proc_macro: add ability to log to stderr and view output in vscode
@@ -189,7 +189,7 @@ fn mk_child(path: &Path, args: impl IntoIterator<Item = impl AsRef<OsStr>>) -> i
.args(args)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
- .stderr(Stdio::null())
+ .stderr(Stdio::inherit())
.spawn()
}
