source/weather_forecast.d(94,11): Error: delegate `httpGet(string url, void delegate(int status, string response) cb)` is not callable using argument types `(const(string), void delegate(int status, string response) @system)`
source/weather_forecast.d(94,11):        cannot pass argument `__dgliteral3` of type `void delegate(int status, string response) @system` to parameter `void delegate(int status, string response) cb`
/opt/dmd-safe/dmd/dmd-safe failed with exit code 1.