More compile-fail tests for remote derive

test_suite/tests/compile-fail/remote/bad_remote.rs

@@ -0,0 +1,16 @@
+#[macro_use]
+extern crate serde_derive;
+
+mod remote {
+    pub struct S {
+        a: u8,
+    }
+}
+
+#[derive(Serialize)] //~ ERROR: proc-macro derive panicked
+#[serde(remote = "~~~")] //~^ HELP: failed to parse path: "~~~"
+struct S {
+    a: u8,
+}
+
+fn main() {}