Missing `repo_metadata` for packages despite valid `repository_url`

[rng70]

For the package github.com/barebitcoin/squirrel, a valid repository_url exists, but the repo_metadata field is missing.

URL: https://packages.ecosyste.ms/api/v1/registries/proxy.golang.org/packages/github.com%2Fbarebitcoin%2Fsquirrel

[
  {
    "id": 10946382,
    "name": "github.com/barebitcoin/squirrel",
    "repository_url": "https://github.com/barebitcoin/squirrel",
    "metadata": {},
    "repo_metadata": {}
  }
]

The same issue appears to affect many other packages as well.

[Floppy]

Interesting, the empty hash implies that fetch_repo_metadata is running (because the URL is ok) but having some sort of error.

packages/app/models/package.rb

Line 411 in 54ab7b9

def fetch_repo_metadata

The repo service request for this package does work:

packages/app/models/package.rb

Line 411 in 54ab7b9

def fetch_repo_metadata

I think this is probably happening because at the moment we have intermittent 500 errors on the repos service; if that happens to one of these requests, the bare rescue on line 425 will absorb it, and so the update job won't get rerun, resulting in an empty hash.

I think that means we need to change the error handling for that method, so that it can bubble up and cause a retry.