Merge pull request rust-lang#348 from RalfJung/tests

update compiletest

Author: oli-obk

Cargo.lock

@@ -33,7 +33,7 @@ rustc_miri = { path = "src/librustc_mir" }
 cargo_miri = ["cargo_metadata"]
 
 [dev-dependencies]
-compiletest_rs = { version = "0.2.10", features = ["tmp"] }
+compiletest_rs = { version = "0.3", features = ["tmp"] }
 
 [workspace]
 exclude = ["xargo", "cargo-miri-test", "rustc_tests"]