Import proc-macro-error-1.0.2

Change-Id: Iebb634ed3b9e204e58ffc8c1035d9e982748ea62
diff --git a/tests/ui/emit.rs b/tests/ui/emit.rs
new file mode 100644
index 0000000..81d4e0b
--- /dev/null
+++ b/tests/ui/emit.rs
@@ -0,0 +1,7 @@
+extern crate test_crate;
+use test_crate::*;
+
+emit!(one, two, three, four);
+emit_notes!(one, two);
+
+fn main() {}