ci(test): free runner disk space before the unit-test build (fixes ENOSPC on main)#6089
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The `Test / Unit (lib+bin)` job's full-run path runs `cargo nextest run --workspace -E 'kind(lib) | kind(bin)'`, which debug-compiles every lib+bin target in the workspace — including librefang-desktop's large static archive — on an ubuntu-latest runner that leaves only ~14 GB free. The build overruns the disk and the link step dies with "No space left on device" (`rustc-LLVM ERROR: IO failure on output stream`), failing the job before a single test runs. Add a Free-runner-disk-space step (after checkout) that removes preinstalled toolchains this job never uses — dotnet, Android SDK, GHC, CodeQL, docker images — reclaiming ~25 GB. This mirrors the fix the nix-build job received in #6081; that PR only touched nix-build.yml, leaving the Unit job exposed. Verified: ci.yml still parses as valid YAML.
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June 11, 2026 13:29
The comment block added in this PR was hard-wrapped at ~72 characters, splitting sentences across lines. CLAUDE.md requires prose line breaks only at sentence boundaries.
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…fixes ENOSPC on main) (#6112) * ci(test): free runner disk space before the integration shard build (fixes ENOSPC on main) The `Test / Ubuntu (shard N/4)` job's full-run path runs `cargo test --workspace --no-run`, which debug-compiles every workspace test binary — each `tests/*.rs` is its own executable, plus dev-dependencies and librefang-desktop's large static archive — on an ubuntu-latest runner that leaves only ~14 GB free. All four full-run shards do this same heavy build, so the disk sits at the margin: shard 1/4 overran it on main and the runner died with "No space left on device" mid-build, before any test ran. Add a Free-runner-disk-space step (gated on the same selective-lane skip as the rest of the job) that removes preinstalled toolchains this job never uses — dotnet, Android SDK, GHC, CodeQL, docker images — reclaiming ~25 GB. This extends the same fix the unit-test job got in #6089 and nix-build got in #6081 to the integration shard lane, the last full-workspace Ubuntu build still exposed. Verified: ci.yml still parses as valid YAML. * ci(test): trim integration-shard disk-free comment to one line Two-line comment block condensed to one short line per project style rules. The PR body carries the full context; inline comments reference only the non-obvious constraint (disk headroom). --------- Co-authored-by: Evan <[email protected]> Co-authored-by: Claude <[email protected]>
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Problem
Test / Unit (lib+bin)failed on the push-to-main run after #6083 merged — not a test failure, a disk-full failure:The job's full-run path is
cargo nextest run --workspace -E 'kind(lib) | kind(bin)', which debug-compiles every lib+bin target in the workspace (includinglibrefang-desktop's large static archive).ubuntu-latestleaves only ~14 GB free, the build overruns it, and the linker dies before any test runs.The job had no disk-cleanup step.
#6081 already added exactly this cleanup to the nix-build job, but it only touched
nix-build.yml— the Unit job stayed exposed and is the one that just took down main.Fix
Add a
Free runner disk spacestep (right after checkout) to the Unit job, identical to #6081's: delete preinstalled toolchains the job never uses (dotnet, Android SDK, GHC, CodeQL, docker images), reclaiming ~25 GB before the build, and printdf -h /before and after so the reclaimed space shows in the log.Scope / notes
Verification
ci.ymlstill parses as valid YAML (python -c "import yaml; yaml.safe_load(...)").nix-build.yml(ci(nix-build): librefang-cli job repeatedly fails with 'Nix daemon disconnected unexpectedly' (runner disk exhaustion) #6081), which has been exercising it on the same runner image.