# Verification: cargo fuzz toolchain installation

**Date:** 2026-07-05
**Bead:** bf-4p23w
**Status:** PASS

## Acceptance Criteria

### 1. `cargo fuzz --version` runs without error
✅ **PASS** - Command succeeds and reports version 0.13.1

```bash
$ cargo fuzz --version
cargo-fuzz 0.13.1
```

### 2. Fuzz toolchain is present in `rustup show`
✅ **PASS** - Nightly toolchain is installed and active

```bash
$ rustup show
Default host: x86_64-unknown-linux-gnu
installed toolchains
--------------------
stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu (active)
...
```

The active toolchain in the pdftract workspace is `nightly-x86_64-unknown-linux-gnu`, which is required for cargo-fuzz.

### 3. No error messages about missing fuzz toolchain
✅ **PASS** - All commands execute successfully with no errors

## Additional Verification

- ✅ `cargo fuzz --help` works correctly, showing all available commands (init, add, build, run, cmin, tmin, coverage, etc.)
- ✅ `cargo fuzz list` successfully lists 6 existing fuzz targets:
  - cmap_parser
  - content
  - lexer
  - object_parser
  - stream_decoder
  - xref
- ✅ Fuzz directory structure exists with proper layout (`fuzz/fuzz_targets/`, `fuzz/corpus/`, `fuzz/artifacts/`)

## Conclusion

The cargo fuzz toolchain is properly installed and fully functional. All acceptance criteria are met.