Summary

• The Lambda runtime now emits versions like python:3.10.mainlinev2.v3 instead of the old python:3.10.v3 format
• This caused integration test snapshot mismatches on the INIT_START Runtime Version log line
• Broadened the sed normalization pattern in scripts/run_integration_tests.sh to match any alphanumeric version suffix, replacing it with vX

Error from a sample failed test run:

Fetching logs for invocations and comparing to snapshots
Failed: Mismatch found between new async-metrics_python logs (first) and snapshot (second):
911c911
< INIT_START Runtime Version: python:3.10.mainlinev2.v3	Runtime Version ARN: arn:aws:lambda:eu-west-1:XXXX:eu-west-1
---
> INIT_START Runtime Version: python:3.10.vX	Runtime Version ARN: arn:aws:lambda:eu-west-1:XXXX:eu-west-1

Test plan

• Run integration tests and verify no snapshot mismatches on INIT_START Runtime Version lines

Notes

Thanks @ojproductions for discussion.

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