Nightly Windows test shards fail on temp-path spelling (RUNNER~1 vs canonical \\?\ paths)
维护者通常 1 天内回复
评估
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 新手友好度
- 55/100
调研方向
Start by reading the failing tests named in the nightly logs: governing_root.rs:3320, get_failure_paths.rs:1660, and uv.rs:2389, then inspect the shared temp directory constructors used by those suites. Reproduce on Windows and compare the test expectations with the paths returned by the code. Done means the Windows nightly shards pass reliably with path comparisons that handle canonical prefixes, short names, and separators.
由索引模型根据 Issue 内容生成。
描述
[agent] The full-scope nightly's Windows test shards failed on 2 of the last 3 nights. A different test fails each night, and every failure we could read compares one temp path in two different spellings.
2026-10-23, run 39907645034 (aa69125)
test (windows-latest, 1),-p socket-patch-core --lib:hosted::governing_root::tests::vlt_project_root_governs_unlisted_directories(governing_root.rs:3320). The message names the same temp dir asC:\Users\RUNNER~1\AppData\Local\Temp\.tmpnPw8bm\tools/x(8.3 short name, mixed separators) and as\\?\C:\Users\unneradmin\AppData\Local\Temp\.tmpnPw8bm(canonical, verbatim prefix).- Same job,
-p socket-patch-cli --test user_patches: also failed. The test name isn't recoverable from the session's log access (the log is too long to tail). test (windows-latest, 2),-p socket-patch-cli --test get:get_failure_paths::engine_nested_apply_preserves_conflicts_introduced_during_fetch(get_failure_paths.rs:1660),assert!(skip["reason"]...contains(patch.to_str())). This is a substring check of a raw tempdir path against a message that probably carries the canonical one.
2026-10-22, run 39730006970 (3b6a85c)
test (windows-latest, 1),-p socket-patch-core --lib:patch::redirect::upstream::uv::tests::global_uv_settings_reads_the_user_then_first_system_file(uv.rs:2389). left["…\.tmp1nilbo\xdg\uv\uv.toml"], right["…\.tmp1nilbo\xdg/uv/uv.toml", "…\.tmp1nilbo\dirs2/uv/uv.toml"].
2026-10-21 (39551481612) was green.
Likely shared cause (needs confirming): tests build expected paths from tempfile paths (RUNNER~1 8.3 form, / joins in format strings) and compare them by string or substring with paths the code canonicalized (\\?\C:\Users\<long name>). Whether a runner's %TEMP% comes back in 8.3 form seems to vary between images and runs, so it fails intermittently. A fix in the test harness would canonicalize test tempdirs once, e.g. with a dunce::canonicalize-style helper in the tempdir constructors the suites share, and build expected paths with Path::join, not format!("{}/…").
This doesn't affect PR or merge-queue CI (lean scope has no Windows), only the nightly.
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