The following actions will be performed:
  - install depext 1.0.1

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[depext: http] Command started
[depext: http] Command started
[depext.1.0.1] https://github.com/ocaml/opam-depext/archive/v1.0.1.tar.gz downloaded

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[depext: ocamlopt unix.cmxa] Command started
+ ocamlopt "-I" "/home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/cmdliner" "unix.cmxa" "cmdliner.cmxa" "-o" "opam-depext" "depext.ml" (CWD=/home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/depext.1.0.1)
- File "depext.ml", line 61, characters 16-32:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 114, characters 13-29:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 139, characters 17-33:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 151, characters 17-33:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 169, characters 24-40:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 539, characters 50-53:
- Error: The function applied to this argument has type
-          ?docv:string -> ?doc:string -> Cmdliner.Arg.info
- This argument cannot be applied with label ?env
- File "depext.ml", line 61, characters 16-32:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 114, characters 13-29:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 139, characters 17-33:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 151, characters 17-33:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 169, characters 24-40:
- Warning 3: deprecated: Stdlib.String.lowercase
- Use String.lowercase_ascii instead.
- File "depext.ml", line 539, characters 50-53:
- Error: The function applied to this argument has type
-          ?docv:string -> ?doc:string -> Cmdliner.Arg.info
- This argument cannot be applied with label ?env
[ERROR] The compilation of depext failed at "ocamlopt -I
        /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/cmdliner
        unix.cmxa cmdliner.cmxa -o opam-depext depext.ml".

#=== ERROR while installing depext.1.0.1 ======================================#
# opam-version         1.2.2+dd (3852ba0a7708d4dc37f64dd4cd00f873bf317ac0)
# os                   linux
# command              ocamlopt -I /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/lib/cmdliner unix.cmxa cmdliner.cmxa -o opam-depext depext.ml
# path                 /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/depext.1.0.1
# compiler             4.07.0+pr2051
# exit-code            2
# env-file             /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/depext.1.0.1/depext-10328.env
# stdout-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/depext.1.0.1/depext-10328.out
# stderr-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+pr2051/dotopam/4.07.0+pr2051/build/depext.1.0.1/depext-10328.out
### stdout ###
# [...]
# File "depext.ml", line 151, characters 17-33:
# Warning 3: deprecated: Stdlib.String.lowercase
# Use String.lowercase_ascii instead.
# File "depext.ml", line 169, characters 24-40:
# Warning 3: deprecated: Stdlib.String.lowercase
# Use String.lowercase_ascii instead.
# File "depext.ml", line 539, characters 50-53:
# Error: The function applied to this argument has type
#          ?docv:string -> ?doc:string -> Cmdliner.Arg.info
# This argument cannot be applied with label ?env
### stderr ###
# [...]
# File "depext.ml", line 151, characters 17-33:
# Warning 3: deprecated: Stdlib.String.lowercase
# Use String.lowercase_ascii instead.
# File "depext.ml", line 169, characters 24-40:
# Warning 3: deprecated: Stdlib.String.lowercase
# Use String.lowercase_ascii instead.
# File "depext.ml", line 539, characters 50-53:
# Error: The function applied to this argument has type
#          ?docv:string -> ?doc:string -> Cmdliner.Arg.info
# This argument cannot be applied with label ?env



=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions failed
  - install depext 1.0.1
No changes have been performed
'opam install depext.1.0.1' failed.