Snapcraft 7.1.1 gives vague error when it can't process package
Metadata
Current evaluation
Vague 'Service unavailable' on snapcraft upload. The text originates from the store's processing pipeline, not Snapcraft; Snapcraft already relays store error messages verbatim. Self-resolved for the reporter after `snapcraft clean`; root cause never diagnosed.
Suggested action: close not a bug
Reason: "Service unavailable. Please try again later (d510601fa...)" is emitted by the store's processing backend, not Snapcraft — the string appears nowhere in the Snapcraft codebase. `notify_upload` (snapcraft/store/client.py ~line 661) already surfaces the store's `status["errors"]` messages verbatim via `SnapcraftError(f"Issues while processing snap:\n{error_string}")`, confirmed by the passing test `test_notify_upload_error`, so there is no vague Snapcraft-side message to improve. The reporter's own follow-up concedes resolution ("After a `snapcraft clean`, the build now is processed correctly") and the root cause was never identified, making this a transient store-side failure rather than a Snapcraft defect.
Evaluated by: mr-cal-bot
Impact:
15
Quick Win:
2
Complexity:
30
Confidence:
78
Actionability:
20
Issue body
Snapcraft 7.1.1 gives me a vague error about "Service unavailable. Please try again later" when uploading a snap package. I first thought the Snapcraft Store was down, as the message suggested it had something to do with the service, but I have been getting this error now for more than three days, and I just tried to upload a previous version of the package and this worked.
Command used:
```
snapcraft upload --release=latest/candidate theengs-gateway_0.4.0_amd64.snap
Issues while processing snap:g
- Service unavailable. Please try again later (d510601fa56b4b2cbc13e60d768e2eca).
Full execution log: '/home/koan/.cache/snapcraft/log/snapcraft-20220808-104616.994183.log'
```
Full execution log:
```
2022-08-08 10:46:16.994 Starting Snapcraft 7.1.1
2022-08-08 10:46:17.078 Retrieving credentials for 'snapcraft' on 'dashboard.snapcraft.io' from keyring 'SecretService Keyring'.
2022-08-08 10:46:17.110 HTTP 'POST' for 'https://dashboard.snapcraft.io/dev/api/snap-push/' with params None and headers {'Accept': 'application/json', 'Authorization': '<macaroon>', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:17.350 Uploading... (--->)
2022-08-08 10:46:17.351 Uploading... (<---)
2022-08-08 10:46:17.351 HTTP 'POST' for 'https://storage.snapcraftcontent.com/unscanned-upload/' with params None and headers {'Content-Type': 'multipart/form-data; boundary=61c11bd4790d4d61b455b2dc8e5a28e8', 'Accept': 'application/json', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:19.454 Uploading bytes for 'theengs-gateway_0.4.0_amd64.snap' ended, id 'f0e26408-392c-4e4f-830b-d1e24868a2a9'
2022-08-08 10:46:19.454 Retrieving credentials for 'snapcraft' on 'dashboard.snapcraft.io' from keyring 'SecretService Keyring'.
2022-08-08 10:46:19.514 HTTP 'POST' for 'https://dashboard.snapcraft.io/dev/api/snap-push/' with params None and headers {'Accept': 'application/json', 'Authorization': '<macaroon>', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:19.662 Retrieving credentials for 'snapcraft' on 'dashboard.snapcraft.io' from keyring 'SecretService Keyring'.
2022-08-08 10:46:19.719 HTTP 'GET' for 'https://dashboard.snapcraft.io/dev/api/snaps/WDvYyYNnf1p9CYuMa9uGYCXB6ZqH1EZp/builds/f0e26408-392c-4e4f-830b-d1e24868a2a9/status' with params None and headers {'Authorization': '<macaroon>', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:21.325 Status: processing
2022-08-08 10:46:22.326 Retrieving credentials for 'snapcraft' on 'dashboard.snapcraft.io' from keyring 'SecretService Keyring'.
2022-08-08 10:46:22.367 HTTP 'GET' for 'https://dashboard.snapcraft.io/dev/api/snaps/WDvYyYNnf1p9CYuMa9uGYCXB6ZqH1EZp/builds/f0e26408-392c-4e4f-830b-d1e24868a2a9/status' with params None and headers {'Authorization': '<macaroon>', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:23.563 Status: processing
2022-08-08 10:46:24.565 Retrieving credentials for 'snapcraft' on 'dashboard.snapcraft.io' from keyring 'SecretService Keyring'.
2022-08-08 10:46:24.591 HTTP 'GET' for 'https://dashboard.snapcraft.io/dev/api/snaps/WDvYyYNnf1p9CYuMa9uGYCXB6ZqH1EZp/builds/f0e26408-392c-4e4f-830b-d1e24868a2a9/status' with params None and headers {'Authorization': '<macaroon>', 'User-Agent': 'snapcraft/7.1.1 ubuntu/20.04 (x86_64)'}
2022-08-08 10:46:25.669 Status: error while processing
2022-08-08 10:46:25.670 Issues while processing snap:
- Service unavailable. Please try again later (d510601fa56b4b2cbc13e60d768e2eca).
2022-08-08 10:46:25.670 Full execution log: '/home/koan/.cache/snapcraft/log/snapcraft-20220808-104616.994183.log'
```
I see the message that the snap is being uploaded, but then the processing fails.
Snap-review says "pass" for both versions of the snap.
I'd like to know what causes this, so a more concrete error message why this fails would help me.
The snap is created from https://github.com/theengs/gateway-snap with `snapcraft --enable-manifest` (without `--enable-manifest` has the same behavior).
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| stealth/space-bunny-alpha |
Impact:
15
Quick Win:
2
Complexity:
30
Confidence:
78
Actionability:
20
|
close not a bug | Vague 'Service unavailable' on snapcraft upload. The text originates from the store's processing pipeline, not Snapcraft; Snapcraft already relays store error messages verbatim. Self-resolved for the reporter after `snapcraft clean`; root cause never diagnosed. | |
| stealth/space-bunny-alpha |
Impact:
28
Quick Win:
8
Complexity:
38
Confidence:
58
Actionability:
45
|
needs triage | Snapcraft 7.1.1 upload shows only 'Service unavailable. Please try again later' when the store rejects a snap; author wants a more descriptive error. Resolved for them by `snapcraft clean`, root cause never diagnosed. | |
| stealth/space-bunny-alpha |
Impact:
40
Quick Win:
13
Complexity:
45
Confidence:
87
Actionability:
58
|
needs triage | Snapcraft 7.1.1 reports only a generic service error when uploaded snap processing fails. Current code still extracts only the server message, and the report has no maintainer triage. | |
| qwen/qwen3.8-27b |
Impact:
35
Quick Win:
24
Staleness:
95
Complexity:
30
Confidence:
55
Support Request:
20
|
close stale | Snapcraft 7.1.1 returns a vague 'Service unavailable' error when snap upload processing fails, making it hard for users to diagnose the root cause. No maintainer response or labels; issue is 4 years old. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
95
Complexity:
40
Confidence:
90
Support Request:
25
|
close stale | Reports vague 'Service unavailable' error during snap upload in Snapcraft 7.1.1 and requests better error messaging. Unlabelled and inactive for over 4 years. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
95
Complexity:
30
Confidence:
85
Support Request:
20
|
close stale | Report of vague upload error in Snapcraft 7.1.1 requesting better error messages. Unlabelled, zero maintainer comments, and inactive for over four years. Likely outdated given current Snapcraft versions. | |
| qwen3.6-35b-a3b-mtp-q6 |
Staleness:
95
Complexity:
20
Confidence:
85
Support Request:
10
|
close stale | User reports a vague Service unavailable error during snap upload in version 7.1.1, requesting more concrete error messages. Issue has seen no maintainer interaction in nearly four years. |
Update history
| Date | Change |
|---|---|
| created |
Related issues
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