From flaky Axiom CI to a Velox bug fix: a cross-repo debugging story
· 9 min read
TL;DR
When adding macOS CI to Axiom, set operation tests kept failing intermittently — but only in macOS debug CI. Linux CI (debug and release) passed consistently. Local runs always passed. The root cause turned out to be a bug in Velox — a dependency managed as a Git submodule. This post describes the process of debugging a CI-only failure when the bug lives in a different repository.