I've put a few pragma(msg)s in the compiler and to my surprise build.d eats the stderr. How do I get it to show it? And why is that the default?

On 30/06/2020 19.07, Andrei Alexandrescu via Dlang-internal wrote:
> I've put a few pragma(msg)s in the compiler and to my surprise build.d eats the stderr. How do I get it to show it? And why is that the default?

Current setting is to only print output on an error (reduces information
overload).
There's no distinction between stdout/stderr as Phobos execute is used
(execute combines stdout+stderr).
Anyhow, it's certainly possible to change the behavior

https://github.com/dlang/dmd/pull/11352