Fix Clippy lints & GitHub Action improvements (#74)

* ci: improve

- run on all branches to test things
- no cargo color, it destroys actions-rs/cargo features
- update versions

* refactor(lint): fix clippy issues

* refactor(lint): fix more clippy issues

src/storage/loop_device.rs

@@ -30,7 +30,7 @@ impl LoopDevice {
         );
         info!("Mounted {} to {}", file.display(), path.display());
 
-        Ok(LoopDevice { path, losetup })
+        Ok(Self { path, losetup })
     }
 
     pub fn path(&self) -> &Path {

src/storage/removeable_devices.rs

@@ -68,7 +68,7 @@ pub fn get_storage_devices(allow_non_removable: bool) -> anyhow::Result<Vec<Devi
                     .context("Could not parse block size to unsigned integer (u128)")?
                     * 512,
             ),
-        })
+        });
     }
 
     Ok(result)

src/storage/storage_device.rs

@@ -21,7 +21,7 @@ impl<'a> StorageDevice<'a> {
             .context("Error querying information about the block device")?;
         let device_name = path
             .file_name()
-            .and_then(|s| s.to_str())
+            .and_then(std::ffi::OsStr::to_str)
             .map(String::from)
             .ok_or_else(|| anyhow!("Invalid device name: {}", path.display()))?;