thread '<unnamed>' panicked at 'error retrieving column 4: Error(Conversion(WasNull))', /root/.cargo/registry/src/github.com-1ecc6299db9ec823/postgres-0.15.2/src/rows.rs:201:31
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:47
   3: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:36
   4: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:200
   5: std::panicking::default_hook
             at src/libstd/panicking.rs:214
   6: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:477
   7: std::panicking::continue_panic_fmt
             at src/libstd/panicking.rs:384
   8: std::panicking::begin_panic_fmt
             at src/libstd/panicking.rs:339
   9: postgres::rows::Row::get
  10: cratesfyi::web::releases::get_releases
  11: <F as iron::middleware::Handler>::handle
  12: <alloc::boxed::Box<dyn iron::middleware::Handler> as iron::middleware::Handler>::handle
  13: router::router::Router::handle_method
  14: <router::router::Router as iron::middleware::Handler>::handle
  15: iron::middleware::Chain::continue_from_handler
  16: <iron::middleware::Chain as iron::middleware::Handler>::handle
  17: <alloc::boxed::Box<dyn iron::middleware::Handler> as iron::middleware::Handler>::handle
  18: <cratesfyi::web::CratesfyiHandler as iron::middleware::Handler>::handle
  19: <iron::iron::RawHandler<H> as hyper::server::Handler>::handle
  20: hyper::server::Worker<H>::handle_connection
  21: hyper::server::listener::spawn_with::{{closure}}