Remove tokio feature

Due to tokio 0.2 being very outdatet.
The code is left in, for when I implement tokio 1.0 support.

.cirrus.yml

@@ -50,7 +50,6 @@ task:
     - cargo check --features mio-uds
     - cargo check --features mio_07
     - cargo check --features mio_08
-    - cargo check --features tokio
   test_script:
     - cargo test --features "mio mio-uds mio_07" --no-fail-fast
   before_cache_script:
@@ -77,12 +76,10 @@ task:
     - # no version of mio-uds compiles
     - cargo build -Z minimal-versions --features mio_07
     - cargo build -Z minimal-versions --features mio_08
-    - cargo build -Z minimal-versions --features tokio
   test_script:
     - cargo test -Z minimal-versions --features mio --no-fail-fast -- --test-threads=1
     - cargo test -Z minimal-versions --features mio_07 --no-fail-fast -- --test-threads=1
     - cargo test -Z minimal-versions --features mio_08 --no-fail-fast -- --test-threads=1
-    - cargo test -Z minimal-versions --features tokio --no-fail-fast -- --test-threads=1
   before_cache_script:
     - rm -rf $HOME/.cargo/registry/index
 

Cargo.toml

@@ -13,9 +13,6 @@ categories = ["os::unix-apis", "asynchronous"]
 edition = "2021"
 exclude = ["tests", "src/bin"]
 
-[features]
-tokio = ["futures", "mio", "tokio_02"]
-
 [target."cfg(unix)".dependencies]
 libc = "0.2.90" # peer credentials for DragonFly BSD and NetBSD, SO_PEERSEC on all Linux architectures
 # enabling this feature implements the extension traits for mio-uds types
@@ -28,11 +25,6 @@ mio_07 = { package = "mio", version = "0.7.6", features = ["os-ext", "net"], opt
 # enabling this feature implements the extension traits for mio 0.8's unix socket types
 # and Source for this crate's non-blocking seqpacket types.
 mio_08 = { package = "mio", version = "0.8", features = ["os-ext", "net"], optional = true }
-futures = {version = "0.3", optional=true}
-tokio_02 = {package="tokio", version = "0.2", features = ["io-driver"], optional=true}
-
-[target."cfg(unix)".dev-dependencies]
-tokio_02 = {package="tokio", version = "0.2", features = ["macros", "rt-core"]}
 
 [package.metadata.docs.rs]
-features = ["mio-uds", "mio", "mio_07", "tokio"]
+features = ["mio-uds", "mio", "mio_07"]

README.md

@@ -58,7 +58,6 @@ Also, some OSes might return the original file descriptor without cloning it if
 | **fd-passing** | Yes | Yes | Yes | Yes | Yes | Yes | No |
 | **abstract addresses** | Yes | N/A | N/A | N/A | N/A | N/A | N/A |
 | **mio (0.6 & 0.7 & 0.8 & uds)** | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
-| **tokio** | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
 | **Tested?** | Locally + CI | CI | CI | CI | Manually<sup>\*</sup> | Manually<sup>\*</sup> | Manually<sup>\*</sup> |
 
 <sup>\*</sup>: Not tested since v0.2.6. (but (cross)checked on CI.)
@@ -102,18 +101,6 @@ uds = {version="0.3.0", features=["mio_07"]}
 uds = {version="0.3.0", features=["mio_08"]}
 ```
 
-## tokio integration
-
-Futures-aware seqpacket types can optionally be used with [tokio](https://github.com/tokio-rs/tokio)
-(version 0.2):
-
-To enable it, add this to Cargo.toml:
-
-```toml
-[dependencies]
-uds = {version="0.3.0", features=["tokio"]}
-```
-
 ## Minimum Rust version
 
 The minimum Rust version is 1.63.  

src/lib.rs

@@ -71,8 +71,6 @@ mod helpers;
 mod ancillary;
 mod traits;
 mod seqpacket;
-#[cfg(feature="tokio")]
-pub mod tokio;
 
 pub use addr::{UnixSocketAddr, UnixSocketAddrRef, AddrName};
 pub use traits::{UnixListenerExt, UnixStreamExt, UnixDatagramExt};