tokio v1.18.1 not compiling on Windows 10

[Sid-Shanker]

Version
1.18.1

Platform
Windows 64-bit

Description
I was trying to follow actix web development tutorial on its official page : https://actix.rs/docs/getting-started/. Current actix-web version is 4, which uses rust version 1.54 or later. I had rust version 1.46 already installed, so as per instruction on this page i updated it using rustup update and now current version of rust on my system is 1.60.
When I try to build the project, then it gives me compilation error like this:

Downloaded 113 crates (14.9 MB) in 13.43s (largest was `windows-sys` at 3.3 MB)
   Compiling tokio v1.18.1
error[E0432]: unresolved import `crate::winapi::um::fileapi`
  --> C:\Users\Shanker\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.18.1\src\net\windows\named_pipe.rs:24:20
   |
24 |     pub(super) use crate::winapi::um::fileapi;
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ no `fileapi` in `um`

error[E0432]: unresolved import `crate::winapi::um::handleapi`
  --> C:\Users\Shanker\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.18.1\src\net\windows\named_pipe.rs:25:20
   |
25 |     pub(super) use crate::winapi::um::handleapi;
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `handleapi` in `um`

error[E0432]: unresolved import `crate::winapi::um::winbase`
  --> C:\Users\Shanker\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.18.1\src\net\windows\named_pipe.rs:27:20
   |
27 |     pub(super) use crate::winapi::um::winbase;
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ no `winbase` in `um`

error[E0308]: mismatched types
    --> C:\Users\Shanker\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.18.1\src\net\windows\named_pipe.rs:2125:42
     |
2125 |         NamedPipeServer::from_raw_handle(h)
     |                                          ^ expected enum `std::ffi::c_void`, found enum `winapi::ctypes::c_void`
     |
     = note: expected raw pointer `*mut std::ffi::c_void`
                found raw pointer `*mut winapi::ctypes::c_void`

error[E0308]: mismatched types
    --> C:\Users\Shanker\.cargo\registry\src\github.com-1ecc6299db9ec823\tokio-1.18.1\src\net\windows\named_pipe.rs:2385:9
     |
2385 |         handle,
     |         ^^^^^^ expected enum `winapi::ctypes::c_void`, found enum `std::ffi::c_void`
     |
     = note: expected raw pointer `*mut winapi::ctypes::c_void`
                found raw pointer `*mut std::ffi::c_void`

Some errors have detailed explanations: E0308, E0432.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `tokio` due to 5 previous errors

After some searching about it, i found one suggestion that it could be due to cached crates, so i did cargo clean and then also I manually removed the whole registry folder in C:\Users\myuser\.cargo\registry but still when building the project, its gives me same error.

[jonhoo]

I see this in CI as well.

[Darksonn]

This is due to mio switching from winapi to windows-sys. In the mean time, you can fix it by adding the following dependency.

winapi = { version = "0.3.9", features = ["std", "winsock2", "mswsock", "handleapi", "ws2ipdef", "ws2tcpip"] }

or by downgrading to mio version 0.8.2.

[Sid-Shanker]

This is due to mio switching from winapi to windows-sys. In the mean time, you can fix it by adding the following dependency.

winapi = { version = "0.3.9", features = ["std", "winsock2", "mswsock", "handleapi", "ws2ipdef", "ws2tcpip"] }

or by downgrading to mio version 0.8.2.

It worked after adding this dependency. Thanks

[Darksonn]

This will be released shortly in #4666.