Please stabilize
In the future, please populate the package list field and set the CC-ARCHES keyword instead of CC-ing arches directly. https://devmanual.gentoo.org/keywording/index.html#moving-from-arch-to-arch
Sanity check failed: > sci-physics/hepmc-3.2.6 > bdepend amd64 dev profile default/linux/amd64/17.0/musl (4 total) > sci-physics/root:= > bdepend amd64 stable profile default/linux/amd64/17.1 (45 total) > sci-physics/root:=
Sanity check failed: > sci-physics/hepmc-3.2.6 > bdepend amd64 dev profile default/linux/amd64/17.0/musl (14 total) > sci-physics/root:= > bdepend amd64 stable profile default/linux/amd64/17.1 (72 total) > sci-physics/root:=
I missed that it can depend on root and that there is no stable root.