On FreeBSD tokio-serial seems not to notice, that port is (physically) removed during wait for inbound data

[p-kraszewski]

Environment

• OS: FreeBSD 13.1-RELEASE GENERIC, default config
• Rust: 1.62.0 (a8314ef7d 2022-06-27)
• tokio-serial v5.4.3
• mio-serial v5.0.2
• serialport v4.2.0

Test scenario

• FreeBSD box with USB-Serial adapter (device at /dev/ttyU0)
• The tokio-serial is waiting for inbound data (reacts as expected on inbound data, the codec framework is exceptional!)
• I yank the adapter from socket EDIT: (/dev/ttyU0 does not disappear as long as program holds it)
• The tokio-serial is still waiting... For something... Crickets...
• As /dev/ttyU0 is still held, after re-plugging the adapter registers as /dev/ttyU1
• The tokio-serial is still waiting... For something... Crickets...

Expected behavior

After yanking the cable, XXX.next() should return error on next poll.

Is that something to be resolved at the tokio-serial or mio-serial level?

Best regards