This is the fifth field test in my Scarab Diagnostic Suite series, and it is the most significant one so far.

The target was a long-running issue in Terraform core:

hashicorp/terraform #32901

The issue has been open since 2023 and centers around shared provider cache behavior. On the surface, it looks like a permissions problem: Terraform attempts to use a shared provider cache, but under certain conditions it tries to write into that cache and fails with errors like:

permission denied