Support dicts in ast_dict

3 jobs for master in 6 minutes and 7 seconds (queued for 1 minute and 1 second)
Name Stage Failure
full Test
$ python -m pip install --upgrade tensorflow==2.0
ERROR: Could not find a version that satisfies the requirement tensorflow==2.0 (from versions: 2.2.0rc1, 2.2.0rc2, 2.2.0rc3, 2.2.0rc4, 2.2.0, 2.3.0rc0, 2.3.0rc1, 2.3.0rc2, 2.3.0)
ERROR: No matching distribution found for tensorflow==2.0
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ERROR: Job failed: exit code 1