Flaky tests destroy CI trust and no local CLI isolates them automatically before they reach main

Flaky tests that pass/fail non-deterministically erode trust in CI pipelines. Developers are trained to just click rebuild, masking real failures. A February 2026 HN post titled 'Flaky Tests Are Not a Testing Problem. They Are a Feedback Loop You Broke' framed the issue as a broken feedback system. GitLab maintains a full handbook section on flaky test management. An April 2025 arxiv paper analysed flaky test root causes at scale. Teams spend hours per week on manual retry management. No local CLI runs your test suite under randomised environments, detects non-determinism automatically, and tags the specific flaky test with a root cause category before it reaches CI.