Move warnings check on the CI

Always building with `deny(warnings)` leads to messups such as
https://docs.rs/crate/bindgen/0.52.0/builds/199624

4 files changed, 7 insertions, 2 deletions

diff --git a/ci/assert-warnings.sh b/ci/assert-warnings.sh
new file mode 100755
index 00000000..62c12c42
--- /dev/null
+++ b/ci/assert-warnings.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+set -xeu
+cd "$(dirname "$0")/.."
+
+cargo rustc --lib --features "$BINDGEN_FEATURES" -- -Dwarnings
diff --git a/ci/script.sh b/ci/script.sh
index b3a0675a..83f2a69e 100755
--- a/ci/script.sh
+++ b/ci/script.sh
@@ -38,6 +38,7 @@ case "$BINDGEN_JOB" in
 
     "misc")
         ./ci/assert-docs.sh
+        ./ci/assert-warnings.sh
         ./ci/test-book.sh
         ./ci/no-includes.sh
         ./ci/assert-rustfmt.sh
diff --git a/src/features.rs b/src/features.rs
index 94ae645f..c130dd6f 100644
--- a/src/features.rs
+++ b/src/features.rs
@@ -1,7 +1,6 @@
 //! Contains code for selecting features
 
 #![deny(missing_docs)]
-#![deny(warnings)]
 #![deny(unused_extern_crates)]
 
 use std::io;
diff --git a/src/lib.rs b/src/lib.rs
index 8c8dd198..e7ed376f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,6 @@
 //! See the [Users Guide](https://rust-lang.github.io/rust-bindgen/) for
 //! additional documentation.
 #![deny(missing_docs)]
-#![deny(warnings)]
 #![deny(unused_extern_crates)]
 // To avoid rather annoying warnings when matching with CXCursor_xxx as a
 // constant.