diff --git a/examples/blitting.rs b/examples/blitting.rs
index 8e958aed039..383a8be69e2 100644
--- a/examples/blitting.rs
+++ b/examples/blitting.rs
@@ -5,6 +5,7 @@ extern crate glium;
 extern crate image;
 
 use std::io::Cursor;
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/deferred.rs b/examples/deferred.rs
index 1906e40b9c2..df5a2a95b62 100644
--- a/examples/deferred.rs
+++ b/examples/deferred.rs
@@ -4,6 +4,7 @@ extern crate cgmath;
 extern crate image;
 
 use glium::index::PrimitiveType;
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use std::io::Cursor;
 
diff --git a/examples/displacement_mapping.rs b/examples/displacement_mapping.rs
index 5df5337afed..8aba74dfca4 100644
--- a/examples/displacement_mapping.rs
+++ b/examples/displacement_mapping.rs
@@ -3,6 +3,7 @@ extern crate image;
 extern crate glium;
 
 use std::io::Cursor;
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/fullscreen.rs b/examples/fullscreen.rs
index de12a53207c..ae5e2a64f77 100644
--- a/examples/fullscreen.rs
+++ b/examples/fullscreen.rs
@@ -7,6 +7,7 @@ use std::io::Cursor;
 
 use glium::Surface;
 use glium::index::PrimitiveType;
+#[allow(unused_imports)]
 use glium::glutin::{self, ElementState, VirtualKeyCode, Event, WindowEvent};
 
 mod support;
diff --git a/examples/fxaa.rs b/examples/fxaa.rs
index 47c1fae1913..242b21b44ea 100644
--- a/examples/fxaa.rs
+++ b/examples/fxaa.rs
@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate glium;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/gpgpu.rs b/examples/gpgpu.rs
index 3a770e78b67..26dc572e01d 100644
--- a/examples/gpgpu.rs
+++ b/examples/gpgpu.rs
@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate glium;
 extern crate rand;
+#[allow(unused_imports)]
 use glium::glutin;
 use glutin::dpi::PhysicalSize;
 
diff --git a/examples/image.rs b/examples/image.rs
index c1ff04221f4..31260a46691 100644
--- a/examples/image.rs
+++ b/examples/image.rs
@@ -4,6 +4,7 @@ extern crate image;
 
 use std::io::Cursor;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
diff --git a/examples/info.rs b/examples/info.rs
index 413a5aa8b1e..494216e383e 100644
--- a/examples/info.rs
+++ b/examples/info.rs
@@ -1,6 +1,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Api, Profile, Version};
 
     // building the display, ie. the main object
diff --git a/examples/instancing.rs b/examples/instancing.rs
index 0adb7a06d6a..5156ac153ea 100644
--- a/examples/instancing.rs
+++ b/examples/instancing.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 extern crate rand;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/manual-creation.rs b/examples/manual-creation.rs
index 6096eca056f..cdbc39b4256 100644
--- a/examples/manual-creation.rs
+++ b/examples/manual-creation.rs
@@ -19,6 +19,7 @@ There are three concepts in play:
 extern crate glium;
 
 use glium::Surface;
+#[allow(unused_imports)]
 use glium::glutin::{self, ContextTrait};
 
 use std::rc::Rc;
diff --git a/examples/picking.rs b/examples/picking.rs
index 333a816b8ee..2951c05def7 100644
--- a/examples/picking.rs
+++ b/examples/picking.rs
@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate glium;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/screenshot-asynchronous.rs b/examples/screenshot-asynchronous.rs
index 6851dea965e..c513b491999 100644
--- a/examples/screenshot-asynchronous.rs
+++ b/examples/screenshot-asynchronous.rs
@@ -4,6 +4,7 @@ extern crate image;
 
 use std::thread;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
diff --git a/examples/screenshot.rs b/examples/screenshot.rs
index fa22e62cc59..0e96b5cd901 100644
--- a/examples/screenshot.rs
+++ b/examples/screenshot.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 extern crate image;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
@@ -112,7 +113,7 @@ fn main() {
     target.finish().unwrap();
 
     // reading the front buffer into an image
-    let image: glium::texture::RawImage2d<u8> = display.read_front_buffer();
+    let image: glium::texture::RawImage2d<u8> = display.read_front_buffer().unwrap();
     let image = image::ImageBuffer::from_raw(image.width, image.height, image.data.into_owned()).unwrap();
     let image = image::DynamicImage::ImageRgba8(image).flipv();
     image.save("glium-example-screenshot.png").unwrap();
diff --git a/examples/shadow_mapping.rs b/examples/shadow_mapping.rs
index 68d403fac1d..b039bad53f1 100644
--- a/examples/shadow_mapping.rs
+++ b/examples/shadow_mapping.rs
@@ -3,6 +3,7 @@ extern crate glium;
 extern crate cgmath;
 
 use cgmath::SquareMatrix;
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use std::time::Instant;
 use glutin::dpi::LogicalSize;
diff --git a/examples/sprites-batching.rs b/examples/sprites-batching.rs
index 422d82a99a2..d70e2768426 100644
--- a/examples/sprites-batching.rs
+++ b/examples/sprites-batching.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 extern crate rand;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
diff --git a/examples/subroutines.rs b/examples/subroutines.rs
index 4e94062c2e3..fa648fd437f 100644
--- a/examples/subroutines.rs
+++ b/examples/subroutines.rs
@@ -3,6 +3,7 @@ extern crate glium;
 
 mod support;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 use glium::program::ShaderStage;
diff --git a/examples/teapot.rs b/examples/teapot.rs
index ce2e41302c6..8c2fad72a9c 100644
--- a/examples/teapot.rs
+++ b/examples/teapot.rs
@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate glium;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 
 mod support;
diff --git a/examples/tessellation.rs b/examples/tessellation.rs
index 67332223db0..8b7dd415871 100644
--- a/examples/tessellation.rs
+++ b/examples/tessellation.rs
@@ -1,6 +1,7 @@
 #[macro_use]
 extern crate glium;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
diff --git a/examples/triangle.rs b/examples/triangle.rs
index 4fae24753d8..a05acac9540 100644
--- a/examples/triangle.rs
+++ b/examples/triangle.rs
@@ -3,6 +3,7 @@ extern crate glium;
 
 mod support;
 
+#[allow(unused_imports)]
 use glium::{glutin, Surface};
 use glium::index::PrimitiveType;
 
diff --git a/examples/tutorial-01.rs b/examples/tutorial-01.rs
index 7884fc50c7f..dfd3fd45a8d 100644
--- a/examples/tutorial-01.rs
+++ b/examples/tutorial-01.rs
@@ -1,6 +1,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-02.rs b/examples/tutorial-02.rs
index df16165981e..a288e5c9c09 100644
--- a/examples/tutorial-02.rs
+++ b/examples/tutorial-02.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-03.rs b/examples/tutorial-03.rs
index 4f4407f9541..ffd168d126e 100644
--- a/examples/tutorial-03.rs
+++ b/examples/tutorial-03.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-04.rs b/examples/tutorial-04.rs
index 91f39f6bed1..080b4097a5d 100644
--- a/examples/tutorial-04.rs
+++ b/examples/tutorial-04.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-05.rs b/examples/tutorial-05.rs
index c821b39f316..ff3ad6590f0 100644
--- a/examples/tutorial-05.rs
+++ b/examples/tutorial-05.rs
@@ -2,6 +2,7 @@
 extern crate glium;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-06.rs b/examples/tutorial-06.rs
index 3c98ee76710..a5a52f6962b 100644
--- a/examples/tutorial-06.rs
+++ b/examples/tutorial-06.rs
@@ -5,6 +5,7 @@ extern crate image;
 use std::io::Cursor;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-07.rs b/examples/tutorial-07.rs
index 65124a5059e..72e2a47b36a 100644
--- a/examples/tutorial-07.rs
+++ b/examples/tutorial-07.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-08.rs b/examples/tutorial-08.rs
index 78933245802..9d8ee9e72dd 100644
--- a/examples/tutorial-08.rs
+++ b/examples/tutorial-08.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-09.rs b/examples/tutorial-09.rs
index dd6406bcfc3..496390abae8 100644
--- a/examples/tutorial-09.rs
+++ b/examples/tutorial-09.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-10.rs b/examples/tutorial-10.rs
index 49556af6b5c..6648c227b9d 100644
--- a/examples/tutorial-10.rs
+++ b/examples/tutorial-10.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-12.rs b/examples/tutorial-12.rs
index 6699f7a0184..8d8ca030d31 100644
--- a/examples/tutorial-12.rs
+++ b/examples/tutorial-12.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-13.rs b/examples/tutorial-13.rs
index 826d4cb3dff..41edef394c9 100644
--- a/examples/tutorial-13.rs
+++ b/examples/tutorial-13.rs
@@ -5,6 +5,7 @@ extern crate glium;
 mod teapot;
 
 fn main() {
+    #![allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();
diff --git a/examples/tutorial-14.rs b/examples/tutorial-14.rs
index bd40dac0e81..cd376f5b280 100644
--- a/examples/tutorial-14.rs
+++ b/examples/tutorial-14.rs
@@ -5,6 +5,7 @@ extern crate image;
 use std::io::Cursor;
 
 fn main() {
+    #[allow(unused_imports)]
     use glium::{glutin, Surface};
 
     let mut events_loop = glutin::EventsLoop::new();