auto merge of #12055 : dguenther/rust/tidy_test, r=alexcrichton

This PR extends the tidy formatting check to rust files in the test folder. To facilitate this, a few flags were added to tidy:

* `xfail-tidy-cr` - Disables the check for CR characters for all following lines in the file
* `xfail-tidy-tab` - Disables the check for tab characters for all following lines in the file
* `xfail-tidy-linelength` - Disables the line length check for all following lines in the file

Checks should not have to be disabled often. I disabled line length checks in `debug-info` tests that use `debugger:` checks, but aside from that, there were relatively few exclusions. Running tidy on all the tests does slow down the formatting check, so it may be worth investigating further optimization.

cc #4534

1 files changed, 2 insertions, 1 deletions

diff --git a/src/test/compile-fail/static-vec-repeat-not-constant.rs b/src/test/compile-fail/static-vec-repeat-not-constant.rs
index 7721e18537e..03be2cc8f0f 100644
--- a/src/test/compile-fail/static-vec-repeat-not-constant.rs
+++ b/src/test/compile-fail/static-vec-repeat-not-constant.rs
@@ -10,6 +10,7 @@
 
 fn foo() -> int { 23 }
 
-static a: [int, ..2] = [foo(), ..2]; //~ ERROR: function calls in constants are limited to struct and enum constructors
+static a: [int, ..2] = [foo(), ..2];
+//~^ ERROR: function calls in constants are limited to struct and enum constructors
 
 fn main() {}