[minor] Fewer warnings

Cargo.toml

@@ -9,7 +9,7 @@ edition = "2018"
 [dependencies]
 env_logger = "0.8"
 log = "0.4"
-tokio = { version = "1.2", features = ["macros", "rt"]}
+tokio = { version = "1.2", features = ["macros", "rt", "rt-multi-thread"]}
 reqwest = "0.11"
 minidom = "0.13"
 url = { version = "2.2", features = ["serde"] }

src/bin/dummy.rs

@@ -0,0 +1,17 @@
+use my_tasks::client::Client;
+use my_tasks::settings::URL;
+use my_tasks::settings::USERNAME;
+use my_tasks::settings::PASSWORD;
+
+
+#[tokio::main]
+async fn main() {
+    // This is just a function to silence "unused function" warning
+
+    let mut client = Client::new(URL, USERNAME, PASSWORD).unwrap();
+    let calendars = client.get_calendars().await.unwrap();
+    let _ = calendars.iter()
+        .map(|cal| println!("  {}\t{}", cal.name(), cal.url().as_str()))
+        .collect::<()>();
+    let _ = client.get_tasks(&calendars[3].url()).await;
+}

src/lib.rs

@@ -8,7 +8,7 @@
 //! A `Provider` abstracts these two sources by merging them together into one virtual source. \
 //! It also handles synchronisation between the local cache and the server.
 
-mod calendar;
+pub mod calendar;
 pub use calendar::Calendar;
 mod task;
 pub use task::Task;

src/utils.rs

@@ -46,7 +46,6 @@ pub fn print_xml(element: &Element) {
         std::io::stdout(),
         0x20, 4
     );
-    element.to_writer(&mut xml_writer);
-
-    writer.write(&[0x0a]);
+    let _ = element.to_writer(&mut xml_writer);
+    let _ = writer.write(&[0x0a]);
 }

tests/caldav_client.rs

@@ -1,9 +1,6 @@
 //! Some tests of a CalDAV client.
 //! Most of them are not really integration tests, but just development tests that should be cleaned up one day.
 
-use std::error::Error;
-use std::convert::TryFrom;
-
 use reqwest::Method;
 use reqwest::header::CONTENT_TYPE;
 use minidom::Element;
@@ -44,11 +41,11 @@ async fn test_client() {
     let calendars = client.get_calendars().await.unwrap();
 
     println!("Calendars:");
-    calendars.iter()
+    let _ = calendars.iter()
         .map(|cal| println!("  {}\t{}", cal.name(), cal.url().as_str()))
         .collect::<()>();
 
-    client.get_tasks(&calendars[3].url()).await;
+    let _ = client.get_tasks(&calendars[3].url()).await;
 }
 
 #[tokio::test]