fix build warnings & add CI

.azure/azure-pipelines.yml

@@ -21,5 +21,7 @@ steps:
       rustc -Vv
       echo "##vso[task.prependpath]$HOME/.cargo/bin"
     displayName: Install Rust
+  - bash: RUSTFLAGS="-D warnings" cargo build --all-features
+    displayName: Build
   - bash: RUSTFLAGS="-D warnings" cargo test
     displayName: Run tests

src/commands/config.rs

@@ -114,7 +114,7 @@ pub fn config(
         let key = v.to_string();
 
         if result.contains_key(&key) {
-            result.remove(&key);
+            result.swap_remove(&key);
             config::write_config(&result)?;
         } else {
             return Err(ShellError::string(&format!(

src/plugins/binaryview.rs

@@ -435,7 +435,7 @@ pub fn view_contents_interactive(
     let cursor = cursor();
     let _ = cursor.show();
 
-    let screen = RawScreen::disable_raw_mode();
+    let _screen = RawScreen::disable_raw_mode();
 
     Ok(())
 }