Ec2 cross account access

Please mention the following:
- What command was run?
python3 cloudmapper.py collect --account MYACCOUNT

- Are you working out of a virtualenv environment, Docker, or something else?
No, straight pure bash shell with aws cli on ubuntu 20.04

The error
ERROR: Ensure your creds are valid.
An error occurred (AccessDenied) when calling the GetUser operation: User: arn:aws:sts::??????????????:assumed-role/role_myrole/i-xxxxxxxxxxxxxxx is not authorized to perform: iam:GetUser on resource: user test

And yes I have iam:Getuser on my Policy

PS: this is a access with a ec2 cross account role access and not a IAM user with Private key and Secret Key

Start with the reported command, cloudmapper.py collect --account MYACCOUNT, and trace how AWS CLI credentials and the iam:GetUser call are handled for an EC2 cross-account role. Compare that path with the stated role policy and determine whether cross-account role access is supported; done means the failure is fixed or the required credential and permission behavior is clearly established.

Written by the indexing model from the issue text.