Merge pull request #98 from rhysd/fix-ci

Fix nighly and beta CI

.appveyor.yml

@@ -94,8 +94,8 @@ environment:
 # or test failure in the matching channels/targets from failing the entire build.
 matrix:
   allow_failures:
-    - channel: beta
     - channel: nightly
+    - channel: beta
 
 # If you only care about stable channel build failures, uncomment the following line:
     #- channel: beta
@@ -128,4 +128,3 @@ build: false
 # environment variable.
 test_script:
   - cargo test --verbose %cargoflags%
-  - cargo fmt --all -- --check

.travis.yml

@@ -18,10 +18,12 @@ before_script:
 script:
   - cargo build --all --locked --verbose
   - cargo test --all --locked --verbose
-  - cargo fmt --all -- --check
+  - |
+    if [[ "$TRAVIS_RUST_VERSION" == "stable" ]]; then
+      cargo fmt --all -- --check
+    fi
 
 jobs:
   allow_failures:
-    - rust: beta
     - rust: nightly
   fast_finish: true