Here's an excerpt of the log from when I just created a new server called PocketTest on port 25566, up to when I gave up trying to start it. Meanwhile, my other one continues to run on the default port.
{"level":"info","message":"[test] transmittting existing file contents: logs/latest.log (635 bytes)","timestamp":"2016-04-05T01:42:3
{"command":"create","server_name":"PocketTest","properties":{"server-port":"25566","difficulty":"1","gamemode":"1"},"level":"info","
{"level":"info","message":"[PocketTest] Server created in filesystem.","timestamp":"2016-04-05T01:48:18.512Z"}
{"level":"info","message":"[PocketTest] Discovered server","timestamp":"2016-04-05T01:48:18.912Z"}
{"level":"error","message":"[PocketTest] Create tail on logs/latest.log failed","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"info","message":"[PocketTest] Watching for file generation: logs/latest.log","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"error","message":"[PocketTest] Create tail on server.log failed","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"info","message":"[PocketTest] Watching for file generation: server.log","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"error","message":"[PocketTest] Create tail on proxy.log.0 failed","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"info","message":"[PocketTest] Watching for file generation: proxy.log.0","timestamp":"2016-04-05T01:48:18.913Z"}
{"level":"info","message":"[PocketTest] mcserver (undefined) joined server namespace","timestamp":"2016-04-05T01:48:18.932Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"modify_sc\"","timestamp":"2016-04-05T01:48:28.290Z"}
{"level":"info","message":"[PocketTest] received request \"modify_sc\"","timestamp":"2016-04-05T01:48:28.292Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"modify_sc\"","timestamp":"2016-04-05T01:48:29.606Z"}
{"level":"info","message":"[PocketTest] received request \"modify_sc\"","timestamp":"2016-04-05T01:48:29.606Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"modify_sc\"","timestamp":"2016-04-05T01:48:30.273Z"}
{"level":"info","message":"[PocketTest] received request \"modify_sc\"","timestamp":"2016-04-05T01:48:30.273Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"copy_profile\"","timestamp":"2016-04-05T01:48:31.036Z"}
{"level":"info","message":"[PocketTest] received request \"copy_profile\"","timestamp":"2016-04-05T01:48:31.036Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"modify_sc\"","timestamp":"2016-04-05T01:48:37.442Z"}
{"level":"info","message":"[PocketTest] received request \"modify_sc\"","timestamp":"2016-04-05T01:48:37.442Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"modify_sc\"","timestamp":"2016-04-05T01:48:39.353Z"}
{"level":"info","message":"[PocketTest] received request \"modify_sc\"","timestamp":"2016-04-05T01:48:39.354Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"backup\"","timestamp":"2016-04-05T01:48:43.682Z"}
{"level":"info","message":"[PocketTest] received request \"backup\"","timestamp":"2016-04-05T01:48:43.683Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"archive\"","timestamp":"2016-04-05T01:48:45.275Z"}
{"level":"info","message":"[PocketTest] received request \"archive\"","timestamp":"2016-04-05T01:48:45.275Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"accept_eula\"","timestamp":"2016-04-05T01:48:52.416Z"}
{"level":"info","message":"[PocketTest] received request \"accept_eula\"","timestamp":"2016-04-05T01:48:52.416Z"}
{"level":"info","message":"[PocketTest] eula.txt detected: ACCEPTED (eula=true)","timestamp":"2016-04-05T01:48:52.878Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"start\"","timestamp":"2016-04-05T01:48:53.701Z"}
{"level":"info","message":"[PocketTest] received request \"start\"","timestamp":"2016-04-05T01:48:53.701Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"accept_eula\"","timestamp":"2016-04-05T01:53:48.692Z"}
{"level":"info","message":"[PocketTest] received request \"accept_eula\"","timestamp":"2016-04-05T01:53:48.692Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"start\"","timestamp":"2016-04-05T01:53:49.478Z"}
{"level":"info","message":"[PocketTest] received request \"start\"","timestamp":"2016-04-05T01:53:49.478Z"}
{"level":"info","message":"[PocketTest] undefined issued command : \"start\"","timestamp":"2016-04-05T01:55:03.704Z"}
{"level":"info","message":"[PocketTest] received request \"start\"","timestamp":"2016-04-05T01:55:03.705Z"}