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…Info() fails spawnBun called os.userInfo() for every test file. On the bare macOS minis the nightly cleanup daemon reboots the host at 06:27 local time under a running job, and once opendirectoryd is down the lookup throws `uv_os_get_passwd returned ENOENT`. The runner then exited 1 mid-shard, which Buildkite records as a test failure instead of a lost agent, so the job was not retried.
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Status: ready for review at c18cdbc. CI build 113857 is green for this diff on every lane. Its one red job is Reproduction: the job log of build 113713 ( |
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Included review availability: Your plan provides up to 10 included reviews per hour; 1 remains after this review. WalkthroughChangesThe runner now uses cached user information with environment fallback when User information fallback
Suggested reviewers: Merge Risk: ⚪ Minimal · up to Caching user information with environment fallback keeps scheduled-reboot agents retryable, while disappearing test files fail only their own step instead of the whole shard. No concrete merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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In `@test/internal/runner-user-info.test.ts`:
- Around line 33-37: Update the test to exercise the spawnBun() integration path
through scripts/runner.node.mjs rather than importing getUserInfo() directly
from main.mjs. Run a minimal child test with the failing preload, assert the
spawned Bun process receives the fallback USER and HOME values, and verify the
runner exits successfully.
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scripts/runner.node.mjsscripts/utils.mjstest/internal/runner-user-info.test.ts
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LGTM — small, well-contained hardening of the CI runner scripts.
What was reviewed:
getUserInfo()inscripts/utils.mjs: cache is process-lifetime and keyed on nothing that varies,getEnv(..., false)is the correct non-throwing form, and the Windows env-var fallbacks (USERNAME/USERPROFILE) are covered.getUsername()return-type widening tostring | undefined: only caller isprintEnvironment'sconsole.log, which handles undefined fine.spawnBun: on the double-fallback (env vars also absent)USER/HOMEbecome undefined inbunEnv— strictly better than the previous throw, and the target scenario (macOS agent) always has them set.- Test follows harness conventions:
tempDir,await using, concurrent pipe drain, output asserted before exit code,test.skipIf(!node)for the required Node binary.
Extended reasoning...
Overview
This PR touches only CI tooling: scripts/utils.mjs gains a cached getUserInfo() helper that wraps os.userInfo() with a one-time call and an env-var fallback (USER/LOGNAME/USERNAME, HOME/USERPROFILE) when the passwd lookup throws; getUsername() is rewired to it and its JSDoc widened to string | undefined. scripts/runner.node.mjs's spawnBun swaps its per-test-file os.userInfo() call for the cached helper. A new test at test/internal/runner-user-info.test.ts runs the helper under Node with a --import preload that stubs os.userInfo() to throw, and asserts the fallback values, caching (same object reference across calls), single underlying call, and the warning on stderr.
Security risks
None. This is internal CI orchestration code, not shipped in the bun binary. No user-controlled input flows into anything sensitive; the only new data source is the process's own environment variables, which the runner already spreads wholesale into the child env (...process.env) a few lines above. No auth, crypto, or filesystem-path construction from untrusted data is involved.
Level of scrutiny
Low-to-moderate. The change is ~30 lines of straightforward defensive code in a Node-run CI script, with a clear failure mode (documented ENOENT from getpwuid_r during macOS shutdown) and a conservative fix (cache + env fallback + warn). It does not touch src/, native code, or any user-facing runtime surface. No CODEOWNERS entry covers scripts/ or test/internal/. The bug-hunting pass ran to a dry streak with no findings.
Other factors
I checked downstream callers of getUsername() for the widened return type — the only call site is printEnvironment's console.log("Username:", ...), which is fine with undefined. In spawnBun, if both the passwd lookup and the env vars are absent, USER/HOME in the constructed bunEnv become undefined; that's still strictly better than the pre-PR behavior (uncaught throw ending the shard), and the motivating environment always exports these. The new test adheres to the repo's harness conventions (REVIEW.md / CLAUDE.md): tempDir, bunEnv spread, await using on the spawned process, Promise.all draining of stdout/stderr/exited, content assertions before exitCode, test.skipIf(!node) for the external Node dependency, and it exercises the actual observable (JSON output + stderr warning) rather than timing.
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Updated 7:22 AM PT - Sep 10th, 2026
❌ @robobun, your commit c18cdbc has 1 failures in 🧪 To try this PR locally: bunx bun-pr 42174That installs a local version of the PR into your bun-42174 --bun |
…t only getUserInfo()
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LGTM — the second fixture file addresses the earlier note, so the os.userInfo() calls: 1 assertion now distinguishes the cached lookup from a per-file one.
What was reviewed: the getUserInfo() cache and env fallback in scripts/utils.mjs (getEnv's required=false semantics, POSIX+Windows env var coverage, warn-not-swallow on failure); getUsername() rewired through the same path and its return type loosened; spawnBun no longer calling os.userInfo() per file; the test's two-file setup, preload via syncBuiltinESMExports, pipe draining via Promise.all, and output-before-exit-code ordering.
Extended reasoning...
Overview
This PR touches CI tooling only: scripts/runner.node.mjs swaps a direct per-file os.userInfo() call for a new cached getUserInfo() helper in scripts/utils.mjs, which falls back to USER/LOGNAME/USERNAME and HOME/USERPROFILE with a console.warn when the passwd lookup throws. getUsername() is rewired through the same helper. A new integration test at test/internal/runner-user-info.test.ts copies the runner scripts into a temp dir, runs them under real Node with a --import preload that makes os.userInfo() throw and count calls, and asserts the fallback warning, the propagated env values in both spawned test files, a single lookup call, and a zero exit.
Security risks
None. The change is confined to the CI test-driver script and its utilities; it reads a handful of well-known environment variables and does not touch runtime, network, auth, or crypto paths. No new external inputs are introduced.
Level of scrutiny
Low-to-moderate. This is infrastructure hardening for a well-diagnosed macOS shutdown race, not user-facing runtime behaviour. The fix is small (cache + try/catch + env fallback), the failure mode it addresses is clearly documented in the JSDoc, and the fallback path warns rather than swallowing — satisfying REVIEW.md's "never swallow a failure" rule. getEnv(name, false) was checked to confirm it returns undefined rather than throwing, so the fallback chain is safe even when none of the env vars are set.
Other factors
The prior review's one optional finding — that the calls: 1 assertion was vacuous with a single fixture under --quiet — was addressed in the latest commit by adding a second fixture (test/first.test.ts + test/second.test.ts) so spawnBun runs twice while the counter must still read 1. The test follows harness conventions (tempDir, bunEnv/bunExe, await using, concurrent pipe draining, output asserted before exit code, test.skipIf(!node) when Node is unavailable). No CODEOWNERS entries cover scripts/ or test/internal/. No outstanding CHANGES_REQUESTED reviews; the coderabbit threads were commented-only and followed by fix commits. Exit reason was dry_streak.
… instead of ending the run; shrink the test to a unit check
runTests read each node test file with readFileSync() outside its step.
When the checkout is wiped under the run, that throw ended the shard
with exit 1, the same way the os.userInfo() call did. The read now
yields an empty string and the step fails on the missing file with
bun's own error.
The test is now an in-process check of getUserInfo() through
mock.module("node:os"), in the style of runner-junit.test.ts, instead
of a copy of the runner under node.
…ther read errors still throw
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LGTM — the readFileSync catch now maps only ENOENT to the benign path and rethrows everything else, which was my last remaining concern.
Checked: getUserInfo() cache + env fallback chain covers POSIX and Windows vars; the spawnBun call site and getUsername() both route through it and the orphaned userInfo import is removed. The test now calls getUserInfo() three times so calls === 1 genuinely proves memoization (earlier vacuous-assertion concern addressed), and the mock is restored in finally.
Extended reasoning...
Overview
This PR touches CI tooling only: scripts/utils.mjs gains a cached getUserInfo() with an env-var fallback for when os.userInfo() throws (macOS opendirectoryd gone during host shutdown), scripts/runner.node.mjs routes spawnBun through it and wraps the per-node-test readFileSync so an ENOENT on a wiped checkout fails only that test's step instead of aborting the whole shard, and test/internal/runner-user-info.test.ts covers the fallback and caching via mock.module("node:os").
Security risks
None. This is internal CI orchestration script code, not shipped runtime. No user-controlled input reaches new code paths; the env-var fallback reads the runner's own process environment.
Level of scrutiny
Low-to-moderate. Small, self-contained defensive change to non-shipped infrastructure. Two prior review rounds raised (1) a vacuous cache-count assertion and (2) a blanket catch {} on the file read; both are now fixed in code — the test invokes getUserInfo() multiple times so the count distinguishes cached from uncached, and the catch rethrows anything that isn't ENOENT, matching REVIEW.md's "map only the specific expected errno to the benign path".
Other factors
The env fallback chain (USER/LOGNAME/USERNAME, HOME/USERPROFILE) covers both POSIX and Windows agents. The dead userInfo import in runner.node.mjs is removed. cachedUserInfo is module-level but nothing populates it at import time, so the test's mock takes effect before the first call. No outstanding CHANGES_REQUESTED from other reviewers; all prior threads correspond to code that has visibly changed to address them.
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Closing: #43595 converted |
1 participant
Problem
SystemError [ERR_SYSTEM_ERROR]: uv_os_get_passwd returned ENOENTatspawnBun(scripts/runner.node.mjs:1765), which calledos.userInfo()per test file. Builds 113713, 112842, 112537, 104623.com.buildkite.cleanupLaunchDaemon fromscripts/agent.mjs:217-240(scripts/agent.mjs: macOS launchd install + start support #29672). At 06:27 local time it wipesbuilds/*on the bare minis and runsshutdown -r nowunder the running job. Once shutdown stops opendirectoryd,getpwuid_rfinds no entry.getRetry()does not retry.Fix
getUserInfo()inscripts/utils.mjscallsos.userInfo()once and caches it. If the call throws, it usesUSER/LOGNAME/USERNAMEandHOME/USERPROFILEand warns.spawnBunandgetUsername()use it.runTestsread each node test file outside its step. A file that is gone now fails its step instead of ending the run. These are the two throws the wipe reaches.agent.mjs installon each mini. Supersedes runner: survive a failed os.userInfo() lookup and a vanished node test file instead of ending the shard #40293.test/internal/runner-user-info.test.ts, and the runner under node withos.userInfomade to throw (Notes). Self-reviewed: 2 concerns raised, 2 addressed.Background
scripts/runner.node.mjsis the CI test driver. It runs under node and spawns onebun testper file throughspawnBun.os.userInfo()is libuv'suv_os_get_passwd, agetpwuid_rcall. On macOS opendirectoryd serves it.getRetry()in.buildkite/ci.mjsretries a job whose agent dropped the connection (exit_status: -1).@alii @dylan-conway: two calls are yours. Whether the runner keeps this once #40349 lands, and who redeploys the 13 minis.
Notes
Timing. Every darwin
test-bunjob that failed this way, with the host from the job's agent record and the finish time in UTC:The agent name
darwin-aarch64-26.6.1-1is shared by crouton, breadstick and biscuit, anddarwin-x64-14.8.9-1by eight x64 minis, which is why the reports looked like one box failing twice at a time. The two-1rows are the same incident where the kill reached the agent before the runner reached its nextuserInfo()call. Those jobs were retried and the retries passed. That is the outcome this PR makes the normal one.On the host.
ssh root@darwin-arm64-crouton, 15 minutes after build 113713's shard died:In the job log the wipe shows first (
Test filter ".../abort.test.ts" had no matchesat 05:27:03, the file was gone), then the passwd failure at 05:27:23 when shutdown had stopped opendirectoryd.Runner repro without a Mac. Copy
scripts/{runner.node,utils,p-limit,yocto-queue}.mjs,test/docker/prestart-map.mjsandtest/leaksan.suppinto a directory with atest/*.test.tsfile, then run the copy under node with a preload that replacesos.userInfo(throughmodule.syncBuiltinESMExports()) with a function that throws:With
scripts/from main this exits 1 at the first test with the stack from the CI log (at spawnBun (runner.node.mjs:1765:33),at spawnBunTest (2007:48),at runTest (696:24)). With this branchos.userInfo()is called once, every file runs withUSERandHOMEfrom the environment, and the run ends normally. For the read site, addtest/js/node/test/parallel/test-gone.jsand a bun test that deletes it: main dies atreadFileSync ... at runOneTest (runner.node.mjs:847:29)before the node test's step, this branch reportstest-gone.js - code 1and runs the rest. The agent environment on the minis hasUSER=administrator LOGNAME=administrator HOME=/Users/administrator, the same values the passwd entry has.The test. An earlier revision ran the copied runner under node from the test itself. That was cut back to an in-process check of
getUserInfo()throughmock.module("node:os"), in the style ofrunner-junit.test.ts, after a similar harness was removed from #40349 in review. The repro above covers the runner end to end.What remains.
mkdtempSyncinspawnBunwould throw if the temporary directory itself vanished. The wipe removes/tmp/*, not/tmp, so it does not.[auto-merge] gate passed · iteration 1 · 3 files touched
passes on PR (with fix)
diff hotspot
gate history · 2 passed · 0 rejected · iteration 1
evidence per changed file