Run cargo fmt

src/video/ffmpeg.rs

@@ -1,6 +1,6 @@
 use futures::TryFutureExt;
 use log::{debug, error, info, warn};
-use std::io::{Result};
+use std::io::Result;
 use std::process::{Output, Stdio};
 use std::time::Instant;
 use tokio::process::Command;
@@ -182,4 +182,4 @@ impl Ffmpeg {
 
         Ok(output.status.code().unwrap_or(-1))
     }
-}
+}