assertion left != right failed

[xoriole]

INFO:__main__:Run Tribler: {'torrent': '', 'core': True, 'log_level': 'INFO'}
INFO:__main__:Root state dir: /Users/user/.TriblerExperimental
INFO:tribler.core.start_core:Start tribler core. API port: -1. API key: None. State dir: /Users/user/.TriblerExperimental.
INFO:tribler.tribler_config:Load: /Users/user/.TriblerExperimental/configuration.json.
INFO:Socks5Server:Started SOCKS5 server on port 56373
INFO:Socks5Server:Started SOCKS5 server on port 56374
INFO:Socks5Server:Started SOCKS5 server on port 56375
INFO:Socks5Server:Started SOCKS5 server on port 56376
INFO:Socks5Server:Started SOCKS5 server on port 56377
INFO:tribler.core.libtorrent.download_manager.download_manager:Creating a session
INFO:tribler.core.libtorrent.download_manager.download_manager:Hops: 0.
INFO:tribler.core.libtorrent.download_manager.download_manager:Libtorrent port: 0
INFO:tribler.core.libtorrent.download_manager.download_manager:could not load libtorrent state, got exception: FileNotFoundError(2, 'No such file or directory'). starting from scratch
INFO:tribler.core.libtorrent.download_manager.download_manager:Started libtorrent session for 0 hops on port 56378
INFO:IPv8CommunityLoader:Loading overlay <class 'abc.DatabaseComponent'>
INFO:IPv8CommunityLoader:Loading overlay <class 'ipv8.dht.discovery.DHTDiscoveryCommunity'>
INFO:DHTDiscoveryCommunity:DHT community initialized (peer mid b'c4535557c6dab66105be8f9927bcf002024db5bc')
INFO:IPv8CommunityLoader:Loading overlay <class 'tribler.core.knowledge.community.KnowledgeCommunity'>
INFO:KnowledgeCommunity:Knowledge community initialized
INFO:KnowledgeRulesProcessor:Start
INFO:KnowledgeRulesProcessor:Register process_queue task with interval: 5 sec
INFO:IPv8CommunityLoader:Loading overlay <class 'tribler.core.rendezvous.community.RendezvousCommunity'>
INFO:TrackerManager:No tracker blacklist file found at /Users/user/.TriblerExperimental/tracker_blacklist.txt.
INFO:IPv8CommunityLoader:Loading overlay <class 'abc.TorrentCheckerComponent'>
INFO:IPv8CommunityLoader:Loading overlay <class 'tribler.core.tunnel.community.TriblerTunnelCommunity'>
INFO:TriblerTunnelCommunity:Exit settings: BT=False, IPv8=False
INFO:TriblerTunnelCommunity:Using DispatcherEndpoint with flags {8, 1}
INFO:IPv8CommunityLoader:Loading overlay <class 'tribler.core.content_discovery.community.ContentDiscoveryCommunity'>
INFO:ContentDiscoveryCommunity:Content Discovery Community initialized (peer mid b'c4535557c6dab66105be8f9927bcf002024db5bc')
INFO:IPv8CommunityLoader:Finished loading communities!
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8090 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8091 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8092 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8093 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8094 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8095 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8096 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8097 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8098 (Address already in use (os error 48)). Retrying now.
[2024-04-18T13:29:29Z ERROR rust_endpoint::util] Failed to bind to 0.0.0.0:8099 (Address already in use (os error 48)). Retrying now.
INFO:RESTManager:Starting RESTManager...
INFO:RESTManager:Remove head
apispec/ext/marshmallow/openapi.py:135: UserWarning: Multiple schemas resolved to the name File. The name has been modified. Either manually add each of the schemas with a different name or provide a custom schema_name_resolver.
INFO:RESTManager:Http enabled
INFO:RESTManager:Starting HTTP REST API server on port 56030...
INFO:DownloadManager:Load checkpoints...
INFO:DownloadManager:Checkpoints are loaded
ERROR:RESTManager:Can't start HTTP REST API on port 56030: OSError: [Errno 48] error while attempting to bind on address ('127.0.0.1', 56030): address already in use
Traceback (most recent call last):
  File "tribler/core/restapi/rest_manager.py", line 153, in start_http_site
  File "aiohttp/web_runner.py", line 119, in start
  File "asyncio/base_events.py", line 1463, in create_server
OSError: [Errno 48] error while attempting to bind on address ('127.0.0.1', 56030): address already in use
Traceback (most recent call last):
  File "run_tribler.py", line 73, in <module>
  File "run_tribler.py", line 65, in main
  File "tribler/core/start_core.py", line 42, in run_core
  File "asyncio/runners.py", line 43, in run
  File "asyncio/base_events.py", line 616, in run_until_complete
  File "tribler/core/start_core.py", line 21, in run_session
  File "tribler/core/session.py", line 119, in start
  File "tribler/core/restapi/rest_manager.py", line 137, in start
  File "tribler/core/restapi/rest_manager.py", line 153, in start_http_site
  File "aiohttp/web_runner.py", line 119, in start
  File "asyncio/base_events.py", line 1463, in create_server
OSError: [Errno 48] error while attempting to bind on address ('127.0.0.1', 56030): address already in use
[25089] Failed to execute script run_tribler
thread 'tokio-runtime-worker' panicked at /Users/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/pyo3-0.20.3/src/gil.rs:199:21:
assertion `left != right` failed: The Python interpreter is not initialized and the `auto-initialize` feature is not enabled.

Consider calling `pyo3::prepare_freethreaded_python()` before attempting to use Python APIs.
  left: 0
 right: 0
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[egbertbouman]

To me it looks like the interpreter has already shut down for another reason ("address already in use"), but the rust module is still trying to call Python. I'm not sure how a fix would look like.

Restarting the interpreter seems like a bad idea, and there doesn't seem to be a PyO3 function that checks if there's an interpreter running.

My Windows machine seems fine. Is this on MacOS?

[qstokkink]

The port claiming has been fixed in #16. If the Rust binding is only making the pre-existing crash worse, it seems valid to close this issue now.