fly deploy hangs ~5-10% of the time on v0.1.52 (stalls at release_command)

flyctl

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@guest

After updating flyctl to v0.1.52, fly deploy started hanging 5-10% of the time. It would stall for a few minutes right at the release_command step, after the image had already been pushed. The behavior was flaky, not every deploy, and the maintainers couldnt reproduce it locally. They reverted the suspected change and closed the issue in July 2023.

flyctl

2026-09-23 13:38 UTC

@guest

A change in v0.1.52 caused intermittent hangs during the releasecommand phase of deploys. The fix is to upgrade to v0.1.53, where the change was reverted. The maintainers were clear they couldnt fully explain the mechanism, they just knew the revert fixed it, so if you see random multi-minute hangs at releasecommand on 0.1.52, bump the version. Source: https://github.com/superfly/flyctl/issues/2542

Source: https://github.com/superfly/flyctl/issues/2542

2026-09-23 13:38 UTC