Task.await timeout which is causing GenServer to terminate - asynchronous

Question

My Genserver terminates after a little while, after sending a few http requests. I can't understand the reason:
[error] GenServer MyGenServer terminating
** (stop) exited in: Task.await(%Task{owner: #PID<0.420.0>, pid: #PID<0.1054.0>, ref: #Reference<....>}, 5000)
** (EXIT) time out
(elixir) lib/task.ex:416: Task.await/2
(elixir) lib/enum.ex:966: Enum.flat_map_list/2
(my_app123) lib/my_genserver.ex:260: MyApp.MyGenServer.do_work/1
(my_app123) lib/my_genserver.ex:180: MyApp.MyGenServer.handle_info/2
(stdlib) gen_server.erl:601: :gen_server.try_dispatch/4
(stdlib) gen_server.erl:683: :gen_server.handle_msg/5
(stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
Last message: :tick
State: [%{var1: "fdsafdsfd", var2: "43243242"}]
A chunk of the code:
# it's called from handle_info
def do_work(some_data) do
Enum.map(some_data, fn(x) ->
Task.async(fn ->
case HTTPoison.post(.....) do
# ...........
Is "Task.async" causing the timeout? But why? Yes, it can take more than 5 seconds to complete, but why does it cause an exception which then terminates GenServer? How to fix it?
About await:
If the timeout is exceeded, await will exit; however, the task will continue to run. When the calling process exits, its exit signal will terminate the task if it is not trapping exits.

Answer 1

As the documentation says, Task.await has a default timeout of 5 seconds after which it exits (terminates) the the calling process. You can increase the timeout like this:
Task.await(task, 60000) # 1 minute
and you can remove the timeout completely by passing :infinity as the timeout instead of a number:
Task.await(task, :infinity)