I want to execute a shell command using Rust. My code is equivalent to the following:

let mut command = std::process::Command::new("cmd").args(&["/c", "my-command"]);
let output = process.output()?;

The problem I’m facing is that the output of my-command contains characters like テスト, and those characters are converted to ??? when reading the output (stdout). I believe my problem can be solved by using the method fmt since, as the documentation says, the default formatter works as follows (which I believe is my problem):

Any non-utf8 data is lossily converted using the utf8 replacement
character.

However, I am struggling to provide my own formatter for my command .

How can this be solved? Thanks.