Upgrade to Rust 2018

This resolves a lot of NLL issues, however full NLL will be necessary to
handle a couple of remaining issues.

1 files changed, 4 insertions, 6 deletions

diff --git a/build.rs b/build.rs
index 22799c95..4036dad2 100644
--- a/build.rs
+++ b/build.rs
@@ -12,15 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 #[cfg(windows)]
-extern crate embed_resource;
+use embed_resource;
 #[cfg(windows)]
-extern crate tempfile;
+use tempfile;
 #[cfg(windows)]
-extern crate reqwest;
+use reqwest;
 #[cfg(windows)]
-extern crate zip;
-
-extern crate gl_generator;
+use zip;
 
 use gl_generator::{Api, Fallbacks, GlobalGenerator, Profile, Registry};