CI: conda build test failing
Don't think we have an issue for this yet

```
[building conda recipe]

Leaving build/test directories:
  Work:	 /home/travis/miniconda3/conda-bld/work 
  Test:	 /home/travis/miniconda3/conda-bld/test_tmp 
Leaving build/test environments:
  Test:	source activate  /home/travis/miniconda3/conda-bld/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_p 
  Build:	source activate  /home/travis/miniconda3/conda-bld/_build_env 


Traceback (most recent call last):
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/environ.py", line 706, in get_install_actions
    actions = install_actions(prefix, index, specs, force=True)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/common/io.py", line 441, in decorated
    return f(*args, **kwds)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/plan.py", line 540, in install_actions
    txn = solver.solve_for_transaction(prune=prune, ignore_pinned=not pinned)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/core/solve.py", line 504, in solve_for_transaction
    force_remove, force_reinstall)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/core/solve.py", line 437, in solve_for_diff
    final_precs = self.solve_final_state(deps_modifier, prune, ignore_pinned, force_remove)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/core/solve.py", line 317, in solve_final_state
    conflicting_specs = r.get_conflicting_specs(tuple(final_environment_specs))
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/resolve.py", line 697, in get_conflicting_specs
    reduced_index = self.get_reduced_index(specs)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/resolve.py", line 254, in get_reduced_index
    specs, features = self.verify_specs(specs)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda/resolve.py", line 172, in verify_specs
    raise ResolvePackageNotFound(bad_deps)
conda.exceptions.ResolvePackageNotFound: 
  - numpy[version='>=1.14.0,<1.14']

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/travis/miniconda3/bin/conda-build", line 11, in <module>
    sys.exit(main())
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/cli/main_build.py", line 413, in main
    execute(sys.argv[1:])
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/cli/main_build.py", line 404, in execute
    verify=args.verify)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/api.py", line 193, in build
    need_source_download=need_source_download, config=config, variants=variants)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/build.py", line 1944, in build_tree
    notest=notest,
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/build.py", line 1032, in build
    output_metas = expand_outputs([(m, need_source_download, need_reparse_in_env)])
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/render.py", line 582, in expand_outputs
    for (output_dict, m) in _m.get_output_metadata_set(permit_unsatisfiable_variants=False):
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/metadata.py", line 1845, in get_output_metadata_set
    permit_unsatisfiable_variants=permit_unsatisfiable_variants)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/metadata.py", line 670, in finalize_outputs_pass
    fm = finalize_metadata(om, permit_unsatisfiable_variants=permit_unsatisfiable_variants)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/render.py", line 379, in finalize_metadata
    exclude_pattern)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/render.py", line 293, in add_upstream_pins
    permit_unsatisfiable_variants, exclude_pattern)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/render.py", line 281, in _read_upstream_pin_files
    permit_unsatisfiable_variants=permit_unsatisfiable_variants)
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/render.py", line 117, in get_env_dependencies
    channel_urls=tuple(m.config.channel_urls))
  File "/home/travis/miniconda3/lib/python3.6/site-packages/conda_build/environ.py", line 708, in get_install_actions
    raise DependencyNeedsBuildingError(exc, subdir=subdir)
conda_build.exceptions.DependencyNeedsBuildingError: Unsatisfiable dependencies for platform linux-64: {"numpy[version='>=1.14.0,<1.14']"}

real	0m9.261s
user	0m9.234s
sys	0m1.117s
```

https://api.travis-ci.org/v3/job/338476528/log.txt


Seems like `min_pin='1.14', max_pin='1.14'` is what we would want if want want 1.14.