don't check for an exact error message

Oliver Schneider · Oliver Schneider · commit 86e4216a5682 · 2016-05-13T13:45:25.000+02:00
the system might change it, especially if the system language is changed
diff --git a/tests/compile-fail/conf_non_existant.rs b/tests/compile-fail/conf_non_existant.rs
@@ -1,4 +1,4 @@
-// error-pattern: error reading Clippy's configuration file: No such file or directory
+// error-pattern: error reading Clippy's configuration file
 
 #![feature(plugin)]
 #![plugin(clippy(conf_file="./tests/compile-fail/non_existant_conf.toml"))]

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-// error-pattern: error reading Clippy's configuration file: No such file or directory`
	`1`	`+// error-pattern: error reading Clippy's configuration file`
`2`	`2`
`3`	`3`	`#![feature(plugin)]`
`4`	`4`	`#![plugin(clippy(conf_file="./tests/compile-fail/non_existant_conf.toml"))]`