Build with latest libs

src/audio/alsa/backend.rs

@@ -126,7 +126,7 @@ impl AudioFrontend for AlsaBackend {
     }
 
     fn card_name(&self) -> Result<String> {
-        return self.acard.borrow().card.get_name().from_err();
+        return Ok(self.acard.borrow().card.get_name()?);
     }
 
     fn chan_name(&self) -> Result<String> {

src/support/alsa.rs

@@ -95,7 +95,7 @@ pub fn alsa_card_has_playable_selem(card: &Card) -> bool {
 
 /// Get the `Mixer` for the given alsa card.
 pub fn get_mixer(card: &Card) -> Result<Mixer> {
-    return Mixer::new(&format!("hw:{}", card.get_index()), false).from_err();
+    return Ok(Mixer::new(&format!("hw:{}", card.get_index()), false)?);
 }
 
 

src/support/cmd.rs

@@ -24,9 +24,8 @@ pub fn execute_vol_control_command(prefs: &Prefs) -> Result<()> {
 
 /// Try to execute the given command asynchronously via gtk.
 pub fn execute_command(cmd: &str) -> Result<()> {
-    return glib::spawn_command_line_async(cmd)
+    return Ok(glib::spawn_command_line_async(cmd)
         .map_err(|e| {
             std::io::Error::new(std::io::ErrorKind::Other, e.description())
-        })
-        .from_err();
+        })?);
 }