[ci] Split jobs into stages for more efficient builds

Successful builds will take longer but do slightly less work (faster
once Windows build improvements land — on Travis' side and on Rustup's
side), and important failing builds will take less time on average
(initial smoke test on linux only, then tests on stable win/mac, then
checks on minver, nightlies). No clippy job at all any more.

Most importantly, less concurrent jobs are run — the limit isn't
consumed entirely by a single build; builds fail earlier; stages are
named clearly to communicate what's happening and what's not working.

.travis.yml

@@ -10,64 +10,61 @@ before_cache:
   # Travis can't cache files that are not readable by "others"
   - chmod -R a+r $HOME/.cargo
 
-matrix:
-  fast_finish: true
-  include:
+stages:
+  - smoke (check, audit, test)
+  - test stables
+  - check minimum version
+  - check nightlies
 
-    # Audit only
-    - env: CARGO_AUDIT=1
+jobs:
+  include:
+    - stage: smoke (check, audit, test)
+      env: CARGO_SMOKE=1
+      os: linux
 
-    # Stable on windows first to get it going (very slow)
-    - os: windows
+    - stage: test stables
+      env: CARGO_TEST=1
+      os: windows
+    - env: CARGO_TEST=1
+      os: osx
 
-    # Linux
-    - os: linux
-      rust: nightly
-    - os: linux
+    - stage: check minimum version
       rust: 1.26.1
-    - os: linux
+      os: linux
+    - rust: 1.26.1
+      os: windows
+    - rust: 1.26.1
+      os: osx
 
-    # macOS
-    - os: osx
+    - stage: check nightlies
       rust: nightly
-    - os: osx
-      rust: 1.26.1
-    - os: osx
-
-    # Other windowses later
-    - os: windows
-      rust: nightly
-    - os: windows
-      rust: 1.26.1
-
-    # Clippy only
-    - env: CARGO_CLIPPY=1
-
-  allow_failures:
-    - env: CARGO_CLIPPY=1
+      os: linux
+    - rust: nightly
+      os: windows
+    - rust: nightly
+      os: osx
 
 before_install:
   - set -e
   - |
     if [ $TRAVIS_OS_NAME = windows ]; then
       choco install windows-sdk-10.0
     fi
-    if [[ ! -z "$CARGO_AUDIT" ]]; then
+    if [[ ! -z "$CARGO_SMOKE" ]]; then
       which cargo-audit || cargo install --debug cargo-audit
-    elif [[ ! -z "$CARGO_CLIPPY" ]]; then
-      rustup component add clippy
     fi
 # --debug for faster build at the minimal expense of runtime speed
 
 script:
   - |
-    if [[ ! -z "$CARGO_AUDIT" ]]; then
+    if [[ ! -z "$CARGO_SMOKE" ]]; then
       cargo check
       cargo audit
-    elif [[ ! -z "$CARGO_CLIPPY" ]]; then
-      cargo clippy
-    else
       cargo test
+    elif [[ ! -z "$CARGO_TEST" ]]; then
+      cargo test
+    else
+      cargo check
     fi
 
 after_script: set +e

Cargo.toml

@@ -3,10 +3,6 @@ name = "notify"
 version = "4.0.10"
 authors = [
   "Félix Saparelli <me@passcod.name>",
-  "Jorge Israel Peña <jorge.israel.p@gmail.com>",
-  "Michael Maurizi <michael.maurizi@gmail.com>",
-  "Pierre Baillet <oct@zoy.org>",
-  "Joe Wilm <joe@jwilm.com>",
   "Daniel Faust <hessijames@gmail.com>"
 ]
 description = "Cross-platform filesystem notification library"