for non-standard things in the check directory

Requires (indirectly) orphaned package: 'RRF'
Found the following files/directories:
  'NUL'
Requires (indirectly) orphaned package: ‘RRF’
Found the following files/directories:
  ‘NUL’
Requires (indirectly) orphaned package: ‘RRF’
Namespaces in Imports field not imported from:
  ‘MASS’ ‘Rdpack’
  All declared Imports should be used.
Found the following files/directories:
  ‘NUL’
Namespaces in Imports field not imported from:
  ‘MASS’ ‘Rdpack’
  All declared Imports should be used.
Found the following files/directories:
  ‘NUL’
Namespaces in Imports field not imported from:
  'MASS' 'Rdpack'
  All declared Imports should be used.
Requires (indirectly) orphaned package: ‘RRF’
Found the following files/directories:
  ‘NUL’
Requires (indirectly) orphaned package: ‘RRF’
Found the following files/directories:
  ‘NUL’
Namespaces in Imports field not imported from:
  ‘MASS’ ‘Rdpack’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘MASS’ ‘Rdpack’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘MASS’ ‘Rdpack’
  All declared Imports should be used.