Name of Failure:

test-auth-aws fails on the tests-ubuntu and tests-ubuntu2404 build variants. The task reports no failing tests: it exits during setup of the EKS pod identity leg, before any driver test runs.

Link to task:

https://spruce.corp.mongodb.com/task/drivers_tools_tests_ubuntu_test_auth_aws_patch_4f6cc0215b077e68ec4dfbbaf9cd6a9e6a6d0eaa_6aeb2afe9a42510007a8b2da_26_11_04_12_54_24/logs?execution=0

Context of when and why the failure occurred:

New regression from infrastructure, not from a code change. The task passed 14 of 14 activated runs over the prior two weeks, last on revision 65465cd4ee (2026-11-03). From revision 4f6cc0215b it fails: a patch build on that revision failed in the EKS leg, and the mainline run timed out. Cause: the EKS cluster drivers-2945-test that the test runs against was removed, so aws eks describe-cluster returns ResourceNotFoundException and both the setup and teardown scripts exit non-zero. Related ticket: DRIVERS-2945.

Stack trace:

aws: [ERROR]: An error occurred (ResourceNotFoundException) when calling the DescribeCluster operation: No cluster found for name: drivers-2945-test.
Additional error details:
clusterName: drivers-2945-test
subprocess.CalledProcessError: Command '['bash', PosixPath('.evergreen/auth_aws/lib/eks-pod-setup.sh'), 'mongodb-14244']' returned non-zero exit status 254.
subprocess.CalledProcessError: Command '['bash', PosixPath('.evergreen/auth_aws/lib/eks-pod-teardown.sh'), 'mongodb-14244']' returned non-zero exit status 1.