PASS opam => [build msgpack.1.0.0 OCamlPro/opam-repository:master with 4.01.0 on Linux (x86_64)]

/github/OCamlPro/opam-repository/task/51770
FAIL (incompatible) opam => [build otags.4.00.1 OCamlPro/opam-repository:master with 4.01.0 on Linux (x86_64)]

/github/OCamlPro/opam-repository/task/51788