[Example MediaWiki core build](https://integration.wikimedia.org/ci/job/mediawiki-core-php72-phan-docker/203/console):
```counterexample
12:16:30 [Composer\Downloader\TransportException]
12:16:30 The "https://packagist.org/p/provider-latest%246760aba1bc237ab9d18b5c819fea3ab689abaef67db86ae67f78830cfebce931.json" file could not be downloaded (HTTP/1.1 404 Not Found)
```
[Example Wikibase build](https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-hhvm-docker/54974/console):
```counterexample
12:17:30 [Composer\Downloader\TransportException]
12:17:30 The "http://packagist.org/p/provider-2016%24e6f26a3fa2ea1261459b39ffa1f461ca4fb2ae031d46b8ecb204fc2bdb38bd1c.json" file could not be downloaded (HTTP/1.1 302 Found)
```
Note that the HTTP code varies, though I would be surprised if it’s actually tied to the different repositories. A few builds also still seem to be passing, so this seems to be somewhat flaky (though my impression is that the majority of builds fail).