/usr/include/dolfin/fem/ is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dolfin/fem/Assembler.h
/usr/include/dolfin/fem/AssemblerTools.h
/usr/include/dolfin/fem/BasisFunction.h
/usr/include/dolfin/fem/BoundaryCondition.h
/usr/include/dolfin/fem/DirichletBC.h
/usr/include/dolfin/fem/DofMap.h
/usr/include/dolfin/fem/DofMapBuilder.h
/usr/include/dolfin/fem/DomainAssigner.h
/usr/include/dolfin/fem/Equation.h
/usr/include/dolfin/fem/FiniteElement.h
/usr/include/dolfin/fem/Form.h
/usr/include/dolfin/fem/GenericDofMap.h
/usr/include/dolfin/fem/LinearVariationalProblem.h
/usr/include/dolfin/fem/LinearVariationalSolver.h
/usr/include/dolfin/fem/NonlinearVariationalProblem.h
/usr/include/dolfin/fem/NonlinearVariationalSolver.h
/usr/include/dolfin/fem/OpenMpAssembler.h
/usr/include/dolfin/fem/PeriodicBC.h
/usr/include/dolfin/fem/PointSource.h
/usr/include/dolfin/fem/SparsityPatternBuilder.h
/usr/include/dolfin/fem/SystemAssembler.h
/usr/include/dolfin/fem/UFC.h
/usr/include/dolfin/fem/UFCCell.h
/usr/include/dolfin/fem/UFCMesh.h
/usr/include/dolfin/fem/VariationalProblem.h
/usr/include/dolfin/fem/assemble.h
/usr/include/dolfin/fem/dolfin_fem.h
/usr/include/dolfin/fem/solve.h
/usr/include/dolfin/fem/ufcexp.h