In Elixir 1.6.4 timing is not correct

[shifters67]

In elixir 1.6.4 with Erlang 20.3 on windows;

Run every minute task runs every 30 seconds i.e. twice per minute.

A run every 5 minutes task runs twice in the first minute, then doesn't run until 5 minutes later but then runs twice within the same minute again etc

defmodule Core.Scheduler do
use Cronex.Scheduler
require Logger

every 5, :minute do
Logger.debug "Run every 5 minute task"
end

every :minute do
Logger.debug "Run every minute task"
end
end

[TORIFUKUKaiou]

I meet the same issue.
I use Elixir 1.9.4 (compiled with Erlang/OTP 22).

The below shows my workaround.

mix.exs

def deps do
  [{:cronex, github: "jbernardo95/cronex", ref: "345b57e14667a08280d790afdfbb359f467649df"}]
end

• I use cronex with nerves(https://nerves-project.org/).
• I want to use the revision of removed dependency on Mix.env.

config/config.exs

config :cronex,
  ping_interval: 60000

• I guess that it causes twice in 1 minute 'cause Cronex.Table.ping_interval returns 30s.
• I set 60s.