RGB-Tools / RGB-Tools/rust-lightning

RUSTSEC-2026-0173: proc-macro-error2 is unmaintained

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Dominant language
Rust
Stars
9
Forks
18
PR merge metrics
No merged PRs in 30d

Description

proc-macro-error2 is unmaintained

Details
Status unmaintained
Package proc-macro-error2
Version 2.0.1
URL https://github.com/GnomedDev/proc-macro-error-2/issues/17
Date 2026-06-07

The author of proc-macro-error2 has confirmed that the crate is no longer maintained and recommends that users migrate away from it.

proc-macro-error2 was originally created as a maintained fork of proc-macro-error (see RUSTSEC-2024-0370). Both the original crate and this fork are now unmaintained.

Possible Alternative(s)

See advisory page for additional details.

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 locating where the proc-macro-error2 version 2.0.1 dependency is declared and which project components use it. Review the listed manyhow and proc-macro2-diagnostics alternatives; the work is complete when the unmaintained dependency has been migrated away from and the project still builds and tests successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
28/100

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