Update and simplify Travis CI

.travis.yml

@@ -1,110 +1,38 @@
+language: rust
 sudo: false
 
-language: generic
+cache: cargo
 
-env:
+rust:
-  global:
+  - stable
-    - PROJECT_NAME=mdBook
+  - beta
+  - nightly
 
-matrix:
+os:
-  include:
+  - linux
-    # Stable channel
+  - osx
-    - os: osx
-      env: TARGET=i686-apple-darwin CHANNEL=stable
-    - os: linux
-      env: TARGET=i686-unknown-linux-gnu CHANNEL=stable
-      addons:
-        apt:
-          packages: &i686_unknown_linux_gnu
-            - gcc-multilib
-    - os: osx
-      env: TARGET=x86_64-apple-darwin CHANNEL=stable
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-gnu CHANNEL=stable
-      addons:
-        apt:
-          packages:
-            - nodejs
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-musl CHANNEL=stable
-      dist: trusty
-      addons:
-        apt:
-          packages: &musl_packages
-            - musl
-            - musl-dev
-            - musl-tools
-    # Beta channel
-    - os: osx
-      env: TARGET=i686-apple-darwin CHANNEL=beta
-    - os: linux
-      env: TARGET=i686-unknown-linux-gnu CHANNEL=beta
-      addons:
-        apt:
-          packages: *i686_unknown_linux_gnu
-    - os: osx
-      env: TARGET=x86_64-apple-darwin CHANNEL=beta
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-gnu CHANNEL=beta
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-musl CHANNEL=beta
-      dist: trusty
-      addons:
-        apt:
-          packages: &musl_packages
-            - musl
-            - musl-dev
-            - musl-tools
-    # Nightly channel
-    - os: osx
-      env: TARGET=i686-apple-darwin CHANNEL=nightly
-    - os: linux
-      env: TARGET=i686-unknown-linux-gnu CHANNEL=nightly
-      addons:
-        apt:
-          packages: *i686_unknown_linux_gnu
-    - os: osx
-      env: TARGET=x86_64-apple-darwin CHANNEL=nightly
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-gnu CHANNEL=nightly
-    - os: linux
-      env: TARGET=x86_64-unknown-linux-musl CHANNEL=nightly
-      dist: trusty
-      addons:
-        apt:
-          packages: &musl_packages
-            - musl
-            - musl-dev
-            - musl-tools
-
-install:
-  - export PATH="$PATH:$HOME/.cargo/bin"
-  - bash ci/install.sh
-
-script:
-  - bash ci/script.sh
 
 after_success:
+  # Deploy the docs if the commit is on master
   - test "$TRAVIS_PULL_REQUEST" == "false" &&
     test "$TRAVIS_BRANCH" == "master" &&
-    test "$TARGET" == "x86_64-unknown-linux-gnu" &&
+    "$TRAVIS_RUST_VERSION" == "stable"
-    test "$CHANNEL" = "stable" &&
     npm install stylus nib &&
-    bash deploy.sh
+    bash ci/deploy.sh
 
 before_deploy:
+  # Script to create packages from the build artefacts to upload to GitHub
   - bash ci/before_deploy.sh
 
 deploy:
   provider: releases
   api_key:
     secure: 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
-  file: ${PROJECT_NAME}-${TRAVIS_TAG}-${TARGET}.tar.gz
+  file: ${PROJECT_NAME}-${TRAVIS_TAG}-${TRAVIS_OS_NAME}.tar.gz
   # don't delete the artifacts from previous phases
   skip_cleanup: true
-  # deploy when a new tag is pushed
   on:
-    condition: $CHANNEL = stable
+    condition: $TRAVIS_RUST_VERSION = stable
     tags: true
 
 notifications:

ci/before_deploy.sh

@@ -18,7 +18,7 @@ mk_tarball() {
 
   pushd $td
 
-  tar czf $out_dir/${PROJECT_NAME}-${TRAVIS_TAG}-${TARGET}.tar.gz *
+  tar czf $out_dir/${PROJECT_NAME}-${TRAVIS_TAG}-${TRAVIS_OS_NAME}.tar.gz *
 
   popd $td
   rm -r $td

ci/install.sh

@@ -1,59 +0,0 @@
-# `install` phase: install stuff needed for the `script` phase
-
-set -ex
-
-case "$TRAVIS_OS_NAME" in
-  linux)
-    host=x86_64-unknown-linux-gnu
-    ;;
-  osx)
-    host=x86_64-apple-darwin
-    ;;
-esac
-
-mktempd() {
-  echo $(mktemp -d 2>/dev/null || mktemp -d -t tmp)
-}
-
-install_rustup() {
-  local td=$(mktempd)
-
-  pushd $td
-  curl -O https://static.rust-lang.org/rustup/dist/$host/rustup-setup
-  chmod +x rustup-setup
-  ./rustup-setup -y
-  popd
-
-  rm -r $td
-  rustup self update
-  rustup install "$CHANNEL"
-  rustup default "$CHANNEL"
-  rustc -V
-  cargo -V
-}
-
-install_standard_crates() {
-  if [ "$host" != "$TARGET" ]; then
-    if [ ! "$CHANNEL" = "stable" ]; then
-      rustup target add $TARGET
-    else
-      local version=$(rustc -V | cut -d' ' -f2)
-      local tarball=rust-std-${version}-${TARGET}
-
-      local td=$(mktempd)
-      curl -s https://static.rust-lang.org/dist/${tarball}.tar.gz | \
-        tar --strip-components 1 -C $td -xz
-
-      $td/install.sh --prefix=$(rustc --print sysroot)
-
-      rm -r $td
-    fi
-  fi
-}
-
-main() {
-  install_rustup
-  install_standard_crates
-}
-
-main

ci/script.sh

@@ -1,45 +0,0 @@
-# `script` phase: you usually build, test and generate docs in this phase
-
-set -ex
-
-# NOTE Workaround for rust-lang/rust#31907 - disable doc tests when cross compiling
-# This has been fixed in the nightly channel but it would take a while to reach the other channels
-disable_cross_doctests() {
-  local host
-  case "$TRAVIS_OS_NAME" in
-    linux)
-      host=x86_64-unknown-linux-gnu
-      ;;
-    osx)
-      host=x86_64-apple-darwin
-      ;;
-  esac
-
-  if [ "$host" != "$TARGET" ] && [ "$CHANNEL" != "nightly" ]; then
-    if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-      brew install gnu-sed --default-names
-    fi
-
-    find src -name '*.rs' -type f | xargs sed -i -e 's:\(//.\s*```\):\1 ignore,:g'
-  fi
-}
-
-run_test_suite() {
-  # Extra test without default features to avoid bitrot. We only test on a single target (but with
-  # all the channels) to avoid significantly increasing the build times
-  if [ $TARGET = x86_64-unknown-linux-gnu ]; then
-    cargo build --target $TARGET --no-default-features --verbose
-    cargo test --target $TARGET --no-default-features --verbose
-    cargo clean
-  fi
-
-  cargo build --target $TARGET --verbose
-  cargo test --target $TARGET --verbose
-}
-
-main() {
-  disable_cross_doctests
-  run_test_suite
-}
-
-main