I0714 12:12:07.212220       1 serving.go:386] Generated self-signed cert in-memory
E0714 12:12:07.213756       1 run.go:72] "command failed" err="failed to create listener: failed to listen on 0.0.0.0:10257: listen tcp 0.0.0.0:10257: bind: address already in use"