Could not compile tokio on FreeBSD

[publicarray]

I have no experience in rust but I wanted to run cargo install doh-proxy which failed:

[...] 
  Compiling tokio-io v0.1.5
   Compiling tokio-core v0.1.12
   Compiling tokio v0.1.1
error[E0283]: type annotations required: cannot resolve `_: std::convert::Into<mio::Ready>`
   --> .cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.1.1/src/reactor/mod.rs:472:15
    |
472 |         hup() | UnixReady::aio().into()
    |               ^
    |
    = note: required because of the requirements on the impl of `std::ops::BitOr<_>` for `mio::Ready`

error[E0599]: no method named `is_aio` found for type `&mio::Ready` in the current scope
   --> .cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.1.1/src/reactor/mod.rs:490:15
    |
490 |         ready.is_aio()
    |               ^^^^^^

error: aborting due to 2 previous errors

error: failed to compile `doh-proxy v0.1.5`, intermediate artifacts can be found at `/tmp/cargo-install.w2YK4Rw6Sysm`

Caused by:
  Could not compile `tokio`.

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

$ rustc -V
rustc 1.22.1
$ freebsd-version
11.1-RELEASE-p6

[publicarray]

Ah thanks for the quick response. While I did search in issues and pull request (like a good internet citizen), I did not search the git history 🤔.

Thanks for your help