CodeCov uploads are failing

[zslayton]

The repo's code coverage statistics haven't been updated in a while.

It appears that the upload fails on the first CI Action attempt, then reports success (while quietly failing) on the second attempt because it couldn't find the upload from the first commit to compare it to.

Here's an example of a failure.

The suggested fix is to "upload with the Codecov repository upload token to resolve issue":

[2024-10-30T19:59:23.227Z] ['error'] There was an error running the uploader: Error uploading to https://codecov.io: Error: There was an error fetching the storage URL during POST: 429 - {"message":"Rate limit reached. Please upload with the Codecov repository upload token to resolve issue. Expected time to availability: 962s."}

[zslayton]

Unfortunately, it looks like adding the token was necessary but not sufficient to get this working.
The upload now succeeds:

...but the provided report URL gives a 404:

[zslayton]

Another part of the problem: the repo was moved to a new organization in the last couple of years (amzn -> amazon-ion), which is why the upload resulted in a 404--the resulting URL was no longer valid. Regenerating the CODECOV_TOKEN seems to have gotten this back in sync.

Example upload URL that works.

Now for the next (and hopefully final?) mystery:

[zslayton]

It looks like this complaining because the parent commit's codecov upload had failed, so there was no basis for comparison. Now that the CODECOV_TOKEN has been corrected, I was able to re-run the codecov action for the parent PR and everything seems to be working now.