Fix accidental blocking socket in crashtracking

Rust stdlib UnixListener is not async by default unlike the tokio one. It did apparently not fail during manual testing, but CI showed it sometimes failing.

Explicitly making it set_nonblocking(true).

Signed-off-by: Bob Weinand <bob.weinand@datadoghq.com>

crashtracker/src/receiver.rs

@@ -41,7 +41,12 @@ pub fn get_unix_socket(socket_path: impl AsRef<str>) -> anyhow::Result<UnixListe
  use std::os::linux::net::SocketAddrExt;
  std::os::unix::net::SocketAddr::from_abstract_name(socket_path.as_ref())
  .and_then(|addr| {
- std::os::unix::net::UnixListener::bind_addr(&addr).and_then(UnixListener::from_std)
+ std::os::unix::net::UnixListener::bind_addr(&addr)
+ .and_then(|listener| {
+ listener.set_nonblocking(true)?;
+ Ok(listener)
+ })
+ .and_then(UnixListener::from_std)
  })
  .map_err(anyhow::Error::msg)
  };