@@ -109,7 +109,7 @@ impl Device {
109109 }
110110 use std:: io:: ErrorKind :: AlreadyExists ;
111111 let info = "no avaiable file descriptor" ;
112- return Err ( Error :: Io ( std:: io:: Error :: new ( AlreadyExists , info) . into ( ) ) ) ;
112+ return Err ( Error :: Io ( std:: io:: Error :: new ( AlreadyExists , info) ) ) ;
113113 } ;
114114 ( tun, device_name)
115115 }
@@ -173,7 +173,7 @@ impl Device {
173173 let route = Route {
174174 addr,
175175 netmask : mask,
176- dest : dest ,
176+ dest,
177177 } ;
178178 if let Err ( e) = self . set_route ( route) {
179179 log:: warn!( "{e:?}" ) ;
@@ -344,8 +344,8 @@ impl AbstractDevice for Device {
344344
345345 fn set_address ( & mut self , value : IpAddr ) -> Result < ( ) > {
346346 unsafe {
347- let mut req = self . request ( ) ;
348- if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & mut req) {
347+ let req = self . request ( ) ;
348+ if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & req) {
349349 return Err ( std:: io:: Error :: from ( err) . into ( ) ) ;
350350 }
351351 let previous = self . route . as_ref ( ) . ok_or ( Error :: InvalidConfig ) ?;
@@ -371,8 +371,8 @@ impl AbstractDevice for Device {
371371
372372 fn set_destination ( & mut self , value : IpAddr ) -> Result < ( ) > {
373373 unsafe {
374- let mut req = self . request ( ) ;
375- if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & mut req) {
374+ let req = self . request ( ) ;
375+ if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & req) {
376376 return Err ( std:: io:: Error :: from ( err) . into ( ) ) ;
377377 }
378378 let previous = self . route . as_ref ( ) . ok_or ( Error :: InvalidConfig ) ?;
@@ -414,8 +414,8 @@ impl AbstractDevice for Device {
414414
415415 fn set_netmask ( & mut self , value : IpAddr ) -> Result < ( ) > {
416416 unsafe {
417- let mut req = self . request ( ) ;
418- if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & mut req) {
417+ let req = self . request ( ) ;
418+ if let Err ( err) = siocdifaddr ( self . ctl . as_raw_fd ( ) , & req) {
419419 return Err ( std:: io:: Error :: from ( err) . into ( ) ) ;
420420 }
421421 let previous = self . route . as_ref ( ) . ok_or ( Error :: InvalidConfig ) ?;
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