FAILED (incompatible) opam => [build camlp5.6.07 OCamlPro/opam-repository:master with 4.01.0 on Darwin (x86_64)]

/github/OCamlPro/opam-repository/task/16070
FAILED (unknown) opam => [build mesh.0.7.6 OCamlPro/opam-repository:master with 4.01.0 on Linux (ppc64)]

/github/OCamlPro/opam-repository/task/16068