Compilation error when deploying to Heroku

[Forerunner117]

Hello,

I am trying to deploy my Phoenix app to Heroku using Elixir 1.2.6 and comeonin 0.11.3 but am getting a compilation error that I can't seem to resolve. Compiling locally appears to work fine. I've tried setting always_rebuild=true, but that results in the same error. Apologies for the long copy/paste, not sure what may be relevant:

Counting objects: 342, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (210/210), done.
Writing objects: 100% (342/342), 11.75 MiB | 1.40 MiB/s, done.
Total 342 (delta 223), reused 182 (delta 112)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Elixir app detected
remote: -----> Checking Erlang and Elixir versions
remote: Will use the following versions:
remote: * Stack cedar-14
remote: * Erlang 18.3
remote: * Elixir 1.2.6
remote: Will export the following config vars:
remote: * Config vars DATABASE_URL
remote: * MIX_ENV=prod
remote: -----> Cleaning all cache to force rebuilds
remote: -----> Fetching Erlang 18.3
remote: -----> Installing Erlang 18.3 (changed)
remote:
remote: -----> Fetching Elixir v1.2.6
remote: -----> Installing Elixir v1.2.6 (changed)
remote: -----> Installing Hex
remote: * creating /app/.mix/archives/hex-0.14.0.ez
remote: -----> Installing rebar
remote: * creating /app/.mix/rebar
remote: * creating /app/.mix/rebar3
remote: -----> Fetching app dependencies with mix
remote: Running dependency resolution
remote: * Getting phoenix (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/phoenix-1.2.1.tar)
remote: Fetched package
remote: * Getting phoenix_pubsub (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/phoenix_pubsub-1.0.1.tar)
remote: Fetched package
remote: * Getting phoenix_ecto (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/phoenix_ecto-3.0.1.tar)
remote: Fetched package
remote: * Getting postgrex (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/postgrex-0.12.1.tar)
remote: Fetched package
remote: * Getting phoenix_html (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/phoenix_html-2.7.0.tar)
remote: Fetched package
remote: * Getting gettext (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/gettext-0.11.0.tar)
remote: Fetched package
remote: * Getting cowboy (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/cowboy-1.0.4.tar)
remote: Fetched package
remote: * Getting comeonin (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/comeonin-0.11.3.tar)
remote: Fetched package
remote: * Getting cowlib (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/cowlib-1.0.2.tar)
remote: Fetched package
remote: * Getting ranch (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/ranch-1.2.1.tar)
remote: Fetched package
remote: * Getting plug (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/plug-1.2.2.tar)
remote: Fetched package
remote: * Getting mime (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/mime-1.0.1.tar)
remote: Fetched package
remote: * Getting connection (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/connection-1.0.4.tar)
remote: Fetched package
remote: * Getting db_connection (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/db_connection-1.0.0-rc.5.tar)
remote: Fetched package
remote: * Getting decimal (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/decimal-1.2.0.tar)
remote: Fetched package
remote: * Getting ecto (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/ecto-2.0.5.tar)
remote: Fetched package
remote: * Getting poolboy (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/poolboy-1.5.1.tar)
remote: Fetched package
remote: * Getting poison (Hex package)
remote: Checking package (https://repo.hex.pm/tarballs/poison-2.2.0.tar)
remote: Fetched package
remote: -----> Copying hex from /app/.mix/archives/hex-0.14.0.ez
remote: -----> Compiling
remote: ==> connection
remote: Compiled lib/connection.ex
remote: Generated connection app
remote: ==> gettext
remote: Compiled src/gettext_po_parser.yrl
remote: Compiled src/gettext_po_parser.erl
remote: Compiled lib/gettext/backend.ex
remote: Compiled lib/gettext.ex
remote: Compiled lib/gettext/extractor_agent.ex
remote: Compiled lib/gettext/interpolation.ex
remote: Compiled lib/gettext/po/exceptions.ex
remote: Compiled lib/gettext/plural.ex
remote: Compiled lib/gettext/po/plural_translation.ex
remote: Compiled lib/gettext/po/translation.ex
remote: Compiled lib/gettext/po/tokenizer.ex
remote: Compiled lib/gettext/extractor.ex
remote: Compiled lib/gettext/po/parser.ex
remote: Compiled lib/gettext/compiler.ex
remote: Compiled lib/gettext/merger.ex
remote: Compiled lib/gettext/fuzzy.ex
remote: Compiled lib/gettext/po.ex
remote: Compiled lib/mix/tasks/compile.gettext.ex
remote: Compiled lib/gettext/po/translations.ex
remote: Compiled lib/mix/tasks/gettext.extract.ex
remote: Compiled lib/mix/tasks/gettext.merge.ex
remote: Generated gettext app
remote: ==> ranch (compile)
remote: Compiled src/ranch_transport.erl
remote: Compiled src/ranch_protocol.erl
remote: Compiled src/ranch_acceptor.erl
remote: Compiled src/ranch_app.erl
remote: Compiled src/ranch_listener_sup.erl
remote: Compiled src/ranch_acceptors_sup.erl
remote: Compiled src/ranch_sup.erl
remote: Compiled src/ranch_conns_sup.erl
remote: Compiled src/ranch_tcp.erl
remote: Compiled src/ranch_ssl.erl
remote: Compiled src/ranch_server.erl
remote: Compiled src/ranch.erl
remote: ==> poolboy (compile)
remote: Compiled src/poolboy_worker.erl
remote: Compiled src/poolboy_sup.erl
remote: Compiled src/poolboy.erl
remote: ==> decimal
remote: Compiled lib/decimal.ex
remote: Generated decimal app
remote: ==> poison
remote: Compiled lib/poison.ex
remote: Compiled lib/poison/decoder.ex
remote: Compiled lib/poison/parser.ex
remote: Compiled lib/poison/encoder.ex
remote: Generated poison app
remote: ==> comeonin
remote: cc -g -O3 -Wall -I/app/.platform_tools/erlang/erts-7.3/include -Ic_src -fPIC -shared -o priv/bcrypt_nif.so c_src/bcrypt_nif.c c_src/blowfish.c
remote:
remote: Compiled lib/comeonin.ex
remote:
remote: == Compilation error on file lib/comeonin/bcrypt.ex ==
remote: ** (MatchError) no match of right hand side value: {:error, :on_load_failure}
remote: (stdlib) erl_eval.erl:670: :erl_eval.do_apply/6
remote:
remote: could not compile dependency :comeonin, "mix compile" failed. You can recompile this dependency with "mix deps.compile comeonin", update it with "mix deps.update comeonin" or clean it with "mix deps.clean comeonin"
remote:
remote: 06:30:36.750 [error] Process #PID<0.458.0> raised an exception
remote: ** (MatchError) no match of right hand side value: {:error, {:load_failed, 'Failed to load NIF library: '/tmp/build_148f7da2d0f731db24122f396676b482/_build/prod/lib/comeonin/priv/bcrypt_nif.so: cannot open shared object file: No such file or directory''}}
remote: lib/comeonin/bcrypt.ex:24: Comeonin.Bcrypt.init/0
remote: (kernel) code_server.erl:1669: anonymous fn/1 in :code_server.handle_on_load/4
remote:
remote: 06:30:36.752 [warn] The on_load function for module Elixir.Comeonin.Bcrypt returned {{:badmatch,
remote: {:error,
remote: {:load_failed,
remote: 'Failed to load NIF library: '/tmp/build_148f7da2d0f731db24122f396676b482/_build/prod/lib/comeonin/priv/bcrypt_nif.so: cannot open shared object file: No such file or directory''}}},
remote: [{Comeonin.Bcrypt, :init, 0, [file: 'lib/comeonin/bcrypt.ex', line: 24]},
remote: {:code_server, :"-handle_on_load/4-fun-0-", 1,
remote: [file: 'code_server.erl', line: 1669]}]}
remote:
remote: ! Push rejected, failed to compile Elixir app.
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to fast-fjord-69227.
remote:
To git@heroku.com:fast-fjord-69227.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:fast-fjord-69227.git'

[riverrun]

Can you update comeonin to the latest version, which is 2.6, and try it again?
Let me know if it works then.

[Forerunner117]

That did it. Not sure why I didn't think to try updating 😕

Thank you!