===>  License MIT accepted by the user
===>   elixir-kafka_ex-0cipiertest depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by elixir-kafka_ex-0cipiertest for building
===>  Extracting for elixir-kafka_ex-0cipiertest
=> SHA256 Checksum OK for jacklund-kafka_ex-0cipiertest_GH0.tar.gz.
===>  Patching for elixir-kafka_ex-0cipiertest
===>   elixir-kafka_ex-0cipiertest depends on executable: elixir - found
===>   elixir-kafka_ex-0cipiertest depends on package: erlang-snappy>=0 - found
===>  Configuring for elixir-kafka_ex-0cipiertest
===>  Building for elixir-kafka_ex-0cipiertest
Could not find Hex, which is needed to build dependency :credo
Shall I install Hex? (if running non-interactively, use "mix local.hex --force") [Yn] *** Error code 1

Stop.
make: stopped in /kafka_ex-0cipiertest-port
1