Move /src/test to /tests

tests/ui/rfc-2005-default-binding-mode/no-double-error.rs

@@ -0,0 +1,11 @@
+// Without caching type lookups in FnCtxt.resolve_ty_and_def_ufcs
+// the error below would be reported twice (once when checking
+// for a non-ref pattern, once when processing the pattern).
+
+fn main() {
+    let foo = 22;
+    match foo {
+        u32::XXX => { } //~ ERROR no associated item named
+        _ => { }
+    }
+}