From d564f862d787e0a314ccc94d7190cfbcbe99d5cd Mon Sep 17 00:00:00 2001
From: Stephen Waits <steve@waits.net>
Date: Wed, 6 May 2026 08:08:39 -0600
Subject: [PATCH] ci: fix mdbook edition + isolate fuzz crate from workspace
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mdbook 0.4.40 (the version pinned in .github/workflows/docs.yml)
doesn't recognize edition = '2024' under [rust], failing the docs
build. Drop to '2021' for the in-book code blocks; the heuropt
crate itself stays on Rust 2024.

Adding [workspace] to the root Cargo.toml made fuzz/Cargo.toml
inherit it, but fuzz isn't in the members list — every fuzz-smoke
job failed with 'current package believes it's in a workspace when
it's not'. Add an empty [workspace] table at the top of
fuzz/Cargo.toml so cargo treats fuzz as the root of its own
workspace and stops walking up.
---
 docs/book/book.toml | 2 +-
 fuzz/Cargo.lock     | 2 +-
 fuzz/Cargo.toml     | 4 ++++
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/docs/book/book.toml b/docs/book/book.toml
index 8c81c09..f087e48 100644
--- a/docs/book/book.toml
+++ b/docs/book/book.toml
@@ -31,4 +31,4 @@ use-boolean-and = true
 enable = true
 
 [rust]
-edition = "2024"
+edition = "2021"
diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index b8479fb..e068d97 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -66,7 +66,7 @@ dependencies = [
 
 [[package]]
 name = "heuropt"
-version = "0.3.0"
+version = "0.8.0"
 dependencies = [
  "rand",
  "rand_distr",
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index baf728c..34c6227 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -1,3 +1,7 @@
+[workspace]
+# Detach from the parent heuropt workspace so cargo-fuzz can build
+# this crate independently without listing it as a workspace member.
+
 [package]
 name = "heuropt-fuzz"
 version = "0.0.0"