Discussion on: Web Development with Rust— 02/x: Deploy your first App

error: internal compiler error: src/librustc_mir/transform/generator.rs:715: Broken MIR: generator contains type std::option::Option<cookies::CookieData> in MIR, but typeck only knows about for<'r> {cookies::CookieData, std::sync::Arc<std::sync::RwLock<cookie::jar::CookieJar>>, std::pin::Pin<std::boxed::Box<(dyn core::future::future::Future<Output = http::response::Response<http_service::Body>> + std::marker::Send + 'r)>>, ()}
  --> /Users/shaochenyang/.cargo/registry/src/github.com-1ecc6299db9ec823/tide-0.2.0/src/lib.rs:21:56
   |
21 |           ::futures::future::FutureExt::boxed(async move { $($t)* })
   |                                                          ^^^^^^^^^^
   | 
  ::: /Users/shaochenyang/.cargo/registry/src/github.com-1ecc6299db9ec823/tide-0.2.0/src/middleware/cookies.rs:34:9
   |
34 | /         box_async! {
35 | |             let cookie_data = cx
36 | |                 .extensions_mut()
37 | |                 .remove()
...  |
58 | |             res
59 | |         }
   | |_________- in this macro invocation

thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:578:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
error: aborting due to previous error


note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.37.0-nightly (de7c4e423 2019-06-23) running on x86_64-apple-darwin

note: compiler flags: -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

error: Could not compile `tide`.

To learn more, run the command again with --verbose.