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ci: 覆盖率门禁改用 cargo-nextest 运行 Rust 测试 - #248
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`cargo llvm-cov` 按二进制一个接一个地跑测试：2026-11-10 的 CI 上 101 个测试二进制自身用了 426 秒，其中 voltip-core 的 tests/long.rs 一个就 209 秒，别的二进制只能等它跑完。 - Makefile：coverage-gate 改为 `cargo llvm-cov nextest`，参数不变，缺 cargo-nextest 时直接报错。 - .config/nextest.toml：失败全部报告（fail-fast = false）；跑过 60 秒标为 SLOW， 跑过 10 分钟终止并记为 TIMEOUT，挂住的测试在 CI 步骤的 25 分钟上限之前就失败并留下名字。 - ci.yml：cargo-nextest 0.9.151 由同一个 install-action 预编译安装（CARGO_NEXTEST_VERSION）。 - AGENTS.md、docs/runbook.md 同步说明。 本机 32 核、构建已缓存：覆盖率门禁 431 → 278 秒；2086 个测试通过、42 个跳过，与原来一致； 行覆盖率 92.95%，与原来一致。
Codecov Report✅ All modified and coverable lines are covered by tests. @@ Coverage Diff @@
## main #248 +/- ##
==========================================
- Coverage 93.57% 93.55% -0.02%
==========================================
Files 489 489
Lines 85860 85860
Branches 4909 4909
==========================================
- Hits 80341 80329 -12
- Misses 4850 4862 +12
Partials 669 669
Flags with carried forward coverage won't be shown. Click here to find out more. 🚀 New features to boost your workflow:
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问题
CI 的
verify · rust gates里，覆盖率门禁（make coverage-gate）是最长的一步：最近 5 次main运行分别是 699、682、510、701、597 秒，中位数 682 秒。cargo llvm-cov按二进制一个接一个地跑测试，101 个测试二进制自身用了 426 秒，其中 voltip-core 的tests/long.rs一个就 209 秒，其他二进制只能等它跑完。改动
Makefile：coverage-gate改为cargo llvm-cov nextest，其余参数不变；没装 cargo-nextest 时直接报错。coverage-lcov照旧从这次运行的数据生成 lcov。.config/nextest.toml（新）：fail-fast = false，一次报告所有失败；跑过 60 秒的测试标为SLOW，跑过 10 分钟的被终止并记为TIMEOUT，挂住的测试会在 CI 步骤的 25 分钟上限之前失败并在日志里留下名字。ci.yml：CARGO_NEXTEST_VERSION: 0.9.151，用同一个taiki-e/install-action（已钉 SHA，其清单里有 0.9.151）预编译安装。AGENTS.md、docs/runbook.md：挂住的测试现在看SLOW/TIMEOUT，不再是 libtest 的 "running for over 60 seconds"。本机结果（32 核，构建已缓存）
cargo llvm-cov）cargo llvm-cov nextest）profraw 文件 2311 个，共 796 MB。
make verify（4573d07b）overall_exit=0，门禁 279 秒；rebase 到 #247 之后无冲突。保留还是关闭
这次 PR 的 CI 运行（
verify-rust-log）同时满足下面几条才合并，否则关闭这个 PR：test result:合计一致；rust-coverage的secs=不超过 562（最近 5 次main的中位数 682 减 120）；CI Success与Release candidate都通过。Verification
make verify（4573d07b）：overall_exit=0actionlint .github/workflows/ci.yml.github/scripts/check-no-production-hosts.sh)风险与回退
只改 CI 跑 Rust 测试的方式，产品代码不变。每个测试一个进程后，依赖同一进程里共享状态的测试会暴露出来；本机全量跑过，没有这类失败。回退就是还原这次提交。