in below/model/src/collector.rs [265:283]
fn wrap<S: Sized>(
v: std::result::Result<S, cgroupfs::Error>,
) -> std::result::Result<Option<S>, cgroupfs::Error> {
if let Err(cgroupfs::Error::IoError(_, ref e)) = v {
if e.kind() == std::io::ErrorKind::NotFound {
return Ok(None);
}
if e.kind() == std::io::ErrorKind::Other {
if let Some(errno) = e.raw_os_error() {
if errno == /* ENODEV */ 19 {
// If the cgroup is removed after a control file is opened,
// ENODEV is returned. Ignore it.
return Ok(None);
}
}
}
}
v.map(Some)
}