diff --git a/melib/src/backends.rs b/melib/src/backends.rs
index 97e969f42..cc913b8e9 100644
--- a/melib/src/backends.rs
+++ b/melib/src/backends.rs
@@ -287,7 +287,7 @@ pub trait MailBackend: ::std::fmt::Debug + Send + Sync {
     fn operation(&self, hash: EnvelopeHash) -> Box<dyn BackendOp>;
 
     fn save(&self, bytes: &[u8], mailbox: &str, flags: Option<Flag>) -> Result<()>;
-    fn delete(&self, env_hash: EnvelopeHash) -> Result<()> {
+    fn delete(&self, _env_hash: EnvelopeHash) -> Result<()> {
         Err(MeliError::new("Unimplemented."))
     }
     fn tags(&self) -> Option<Arc<RwLock<BTreeMap<u64, String>>>> {
diff --git a/src/managesieve.rs b/src/managesieve.rs
index 5e2f9a5b0..6a647b036 100644
--- a/src/managesieve.rs
+++ b/src/managesieve.rs
@@ -23,9 +23,7 @@
 extern crate melib;
 use melib::*;
 
-use std::alloc::System;
 use std::collections::VecDeque;
-use std::path::{Path, PathBuf};
 extern crate notify_rust;
 extern crate xdg_utils;
 #[macro_use]
@@ -43,7 +41,6 @@ extern crate serde_json;
 extern crate smallvec;
 
 use melib::backends::imap::managesieve::new_managesieve_connection;
-use melib::AccountSettings;
 use melib::Result;
 
 mod unix;
@@ -126,7 +123,7 @@ fn main() -> Result<()> {
         use std::io::Write;
         input.clear();
         print!("> ");
-        io::stdout().flush();
+        io::stdout().flush().unwrap();
         match io::stdin().read_line(&mut input) {
             Ok(_) => {
                 if input.trim().eq_ignore_ascii_case("logout") {