Bun's EFAULT on concurrent rmSync

quest/m1/bun-efault.md

@@ -2,31 +2,35 @@
 
 ## Goal
 
-oven-sh/bun has a report for `rmSync(file, { force: true })` throwing
-`EFAULT` on Windows when two processes remove the same file at once. Node
-throws `EPERM` there. Once a Bun release fixes it and Quest's pin includes
-that release, `remove()` in `src/cli/gate.ts` stops tolerating `EFAULT`, and
-this quest is deleted.
+Bun no longer throws `EFAULT` from `rmSync(file, { force: true })` on Windows
+when two processes remove the same file at once (Node throws `EPERM`). Once a
+Bun release fixes it and Quest's pin includes that release, `remove()` in
+`src/cli/gate.ts` stops tolerating `EFAULT`, and this quest is deleted.
 
 ## Plan
 
-Decided 2026-10-28 (user, /quest-plan of the follow-ups from a 25-PR /quest-complete run). Posting the report to oven-sh/bun is approved.
-
 - [moq-dev/quest#233](https://github.com/moq-dev/quest/pull/233) found the
   race and worked around it. Its diagnostic runs have the minimal repro: two
   processes `rmSync` the same file on `windows-11-arm` and `windows-2022`.
-- Search existing Bun issues first, and comment on a match instead of opening
-  a duplicate. As of 2026-11-02 nobody from moq-dev has commented or opened
-  one. The closest reports are
-  [oven-sh/bun#39708](https://github.com/oven-sh/bun/issues/39708), the
-  recursive case, with its fix
-  [oven-sh/bun#39710](https://github.com/oven-sh/bun/pull/39710), and the
-  single-file fix
-  [oven-sh/bun#38550](https://github.com/oven-sh/bun/pull/38550); all three
-  are open.
+- Reported upstream on 2026-11-14 (approved by the user, 2026-10-28) as a
+  [comment with the Windows repro and counts](https://github.com/oven-sh/bun/issues/48811#issuecomment-6882793150)
+  on [oven-sh/bun#48811](https://github.com/oven-sh/bun/issues/48811), the
+  report filed 2026-11-13 that matches this exactly but had no Windows run.
+- The fix to wait for is
+  [oven-sh/bun#48816](https://github.com/oven-sh/bun/pull/48816), open: it makes
+  non-recursive `rm` report the errno `unlink` returned, so the losing caller
+  gets `EPERM` as in Node. `remove()` already tolerates `EPERM`, so only the
+  `EFAULT` entry goes.
+- The recursive case is
+  [oven-sh/bun#39708](https://github.com/oven-sh/bun/issues/39708) with its fix
+  [oven-sh/bun#39710](https://github.com/oven-sh/bun/pull/39710), both open.
+  [oven-sh/bun#38550](https://github.com/oven-sh/bun/pull/38550), the earlier
+  single-file fix, closed unmerged on 2026-11-13.
 
 ## Waiting
 
-- oven-sh/bun: a release fixes `rmSync` throwing `EFAULT` when two processes
-  remove one file on Windows, and Quest's pin includes it. Check the report
-  and the fix PRs above each time ready work is triaged.
+- oven-sh/bun: a release carries a fix for
+  [oven-sh/bun#48811](https://github.com/oven-sh/bun/issues/48811) (likely
+  [oven-sh/bun#48816](https://github.com/oven-sh/bun/pull/48816)), and Quest's
+  pin includes it. Check the issue and the fix PR each time ready work is
+  triaged.