rust-lang / rust-lang/rust

Could not compile in release. File name too long.

Open
#147,956 6 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

C-bug needs-triage
Dominant language
Rust
Stars
119k
Forks
16.1k
PR merge metrics
PR metrics pending

Description

I tried to compile this repository https://github.com/coolcatcoder/mind_control_retry with cargo run --release.
(This does not happen in debug, only release.)

I expected it to compile.

Instead, this happened:

error: could not write output to /home/coolcatcoder/Documents/GitHub/mind_control_retry/target/release/deps/230fb44afa6e3556-8bcaa95a9ca3f52.bevy_transform_interpolation-bbcabe0d7d92346f.bevy_transform_interpolation.12ba7750790b6058-cgu.0.rcgu.o.rcgu.o: File name too long
Meta

rustc --version --verbose:

rustc 1.92.0-nightly (695857bc3 2025-10-21)
binary: rustc
commit-hash: 695857bc3f72ec4f59c79f323460fe488c38a53f
commit-date: 2025-10-21
host: x86_64-unknown-linux-gnu
release: 1.92.0-nightly
LLVM version: 21.1.3

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing cargo run --release with the linked mind_control_retry repository on the reported nightly Rust toolchain. Investigate how the release build produces the object-file path shown in the error and verify the fix by confirming that the project compiles successfully without a “File name too long” failure.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.