AFLplusplus/LibAFL

Sunsetting select LibAFL crates

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#3,770 opened on Mar 30, 2026

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Description

We no longer want to support some crates; the technical debt currently blocking CI is just too much to handle. For example: the concolic support has largely gone unused, and no current maintainer is a code owner for this. What other crates should we delete?

Contributor guide

Research direction
Review the crate list in LibAFL's Cargo.toml and identify crates that lack maintainership, have low usage, or cause CI debt. Discuss with maintainers to propose a removal list.
Tech stack
rust
Domain
testingdevtools
Issue type
Chore
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustLibAFL architecture
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30