travis: build benchmarks as well

Author: matthiaskrgr

.travis.yml

@@ -35,7 +35,7 @@ script:
 - set -e
 - |
   # Test and install plain miri
-  cargo build --release --all-features &&
+  cargo build --release --all-features --all-targets &&
   cargo test --release --all-features &&
   cargo install --all-features --force --path .
 - |

appveyor.yml

@@ -37,7 +37,7 @@ build: false
 test_script:
     - set RUSTFLAGS=-g
     - set RUST_BACKTRACE=1
-    - cargo build --release
+    - cargo build --release --all-targets --all-features
     - cargo test --release
     - set MIRI_SYSROOT=%USERPROFILE%\.xargo\HOST
     - cargo test --release