How to execute cargo test using the nightly channel?

Question

I\'m trying to run my tests with nightly Rust using Windows Powershell. I run cargo test in the directory, and I get

Answer 1

The + functionality comes from rustup, the Rust toolchain manager. It works for both cargo + as well as rustc +.

In addition, you can use

• rustup run
• Since your project requires nightly features, you can change into the directory and run rustup override set to always use the nightly toolchain in that directory.
• Create a file called rust-toolchain in your directory containing the name of the toolchain required (e.g. nightly). This has the safe effect as an override, but can be committed to source control.

See also:

• Is it possible to have multiple coexisting Rust installations?