Having the same problem, I'm running LGSM on Linux (debian 9) x64.
Last patch from dcode didn't fix my issues.
Rust:IO keeps on reloading it self, over and over again, and until the server stops.
Info from my server:
(13:41:26) | Updating Rust:IO ...
(13:41:26) | Rust:IO: Update complete
(13:41:26) | Installing Rust:IO ...
(13:41:26) | Rust:IO> Setting up Rust:IO 2.3.7189.16230 ...
(13:41:26) | Rust:IO> Creating directories ...
(13:41:26) | Rust:IO> Applying config ...
(13:41:26) | Rust:IO> Initializing database ...
(13:41:26) | Rust:IO> Generating map image (this may take a while) ...
(13:41:31) | Rust:IO> Generation complete
--------- Summary --------
Render : 1136.243ms
Postprocess : 3373.266ms
Shadows : 33.604ms
FXAA : 3311.622ms
Encoding : 50.830ms
Other : 10.883ms
--------------------------
Total : 4571.221ms
(13:41:31) | Rust:IO> Starting HTTP server on 10.**.**.**:29015 ...
(13:41:31) | Installing Rust:IO failed: Exception has been thrown by the target of an invocation.
(13:41:31) | Caused by: There's another listener for http://10.**.**.**:29015/.