so.7 $dst/lib/libc.so
+ln -s libm.so.5 $dst/lib/libm.so
+ln -s librt.so.1 $dst/lib/librt.so
+ln -s libutil.so.9 $dst/lib/libutil.so
+ln -s libexecinfo.so.1 $dst/lib/libexecinfo.so
+rm -rf freebsd
+
+# Finally, download and build gcc to target FreeBSD
+mkdir gcc
+cd gcc
+curl https://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.bz2 | tar xjf -
+cd gcc-$GCC
+./contrib/download_prerequisites
+
+mkdir ../gcc-build
+cd ../gcc-build
+hide_output ../gcc-$GCC/configure                \
+  --enable-languages=c,c++                       \
+  --target=$ARCH-unknown-freebsd10               \
+  --disable-multilib                             \
+  --disable-nls                                  \
+  --disable-libgomp                              \
+  --disable-libquadmath                          \
+  --disable-libssp                               \
+  --disable-libvtv                               \
+  --disable-libcilkrts                           \
+  --disable-libada                               \
+  --disable-libsanitizer                         \
+  --disable-libquadmath-support                  \
+  --disable-lto
+hide_output make -j10
+hide_output make install
+cd ../..
+rm -rf gcc

src/ci/docker/dist-x86_64-linux/Dockerfile

+FROM centos:5
+
+WORKDIR /build
+
+RUN yum upgrade -y && yum install -y \
+      curl \
+      bzip2 \
+      gcc \
+      gcc-c++ \
+      make \
+      glibc-devel \
+      perl \
+      zlib-devel \
+      file \
+      xz \
+      which \
+      pkgconfig \
+      wget \
+      autoconf \
+      gettext
+
+ENV PATH=/rustroot/bin:$PATH
+ENV LD_LIBRARY_PATH=/rustroot/lib64:/rustroot/lib
+ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
+WORKDIR /tmp
+COPY shared.sh build-binutils.sh /tmp/
+
+# We need a build of openssl which supports SNI to download artifacts from
+# static.rust-lang.org. This'll be used to link into libcurl below (and used
+# later as well), so build a copy of OpenSSL with dynamic libraries into our
+# generic root.
+COPY build-openssl.sh /tmp/
+RUN ./build-openssl.sh
+
+# The `curl` binary on CentOS doesn't support SNI which is needed for fetching
+# some https urls we have, so install a new version of libcurl + curl which is
+# using the openssl we just built previously.
+#
+# Note that we also disable a bunch of optional features of curl that we don't
+# really need.
+COPY build-curl.sh /tmp/
+RUN ./build-curl.sh
+
+# binutils < 2.22 has a bug where the 32-bit executables it generates
+# immediately segfault in Rust, so we need to install our own binutils.
+#
+# See https://github.com/rust-lang/rust/issues/20440 for more info
+RUN ./build-binutils.sh
+
+# Need a newer version of gcc than centos has to compile LLVM nowadays
+COPY build-gcc.sh /tmp/
+RUN ./build-gcc.sh
+
+# CentOS 5.5 has Python 2.4 by default, but LLVM needs 2.7+
+COPY build-python.sh /tmp/
+RUN ./build-python.sh
+
+# Apparently CentOS 5.5 desn't have `git` in yum, but we're gonna need it for
+# cloning, so download and build it here.
+COPY build-git.sh /tmp/
+RUN ./build-git.sh
+
+# libssh2 (a dependency of Cargo) requires cmake 2.8.11 or higher but CentOS
+# only has 2.6.4, so build our own
+COPY build-cmake.sh /tmp/
+RUN ./build-cmake.sh
+
+# for sanitizers, we need kernel headers files newer than the ones CentOS ships
+# with so we install newer ones here
+COPY build-headers.sh /tmp/
+RUN ./build-headers.sh
+
+RUN curl -Lo /rustroot/dumb-init \
+      https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64 && \
+      chmod +x /rustroot/dumb-init
+ENTRYPOINT ["/rustroot/dumb-init", "--"]
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV HOSTS=x86_64-unknown-linux-gnu
+
+ENV RUST_CONFIGURE_ARGS \
+      --host=$HOSTS \
+      --enable-extended \
+      --enable-sanitizers
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS
+
+# This is the only builder which will create source tarballs
+ENV DIST_SRC 1
+
+# When we build cargo in this container, we don't want it to use the system
+# libcurl, instead it should compile its own.
+ENV LIBCURL_NO_PKG_CONFIG 1

src/ci/docker/dist-x86_64-linux/build-binutils.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+source shared.sh
+
+curl https://ftp.gnu.org/gnu/binutils/binutils-2.25.1.tar.bz2 | tar xfj -
+
+mkdir binutils-build
+cd binutils-build
+hide_output ../binutils-2.25.1/configure --prefix=/rustroot
+hide_output make -j10
+hide_output make install
+
+cd ..
+rm -rf binutils-build
+rm -rf binutils-2.25.1

src/ci/docker/dist-x86_64-linux/build-cmake.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+curl https://cmake.org/files/v3.6/cmake-3.6.3.tar.gz | tar xzf -
+
+mkdir cmake-build
+cd cmake-build
+hide_output ../cmake-3.6.3/configure --prefix=/rustroot
+hide_output make -j10
+hide_output make install
+
+cd ..
+rm -rf cmake-build
+rm -rf cmake-3.6.3

src/ci/docker/dist-x86_64-linux/build-curl.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+VERSION=7.51.0
+
+curl http://cool.haxx.se/download/curl-$VERSION.tar.bz2 | tar xjf -
+
+mkdir curl-build
+cd curl-build
+hide_output ../curl-$VERSION/configure \
+      --prefix=/rustroot \
+      --with-ssl=/rustroot \
+      --disable-sspi \
+      --disable-gopher \
+      --disable-smtp \
+      --disable-smb \
+      --disable-imap \
+      --disable-pop3 \
+      --disable-tftp \
+      --disable-telnet \
+      --disable-manual \
+      --disable-dict \
+      --disable-rtsp \
+      --disable-ldaps \
+      --disable-ldap
+hide_output make -j10
+hide_output make install
+
+cd ..
+rm -rf curl-build
+rm -rf curl-$VERSION
+yum erase -y curl

src/ci/docker/dist-x86_64-linux/build-gcc.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+source shared.sh
+
+GCC=4.8.5
+
+curl https://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.bz2 | tar xjf -
+cd gcc-$GCC
+./contrib/download_prerequisites
+mkdir ../gcc-build
+cd ../gcc-build
+hide_output ../gcc-$GCC/configure \
+    --prefix=/rustroot \
+    --enable-languages=c,c++
+hide_output make -j10
+hide_output make install
+ln -nsf gcc /rustroot/bin/cc
+
+cd ..
+rm -rf gcc-build
+rm -rf gcc-$GCC
+yum erase -y gcc gcc-c++ binutils

src/ci/docker/dist-x86_64-linux/build-git.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+curl https://www.kernel.org/pub/software/scm/git/git-2.10.0.tar.gz | tar xzf -
+
+cd git-2.10.0
+make configure
+hide_output ./configure --prefix=/rustroot
+hide_output make -j10
+hide_output make install
+
+cd ..
+rm -rf git-2.10.0

src/ci/docker/dist-x86_64-linux/build-headers.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+curl https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.2.84.tar.xz | unxz | tar x
+
+cd linux-3.2.84
+hide_output make mrproper
+hide_output make INSTALL_HDR_PATH=dest headers_install
+
+find dest/include \( -name .install -o -name ..install.cmd \) -delete
+yes | cp -fr dest/include/* /usr/include
+
+cd ..
+rm -rf linux-3.2.84

src/ci/docker/dist-x86_64-linux/build-openssl.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+VERSION=1.0.2j
+
+curl https://www.openssl.org/source/openssl-$VERSION.tar.gz | tar xzf -
+
+cd openssl-$VERSION
+hide_output ./config --prefix=/rustroot shared -fPIC
+hide_output make -j10
+hide_output make install
+cd ..
+rm -rf openssl-$VERSION
+
+# Make the system cert collection available to the new install.
+ln -nsf /etc/pki/tls/cert.pem /rustroot/ssl/

src/ci/docker/dist-x86_64-linux/build-python.sh

+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+source shared.sh
+
+curl https://www.python.org/ftp/python/2.7.12/Python-2.7.12.tgz | \
+  tar xzf -
+
+mkdir python-build
+cd python-build
+
+# Gotta do some hackery to tell python about our custom OpenSSL build, but other
+# than that fairly normal.
+CFLAGS='-I /rustroot/include' LDFLAGS='-L /rustroot/lib -L /rustroot/lib64' \
+    hide_output ../Python-2.7.12/configure --prefix=/rustroot
+hide_output make -j10
+hide_output make install
+
+cd ..
+rm -rf python-build
+rm -rf Python-2.7.12

src/ci/docker/dist-x86_64-linux/shared.sh

+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  set -x
+}

src/ci/docker/dist-x86_64-netbsd/Dockerfile

+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  automake \
+  bison \
+  bzip2 \
+  ca-certificates \
+  cmake \
+  curl \
+  file \
+  flex \
+  g++ \
+  gawk \
+  gdb \
+  git \
+  gperf \
+  help2man \
+  libncurses-dev \
+  libtool-bin \
+  make \
+  patch \
+  python2.7 \
+  sudo \
+  texinfo \
+  wget \
+  xz-utils \
+  libssl-dev \
+  pkg-config
+
+RUN curl -OL https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i dumb-init_*.deb && \
+    rm dumb-init_*.deb
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+# Ubuntu 16.04 (this contianer) ships with make 4, but something in the
+# toolchains we build below chokes on that, so go back to make 3
+RUN curl https://ftp.gnu.org/gnu/make/make-3.81.tar.gz | tar xzf - && \
+      cd make-3.81 && \
+      ./configure --prefix=/usr && \
+      make && \
+      make install && \
+      cd .. && \
+      rm -rf make-3.81
+
+RUN curl http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.22.0.tar.bz2 | \
+      tar xjf - && \
+      cd crosstool-ng && \
+      ./configure --prefix=/usr/local && \
+      make -j$(nproc) && \
+      make install && \
+      cd .. && \
+      rm -rf crosstool-ng
+
+RUN groupadd -r rustbuild && useradd -m -r -g rustbuild rustbuild
+RUN mkdir /x-tools && chown rustbuild:rustbuild /x-tools
+USER rustbuild
+WORKDIR /tmp
+
+COPY build-netbsd-toolchain.sh /tmp/
+RUN ./build-netbsd-toolchain.sh
+
+USER root
+
+RUN curl -o /usr/local/bin/sccache \
+      https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/2017-03-24-sccache-x86_64-unknown-linux-musl && \
+      chmod +x /usr/local/bin/sccache
+
+ENV PATH=$PATH:/x-tools/x86_64-unknown-netbsd/bin
+
+ENV \
+    AR_x86_64_unknown_netbsd=x86_64--netbsd-ar \
+    CC_x86_64_unknown_netbsd=x86_64--netbsd-gcc-sysroot \
+    CXX_x86_64_unknown_netbsd=x86_64--netbsd-g++-sysroot
+
+ENV HOSTS=x86_64-unknown-netbsd
+
+ENV RUST_CONFIGURE_ARGS --host=$HOSTS --enable-extended
+ENV SCRIPT python2.7 ../x.py dist --host $HOSTS --target $HOSTS