Internal Error related to "explanation"

[TheIronBorn]

When running cargo check on an empty main.rs file I get this:

Rust Enhanced Internal Error: Traceback (most recent call last):
  File "C:\Users\<user>\AppData\Roaming\Sublime Text\Installed Packages\Rust Enhanced.sublime-package\rust/rust_proc.py", line 307, in _read_stdout
    self.listener.on_json(self, result)
  File "C:\Users\<user>\AppData\Roaming\Sublime Text\Installed Packages\Rust Enhanced.sublime-package\rust/opanel.py", line 123, in on_json
    None, self.msg_cb)
  File "C:\Users\<user>\AppData\Roaming\Sublime Text\Installed Packages\Rust Enhanced.sublime-package\rust/messages.py", line 821, in add_rust_messages
    primary_message)
  File "C:\Users\<user>\AppData\Roaming\Sublime Text\Installed Packages\Rust Enhanced.sublime-package\rust/messages.py", line 1086, in _collect_rust_messages
    set_primary_message(span, info['message'])
  File "C:\Users\<user>\AppData\Roaming\Sublime Text\Installed Packages\Rust Enhanced.sublime-package\rust/messages.py", line 942, in set_primary_message
    if info['code'] and info['code']['explanation']:
KeyError: 'explanation'

error: could not compile `testtest` (bin "testtest") due to 1 previous error
[Finished in 0.9s with exit code 101]

And the corresponding cargo check --message-format json output is:

    Checking testtest v0.1.0 (C:\<path>\testtest)
{"reason":"compiler-message","package_id":"path+file:///<path>/testtest#0.1.0","manifest_path":"C:\\<path>\\testtest\\Cargo.toml","target":{"kind":["bin"],"crate_types":["bin"],"name":"testtest","src_path":"C:\\<path>\\testtest\\src\\main.rs","edition":"2024","doc":true,"doctest":false,"test":true},"message":{"rendered":"error[E0601]: `main` function not found in crate `testtest`\n  |\n  = note: consider adding a `main` function to `src\\main.rs`\n\n","$message_type":"diagnostic","children":[{"children":[],"code":null,"level":"note","message":"consider adding a `main` function to `src\\main.rs`","rendered":null,"spans":[]}],"level":"error","message":"`main` function not found in crate `testtest`","spans":[{"byte_end":0,"byte_start":0,"column_end":1,"column_start":1,"expansion":null,"file_name":"src\\main.rs","is_primary":true,"label":null,"line_end":0,"line_start":0,"suggested_replacement":null,"suggestion_applicability":null,"text":[]}],"code":{"code":"E0601"}}}
{"reason":"compiler-message","package_id":"path+file:///<path>/testtest#0.1.0","manifest_path":"C:\\<path>\\testtest\\Cargo.toml","target":{"kind":["bin"],"crate_types":["bin"],"name":"testtest","src_path":"C:\\<path>\\testtest\\src\\main.rs","edition":"2024","doc":true,"doctest":false,"test":true},"message":{"rendered":"For more information about this error, try `rustc --explain E0601`.\n","$message_type":"diagnostic","children":[],"level":"failure-note","message":"For more information about this error, try `rustc --explain E0601`.","spans":[],"code":null}}
error: could not compile `testtest` (bin "testtest") due to 1 previous error
{"reason":"build-finished","success":false}

The error started on rust version:

rustc 1.92.0-nightly (595b9a498 2025-10-03)
binary: rustc
commit-hash: 595b9a498bc55fcd30111e430d8e4290ed833b4c
commit-date: 2025-10-03
host: x86_64-pc-windows-msvc
release: 1.92.0-nightly
LLVM version: 21.1.2

[ehuss]

Thanks for the report. This should be fixed on nightly in a day or two via rust-lang/cargo#16075.

[ehuss]

Closing as this should be resolved on the latest nightly.