Doesn't work on macOS

[opilar]

pip install 'travis-cargo<0.2' --user doesn't install the travis-cargo binary to $HOME/.local/bin:

You can see log here: https://travis-ci.org/rust-lang-nursery/lazy-static.rs/jobs/222036599#L88

Binary goes to $HOME/Library/Python/2.7/bin

λ ~/Library/Python/2.7/ tree
.
├── bin
│   └── travis-cargo
└── lib
    └── python
        └── site-packages
            ├── travis_cargo-0.1.15.dist-info
            │   ├── DESCRIPTION.rst
            │   ├── INSTALLER
            │   ├── METADATA
            │   ├── RECORD
            │   ├── WHEEL
            │   ├── entry_points.txt
            │   ├── metadata.json
            │   └── top_level.txt
            ├── travis_cargo.py
            └── travis_cargo.pyc

It's blocking rust-lang-nursery/lazy-static.rs#65