I0520 21:37:34.264721       1 serving.go:386] Generated self-signed cert in-memory
E0520 21:37:34.265993       1 run.go:72] "command failed" err="failed to create listener: failed to listen on 0.0.0.0:10259: listen tcp 0.0.0.0:10259: bind: address already in use"