Move /src/test to /tests

tests/ui/rustc-rust-log.rs

@@ -0,0 +1,11 @@
+// run-pass
+// This test is just checking that we won't ICE if logging is turned
+// on; don't bother trying to compare that (copious) output.
+//
+// dont-check-compiler-stdout
+// dont-check-compiler-stderr
+// compile-flags: --error-format human
+// aux-build: rustc-rust-log-aux.rs
+// rustc-env:RUSTC_LOG=debug
+
+fn main() {}