False-positive client?

Hello. So i downloaded installer from webpage
https://installercreator.urbackup.org/

And now getting these errors (see the image). Does it contain viruses or it is safe?

I think it is a general problem that golang executable get detected like this:

I tried to work-around this is by changing build flags, but seems this no longer works:

The web service is available via source (see above) so you can also self-host (and verify that nothing malicious is going on).

If you code-sign the result it probably won’t get detected as much anymore.