fix(ci): release-plz cargo package fails — disable sccache wrapper#380
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The R4-activated release-plz workflow failed on its first real run: cargo package failed: could not execute process `sccache rustc -vV` (never executed) — No such file or directory (os error 2) Root cause: .cargo/config.toml sets `rustc-wrapper = "sccache"` repo- wide for local-dev caching. release-plz spawns `cargo package` in per-tag worktrees, which inherits the wrapper, but GitHub-hosted runners don't have sccache installed. Fix: add workflow-level `RUSTC_WRAPPER: ""` + `CARGO_INCREMENTAL: 0`, mirroring the identical guard already in pr-fast.yml (line 63). This defeats the config value without touching .cargo/config.toml (which would degrade local dev UX). Also: replace the R7 OIDC job's actionlint-flagged `if: false` with a repo-variable gate (`vars.ENABLE_CRATES_IO_PUBLISH == 'true'`) — keeps the job dormant, satisfies actionlint, and makes R8 activation a Settings toggle instead of a workflow edit.
This was referenced Jun 9, 2026
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Problem
The R4-activated release-plz workflow failed on its first real run (run 27239208318) after PR #379 merged:
Root cause
.cargo/config.tomlsetsrustc-wrapper = "sccache"repo-wide for local-dev caching. release-plz spawnscargo packagein per-tag worktrees, which inherits the wrapper — but GitHub-hosted runners don't have sccache installed.This is the same class of bug already solved in
pr-fast.yml:63(RUSTC_WRAPPER: ""); release-plz.yml simply never got the guard because it was manual-only until R4.Fix
RUSTC_WRAPPER: ""+CARGO_INCREMENTAL: 0env, mirroring pr-fast.yml. Defeats the config value without touching.cargo/config.toml(preserves local dev UX).if: falsewith a repo-variable gate (vars.ENABLE_CRATES_IO_PUBLISH == 'true') — keeps the job dormant, satisfies actionlint, makes R8 activation a Settings toggle.Verification
actionlint .github/workflows/release-plz.yml: ✅ 0 warnings