$ spack compiler find
Traceback (most recent call last):
  File "/soft/spack/bin/spack", line 179, in <module>
    main()
  File "/soft/spack/bin/spack", line 157, in main
    return_val = command(parser, args)
  File "/blues/gpfs/home/software/spack/lib/spack/spack/cmd/compiler.py", line 145, in compiler
    action[args.compiler_command](args)
KeyError: 'find'
$ spack compiler add
==> Found no new compilers
$ spack compiler add /soft/spack/opt/spack/linux-x86_64/gcc-5.3.0/gcc-6.1.0-q2zosj3igepi3pjnqt74bwazmptr5gpj
Traceback (most recent call last):
  File "/soft/spack/bin/spack", line 179, in <module>
    main()
  File "/soft/spack/bin/spack", line 157, in main
    return_val = command(parser, args)
  File "/blues/gpfs/home/software/spack/lib/spack/spack/cmd/compiler.py", line 145, in compiler
    action[args.compiler_command](args)
  File "/blues/gpfs/home/software/spack/lib/spack/spack/cmd/compiler.py", line 79, in compiler_add
    compilers = [c for c in spack.compilers.find_compilers(*args.add_paths)
TypeError: find_compilers() takes no arguments (1 given)