The new windows-host cache steps reported '::warning::Failed to save' and
nothing ever seeded. actions/cache probes for zstd, doesn't find it, falls
back to gzip — and Git's GNU tar then shells out to a gzip that is not on
the runner daemon's PATH: 'Child returned status 127', 'cache.tgz: Cannot
write: Broken pipe', tar exit 2. Since save failures are warnings, the job
stayed green while caching silently did nothing.
zstd (+ a staged gzip.exe as insurance) now installs into its own directory
— never Git's usr\bin on PATH, which would shadow Windows' find/sort/echo.
Applied live to the runner and added to the machine PATH; this step keeps a
rebuilt runner honest.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Backend = the existing RustFS (storage.unom.io, S3, region home-central;
LAN-pinned to home-central's address by ci-core's unbound so cache traffic
never hairpins the router). Repo secrets SCCACHE_ACCESS_KEY_ID/SECRET carry a
keypair scoped to the unom-ci-sccache bucket; keys embed compiler hash +
target + flags, so the Ubuntu, Fedora, cross-arm64 and MSVC universes share
one bucket without ever colliding.
Wired: ci (rust, rust-arm64), deb (all three), rpm, bench,
linux-client-screenshots, windows, windows-msix, windows-host.
CARGO_INCREMENTAL=0 alongside (sccache and incremental are mutually
exclusive, and incremental artifacts are what bloated the persistent Windows
target dirs anyway). The binary is baked into the builder images; a per-job
ensure-step (same pattern as the GTK4 packages step) keeps jobs green while
the running :latest predates the bake, and ensure-windows-toolchain.ps1
self-provisions sccache.exe on the Windows runner. windows-drivers stays
unwrapped (wdk-build owns its build env), arch/android/apple are follow-ups.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
A full Windows CI pass writes ~50 GB of cargo target output into the shared
C:\t (x64) / C:\t-a64 (arm64) scratch dirs on the intentionally-small (100 GB)
windows-amd64 runner. Left to accumulate across runs, that overflowed the disk
and every build died with "no space on device" (os error 112) — bytemuck_derive,
cc, bindgen, windows, tracing-subscriber, fs4 all failing mid-compile, taking
down pf-vdisplay/host builds.
ensure-windows-toolchain.ps1 already runs first in every Windows job, so reclaim
disk there before provisioning/building: call the runner-baked reclaimer
(unom/infra installs C:\Users\Public\act-runner\clean-runner-disk.ps1 + a
scheduled task) in threshold mode so THIS job starts with headroom regardless of
when that task last ran, and keep incremental caches warm when there's room. A
small inline fallback covers a runner not yet re-baked with the reclaimer. The
whole step is best-effort — a cleanup hiccup never fails the build.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The Windows CI runner (home-windows-runner-1, vmid 210) is now provisioned/owned by
unom/infra and can be rebuilt or joined by additional windows-amd64-labeled runners at
any time - a manually-dispatched provisioning workflow has no way to target a specific
runner instance, so it could land on an already-provisioned box instead of the one that
needed it. Replace windows-drivers-provision.yml / windows-punktfunk-provision.yml with
scripts/ci/ensure-windows-toolchain.ps1, a shared idempotent pre-flight (WDK/cargo-wdk,
FFmpeg, Inno Setup, ARM64 rustup target) that every Windows workflow now runs at job
start - a fast no-op once already provisioned, so any runner self-heals on first real use.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5