Deny warnings on CI

Author: gnzlbg

ci/run.sh

@@ -7,6 +7,7 @@ set -ex
 FEATURES="rayon,serde"
 if [ "${TRAVIS_RUST_VERSION}" = "nightly" ]; then
     FEATURES="${FEATURES},nightly"
+    export RUSTFLAGS="$RUSTFLAGS --cfg hashbrown_deny_warnings"
 fi
 
 CARGO=cargo
@@ -18,6 +19,8 @@ if [ "${CROSS}" = "1" ]; then
     CARGO=cross
 fi
 
+export RUSTFLAGS="$RUSTFLAGS --cfg hashbrown_deny_warnings"
+
 "${CARGO}" -vv test --target="${TARGET}"
 "${CARGO}" -vv test --target="${TARGET}" --features "${FEATURES}"
 

src/lib.rs

@@ -23,13 +23,16 @@
     )
 )]
 #![warn(missing_docs)]
+#![cfg_attr(hashbrown_deny_warnings, deny(warnings))]
 
 #[cfg(test)]
 #[macro_use]
+#[allow(unused_imports)]
 extern crate std;
 #[cfg(test)]
 extern crate rand;
 
+
 #[cfg(feature = "nightly")]
 #[cfg_attr(test, macro_use)]
 extern crate alloc;