An example of the failure: https://evergreen.mongodb.com/task/mongo_tools_amazon2_aws_auth_4.4_252cab37f1c57910db9eef2950a47ef83a5c4c50_23_02_16_17_12_14

The error

{"t":{"$date":"2023-02-16T17:19:41.547+00:00"},"s":"E",  "c":"ACCESS",   "id":4742901, "ctx":"main","msg":"Unsupported SASL mechanism","attr":{"mechanism":"MONGODB-AWS"}}

is caused by a bug in the downloading script that downloads the community version instead of the enterprise version for aws-auth tasks.