Does cross use the local rustc or the docker image's compiler?

[frederikhors]

Am I wrong in thinking that cross on my windows machine uses the version of rustc that I installed with rustup?

Or is it using a version of rustc in the cross Docker image? And in this case, which version?

[Emilgardis]

cross mounts a rust toolchain "installed" on the host, usually using platform x86_64-unknown-linux-gnu

the toolchain used can be overridden with cross +toolchain or any other standard way to change the toolchain (rust-toolchain.toml, etc) and the platform of the used toolchain can be changed with target.<target>.image.toolchain