Force cleanup prior to compiletests

Author: fuine

.travis.yml

@@ -15,8 +15,10 @@ script:
   travis-cargo --only nightly build -- --features spin_no_std &&
   travis-cargo --only nightly test -- --features spin_no_std &&
   travis-cargo --only nightly bench -- --features spin_no_std &&
+  travis-cargo --only nightly clean &&
   travis-cargo --only nightly build -- --features compiletest &&
   travis-cargo --only nightly test -- --features compiletest &&
+  travis-cargo --only nightly clean &&
   travis-cargo --only stable doc
 after_success:
 - travis-cargo --only stable doc-upload

appveyor.yml

@@ -52,5 +52,6 @@ build: false
 test_script:
   - cargo build --verbose --target %TARGET%
   - cargo test --target %TARGET%
+  - if "%CHANNEL%" == "nightly" cargo clean
   - if "%CHANNEL%" == "nightly" cargo build --verbose --target %TARGET% --features "compiletest"
   - if "%CHANNEL%" == "nightly" cargo test --target %TARGET% --features "compiletest"