[ci] fail on fmt, clippy

Author: gnzlbg

.travis.yml

@@ -25,9 +25,6 @@ matrix:
       script: |
         cargo install clippy
         cargo clippy --all -- -D clippy-pedantic
-  allow_failures:
-    - env: RUSTFMT=On TARGET=x86_64-unknown-linux-gnu NO_ADD=1
-    - env: CLIPPY=On TARGET=x86_64-unknown-linux-gnu NO_ADD=1
 install:
   - if [ "$NO_ADD" == "" ]; then rustup target add $TARGET; fi