[Intermittent] Sync error encountered for a new Firefox account

[vasilicatamas]

Build:
FxA Stage [Train 1.151.0]

Affected platforms:
Windows 10 64-bit

Affected versions:
Firefox 70.0.1

Steps to reproduce:

1. Launch Firefox and click on the FxA toolbar menu button.
2. Type a new email address which does not have associated a Firefox Account and click “Continue” button
3. Fill with valid credentials all the fields and select a few sync options (bookmarks, history) in registration form
4. Complete the account creation flow.
5. Add a few bookmarks and gather some browsing history.
6. Perform a sync.
7. Login using the same account on a new profile/device and check the sync data.

Expected results:
Selected type of data is successfully synced.

Actual Results:

• Sync is not performed.
• A sync error is encountered.
• All sync preferences seem to be check when log ing on a new device.

[Additional notes]:

• This issue is intermittent.
• This issue was not encountered on FxA Prod [150.0.9]
• I am attaching 2 sync error log received for 2 different users.

stageuser25.txt
stageuser37.txt

• Attaching a screenshot with about:preferences#sync pages from 2 profiles.
  

[tublitzed]

Hey, @vasilicatamas - to confirm, you're using a Durable Sync account in staging?

Also, it looks like the error logs provided aren't actually the logs we need. Can you head over to about:sync-log and attach the error logs you see there?

[vasilicatamas]

Hey, @vasilicatamas - to confirm, you're using a Durable Sync account in staging?

No, I was not using a durable sync account.

Also, it looks like the error logs provided aren't actually the logs we need. Can you head over to about:sync-log and attach the error logs you see there?

I will attach a few error files, for both profiles from the above screenshot:

• profile 1:
  profile1error1.txt
  profile1error2.txt
  profile1error3.txt
  profile1error4.txt

• profile 2:
  profile2error1.txt
  profile2error2.txt

Please let me know if you need any other details.

[mhammond]

The logs are full of NS_ERROR_NET_TIMEOUT errors hitting sync-1-us-east-1.stage.mozaws.net - is there something wrong with that storage node?

[tublitzed]

@vasilicatamas

No, I was not using a durable sync account.

Ah, ok. So, this repo is specifically for Durable Sync. I'm going to move this bug into the other codebase.