feat(_checks-rs): default dev-profile debuginfo to line-tables-only#112
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Full debuginfo dominates cargo target size (~58 of 61 GB on the kunobi-frontend workspace) and is the main driver of the runner-pool ephemeral-storage evictions on builder1. line-tables-only keeps file:line backtraces at a fraction of the disk, and shrinks the kache store and S3 transfer along with target/. Applied to clippy/test/integration-build/build steps via a new rust_debuginfo input (default line-tables-only, 'full' restores the cargo default). The coverage step is exempt: tarpaulin manages its own debuginfo flags.
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Why
CI jobs on builder1 are being killed by kubelet ephemeral-storage evictions (
runner has received a shutdown signal, ~11 kills across 5 PRs on 07-15→17). Root cause analysis showed a singlers-checksjob writes ~100+ GB of pod scratch, and full debuginfo is the dominant term: on the kunobi-frontend workspace, 58 of 61 GB oftarget/is debug artifacts.What
rust_debuginfoinput (defaultline-tables-only) applied asCARGO_PROFILE_DEV_DEBUGon the clippy / test / integration-build / build steps, mirroring the existingCARGO_INCREMENTALpattern.line-tables-onlykeeps file:line in panics/backtraces at a fraction of the disk;fullrestores cargo's default per repo if ever needed.Side benefits: the kache store (populated by byte-copy on ext4 runners) and S3 cache transfer shrink proportionally.
Note: consumer repos pin
@v8— the floating tag needs to move after merge. First builds after rollout are cold (cache keys change with the compiler flags).Verification
yaml.safe_loadpasses.CARGO_INCREMENTALpattern.