Fix proc_macro_dylib_path when they are built in both opt and debug (#1089)
Fix proc_macro_dylib_path when they are built in both opt and debug (#1089)

* Fix proc_macro_dylib_path in cases where they are built in both opt and debug

* Resolve rustfmt issues

* Update test comment
bazelbuild/rules_rust,bazelbuild/rules_rust,bazelbuild/rules_rust,bazelbuild/rules_rust,bazelbuild/rules_rust