this derivation will be built:
  /nix/store/mbpl1gb1g049sn1qcma9zzrxfhbss7fq-treefmt-check.drv
error: Cannot build '/nix/store/mbpl1gb1g049sn1qcma9zzrxfhbss7fq-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/vmh3hjgqcffcrr0gpw116w7pdpcw2z90-treefmt-check
       Last 25 log lines:
       > 502 │           // public IP with bob's UDP port, i.e. exactly H's listener
       >     │           -----------------------------------------------------------
       > 503 │           // (#100). `addr_owners` knows which addresses answered as
       >     │           ----------------------------------------------------------
       > 504 │           // whom; anything attributed to a node other than bob is
       >     │           --------------------------------------------------------
       > 505 │           // dropped. Likewise an address inside the mesh's own Subnets
       >     │           -------------------------------------------------------------
       > 506 │           // was learnt through the tunnel; a meta connection can't
       >     │           ---------------------------------------------------------
       > 507 │           // bootstrap over the VPN it is meant to carry.
       >     │           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       > 508 │ ╭         let known: Vec<SocketAddr> = nid
       >     · │
       > 526 │ │             .collect();
       >     │ ╰───────────────────────'
       >
       > Error: 2 error(s) found in code.
       > Help: Scan succeeded and found error level diagnostics in the codebase.
       >
       >
       > traversed 729 files
       > emitted 300 files for processing
       > formatted 27 files (0 changed) in 650ms
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/mbpl1gb1g049sn1qcma9zzrxfhbss7fq-treefmt-check.drv