missing `:on` in join, defaulting to `on: true`.

missing `:on` in join, defaulting to `on: true`.

"not expr1 in expr2" is deprecated, use "expr1 not in expr2" instead

Application.get_env/2 is discouraged in the module body, use Application.compile_env/3 instead

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

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

default values for the optional arguments in to_url/3 are never used

Supervisor.Spec.supervise/2 is deprecated. Use the new child specifications outlined in the Supervisor module instead

Supervisor.Spec.supervisor/2 is deprecated. Use the new child specifications outlined in the Supervisor module instead

Mix.Project.compile/1 is deprecated. Use Mix.Task.run("compile", args) instead