tokio-timerfd is used at run time in 10 crates (of which 2 optionally). It is a direct run-time dependency in 4 crates.

Depender (with downloads and own rev deps) tokio-timerfd version
220 etherage ^0.2
160 alumet ^0.2.0
tokio-udt ^0.2
5 abcperf ^0.2.0