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Purpose
This PR temporarily pins crc-fast to 1.4 to demonstrate that the architecture testing added in #4428 would have caught the ARM SIGILL issue before merge.
Context
Expected Result
The
test-runtime-architecturesjob should fail on ARM targets (aarch64-unknown-linux-gnu, aarch64-unknown-linux-musl) with SIGILL, proving that PR #4428's architecture testing would have prevented this issue.Note
This PR should NOT be merged. It exists only to demonstrate the test coverage gap. Once CI shows the ARM failures, this proves #4428's value and this PR can be closed.
Related: #4428