Doesn't build with Rust 1.46.0

[link2xt]

Same bug that prevented nightly builds recently: #1835 (comment)

The bug has made it into stable release now.

error: reached the type-length limit while instantiating `std::future::from_generator::<[s...::SendFuture<'t10, ()>, ()}]>}]>`
   |
   = note: consider adding a `#![type_length_limit="2388377"]` attribute to your crate

error: aborting due to previous error

error: could not compile `deltachat`.

[link2xt]

Rust issue: rust-lang/rust#64496

[link2xt]

With #![type_length_limit="2388377"] it builds.

cargo test fails with:

error: reached the type-length limit while instantiating `std::pin::Pin::<&mut std::future...::Future>::poll::{{closure}}#0]>`
    |
    = note: consider adding a `#![type_length_limit="2465609"]` attribute to your crate

error: aborting due to previous error

error: could not compile `deltachat`.

[link2xt]

New upstream issue to watch: rust-lang/rust#54540

It will probably be fixed with this PR: rust-lang/rust#72412

[link2xt]

#72412 is merged now

Another PR to watch which actually disables the check: rust-lang/rust#76772

[link2xt]

Nightly rustc 1.48.0-nightly (bbc677480 2020-09-18) already works.

[r10s]

great! thanks for following that issue!