WARNING: You might not want to use this outside of Cargo.

• This is designed for testing Cargo itself. Use at your own risk.
• No guarantee on any stability across versions.
• No feature request would be accepted unless proved useful for testing Cargo.

lib.rs:

Cargo test support.

See https://rust-lang.github.io/cargo/contrib/ for a guide on writing tests.

WARNING: You might not want to use this outside of Cargo.

• This is designed for testing Cargo itself. Use at your own risk.
• No guarantee on any stability across versions.
• No feature request would be accepted unless proved useful for testing Cargo.