Crash at startup with "No ports free" from portpicker crate

[sarim]

After docker compose up

Attaching to backend-1, dashboard-1
backend-1    | 2025-04-21T16:34:04.363056Z  INFO convex_local_backend: Starting a Convex backend
backend-1    | 2025-04-21T16:34:04.363318Z  INFO convex_local_backend: The self-host Convex backend will periodically communicate with a remote beacon server. This is to help Convex understand and improve the product. You can disable this telemetry by setting the --disable-beacon flag or the DISABLE_BEACON environment variable if you are self-hosting using the Docker image.
backend-1    | 2025-04-21T16:34:04.364572Z  INFO convex_local_backend: Sentry is not enabled.
backend-1    | 2025-04-21T16:34:04.377105Z  INFO local_backend::persistence: Connected to SQLite at /convex/data/db.sqlite3
backend-1    | 2025-04-21T16:34:04.379422Z  INFO search::searcher::searcher: Searchlight starting, local_storage_path: /convex/data/tmp/.tmppQguyK max_size: 524.3 MB
backend-1    | 2025-04-21T16:34:04.402241Z  INFO database::database: Bootstrapping indexes...
backend-1    | 2025-04-21T16:34:04.411470Z  INFO indexing::backend_in_memory_indexes: Loading 73 enabled indexes
backend-1    | 2025-04-21T16:34:04.414225Z  INFO database::database: Bootstrapping table metadata...
backend-1    | 2025-04-21T16:34:04.417261Z  INFO database::subscription: Starting subscriptions worker
backend-1    | 2025-04-21T16:34:04.435212Z  INFO indexing::backend_in_memory_indexes: Loading 73 enabled indexes
backend-1    | 2025-04-21T16:34:04.443551Z  INFO database::committer: Loaded indexes into memory
backend-1    | 2025-04-21T16:34:04.445402Z  INFO application: files storage path: "/convex/data/storage/files"
backend-1    | 2025-04-21T16:34:04.445727Z  INFO application: modules storage path: "/convex/data/storage/modules"
backend-1    | 2025-04-21T16:34:04.445738Z  INFO application: search storage path: "/convex/data/storage/search"
backend-1    | 2025-04-21T16:34:04.445746Z  INFO application: exports storage path: "/convex/data/storage/exports"
backend-1    | 2025-04-21T16:34:04.445753Z  INFO application: snapshot_imports storage path: "/convex/data/storage/snapshot_imports"
backend-1    | 2025-04-21T16:34:04.445757Z  INFO database::database: Set search storage to LocalDirStorage { dir: "/convex/data/storage/search" }
backend-1    | 2025-04-21T16:34:04.445760Z  INFO application: Local { dir: "/convex/data/storage" } storage is configured.
backend-1    | 2025-04-21T16:34:04.445773Z  WARN cmd_util::env: Invalid value  for ACTIONS_USER_TIMEOUT_SECS, falling back to 600: ParseIntError { kind: Empty }
backend-1    | 2025-04-21T16:34:04.464413Z  INFO node_executor::local: Using local node executor. Source: /convex/data/tmp/.tmpLoULst/local.cjs
backend-1    | 2025-04-21T16:34:04.667478Z  INFO database::committer: All clients have gone away, shutting down committer...
backend-1    | 2025-04-21T16:34:04.668133Z  INFO search::fragmented_segment: Prefetcher shutting down!
backend-1    | 2025-04-21T16:34:04.668622Z ERROR common::errors: Caught error (RUST_BACKTRACE=1 RUST_LOG=info,common::errors=debug for full trace): No ports free
backend-1    | Error: No ports free

Same issue reported by another person in discord: https://discord.com/channels/1019350475847499849/1356355212255695101

I did a bit of debugging, looks like the culprit is portpicker crate, which was last updated 4 years ago.
Error is coming from this line

convex-backend/crates/node_executor/src/local.rs

Line 80 in 4593d35

let port = portpicker::pick_unused_port().context("No ports free")?;

Which is added in this commit 6be386a on March 8.