Build Log: dot-merlin-reader.5.4.2~5.4preview

Can't find all required versions. Selected: base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base ocaml-base-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml&dot-merlin-reader ocaml-base-compiler ocaml-base-compiler system-mingw system-mingw|system-msvc&winpthreads ocaml base-domains ocaml-variants ocaml-base-compiler - dot-merlin-reader -> (problem) User requested = 5.4.2~5.4preview No usable implementations: dot-merlin-reader.5.6-504: Rejected by user-specified constraint dot-merlin-reader (= 5.4.2~5.4preview) dot-merlin-reader.5.6-503: Rejected by user-specified constraint dot-merlin-reader (= 5.4.2~5.4preview) dot-merlin-reader.5.3-502: Rejected by user-specified constraint dot-merlin-reader (= 5.4.2~5.4preview) dot-merlin-reader.4.19-414: Rejected by user-specified constraint dot-merlin-reader (= 5.4.2~5.4preview) dot-merlin-reader.4.17.1-501: Rejected by user-specified constraint dot-merlin-reader (= 5.4.2~5.4preview) ... - ocaml -> ocaml.5.4.0 User requested = 5.4.0 - ocaml-compiler -> ocaml-compiler.5.4.0 ocaml-base-compiler 5.4.0 requires = 5.4.0 - ocaml-variants -> (problem) Rejected candidates: ocaml-variants.5.5.0+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler ocaml-variants.5.4.1+trunk: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler ocaml-variants.5.4.0+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler ocaml-variants.5.4.0~rc1+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler ocaml-variants.5.4.0~beta2+options: In same conflict class (ocaml-core-compiler) as ocaml-base-compiler ... - system-mingw -> (problem) No known implementations at all