Upgrade env_logger

0.4 depends on log 0.3 and so misses out on module names.

Author: sfackler

Cargo.toml

@@ -23,7 +23,7 @@ crossbeam = "0.3"
 crypto-hash = "0.3"
 curl = "0.4.6"
 docopt = "0.8.1"
-env_logger = "0.4"
+env_logger = "0.5"
 failure = "0.1.1"
 filetime = "0.1"
 flate2 = "1.0"

src/bin/cargo.rs

@@ -75,7 +75,7 @@ See 'cargo help <command>' for more information on a specific command.
 ";
 
 fn main() {
-    env_logger::init().unwrap();
+    env_logger::init();
 
     let mut config = match Config::default() {
         Ok(cfg) => cfg,