ci: temporarily disable rustfmt checks since it's broken for nightly

Author: matthiaskrgr

.travis.yml

@@ -22,7 +22,7 @@ env:
 install:
   - |
     if [ -z ${INTEGRATION} ]; then
-      rustup component add rustfmt || cargo install --git https://github.com/rust-lang/rustfmt/ --force
+#      rustup component add rustfmt || cargo install --git https://github.com/rust-lang/rustfmt/ --force
       if [ "$TRAVIS_OS_NAME" == "linux" ]; then
         . $HOME/.nvm/nvm.sh
         nvm install stable

appveyor.yml

@@ -22,7 +22,7 @@ install:
     - del rust-toolchain
     - cargo install rustup-toolchain-install-master --debug || echo "rustup-toolchain-install-master already installed"
     - rustup-toolchain-install-master %RUSTC_HASH% -f -n master
-    - rustup component add rustfmt --toolchain nightly
+    #- rustup component add rustfmt --toolchain nightly
     - rustup default master
     - set PATH=%PATH%;C:\Users\appveyor\.rustup\toolchains\master\bin
     - rustc -V