--- source: tests/solver.rs expression: error --- The following packages are incompatible ├─ b * can be installed with any of the following options: │ └─ b 6 | 7 would require │ └─ d >=1, <2, which can be installed with any of the following options: │ └─ d 1 └─ c * cannot be installed because there are no viable options: └─ c 1 | 2 would require └─ d >=2, <3, which cannot be installed because there are no viable options: └─ d 2, which conflicts with the versions reported above.