mirage/mirage: PR #1627: Cram tests less reliant on exact compiler errors

@0281c9c

Stages:

• ❌ x86_64-debian-13-4.14 (4m27s)
• ❌ arm64-debian-13-4.14 (4m39s)
• ❌ x86_64-debian-13-5.3 (6m00s)
• ❌ arm64-debian-13-5.3 (7m13s)
• ❌ x86_64-debian-13-5.4 (6m46s)
• ❌ arm64-debian-13-5.4 (7m03s)

History:

• 24/11/2025 09:02 ❌ @0281c9c (46m33s)