Address review comments and CI failures

src/test/compile-fail/runtime-depend-on-needs-runtime.rs

@@ -0,0 +1,7 @@
+// aux-build:needs-panic-runtime.rs
+// aux-build:depends.rs
+// error-pattern:cannot depend on a crate that needs a panic runtime
+
+extern crate depends;
+
+fn main() {}