all: clippy fixes

ethercat-sys/build.rs

@@ -31,7 +31,7 @@ fn main() {
             .expect("Couldn't write bindings!");
 
         // Generate the EC_IOCTL_ ioctl numbers -- bindgen can't handle them.
-        let code = fs::read_to_string(&format!("{}/master/ioctl.h", path))
+        let code = fs::read_to_string(format!("{}/master/ioctl.h", path))
             .expect("master/ioctl.h not found");
         let mut new = String::new();
         for line in code.split('\n') {

examples/cyclic-data.rs

@@ -64,17 +64,12 @@ pub fn main() -> Result<(), io::Error> {
     }
 }
 
+type SlaveMap = HashMap<SlavePos, HashMap<PdoEntryIndex, (BitLen, Offset)>>;
+
 pub fn init_master(
     esi: &EtherCatInfo,
     idx: u32,
-) -> Result<
-    (
-        Master,
-        DomainIndex,
-        HashMap<SlavePos, HashMap<PdoEntryIndex, (BitLen, Offset)>>,
-    ),
-    io::Error,
-> {
+) -> Result<(Master, DomainIndex, SlaveMap), io::Error> {
     let mut master = Master::open(idx, MasterAccess::ReadWrite)?;
     log::debug!("Reserve master");
     master.reserve()?;

src/master.rs

@@ -183,7 +183,7 @@ impl Master {
             app_time,
             ..
         } = data;
-        let first_device = devices.get(0).ok_or_else(|| Error::NoDevices)?;
+        let first_device = devices.first().ok_or_else(|| Error::NoDevices)?;
         let link_up = first_device.link_state != 0;
         let scan_busy = scan_busy != 0;
         Ok(MasterInfo {