diff --git a/build.rs b/build.rs
index c8554b4..7cb5ef9 100644
--- a/build.rs
+++ b/build.rs
@@ -80,10 +80,11 @@ fn bindgen() {
 
 #[cfg(windows)]
 fn bindgen() {
-    let out_path = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap()).join(BINDINGS);
+    let out_path =
+        std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap_or_default()).join(BINDINGS);
     windows_bindgen::bindgen([
         "--out",
-        out_path.to_str().unwrap(),
+        out_path.to_str().unwrap_or_default(),
         "--config",
         "flatten",
         "no-inner-attributes",
diff --git a/src/linux.rs b/src/linux.rs
index ecd389d..1a33df8 100644
--- a/src/linux.rs
+++ b/src/linux.rs
@@ -6,8 +6,7 @@
 
 use std::{
     ffi::CStr,
-    io::{Error, ErrorKind, Read, Result, Write},
-    mem::size_of,
+    io::{Error, ErrorKind, Read as _, Result, Write as _},
     net::IpAddr,
     num::TryFromIntError,
     ptr, slice,