Execution Worker is in the Failed state now due to an exception, execution will be retried no more than in 00:00:04

[sampsonye]

System.InvalidOperationException: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
at System.Collections.Generic.HashSet`1.Contains(System.Collections.Generic.T item)
at Hangfire.Redis.RedisLock.Acquire(StackExchange.Redis.IDatabase redis, StackExchange.Redis.RedisKey key, System.TimeSpan timeOut, System.TimeSpan holdDuration)
at Hangfire.Redis.RedisLock.Acquire(StackExchange.Redis.IDatabase redis, StackExchange.Redis.RedisKey key, System.TimeSpan timeOut)
at Hangfire.Redis.RedisConnection.AcquireDistributedLock(System.String resource, System.TimeSpan timeout)
at Hangfire.Storage.StorageConnectionExtensions.AcquireDistributedJobLock(Hangfire.Storage.IStorageConnection connection, System.String jobId, System.TimeSpan timeout) at offset 28
at Hangfire.States.BackgroundJobStateChanger.ChangeState(Hangfire.States.StateChangeContext context)
at Hangfire.Server.Worker.TryChangeState(Hangfire.Server.BackgroundProcessContext context, Hangfire.Storage.IStorageConnection connection, Hangfire.Storage.IFetchedJob fetchedJob, Hangfire.States.IState state, System.String[] expectedStates, System.Threading.CancellationToken initializeToken, System.Threading.CancellationToken abortToken) at offset 258
at Hangfire.Server.Worker.Execute(Hangfire.Server.BackgroundProcessContext context)
at Hangfire.Server.BackgroundProcessDispatcherBuilder.ExecuteProcess(System.Guid executionId, System.Object state) at offset 123
at Hangfire.Processing.BackgroundExecution.Run(System.Action`2 callback, System.Object state) at offset 69

[marcoCasamento]

Hi, I'm planning to look at this (and others), how to repro ? hangfire ver ?