source trait is private (Rng)

[burntsushi]

source trait is private (Rng)

[apasel422]

The other solution is to add this to your crate:

extern crate rand;
use rand::Rng;

[BurntSushi]

What is the right thing to do here? Are there any downsides to re-exporting it? That certainly seems like the more convenient option (and one I hadn't thought of!).

[twittner]

The other solution is to add this to your crate: [...]

Yes. In addition it requires adding rand explicitly as a dependency in your Cargo.toml file.

[Wilfred]

Related: rust-lang/rust#22050

[BurntSushi]

OK, I fixed this by re-exporting the rand::Rng type. I'm not sure if it's the right solution, but it seems better than requiring an explicit dependency on rand just to use methods defined by the Gen trait.