Add error banner when running test suite without nightly compiler

This commit is contained in:
David Tolnay
2017-10-22 15:46:17 -07:00
parent 826f656e28
commit 99e8686189
+3
View File
@@ -0,0 +1,3 @@
#![feature(/*=============================================]
#![=== Serde test suite requires a nightly compiler. ===]
#![====================================================*/)]