From 8082efd684cf9523ae52c8729cc1a665dc94f26e Mon Sep 17 00:00:00 2001
From: "Jonathan D.A. Jewell" <6759885+hyperpolymath@users.noreply.github.com>
Date: Sat, 19 Sep 2026 23:03:14 +0000
Subject: [PATCH] fix(ci): pin third-party actions to full commit SHAs
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The account's Actions policy requires a full-length SHA ref. A tag or branch ref is refused at
startup — `startup_failure`, no jobs, "this workflow graph cannot be shown" — so these workflows
could not run at all. This resolves each ref to the commit it currently points at and records the
ref in a trailing comment, e.g. `actions/checkout@<sha> # v4`.

`dtolnay/rust-toolchain` takes its toolchain from the ref itself, so those steps also gained an
explicit `with: toolchain:` input; without it, a SHA ref would silently lose the channel.

No behaviour is intended to change beyond the pins.
---
 .github/workflows/rust-ci.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index b3c98b3..c34f7a3 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -13,9 +13,10 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7
+      - uses: dtolnay/rust-toolchain@6bed0761d98439e5a578e2877258200ad565ba87  # stable
         with:
+          toolchain: stable
           components: rustfmt, clippy
       - name: fmt
         run: cargo fmt --check