But the crux from Karthik's snippet is
```
fastbui...
# generale
enough-analyst-54434
07/25/2017, 3:18 PMBut the crux from Karthik's snippet is
Copy code
fastbuild/bin/third_party/pex/_pex.runfiles/__main__/third_party/pex/pex/package.py", line 87, in satisfies
return requirement.specifier.contains(self.raw_version, prereleases=allow_prereleases)
AttributeError: Requirement instance has no attribute 'specifier'