diff --git a/redox-ioctl/src/drm.rs b/redox-ioctl/src/drm.rs
index 327eb4b4f9..2e636f5e81 100644
--- a/redox-ioctl/src/drm.rs
+++ b/redox-ioctl/src/drm.rs
@@ -11,7 +11,7 @@ pub use drm_sys::{
     drm_mode_cursor2, drm_mode_destroy_dumb, drm_mode_fb_cmd, drm_mode_fb_cmd2, drm_mode_get_blob,
     drm_mode_get_connector, drm_mode_get_encoder, drm_mode_get_plane, drm_mode_get_plane_res,
     drm_mode_get_property, drm_mode_map_dumb, drm_mode_modeinfo, drm_mode_obj_get_properties,
-    drm_mode_property_enum, drm_set_client_cap, drm_version, drm_mode_set_plane
+    drm_mode_property_enum, drm_mode_set_plane, drm_set_client_cap, drm_version,
 };
 
 pub const VERSION: u64 = 0;
diff --git a/src/header/arpa_inet/mod.rs b/src/header/arpa_inet/mod.rs
index 04f2cc6881..8ab7f8bfe6 100644
--- a/src/header/arpa_inet/mod.rs
+++ b/src/header/arpa_inet/mod.rs
@@ -213,13 +213,13 @@ pub unsafe extern "C" fn inet_pton(af: c_int, src: *const c_char, dst: *mut c_vo
         };
         let src_cstr = unsafe { CStr::from_ptr(src) };
         let mut octets = unsafe { str::from_utf8_unchecked(src_cstr.to_bytes()).split('.') };
-        for i in 0..4 {
+        for part in s_addr.iter_mut().take(4) {
             if let Some(n) = octets
                 .next()
                 .filter(|x| !x.len() > 3)
                 .and_then(|x| u8::from_str(x).ok())
             {
-                s_addr[i] = n;
+                *part = n;
             } else {
                 return 0;
             }
diff --git a/src/header/poll/mod.rs b/src/header/poll/mod.rs
index a01bb2d73b..7ce2c7ff21 100644
--- a/src/header/poll/mod.rs
+++ b/src/header/poll/mod.rs
@@ -66,8 +66,8 @@ pub unsafe fn poll_epoll(fds: &mut [pollfd], timeout: c_int, sigmask: *const sig
     };
 
     let mut closed = 0;
-    for i in 0..fds.len() {
-        let pfd = &mut fds[i];
+    for (i, fd) in fds.iter_mut().enumerate() {
+        let pfd = fd;
 
         pfd.revents = 0;