Squashed commit of the following:

commit f84e8f7
Merge: 1741ed2 5feb171
Author: crusaderky <crusaderky@gmail.com>
Date:   Tue May 31 00:40:28 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit 1741ed2
Merge: 7a0debe dea9ef2
Author: crusaderky <crusaderky@gmail.com>
Date:   Wed May 25 17:45:56 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit 7a0debe
Merge: fb1aefe d32f4b0
Author: crusaderky <crusaderky@gmail.com>
Date:   Tue May 24 16:51:47 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit fb1aefe
Merge: 5e2c5a0 30a872f
Author: crusaderky <crusaderky@gmail.com>
Date:   Tue May 24 15:52:29 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit 5e2c5a0
Merge: 02e4193 9bb999d
Author: crusaderky <crusaderky@gmail.com>
Date:   Sat May 21 21:18:59 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit 02e4193
Merge: 83c07f4 fb3589c
Author: crusaderky <crusaderky@gmail.com>
Date:   Fri May 20 12:36:07 2022 +0100

    Merge branch 'main' into WSMR/retry_busy_worker

commit 83c07f4
Author: crusaderky <crusaderky@gmail.com>
Date:   Thu May 19 16:31:13 2022 +0100

    Refactor busy_worker reinsertion
Merge branch 'main'

Conflicts:
	distributed/worker.py