message: Do not try to open traceme on special PIDs
diff: @@ -52,6 +52,8 @@ pub fn init_state() -> &'static State {
  }
  }
  pub fn is_traceme(pid: pid_t) -> bool {
  + // Skip special PIDs (<=0)
  + if pid <= 0 { return false; }
  File::open(
  &CString::new(format!("chan:ptrace-relibc/{}/traceme", pid)).unwrap(),
  fcntl::O_PATH,
  