Check for trailing new lines in testing script.

CHANGELOG.md

@@ -1613,4 +1613,3 @@ the Rocket APIs. They are summarized through the following API changes:
 ## Testing
 
   * Add a significant number of codegen tests.
-

benchmarks/src/routing.rs

@@ -126,4 +126,3 @@ pub fn bench_bitwarden_routes(c: &mut Criterion) {
         }
     }));
 }
-

contrib/sync_db_pools/lib/src/poolable.rs

@@ -246,4 +246,3 @@ impl Poolable for memcache::Client {
         Ok(r2d2::Pool::builder().max_size(config.pool_size).build(manager)?)
     }
 }
-

core/lib/src/catcher/catcher.rs

@@ -414,4 +414,3 @@ default_handler_fn! {
     510, "Not Extended", "Further extensions to the request are required for \
         the server to fulfill it."
 }
-

core/lib/src/form/name/key.rs

@@ -144,4 +144,3 @@ impl std::fmt::Display for Key {
         self.0.fmt(f)
     }
 }
-

core/lib/src/form/name/name.rs

@@ -235,4 +235,3 @@ impl std::fmt::Debug for Name {
         self.0.fmt(f)
     }
 }
-

scripts/test.sh

@@ -56,6 +56,14 @@ function check_style() {
     echo "${matches}"
     exit 1
   fi
+
+  local pattern='tail -n 1 % | grep -q "^$" && echo %'
+  local matches=$(git grep -z -Il '' | xargs -0 -P 16 -I % sh -c "${pattern}")
+  if ! [ -z "${matches}" ]; then
+    echo "Trailing new line(s) found in the following:"
+    echo "${matches}"
+    exit 1
+  fi
 }
 
 function indir() {