The following actions will be performed:
  - install gen 0.2.1

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[gen: http] Command started
[gen: http] Command started
[gen.0.2.1] https://github.com/c-cube/gen/archive/0.2.1.tar.gz downloaded

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[gen: ./configure] Command started
+ ./configure "--disable-docs" (CWD=/home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1)
- File "./setup.ml", line 234, characters 8-26:
- Warning 3: deprecated: Stdlib.String.set
- Use Bytes.set instead.
- File "./setup.ml", line 234, characters 8-11:
- Error: This expression has type string but an expression was expected of type
-          bytes
- File "./setup.ml", line 234, characters 8-26:
- Warning 3: deprecated: Stdlib.String.set
- Use Bytes.set instead.
- File "./setup.ml", line 234, characters 8-11:
- Error: This expression has type string but an expression was expected of type
-          bytes
[ERROR] The compilation of gen failed at "./configure --disable-docs".
[gen: ocamlfind remove] Command started
+ ocamlfind "remove" "gen" (CWD=/home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1)
- File "./setup.ml", line 234, characters 8-26:
- Warning 3: deprecated: Stdlib.String.set
- Use Bytes.set instead.
- File "./setup.ml", line 234, characters 8-11:
- Error: This expression has type string but an expression was expected of type
-          bytes
- ocamlfind: [WARNING] No such file: /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/lib/gen/META
- File "./setup.ml", line 234, characters 8-26:
- Warning 3: deprecated: Stdlib.String.set
- Use Bytes.set instead.
- File "./setup.ml", line 234, characters 8-11:
- Error: This expression has type string but an expression was expected of type
-          bytes
- ocamlfind: [WARNING] No such file: /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/lib/gen/META

#=== ERROR while installing gen.0.2.1 =========================================#
# opam-version         1.2.2+dd (3852ba0a7708d4dc37f64dd4cd00f873bf317ac0)
# os                   linux
# command              ./configure --disable-docs
# path                 /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1
# compiler             4.07.0+24fac73
# exit-code            2
# env-file             /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1/gen-27237.env
# stdout-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1/gen-27237.out
# stderr-file          /home/doligez/opamcheck/sandbox2/opamstate/4.07.0+24fac73/dotopam/4.07.0+24fac73/build/gen.0.2.1/gen-27237.out
### stdout ###
# File "./setup.ml", line 234, characters 8-26:
# Warning 3: deprecated: Stdlib.String.set
# Use Bytes.set instead.
# File "./setup.ml", line 234, characters 8-11:
# Error: This expression has type string but an expression was expected of type
#          bytes
### stderr ###
# File "./setup.ml", line 234, characters 8-26:
# Warning 3: deprecated: Stdlib.String.set
# Use Bytes.set instead.
# File "./setup.ml", line 234, characters 8-11:
# Error: This expression has type string but an expression was expected of type
#          bytes



=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions failed
  - install gen 0.2.1
No changes have been performed
'opam install gen.0.2.1' failed.