Implement error::Error for TimerError
Implement error::Error for TimerError

fuchsia-mirror/third_party-mio,fuchsia-mirror/third_party-mio,carllerche/mio,carllerche/mio,murarth/mio,mneumann/mio,mneumann/mio,arthurprs/mio,asomers/mio,rrichardson/mio,dwrensha/mio,asomers/mio