Implement heartbeat check-ins #197

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2 errors and 10 warnings

The job was canceled because "_1_12_x_24_x" failed.

The operation was canceled.

function upgrade/3 required by behaviour Plug.Conn.Adapter is not implemented (in module Plug.Adapters.Cowboy.Conn)

Application.get_env/3 is discouraged in the module body, use Application.compile_env/3 instead

Supervisor.Spec.worker/3 is deprecated. Use the new child specifications outlined in the Supervisor module instead

System.stacktrace/0 is deprecated. Use __STACKTRACE__ instead

Plug.Adapters.Cowboy.http/3 is deprecated. Use Plug.Cowboy.http/3 instead

Plug.Adapters.Cowboy.shutdown/1 is deprecated. Use Plug.Cowboy.shutdown/1 instead

FakeSystem.cmd/2 is undefined (module FakeSystem is not available or is yet to be defined)

FakeSystem.cmd/3 is undefined (module FakeSystem is not available or is yet to be defined)

variable "k" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "opts" is unused (if the variable is not meant to be used, prefix it with an underscore)