Warnings emitted when translating to other formats

[Fabizocker456]

Description

When translating to ASM, LLVM IR, HIR and MIR (not WASM), the two warnings warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type and warning: ignoring --out-dir flag due to -o flag will always be emitted to compiler stderr.

Steps to reproduce

• Insert any code into the playground (example:

fn main() { }

)

• In the WHAT DO YOU WANT TO DO? menu, select one of the output formats listed above
• Check the Standard Error output field