Be less verbose with ASAN builds

.travis.yml

@@ -6,10 +6,6 @@ rust:
   - beta
   - nightly
 
-# matrix:
-#   allow_failures:
-#     - rust: nightly
-
 addons:
   apt:
     packages:
@@ -23,15 +19,12 @@ before_install:
   - cargo install rustfmt || true
 
 script:
+- |
+  if [ "$TRAVIS_RUST_VERSION" == "nightly" ] ; then
+    export ASAN_OPTIONS="detect_odr_violation=1:leak_check_at_exit=0:detect_leaks=0"
+    export RUSTFLAGS="-Z sanitizer=address"
+  fi
 - |
   cargo fmt -- --write-mode=diff &&
   cargo build &&
   cargo test
-- |
-  if [ "$TRAVIS_RUST_VERSION" == "nightly" ] ; then
-    export LSAN_OPTIONS=verbosity=1:log_threads=1
-    export ASAN_OPTIONS="detect_odr_violation=1:leak_check_at_exit=0:detect_leaks=0"
-    export RUST_BACKTRACE=full
-    export RUSTFLAGS="-Z sanitizer=address"
-    rustup run nightly cargo test
-  fi