# crates.io: Major incident: Increased errors while connecting to crates.io

**Summary:** _summary pending_
## Part of an outage event

- [Heroku outage, Mar 16, 2020: 8 vendors, 9 incidents](https://rewindex.com/events/2020-03-16-heroku)
- This incident blames Heroku as the cause. (hop 1, posted +30 min vs the first vendor naming Heroku)
- Evidence: “…crates.io. We're continuing to monitor the situation, and you can follow the progress on Heroku's status page: https://status.heroku.com/incidents/1973 This incident has been resolved.…”

```mermaid
flowchart LR
  root["Heroku<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>4 vendors, 4 blamed Heroku<br/>RevenueCat, Substack, Bitrise, crates.io"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>1 vendor, 1 blamed Heroku<br/>RevenueCat"]:::blames
  root --> h4
  me["crates.io (this incident)<br/>posted +30 min"]:::me
  h1 --- me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

- Kind: Major incident · Label: major (vendor)
- Changed: 2020-03-16 16:53 UTC · Detected: 2026-10-19 17:33 UTC
- [Source: http://stspg.io/f81wlwgxmjzl](http://stspg.io/f81wlwgxmjzl)
- [Company: crates.io](https://rewindex.com/company/crates-io.md)
- Versions: before (none: first archived) → after incident\_version:706/ty016p23y1v1@ddb993949894
- Change 1 of 1 for this incident

Incident page (full timeline): [Increased errors while connecting to crates.io](https://rewindex.com/company/crates-io/incidents/ty016p23y1v1.md)
## What changed

**1. Added: Title**

```diff
+ Increased errors while connecting to crates.io
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2020-03-16 16:53 UTC
```

**5. Added: Resolved time**

```diff
+ 2020-03-16 17:06 UTC
```

**6. Added: Affected components**

```diff
+ crates.io
```

**7. Added: Update** (monitoring) · 2020-03-16 16:53 UTC

```diff
+ Due to a outage affecting our infrastructure provider, in the past hour we experienced an increased number of errors while connecting to crates.io. We're continuing to monitor the situation, and you can follow the progress on Heroku's status page: https://status.heroku.com/incidents/1973
```

**8. Added: Update** (resolved) · 2020-03-16 17:06 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2020-03-16 16:53 UTC | Major incident: Increased errors while connecting to crates.io (this change) | major |

All crates.io changes: [timeline](https://rewindex.com/company/crates-io/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


---
Canonical: https://rewindex.com/change/idfcd0755265a4a · Markdown: https://rewindex.com/change/idfcd0755265a4a.md · JSON: https://rewindex.com/api/v1/changes/idfcd0755265a4a · Generated 2026-10-20T00:48:34.239Z