HTTP 500 when fetching pull requests

[lourot]

Now consistently hitting

✔ Fetched NixOS/nixpkgs's contributors
⠙ Fetching NixOS/nixpkgs's pull requests...Error while fetching https://api.github.com/repos/NixOS/nixpkgs/pulls?state=all&page=1&per_page=$
00
API rate limit state:
{ core: { limit: 5000, remaining: 4996, reset: 1537441414 },
  search: { limit: 30, remaining: 30, reset: 1537437875 },
  graphql: { limit: 5000, remaining: 5000, reset: 1537441415 } }
Promise {
  <rejected> Body {
    url:
     'https://********:********@api.github.com/repos/NixOS/nixpkgs/pulls?state=all&page=1&per_page=10$&client_id=********&client_secret=********',
    status: 500,
    statusText: 'Internal Server Error',
    headers: Headers { _headers: [Object] },
    ok: false,
    body:
     PassThrough {
       _readableState: [ReadableState],
       readable: true,
       _events: [Object],
       _eventsCount: 1,
       _maxListeners: undefined,
       _writableState: [WritableState],
       writable: false,
       allowHalfOpen: true,
       _transformState: [Object] },
    bodyUsed: false,
    size: 0,
    timeout: 0,
    _raw: [],
    _abort: false } }

although our code retries a few times on 500.

[lourot]

This looks like an issue on GitHub's side:

• https://api.github.com/repos/reframejs/reframe/pulls?state=all ✔️
• https://api.github.com/repos/NixOS/nixpkgs/pulls?state=all ❌
• https://api.github.com/repos/NixOS/nixpkgs/pulls ✔️