I'm using WorkManager alpha-4 and have converted my app's sync jobs to workers. If the device remains plugged in, the periodic jobs run as expected (approx once an hour as scheduled). However, when taking the device off power, allowing it to go to sleep, after a period of time the workers no longer excecute.

My log contains the following statements at the time when the jobs (there are 4) were supposed to execute:

2018-07-15 13:52:15.456 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id 5caee77a-e9c5-4a99-bc7b-651ad21eb94b. Retry requested
2018-07-15 13:52:15.460 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id e3641a8b-1df8-49b9-8c90-1c893c3afc0f. Retry requested
2018-07-15 13:52:15.464 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id db7c03a2-0fe6-42c4-baf8-0ef6e8220e9b. Retry requested
2018-07-15 13:52:15.465 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id d3efce3a-6aa7-4e10-84af-759f1124ccf5. Retry requested

As you can see from the log entries below, things were running just fine up to that point:

2018-07-15 11:30:02.168 12947-12947/com.dvtonder.chronus D/SystemJobService: 5caee77a-e9c5-4a99-bc7b-651ad21eb94b executed on JobScheduler
2018-07-15 11:30:02.396 12947-12947/com.dvtonder.chronus D/SystemJobService: d3efce3a-6aa7-4e10-84af-759f1124ccf5 executed on JobScheduler
2018-07-15 11:30:03.291 12947-12947/com.dvtonder.chronus D/SystemJobService: e3641a8b-1df8-49b9-8c90-1c893c3afc0f executed on JobScheduler
2018-07-15 11:30:03.292 12947-12947/com.dvtonder.chronus D/SystemJobService: db7c03a2-0fe6-42c4-baf8-0ef6e8220e9b executed on JobScheduler
2018-07-15 11:54:09.377 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for b4303ff7-dd6c-4288-8be2-e859c56cddc5
2018-07-15 11:54:09.383 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for 27c2a27b-4da0-4512-ac60-924fb134addd
2018-07-15 11:54:09.478 12947-12947/com.dvtonder.chronus D/SystemJobService: 27c2a27b-4da0-4512-ac60-924fb134addd executed on JobScheduler
2018-07-15 11:54:10.026 12947-12947/com.dvtonder.chronus D/SystemJobService: b4303ff7-dd6c-4288-8be2-e859c56cddc5 executed on JobScheduler
2018-07-15 12:49:00.838 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for e3641a8b-1df8-49b9-8c90-1c893c3afc0f
2018-07-15 12:49:00.865 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for 5caee77a-e9c5-4a99-bc7b-651ad21eb94b
2018-07-15 12:49:01.136 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for db7c03a2-0fe6-42c4-baf8-0ef6e8220e9b
2018-07-15 12:49:01.548 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for d3efce3a-6aa7-4e10-84af-759f1124ccf5
2018-07-15 12:49:09.589 12947-12947/com.dvtonder.chronus D/SystemJobService: db7c03a2-0fe6-42c4-baf8-0ef6e8220e9b executed on JobScheduler
2018-07-15 12:49:17.334 12947-12947/com.dvtonder.chronus D/SystemJobService: d3efce3a-6aa7-4e10-84af-759f1124ccf5 executed on JobScheduler
2018-07-15 12:49:25.292 12947-12947/com.dvtonder.chronus D/SystemJobService: e3641a8b-1df8-49b9-8c90-1c893c3afc0f executed on JobScheduler
2018-07-15 12:49:42.364 12947-12947/com.dvtonder.chronus D/SystemJobService: 5caee77a-e9c5-4a99-bc7b-651ad21eb94b executed on JobScheduler
2018-07-15 12:50:03.938 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for 7fa7b9d0-4e00-466f-a29d-fcc89d4c5b5d
2018-07-15 12:50:04.015 12947-12947/com.dvtonder.chronus D/SystemJobService: 7fa7b9d0-4e00-466f-a29d-fcc89d4c5b5d executed on JobScheduler
2018-07-15 12:50:32.909 12947-12947/com.dvtonder.chronus D/SystemJobService: onStartJob for 204b2e5e-5e24-466e-bdd7-814ef9a4582b
2018-07-15 12:50:33.329 12947-12947/com.dvtonder.chronus D/SystemJobService: 204b2e5e-5e24-466e-bdd7-814ef9a4582b executed on JobScheduler
2018-07-15 13:52:15.456 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id 5caee77a-e9c5-4a99-bc7b-651ad21eb94b. Retry requested
2018-07-15 13:52:15.460 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id e3641a8b-1df8-49b9-8c90-1c893c3afc0f. Retry requested
2018-07-15 13:52:15.464 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id db7c03a2-0fe6-42c4-baf8-0ef6e8220e9b. Retry requested
2018-07-15 13:52:15.465 12947-12947/com.dvtonder.chronus D/SystemJobService: Override deadline expired for id d3efce3a-6aa7-4e10-84af-759f1124ccf5. Retry requested