Obtaining ccm from git+
[https: (from -r /home/cassandra/cassandra-dtest/requirements.txt (line 9))
Updating ./env3.6/src/ccm clone (to revision cassandra-test)
Running command git fetch -q --tags
WARNING: Discarding git+
[https:. Command errored out with exit status 1: git fetch -q --tags Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement ccm (unavailable)
ERROR: No matching distribution found for ccm (unavailable)
WARNING: You are using pip version 21.0.1; however, version 21.1.1 is available.