Upgrade nix dependency to v0.25

Author: Nemo157

Cargo.toml

@@ -42,7 +42,7 @@ thiserror = "1.0.20"
 git2 = "0.14.0"
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.20.0"
+nix = "0.25.0"
 
 [target.'cfg(windows)'.dependencies]
 windows-sys = {version = "0.36.1", features = ["Win32_Foundation", "Win32_System_Threading"]}

src/native/unix.rs

@@ -16,11 +16,7 @@ pub(crate) fn kill_process(id: u32) -> Result<(), KillFailedError> {
         Ok(()) => Ok(()),
         Err(err) => Err(KillFailedError {
             pid: id,
-            errno: if let nix::Error::Sys(errno) = err {
-                Some(errno)
-            } else {
-                None
-            },
+            errno: Some(err),
         }),
     }
 }