c2patool --sidecar fails with AVIFs on c2patool <0.10

[eeeps]

When I run:

c2patool "optimized.avif" \
  --parent "orig.jpg" \
  --sidecar \
  --manifest "manifest.json" \
  --output "remote.avif";

I get

Error: embedding manifest

Caused by:
    No such file or directory (os error 2)

However

c2patool "optimized.jpg" \
  --parent "orig.jpg" \
  --sidecar \
  --manifest "manifest.json" \
  --output "remote.jpg";

Succeeds. A colleague encountered this using c2patool 0.7.0 and I was able to replicate it using my local version (0.9.12).

[eeeps]

Upgraded to latest (c2patool 0.10.2) and now I get a different error, which is exciting

claim generator [ClaimGeneratorInfo { name: "c2patool", version: Some("0.10.2"), icon: None, other: {} }]
Error: No claim found

I also get this with the JPEG example which makes me think my manifest.json has some issue in the new version.

Perhaps something was fixed in the 0.10 update ("new Builder/Reader API")?

Here's my manifest.json: https://gist.github.com/eeeps/b14f1a2dda2b4c4332409723aafe4519

[eeeps]

Filed separate issues for the issues I've been having with 0.10: #830 #831

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[github-jira-sync-bot]

✅ Jira issue https://jira.corp.adobe.com/browse/CAI-7491 is successfully created for this GitHub issue.