crates:
- name: A
  deps:
  - B
  features:
    F0:
    - - B
      - F1
- name: B
  deps:
  - C
  features:
    F1:
    - - C
      - F2
- name: C
  deps:
  - D
  features:
    F2:
    - - D
      - F3
- name: D
  features:
    F3: null
cases:
- cmd: lint why-enabled -p B --feature F1
  stdout: |
    Feature F1/B is enabled by:
      A/F0
- cmd: lint why-enabled -p C --feature F2
  stdout: |
    Feature F2/C is enabled by:
      B/F1
- cmd: lint why-enabled -p D --feature F3
  stdout: |
    Feature F3/D is enabled by:
      C/F2