fix Issue 20500 - running examples on the home page only displays '1 …

[rainers]

…unittests passed'

move unittests out of templated struct FormatSpec so they are not generated when using the template

[dlang-bot]

Thanks for your pull request, @rainers!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	20500	major	running examples on the home page only displays '1 unittests passed'

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "stable + phobos#7359"

[thewilsonator]

I'm not sure why this is mark major, but it is, so should it target stable?

[rainers]

I'm not sure why this is mark major, but it is, so should it target stable?

Do you mean it should target master? I think it's pretty bad that the examples don't work properly on the website, but simple user code as

import std.stdio;
void main()
{
	writefln("The answer is %d", 42);
}

doesn't run when compiled with -unittest. This doesn't work as advertised (run main if there are no unittests).

[thewilsonator]

Derp, ignore that. I can't read.

[wilzbach]

The Buildkite failures are unrelated and due to new agents without a full config being recently added.