Bugfix: Fix rare failures to retry locking a repository Restic 0.17.0 could in rare cases fail to retry locking a repository if one of the lock files failed to load, resulting in the error: ``` unable to create lock in backend: circuit breaker open for file ``` This issue has been addressed. The error handling now properly retries the locking operation. In addition, restic waits a few seconds between locking retries to increase chances of successful locking. https://github.com/restic/restic/issues/5005 https://github.com/restic/restic/pull/5011 https://github.com/restic/restic/pull/5012