fix warnings

serial-core/src/lib.rs

@@ -492,7 +492,10 @@ pub trait SerialPort: io::Read + io::Write {
     ///     })
     /// }
     /// ```
-    fn reconfigure(&mut self, setup: &Fn(&mut SerialPortSettings) -> ::Result<()>) -> ::Result<()>;
+    fn reconfigure(
+        &mut self,
+        setup: &dyn Fn(&mut dyn SerialPortSettings) -> ::Result<()>,
+    ) -> ::Result<()>;
 
     /// Sets the state of the RTS (Request To Send) control signal.
     ///
@@ -585,9 +588,9 @@ impl<T> SerialPort for T
     }
 
     fn configure(&mut self, settings: &PortSettings) -> ::Result<()> {
-        let mut device_settings = try!(T::read_settings(self));
+        let mut device_settings = T::read_settings(self)?;
 
-        try!(device_settings.set_baud_rate(settings.baud_rate));
+        device_settings.set_baud_rate(settings.baud_rate)?;
         device_settings.set_char_size(settings.char_size);
         device_settings.set_parity(settings.parity);
         device_settings.set_stop_bits(settings.stop_bits);
@@ -596,9 +599,12 @@ impl<T> SerialPort for T
         T::write_settings(self, &device_settings)
     }
 
-    fn reconfigure(&mut self, setup: &Fn(&mut SerialPortSettings) -> ::Result<()>) -> ::Result<()> {
-        let mut device_settings = try!(T::read_settings(self));
-        try!(setup(&mut device_settings));
+    fn reconfigure(
+        &mut self,
+        setup: &dyn Fn(&mut dyn SerialPortSettings) -> ::Result<()>,
+    ) -> ::Result<()> {
+        let mut device_settings = T::read_settings(self)?;
+        setup(&mut device_settings)?;
         T::write_settings(self, &device_settings)
     }
 

serial-unix/src/error.rs

@@ -1,6 +1,5 @@
 use core;
 
-use std::error::Error;
 use std::ffi::CStr;
 use std::io;
 use std::str;
@@ -30,7 +29,7 @@ pub fn from_io_error(io_error: io::Error) -> core::Error {
     match io_error.raw_os_error() {
         Some(errno) => from_raw_os_error(errno),
         None => {
-            let description = io_error.description().to_string();
+            let description = io_error.to_string();
 
             core::Error::new(core::ErrorKind::Io(io_error.kind()), description)
         }

serial-unix/src/tty.rs

@@ -79,8 +79,8 @@ impl TTYPort {
         }
 
         // apply initial settings
-        let settings = try!(port.read_settings());
-        try!(port.write_settings(&settings));
+        let settings = port.read_settings()?;
+        port.write_settings(&settings)?;
 
         Ok(port)
     }
@@ -126,7 +126,7 @@ impl AsRawFd for TTYPort {
 
 impl io::Read for TTYPort {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        try!(super::poll::wait_read_fd(self.fd, self.timeout));
+        super::poll::wait_read_fd(self.fd, self.timeout)?;
 
         let len = unsafe {
             libc::read(self.fd, buf.as_ptr() as *mut c_void, buf.len() as size_t)
@@ -143,7 +143,7 @@ impl io::Read for TTYPort {
 
 impl io::Write for TTYPort {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        try!(super::poll::wait_write_fd(self.fd, self.timeout));
+        super::poll::wait_write_fd(self.fd, self.timeout)?;
 
         let len = unsafe {
             libc::write(self.fd, buf.as_ptr() as *mut c_void, buf.len() as size_t)

serial-windows/src/com.rs

@@ -58,7 +58,7 @@ impl COMPort {
                 timeout: timeout,
             };
 
-            try!(port.set_timeout(timeout));
+            port.set_timeout(timeout)?;
             Ok(port)
         }
         else {