Unexpected :ssh_sftp :timeout after SIGINT

Sorry, I should have included this in the first place. Here’s the stack trace for the timeout:

[
  {:gen_server, :call, 2, [file: ~c"gen_server.erl", line: 370]}, 
  {:ssh_transport, :default_algorithms, 0, [file: ~c"ssh_transport.erl", line: 96]}, 
  {:ssh_options, :default, 1, [file: ~c"ssh_options.erl", line: 727]}, 
  {:ssh_options, :default, 1, [file: ~c"ssh_options.erl", line: 602]}, 
  {:ssh_options, :handle_options, 3, [file: ~c"ssh_options.erl", line: 184]}, 
  {:ssh, :connect, 4, [file: ~c"ssh.erl", line: 187]}, 
  {:ssh_sftp, :start_channel, 3, [file: ~c"ssh_sftp.erl", line: 200]}, 
  {MyApp.SftpClient, :start, 1, [file: ~c"lib/sftp_client.ex", line: 59]}
]

and the beginning of the error:

{:timeout, {:gen_server, :call, [:application_controller, {:set_env, :ssh, :"$def-algs$",  ... (a long list of encryption algs, presumably configuration)...