journalctl -u gogs

May 30 01:13:07 nas systemd[1]: gogs.service: Main process exited, code=exited, status=1/FAILURE
May 30 01:13:07 nas systemd[1]: gogs.service: Unit entered failed state.
May 30 01:13:07 nas systemd[1]: gogs.service: Failed with result 'exit-code'.
May 30 01:13:07 nas systemd[1]: gogs.service: Service hold-off time over, scheduling restart.
May 30 01:13:07 nas systemd[1]: Stopped Gogs (Go Git Service).
May 30 01:13:07 nas systemd[1]: Started Gogs (Go Git Service).
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [T] Custom path: /usr/share/gogs/custom
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [T] Log path: /var/log/gogs
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Gogs: Go Git Service 0.9.13.0318
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Log Mode: Console(Trace)
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Cache Service Enabled
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Session Service Enabled
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] SQLite3 Supported
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Run Mode: Development
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [I] Listen: http://0.0.0.0:3000
May 30 01:13:07 nas gogs[19863]: 2016/05/30 01:13:07 [...gits/gogs/cmd/web.go:585 runWeb()] [E] Fail to start server: listen tcp 0.0.0.0:3000: bind: address already in use
May 30 01:13:07 nas systemd[1]: gogs.service: Main process exited, code=exited, status=1/FAILURE
May 30 01:13:07 nas systemd[1]: gogs.service: Unit entered failed state.
May 30 01:13:07 nas systemd[1]: gogs.service: Failed with result 'exit-code'.
May 30 01:13:07 nas systemd[1]: gogs.service: Service hold-off time over, scheduling restart.
May 30 01:13:07 nas systemd[1]: Stopped Gogs (Go Git Service).
May 30 01:13:07 nas systemd[1]: gogs.service: Start request repeated too quickly.
May 30 01:13:07 nas systemd[1]: Failed to start Gogs (Go Git Service).