diff --git a/playback/src/audio_backend/gstreamer.rs b/playback/src/audio_backend/gstreamer.rs
index ae598d0b..c3e130fd 100644
--- a/playback/src/audio_backend/gstreamer.rs
+++ b/playback/src/audio_backend/gstreamer.rs
@@ -1,14 +1,14 @@
 use super::{Open, Sink};
-use std::{io, thread};
-use std::sync::mpsc::{sync_channel, SyncSender};
 use gst::prelude::*;
 use gst::*;
+use std::sync::mpsc::{sync_channel, SyncSender};
+use std::{io, thread};
 use zerocopy::*;
 
 #[allow(dead_code)]
 pub struct GstreamerSink {
     tx: SyncSender<Vec<u8>>,
-    pipeline: gst::Pipeline
+    pipeline: gst::Pipeline,
 }
 
 impl Open for GstreamerSink {
@@ -16,25 +16,35 @@ impl Open for GstreamerSink {
         gst::init().expect("Failed to init gstreamer!");
         let pipeline_str_preamble = r#"appsrc caps="audio/x-raw,format=S16LE,layout=interleaved,channels=2,rate=44100" block=true max-bytes=4096 name=appsrc0 "#;
         let pipeline_str_rest = r#" ! audioconvert ! autoaudiosink"#;
-        let pipeline_str : String = match device {
+        let pipeline_str: String = match device {
             Some(x) => format!("{}{}", pipeline_str_preamble, x),
-            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest)
+            None => format!("{}{}", pipeline_str_preamble, pipeline_str_rest),
         };
         println!("Pipeline: {}", pipeline_str);
 
         gst::init().unwrap();
         let pipelinee = gst::parse_launch(&*pipeline_str).expect("New Pipeline error");
-        let pipeline = pipelinee.dynamic_cast::<gst::Pipeline>().expect("Couldn't cast pipeline element at runtime!");
+        let pipeline = pipelinee
+            .dynamic_cast::<gst::Pipeline>()
+            .expect("Couldn't cast pipeline element at runtime!");
         let bus = pipeline.get_bus().expect("Couldn't get bus from pipeline");
         let mainloop = glib::MainLoop::new(None, false);
-        let appsrce : gst::Element = pipeline.get_by_name("appsrc0").expect("Couldn't get appsrc from pipeline");
-        let appsrc : gst_app::AppSrc = appsrce.dynamic_cast::<gst_app::AppSrc>().expect("Couldn't cast AppSrc element at runtime!");
+        let appsrce: gst::Element = pipeline
+            .get_by_name("appsrc0")
+            .expect("Couldn't get appsrc from pipeline");
+        let appsrc: gst_app::AppSrc = appsrce
+            .dynamic_cast::<gst_app::AppSrc>()
+            .expect("Couldn't cast AppSrc element at runtime!");
         let bufferpool = gst::BufferPool::new();
         let appsrc_caps = appsrc.get_caps().expect("get appsrc caps failed");
         let mut conf = bufferpool.get_config();
         conf.set_params(Some(&appsrc_caps), 8192, 0, 0);
-        bufferpool.set_config(conf).expect("Couldn't configure the buffer pool");
-        bufferpool.set_active(true).expect("Couldn't activate buffer pool");
+        bufferpool
+            .set_config(conf)
+            .expect("Couldn't configure the buffer pool");
+        bufferpool
+            .set_active(true)
+            .expect("Couldn't activate buffer pool");
 
         let (tx, rx) = sync_channel::<Vec<u8>>(128);
         thread::spawn(move || {
@@ -44,7 +54,9 @@ impl Open for GstreamerSink {
                     let mut okbuffer = buffer.unwrap();
                     let mutbuf = okbuffer.make_mut();
                     mutbuf.set_size(data.len());
-                    mutbuf.copy_from_slice(0, data.as_bytes()).expect("Failed to copy from slice");
+                    mutbuf
+                        .copy_from_slice(0, data.as_bytes())
+                        .expect("Failed to copy from slice");
                     let _eat = appsrc.push_buffer(okbuffer);
                 }
             }
@@ -67,18 +79,20 @@ impl Open for GstreamerSink {
                     }
                     _ => (),
                 };
-        
+
                 glib::Continue(true)
             })
             .expect("Failed to add bus watch");
             thread_mainloop.run();
         });
 
-        pipeline.set_state(gst::State::Playing).expect("Unable to set the pipeline to the `Playing` state");
+        pipeline
+            .set_state(gst::State::Playing)
+            .expect("Unable to set the pipeline to the `Playing` state");
 
         GstreamerSink {
             tx: tx,
-            pipeline: pipeline
+            pipeline: pipeline,
         }
     }
 }
@@ -92,8 +106,10 @@ impl Sink for GstreamerSink {
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {
         // Copy expensively (in to_vec()) to avoid thread synchronization
-        let deighta : &[u8] = data.as_bytes();
-        self.tx.send(deighta.to_vec()).expect("tx send failed in write function");
+        let deighta: &[u8] = data.as_bytes();
+        self.tx
+            .send(deighta.to_vec())
+            .expect("tx send failed in write function");
         Ok(())
     }
-}
\ No newline at end of file
+}
diff --git a/playback/src/lib.rs b/playback/src/lib.rs
index 84441a8d..e2a2ac83 100644
--- a/playback/src/lib.rs
+++ b/playback/src/lib.rs
@@ -17,13 +17,13 @@ extern crate libpulse_sys;
 #[cfg(feature = "jackaudio-backend")]
 extern crate jack;
 
+#[cfg(feature = "gstreamer-backend")]
+extern crate glib;
 #[cfg(feature = "gstreamer-backend")]
 extern crate gstreamer as gst;
 #[cfg(feature = "gstreamer-backend")]
 extern crate gstreamer_app as gst_app;
 #[cfg(feature = "gstreamer-backend")]
-extern crate glib;
-#[cfg(feature = "gstreamer-backend")]
 extern crate zerocopy;
 
 #[cfg(feature = "sdl-backend")]