Created attachment 1555
Source code. Test it running 'dub'.
I get a strange error with dmd 2.069 b1.
I can't understand what happen exactly but apparently traits allMember return an unrelated symbol.
I reduced code using dustmite and manually.
Attached code compile for me using dmd 2.068 on linux x64.
Using dmd 2.069 b1 it fails:
source/tests/utils.d-mixin-13(13): Error: undefined identifier '_D32TypeInfo_S7asserts12AssertResult6__initZ'