Output from custom commands gets misinterpreted as errors

Example CMake-Project:

 
cmake_minimum_required(VERSION 3.12)

project(Foo)

add_custom_target(foo ALL
${CMAKE_COMMAND} -E echo
"assets by chunk 3.84 MiB (auxiliary name: common) 22 assets"
VERBATIM
)
 
The output from the custom target in the example (and in my actual case the output from multiple custom commands with distinct origin e.g. Conan and webpack) gets interpreted as errors.
 
This incorrectly adds an error in the Issues pane and when trying to run results in a modal "Ignore All Errors?" dialog.
 
The build system itself reports no errors (exist status is 0).
 
I see I am able to define and use additional "Custom Output Parsers" but I don't see any option to deactivate, modify or inspect the default parser(s).