The following actions will be performed:
  - install owl 0.4.0

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[owl: http] Command started
[owl: http] Command started
[owl.0.4.0] https://github.com/owlbarn/owl/releases/download/0.4.0/owl-0.4.0.tbz downloaded

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[owl: dune build] Command started
+ dune "build" "-p" "owl" "-j" "4" (CWD=/home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/owl.0.4.0)
-       ocamlc src/owl/.owl.objs/owl_sparse_common.{cmi,cmo,cmt} (exit 2)
- (cd _build/default && /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/bin/ocamlc.opt -w -40 -safe-string -g -bin-annot -I src/owl/.owl.objs -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/bytes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/ctypes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/eigen -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/owl-base -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/plplot -no-alias-deps -o src/owl/.owl.objs/owl_sparse_common.cmo -c -impl src/owl/owl_sparse_common.ml)
- File "src/owl/sparse/owl_sparse_common.ml", line 272, characters 37-56:
- Error: Unbound value Eigen.Sparse.S.gemm
-       ocamlc src/owl/.owl.objs/owl_sparse_common.{cmi,cmo,cmt} (exit 2)
- (cd _build/default && /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/bin/ocamlc.opt -w -40 -safe-string -g -bin-annot -I src/owl/.owl.objs -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/bytes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/ctypes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/eigen -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/owl-base -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/plplot -no-alias-deps -o src/owl/.owl.objs/owl_sparse_common.cmo -c -impl src/owl/owl_sparse_common.ml)
- File "src/owl/sparse/owl_sparse_common.ml", line 272, characters 37-56:
- Error: Unbound value Eigen.Sparse.S.gemm
[ERROR] The compilation of owl failed at "dune build -p owl -j 4".

#=== ERROR while installing owl.0.4.0 =========================================#
# opam-version         1.2.2+dd (3852ba0a7708d4dc37f64dd4cd00f873bf317ac0)
# os                   linux
# command              dune build -p owl -j 4
# path                 /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/owl.0.4.0
# compiler             4.07.0+pr2051
# exit-code            1
# env-file             /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/owl.0.4.0/owl-9622.env
# stdout-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/owl.0.4.0/owl-9622.out
# stderr-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/owl.0.4.0/owl-9622.out
### stdout ###
#       ocamlc src/owl/.owl.objs/owl_sparse_common.{cmi,cmo,cmt} (exit 2)
# (cd _build/default && /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/bin/ocamlc.opt -w -40 -safe-string -g -bin-annot -I src/owl/.owl.objs -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/bytes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/ctypes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/eigen -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/owl-base -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/plplot -no-alias-deps -o src/owl/.owl.objs/owl_sparse_common.cmo -c -impl src/owl/owl_sparse_common.ml)
# File "src/owl/sparse/owl_sparse_common.ml", line 272, characters 37-56:
# Error: Unbound value Eigen.Sparse.S.gemm
### stderr ###
#       ocamlc src/owl/.owl.objs/owl_sparse_common.{cmi,cmo,cmt} (exit 2)
# (cd _build/default && /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/bin/ocamlc.opt -w -40 -safe-string -g -bin-annot -I src/owl/.owl.objs -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/bytes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/ctypes -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/eigen -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/owl-base -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/plplot -no-alias-deps -o src/owl/.owl.objs/owl_sparse_common.cmo -c -impl src/owl/owl_sparse_common.ml)
# File "src/owl/sparse/owl_sparse_common.ml", line 272, characters 37-56:
# Error: Unbound value Eigen.Sparse.S.gemm



=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions failed
  - install owl 0.4.0
No changes have been performed
'opam install owl.0.4.0' failed.