workflow unexpected run

[o-mura]

There is the strange behavior about workflow fire.
I confirmed the behavior by the following step.

1. create a new workflow and schedule it (ex. every 5 min).

$ cat sample.dig
schedule:
  minutes_interval>: 5 
  skip_on_overtime: true

+task1:
  echo>: ${session_time}
$ digdag push sample
2021-11-10 14:06:52 +0900: Digdag v0.10.3
Creating .digdag/tmp/archive-1710945669874406031.tar.gz...
  Archiving sample.dig
Workflows:
  sample.dig
Uploaded:
  id: 1
  name: sample
  revision: 11b54a11-63f8-4072-9905-66ffa8fa4464
  archive type: db
  project created at: 2021-11-10T05:07:08Z
  revision updated at: 2021-11-10T05:07:08Z

Use `digdag workflows` to show all workflows.

2. disable workflow schedule after ran one or more session and skip some sessions

> digdag disable sample
2021-11-10 14:10:32 +0900: Digdag v0.10.3
Disabled schedule id: 1

3. reschedule with --skip-to option and enable workflow schedule

> digdag reschedule --skip-to '2021-11-10 14:25:00 +0900'
2021-11-10 14:16:01 +0900: Digdag v0.10.3
  id: 1
  workflow: sample
  disabled at: 2021-11-10 14:10:43 +0900 (5m 29s ago)
  next session time: 2021-11-10 05:25:00 +0000
  next scheduled to run at: 2021-11-10 14:25:00 +0900 (in 8m 47s)

Use `digdag schedules` to show schedules.
> digdag enable sample
2021-11-10 14:16:22 +0900: Digdag v0.10.3
Enabled schedule id: 1
> digdag push sample
2021-11-10 14:17:06 +0900: Digdag v0.10.3
Creating .digdag/tmp/archive-4366420844614961888.tar.gz...
  Archiving sample.dig
Workflows:
  sample.dig
Uploaded:
  id: 1
  name: sample
  revision: 2310e8ed-c9cf-477e-a9b3-43963dc27273
  archive type: db
  project created at: 2021-11-10T05:07:08Z
  revision updated at:2021-11-10T05:17:06Z

Use `digdag workflows` to show all workflows.

4. check sample workflow sessions

> digdag sessions asmple
2021-11-10 14:22:40 +0900: Digdag v0.10.3
Sessions:
  session id: 1
  attempt id: 1
  uuid: 75f32229-607b-4ce4-ade4-be9a2caf6a18
  project: sample
  workflow: sample
  session time: 2021-11-10 05:10:00 +0000
  retry attempt name: 
  params: {"last_session_time":"2021-11-10T05:05:00+00:00","next_session_time":"2021-11-10T05:15:00+00:00"}
  created at: 2021-11-10 14:10:00 +0900
  kill requested: false
  status: success

  session id: 2
  attempt id: 2
  uuid: 95938f6c-16e7-4d06-a399-767104a5540a
  project: sample
  workflow: sample
  session time: 2021-11-10 05:15:00 +0000
  retry attempt name: 
  params: {"last_session_time":"2021-11-10T05:10:00+00:00","next_session_time":"2021-11-10T05:20:00+00:00","last_executed_session_time":"2021-11-10T05:10:00+00:00"}
  created at: 2021-11-10 14:17:06 +0900
  kill requested: false
  status: success

I don't know why this workflow run at 2021-11-10 14:17:06 +0900 (as session time: 2021-11-10 05:15:00 +0000)