chore(buglog): log bug-1895 (apiserver Go test failures do not fail xce-build.sh)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.wolf/bugs/bug-1895.md

@@ -0,0 +1,55 @@
+---
+id: "bug-1895"
+status: "open"
+status_updated: "2026-09-30"
+status_note: "newly logged"
+component: "build"
+severity: "wrong-result"
+timestamp: "2026-09-30T04:23:48Z"
+last_seen: "2026-09-30T04:23:48Z"
+occurrences: 1
+files: ["src/tools/xce-build.sh (apiserver and all test steps)"]
+tags: ["build", "xce-build", "go", "tests", "set-e"]
+related: ["bug-1894"]
+---
+
+# bug-1895: xce-build.sh apiserver/all: a failing apiserver Go test does not fail the build
+
+## Description
+**Observed:** `bash src/tools/xce-build.sh apiserver asan <dir> --incremental` exited 0 although its Go unit tests failed:
+```
+FAIL	apiserver/backend [build failed]
+FAIL	apiserver/store [build failed]
+... exit=0
+```
+**Expected:** a failing unit test fails the build (non-zero exit), as for every C suite.
+**Impact:** apiserver Go test failures are silently ignored by /xce-build (and by `all`); a regression in apiserver/store, utils, controllers or backend can pass the build unnoticed. xcecli's tests are unaffected when they are the ones failing, but are skipped entirely when the apiserver tests fail.
+**Found by:** review of the build output while doing bug-1894's RED step, 2026-09-29.
+
+## Environment
+- OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
+- libc: glibc 2.42-47 (the nix dev shell's bash running xce-build.sh; the Go tests themselves run CGO_ENABLED=0)
+- Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
+- Build: asan profile (apiserver component, --incremental), src/xce.build.bug1871
+- Code: scheduler-framework @ 141ac22c-dirty
+- Deployment: n/a -- local build script
+
+## Reproduction
+1. Make any apiserver Go test fail (e.g. reference an undefined symbol in a _test.go under src/frontend/apiserver/backend).
+2. `bash src/tools/xce-build.sh apiserver asan <dir> --incremental; echo $?` -> prints the FAIL lines, then exits 0.
+- Frequency: deterministic -- 1/1, 2026-09-29 (bug-1894's RED run)
+- Evidence: the mechanism is in src/tools/xce-build.sh lines ~390 and ~437: `cd frontend/apiserver && go test ... && cd ../xcecli && go test ...` under `set -euo pipefail`; bash's errexit ignores a failure of any command in an && list except the last, so a failing apiserver `go test` just short-circuits the list and the script carries on to exit 0
+
+## Root cause
+TODO: required for fixed/partial
+
+## Fix
+TODO: required for fixed/partial
+
+## Verification
+- Test: TODO: name + file; RED before the fix, GREEN after
+- Suites: TODO: suite results and build profile
+- Live: TODO: soak/deploy run, or n/a and why
+
+## References
+- Related: none