These repositories display the classic conflicting versions dependency diamond.
foo 1.0 depends on bar 1.0 and baz 1.0, both of which depend on qux 1.0
foo 2.0 depends on bar 1.0 and baz 2.0 which updates its qux version to 2.0.
Thus foo 2.0 has a transitive dependency on qux 1.0 and qux 2.0, through bar and baz respectively.