diff --git a/melib/src/error.rs b/melib/src/error.rs
index 12216b24..657dd38d 100644
--- a/melib/src/error.rs
+++ b/melib/src/error.rs
@@ -63,7 +63,6 @@ impl Into<String> for MeliError {
     }
 }
 
-
 impl Error for MeliError {
     fn description(&self) -> &str {
         &self.details
diff --git a/melib/src/mailbox.rs b/melib/src/mailbox.rs
index a8054409..49cc35c6 100644
--- a/melib/src/mailbox.rs
+++ b/melib/src/mailbox.rs
@@ -29,8 +29,8 @@ pub mod email;
 pub use self::email::*;
 /* Mail backends. Currently only maildir is supported */
 pub mod backends;
-use crate::error::Result;
 use self::backends::Folder;
+use crate::error::Result;
 pub mod thread;
 pub use self::thread::{SortField, SortOrder, ThreadNode, Threads};
 
diff --git a/melib/src/mailbox/backends/maildir/backend.rs b/melib/src/mailbox/backends/maildir/backend.rs
index 1ae6c627..35e507fe 100644
--- a/melib/src/mailbox/backends/maildir/backend.rs
+++ b/melib/src/mailbox/backends/maildir/backend.rs
@@ -19,14 +19,14 @@
  * along with meli. If not, see <http://www.gnu.org/licenses/>.
  */
 
-use super::{MaildirFolder, MaildirOp};
-use crate::async_workers::*;
-use crate::conf::AccountSettings;
-use crate::error::{MeliError, Result};
 use super::{
     BackendFolder, BackendOp, Folder, FolderHash, MailBackend, RefreshEvent, RefreshEventConsumer,
     RefreshEventKind::*,
 };
+use super::{MaildirFolder, MaildirOp};
+use crate::async_workers::*;
+use crate::conf::AccountSettings;
+use crate::error::{MeliError, Result};
 use crate::mailbox::email::{Envelope, EnvelopeHash};
 
 use notify::{watcher, DebouncedEvent, RecursiveMode, Watcher};
@@ -36,7 +36,6 @@ use std::sync::mpsc::channel;
 //use std::sync::mpsc::sync_channel;
 //use std::sync::mpsc::SyncSender;
 //use std::time::Duration;
-use std::thread;
 use fnv::{FnvHashMap, FnvHasher};
 use std::collections::hash_map::DefaultHasher;
 use std::ffi::OsStr;
@@ -47,6 +46,7 @@ use std::ops::{Deref, DerefMut};
 use std::path::{Component, Path, PathBuf};
 use std::result;
 use std::sync::{Arc, Mutex};
+use std::thread;
 
 #[derive(Debug, Default)]
 pub struct HashIndex {
@@ -344,13 +344,26 @@ eprintln!("DEBUG: hash {}, path: {} couldn't be parsed in `add_path_to_index`",
                 path.push("cur");
                 {
                     let mut rand_buf = [0u8; 16];
-                    let mut f = fs::File::open("/dev/urandom").expect("Could not open /dev/urandom for reading");
-                    f.read_exact(&mut rand_buf).expect("Could not read from /dev/urandom/");
+                    let mut f = fs::File::open("/dev/urandom")
+                        .expect("Could not open /dev/urandom for reading");
+                    f.read_exact(&mut rand_buf)
+                        .expect("Could not read from /dev/urandom/");
                     let mut hostn_buf = String::with_capacity(256);
-                    let mut f = fs::File::open("/etc/hostname").expect("Could not open /etc/hostname for reading");
-                    f.read_to_string(&mut hostn_buf).expect("Could not read from /etc/hostname");
-                    let timestamp = std::time::SystemTime::now().duration_since(std::time::SystemTime::UNIX_EPOCH).unwrap().as_millis();
-                    path.push(&format!("{}.{:x}_{}.{}:2,", timestamp, u128::from_be_bytes(rand_buf), std::process::id(), hostn_buf.trim()));
+                    let mut f = fs::File::open("/etc/hostname")
+                        .expect("Could not open /etc/hostname for reading");
+                    f.read_to_string(&mut hostn_buf)
+                        .expect("Could not read from /etc/hostname");
+                    let timestamp = std::time::SystemTime::now()
+                        .duration_since(std::time::SystemTime::UNIX_EPOCH)
+                        .unwrap()
+                        .as_millis();
+                    path.push(&format!(
+                        "{}.{:x}_{}.{}:2,",
+                        timestamp,
+                        u128::from_be_bytes(rand_buf),
+                        std::process::id(),
+                        hostn_buf.trim()
+                    ));
                 }
                 if cfg!(feature = "debug_log") {
                     eprintln!("saving at {}", path.display());
@@ -363,8 +376,8 @@ eprintln!("DEBUG: hash {}, path: {} couldn't be parsed in `add_path_to_index`",
         }
 
         Err(MeliError::new(format!(
-                    "'{}' is not a valid folder.",
-                    folder
+            "'{}' is not a valid folder.",
+            folder
         )))
     }
 }
@@ -409,7 +422,7 @@ impl MaildirType {
                 }
             }
         }
-        
+
         if folders.is_empty() {
             recurse_folders(&mut folders, &path);
         } else {
diff --git a/melib/src/mailbox/collection.rs b/melib/src/mailbox/collection.rs
index a44d895d..72bec79a 100644
--- a/melib/src/mailbox/collection.rs
+++ b/melib/src/mailbox/collection.rs
@@ -103,7 +103,11 @@ impl Collection {
         env.set_hash(new_hash);
         self.envelopes.insert(new_hash, env);
         {
-            if self.threads.update_envelope(old_hash, new_hash, &self.envelopes).is_ok() {
+            if self
+                .threads
+                .update_envelope(old_hash, new_hash, &self.envelopes)
+                .is_ok()
+            {
                 return;
             }
         }
@@ -119,7 +123,11 @@ impl Collection {
         let new_hash = envelope.hash();
         self.envelopes.insert(new_hash, envelope);
         {
-            if self.threads.update_envelope(old_hash, new_hash, &self.envelopes).is_ok() {
+            if self
+                .threads
+                .update_envelope(old_hash, new_hash, &self.envelopes)
+                .is_ok()
+            {
                 return;
             }
         }
diff --git a/melib/src/mailbox/email.rs b/melib/src/mailbox/email.rs
index 78f17ea8..86af2283 100644
--- a/melib/src/mailbox/email.rs
+++ b/melib/src/mailbox/email.rs
@@ -32,8 +32,8 @@ pub use crate::attachments::*;
 pub mod parser;
 use parser::BytesExt;
 
-use crate::error::{MeliError, Result};
 use super::backends::BackendOp;
+use crate::error::{MeliError, Result};
 
 use std::borrow::Cow;
 use std::cmp::Ordering;
diff --git a/melib/src/mailbox/email/attachments.rs b/melib/src/mailbox/email/attachments.rs
index a3929012..ec126ca2 100644
--- a/melib/src/mailbox/email/attachments.rs
+++ b/melib/src/mailbox/email/attachments.rs
@@ -18,10 +18,10 @@
  * You should have received a copy of the GNU General Public License
  * along with meli. If not, see <http://www.gnu.org/licenses/>.
  */
-use data_encoding::BASE64_MIME;
 use crate::mailbox::email::parser;
 use crate::mailbox::email::parser::BytesExt;
 use crate::mailbox::email::EnvelopeWrapper;
+use data_encoding::BASE64_MIME;
 use std::fmt;
 use std::str;
 
diff --git a/melib/src/mailbox/email/compose.rs b/melib/src/mailbox/email/compose.rs
index 9841c5c8..2c691647 100644
--- a/melib/src/mailbox/email/compose.rs
+++ b/melib/src/mailbox/email/compose.rs
@@ -1,7 +1,7 @@
 use super::*;
+use crate::mailbox::backends::BackendOp;
 use chrono::{DateTime, Local};
 use data_encoding::BASE64_MIME;
-use crate::mailbox::backends::BackendOp;
 use std::str;
 
 mod mime;
diff --git a/melib/src/mailbox/thread.rs b/melib/src/mailbox/thread.rs
index 2a91b53c..c9a1c55c 100644
--- a/melib/src/mailbox/thread.rs
+++ b/melib/src/mailbox/thread.rs
@@ -1339,7 +1339,9 @@ fn node_build(
 
     let mut has_unseen = if let Some(msg) = thread_nodes[idx].message {
         !collection[&msg].is_seen()
-    } else { false };
+    } else {
+        false
+    };
     let mut child_vec: Vec<ThreadTree> = Vec::new();
 
     thread_nodes[idx].len = thread_nodes[idx].children.len();
diff --git a/src/bin.rs b/src/bin.rs
index c90a13c9..f757a405 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -29,7 +29,6 @@ use std::alloc::System;
 #[global_allocator]
 static GLOBAL: System = System;
 
-
 use ui;
 
 pub use melib::*;
diff --git a/ui/src/components/contacts/contact_list.rs b/ui/src/components/contacts/contact_list.rs
index 8932650d..3554b5b5 100644
--- a/ui/src/components/contacts/contact_list.rs
+++ b/ui/src/components/contacts/contact_list.rs
@@ -74,7 +74,12 @@ impl ContactList {
         if self.id_positions.capacity() < book.len() {
             self.id_positions.reserve(book.len());
         }
-        let mut maxima = ("First Name".len(), "Last Name".len(), "E-mail".len(), "URL".len());
+        let mut maxima = (
+            "First Name".len(),
+            "Last Name".len(),
+            "E-mail".len(),
+            "URL".len(),
+        );
 
         for c in book.values() {
             self.id_positions.push(*c.id());
@@ -94,7 +99,7 @@ impl ContactList {
             Color::Default,
             ((0, 0), (MAX_COLS - 1, self.length)),
             false,
-            );
+        );
         write_string_to_grid(
             "Last Name",
             &mut self.content,
@@ -102,15 +107,15 @@ impl ContactList {
             Color::Default,
             ((maxima.0, 0), (MAX_COLS - 1, self.length)),
             false,
-            );
+        );
         write_string_to_grid(
             "E-mail",
             &mut self.content,
             Color::Default,
             Color::Default,
-            (( maxima.1, 0), (MAX_COLS - 1, self.length)),
+            ((maxima.1, 0), (MAX_COLS - 1, self.length)),
             false,
-            );
+        );
         write_string_to_grid(
             "URL",
             &mut self.content,
@@ -118,7 +123,7 @@ impl ContactList {
             Color::Default,
             ((maxima.2, 0), (MAX_COLS - 1, self.length)),
             false,
-            );
+        );
         for (i, c) in book.values().enumerate() {
             self.id_positions.push(*c.id());
 
@@ -143,12 +148,13 @@ impl ContactList {
                 &mut self.content,
                 Color::Default,
                 Color::Default,
-                (( maxima.1, i + 1), (MAX_COLS - 1, self.length)),
+                ((maxima.1, i + 1), (MAX_COLS - 1, self.length)),
                 false,
             );
             write_string_to_grid(
                 c.url(),
-                &mut self.content, Color::Default,
+                &mut self.content,
+                Color::Default,
                 Color::Default,
                 ((maxima.2, i + 1), (MAX_COLS - 1, self.length)),
                 false,
diff --git a/ui/src/components/mail/compose.rs b/ui/src/components/mail/compose.rs
index ac1f2929..268bd444 100644
--- a/ui/src/components/mail/compose.rs
+++ b/ui/src/components/mail/compose.rs
@@ -426,7 +426,7 @@ impl Component for Composer {
     fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
         match (&mut self.mode, &mut self.reply_context, &event.event_type) {
             // don't pass Reply command to thread view in reply_context
-            (_, _, UIEventType::Input(Key::Char('R'))) => {},
+            (_, _, UIEventType::Input(Key::Char('R'))) => {}
             (ViewMode::Overview, Some((_, ref mut view)), _) => {
                 if view.process_event(event, context) {
                     self.dirty = true;
@@ -501,7 +501,10 @@ impl Component for Composer {
                             }
                             context.replies.push_back(UIEvent {
                                 id: 0,
-                                event_type: UIEventType::Notification(Some("Could not save draft.".into()), e.into())
+                                event_type: UIEventType::Notification(
+                                    Some("Could not save draft.".into()),
+                                    e.into(),
+                                ),
                             });
                         }
                         context.replies.push_back(UIEvent {
@@ -607,8 +610,7 @@ impl Component for Composer {
 
     fn get_shortcuts(&self, context: &Context) -> ShortcutMap {
         let mut map = if self.mode.is_overview() {
-            self.pager
-                .get_shortcuts(context)
+            self.pager.get_shortcuts(context)
         } else {
             Default::default()
         };
@@ -619,21 +621,12 @@ impl Component for Composer {
         }
 
         if self.mode.is_overview() {
-            map.insert(
-                "Switch to edit mode",
-                Key::Char('o')
-            );
+            map.insert("Switch to edit mode", Key::Char('o'));
         }
         if self.mode.is_edit() {
-            map.insert(
-                "Switch to overview",
-                Key::Char('v')
-            );
+            map.insert("Switch to overview", Key::Char('v'));
         }
-        map.insert(
-            "Edit in $EDITOR",
-            Key::Char('e')
-        );
+        map.insert("Edit in $EDITOR", Key::Char('e'));
 
         map
     }
diff --git a/ui/src/components/mail/listing.rs b/ui/src/components/mail/listing.rs
index 3f538483..9e2371d7 100644
--- a/ui/src/components/mail/listing.rs
+++ b/ui/src/components/mail/listing.rs
@@ -83,7 +83,7 @@ impl Component for Listing {
                         Listing::Plain(_) => {
                             return true;
                         }
-                        Listing::Threaded(l)  => {
+                        Listing::Threaded(l) => {
                             let mut new_l = PlainListing::default();
                             new_l.set_coordinates(l.coordinates());
                             new_l
@@ -102,7 +102,7 @@ impl Component for Listing {
                         Listing::Threaded(_) => {
                             return true;
                         }
-                        Listing::Plain(l)  => {
+                        Listing::Plain(l) => {
                             let mut new_l = ThreadListing::default();
                             new_l.set_coordinates(l.coordinates());
                             new_l
@@ -121,7 +121,7 @@ impl Component for Listing {
                         Listing::Compact(_) => {
                             return true;
                         }
-                        Listing::Threaded(l)  => {
+                        Listing::Threaded(l) => {
                             let mut new_l = CompactListing::default();
                             new_l.set_coordinates(l.coordinates());
                             new_l
diff --git a/ui/src/components/mail/listing/compact.rs b/ui/src/components/mail/listing/compact.rs
index 17ab9e54..a748c372 100644
--- a/ui/src/components/mail/listing/compact.rs
+++ b/ui/src/components/mail/listing/compact.rs
@@ -275,7 +275,8 @@ impl CompactListing {
 
     /// Draw the list of `Envelope`s.
     fn draw_list(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
-        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0 {
+        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0
+        {
             self.refresh_mailbox(context);
         }
         let upper_left = upper_left!(area);
@@ -484,11 +485,15 @@ impl Component for CompactListing {
             UIEventType::RefreshMailbox(_) => {
                 self.dirty = true;
             }
-            UIEventType::MailboxUpdate((ref idxa, ref idxf)) if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 => {
+            UIEventType::MailboxUpdate((ref idxa, ref idxf))
+                if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
-            UIEventType::StartupCheck(ref f) if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) => {
+            UIEventType::StartupCheck(ref f)
+                if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
@@ -534,7 +539,12 @@ impl Component for CompactListing {
         false
     }
     fn is_dirty(&self) -> bool {
-        self.dirty || if self.unfocused { self.view.is_dirty() } else { false }
+        self.dirty
+            || if self.unfocused {
+                self.view.is_dirty()
+            } else {
+                false
+            }
     }
     fn set_dirty(&mut self) {
         if self.unfocused {
diff --git a/ui/src/components/mail/listing/plain.rs b/ui/src/components/mail/listing/plain.rs
index 16368f95..27801887 100644
--- a/ui/src/components/mail/listing/plain.rs
+++ b/ui/src/components/mail/listing/plain.rs
@@ -252,7 +252,8 @@ impl PlainListing {
 
     /// Draw the list of `Envelope`s.
     fn draw_list(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
-        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0 {
+        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0
+        {
             self.refresh_mailbox(context);
         }
         let upper_left = upper_left!(area);
@@ -502,11 +503,15 @@ impl Component for PlainListing {
                 self.dirty = true;
                 self.view = None;
             }
-            UIEventType::MailboxUpdate((ref idxa, ref idxf)) if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 => {
+            UIEventType::MailboxUpdate((ref idxa, ref idxf))
+                if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
-            UIEventType::StartupCheck(ref f) if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) => {
+            UIEventType::StartupCheck(ref f)
+                if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
diff --git a/ui/src/components/mail/listing/thread.rs b/ui/src/components/mail/listing/thread.rs
index 029e5a1c..d1f55aba 100644
--- a/ui/src/components/mail/listing/thread.rs
+++ b/ui/src/components/mail/listing/thread.rs
@@ -48,7 +48,11 @@ pub struct ThreadListing {
 
 impl ListingTrait for ThreadListing {
     fn coordinates(&self) -> (usize, usize, Option<EnvelopeHash>) {
-        (self.cursor_pos.0, self.cursor_pos.1, Some(self.locations[self.cursor_pos.2]))
+        (
+            self.cursor_pos.0,
+            self.cursor_pos.1,
+            Some(self.locations[self.cursor_pos.2]),
+        )
     }
     fn set_coordinates(&mut self, coordinates: (usize, usize, Option<EnvelopeHash>)) {
         self.new_cursor_pos = (coordinates.0, coordinates.1, 0);
@@ -291,7 +295,8 @@ impl ThreadListing {
 
     /// Draw the list of `Envelope`s.
     fn draw_list(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
-        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0 {
+        if self.cursor_pos.1 != self.new_cursor_pos.1 || self.cursor_pos.0 != self.new_cursor_pos.0
+        {
             self.refresh_mailbox(context);
         }
         let upper_left = upper_left!(area);
@@ -660,11 +665,15 @@ impl Component for ThreadListing {
                 self.dirty = true;
                 self.view = None;
             }
-            UIEventType::MailboxUpdate((ref idxa, ref idxf)) if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 => {
+            UIEventType::MailboxUpdate((ref idxa, ref idxf))
+                if *idxa == self.new_cursor_pos.0 && *idxf == self.new_cursor_pos.1 =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
-            UIEventType::StartupCheck(ref f) if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) => {
+            UIEventType::StartupCheck(ref f)
+                if context.mailbox_hashes[f] == (self.new_cursor_pos.0, self.new_cursor_pos.1) =>
+            {
                 self.refresh_mailbox(context);
                 self.set_dirty();
             }
diff --git a/ui/src/components/mail/view.rs b/ui/src/components/mail/view.rs
index 5e74ecfe..d2549330 100644
--- a/ui/src/components/mail/view.rs
+++ b/ui/src/components/mail/view.rs
@@ -88,10 +88,7 @@ impl MailView {
         let account = &mut context.accounts[coordinates.0];
         let (hash, is_seen) = {
             let mailbox = &mut account[coordinates.1].as_mut().unwrap();
-            let envelope: &mut Envelope = &mut mailbox
-                .collection
-                .entry(coordinates.2)
-                .or_default();
+            let envelope: &mut Envelope = &mut mailbox.collection.entry(coordinates.2).or_default();
             (envelope.hash(), envelope.is_seen())
         };
         if !is_seen {
@@ -104,10 +101,7 @@ impl MailView {
                 backend.operation(hash, folder_hash)
             };
             let mailbox = &mut account[coordinates.1].as_mut().unwrap();
-            let envelope: &mut Envelope = &mut mailbox
-                .collection
-                .entry(coordinates.2)
-                .or_default();
+            let envelope: &mut Envelope = &mut mailbox.collection.entry(coordinates.2).or_default();
             envelope.set_seen(op).unwrap();
         }
         MailView {
@@ -428,34 +422,37 @@ impl Component for MailView {
                 if let ViewMode::ContactSelector(_) = self.mode {
                     if let ViewMode::ContactSelector(s) =
                         std::mem::replace(&mut self.mode, ViewMode::Normal)
+                    {
+                        let account = &mut context.accounts[self.coordinates.0];
+                        let mut results = Vec::new();
                         {
-                            let account = &mut context.accounts[self.coordinates.0];
-                            let mut results = Vec::new();
-                            {
-                                let mailbox = &account[self.coordinates.1]
-                                    .as_ref()
-                                    .unwrap();
-                                let envelope: &Envelope = &mailbox.collection[&self.coordinates.2];
-                                for c in s.collect() {
-                                    let c = usize::from_ne_bytes({
-                                        [c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]]
-                                    });
-                                    for (idx, env) in envelope.from().iter().chain(envelope.to().iter()).enumerate() {
-                                        if idx != c {
-                                            continue;
-                                        }
-
-                                        let mut new_card: Card = Card::new();
-                                        new_card.set_email(env.get_email());
-                                        new_card.set_lastname(env.get_display_name());
-                                        results.push(new_card);
+                            let mailbox = &account[self.coordinates.1].as_ref().unwrap();
+                            let envelope: &Envelope = &mailbox.collection[&self.coordinates.2];
+                            for c in s.collect() {
+                                let c = usize::from_ne_bytes({
+                                    [c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]]
+                                });
+                                for (idx, env) in envelope
+                                    .from()
+                                    .iter()
+                                    .chain(envelope.to().iter())
+                                    .enumerate()
+                                {
+                                    if idx != c {
+                                        continue;
                                     }
+
+                                    let mut new_card: Card = Card::new();
+                                    new_card.set_email(env.get_email());
+                                    new_card.set_lastname(env.get_display_name());
+                                    results.push(new_card);
                                 }
                             }
-                            for c in results {
-                                account.address_book.add_card(c);
-                            }
                         }
+                        for c in results {
+                            account.address_book.add_card(c);
+                        }
+                    }
                     return true;
                 }
                 let accounts = &context.accounts;
@@ -465,11 +462,13 @@ impl Component for MailView {
                 let envelope: &Envelope = &mailbox.collection[&self.coordinates.2];
 
                 let mut entries = Vec::new();
-                for (idx, env) in envelope.from().iter().chain(envelope.to().iter()).enumerate() {
-                    entries.push((
-                            idx.to_ne_bytes().to_vec(),
-                            format!("{}", env),
-                            ));
+                for (idx, env) in envelope
+                    .from()
+                    .iter()
+                    .chain(envelope.to().iter())
+                    .enumerate()
+                {
+                    entries.push((idx.to_ne_bytes().to_vec(), format!("{}", env)));
                 }
                 self.mode = ViewMode::ContactSelector(Selector::new(entries, true));
                 self.dirty = true;
@@ -651,7 +650,9 @@ impl Component for MailView {
                 }
                 self.dirty = true;
             }
-            UIEventType::EnvelopeRename(_, old_hash, new_hash) if old_hash == self.coordinates.2 => {
+            UIEventType::EnvelopeRename(_, old_hash, new_hash)
+                if old_hash == self.coordinates.2 =>
+            {
                 self.coordinates.2 = new_hash;
                 self.set_dirty();
             }
diff --git a/ui/src/components/mail/view/thread.rs b/ui/src/components/mail/view/thread.rs
index dfad1fd2..2edb0ed3 100644
--- a/ui/src/components/mail/view/thread.rs
+++ b/ui/src/components/mail/view/thread.rs
@@ -79,9 +79,11 @@ impl ThreadView {
         if self.entries.is_empty() {
             return;
         }
-        let old_focused_entry = if self.entries.len() > self.cursor_pos { 
+        let old_focused_entry = if self.entries.len() > self.cursor_pos {
             Some(self.entries.remove(self.cursor_pos))
-        } else { None };
+        } else {
+            None
+        };
 
         let old_expanded_entry = if self.entries.len() > self.expanded_pos {
             Some(self.entries.remove(self.expanded_pos))
@@ -93,21 +95,24 @@ impl ThreadView {
         let expanded_pos = self.expanded_pos;
         self.initiate(Some(expanded_pos), context);
         if let Some(old_focused_entry) = old_focused_entry {
-            if let Some(new_entry_idx) = self.entries.iter().position(
-                |e| e.msg_idx == old_focused_entry.msg_idx ||
-                (e.index.1 == old_focused_entry.index.1 && e.index.2 == old_focused_entry.index.2)) {
+            if let Some(new_entry_idx) = self.entries.iter().position(|e| {
+                e.msg_idx == old_focused_entry.msg_idx
+                    || (e.index.1 == old_focused_entry.index.1
+                        && e.index.2 == old_focused_entry.index.2)
+            }) {
                 self.cursor_pos = new_entry_idx;
             }
         }
         if let Some(old_expanded_entry) = old_expanded_entry {
-            if let Some(new_entry_idx) = self.entries.iter().position(
-                |e| e.msg_idx == old_expanded_entry.msg_idx ||
-                (e.index.1 == old_expanded_entry.index.1 && e.index.2 == old_expanded_entry.index.2)) {
+            if let Some(new_entry_idx) = self.entries.iter().position(|e| {
+                e.msg_idx == old_expanded_entry.msg_idx
+                    || (e.index.1 == old_expanded_entry.index.1
+                        && e.index.2 == old_expanded_entry.index.2)
+            }) {
                 self.expanded_pos = new_entry_idx;
             }
         }
         self.set_dirty();
-
     }
     fn initiate(&mut self, expanded_idx: Option<usize>, context: &Context) {
         /* stack to push thread messages in order in order to pop and print them later */
@@ -183,12 +188,14 @@ impl ThreadView {
                     if content[index].ch() == ' ' {
                         let mut ctr = 1;
                         while content.get(e.index.0 * 4 + ctr, 2 * y - 1).is_some() {
-                            if content[(e.index.0 * 4 + ctr, 2 * y - 1)].ch() != ' ' { break; }
+                            if content[(e.index.0 * 4 + ctr, 2 * y - 1)].ch() != ' ' {
+                                break;
+                            }
                             set_and_join_box(
                                 &mut content,
                                 (e.index.0 * 4 + ctr, 2 * y - 1),
                                 HORZ_BOUNDARY,
-                                );
+                            );
                             ctr += 1;
                         }
                         set_and_join_box(&mut content, index, HORZ_BOUNDARY);
@@ -197,11 +204,19 @@ impl ThreadView {
                 write_string_to_grid(
                     &strings[y],
                     &mut content,
-                    if e.seen { Color::Default } else { Color::Byte(0) },
-                    if e.seen { Color::Default } else { Color::Byte(251) },
+                    if e.seen {
+                        Color::Default
+                    } else {
+                        Color::Byte(0)
+                    },
+                    if e.seen {
+                        Color::Default
+                    } else {
+                        Color::Byte(251)
+                    },
                     ((e.index.0 * 4 + 1, 2 * y), (width - 1, height - 1)),
                     true,
-                    );
+                );
                 if let Some(len) = highlight_reply_subjects[y] {
                     let index = e.index.0 * 4 + 1 + strings[y].len() - len;
                     let area = ((index, 2 * y), (width - 2, 2 * y));
@@ -225,12 +240,14 @@ impl ThreadView {
                     if content[index].ch() == ' ' {
                         let mut ctr = 1;
                         while content.get(e.index.0 * 4 + ctr, 2 * y - 1).is_some() {
-                            if content[(e.index.0 * 4 + ctr, 2 * y - 1)].ch() != ' ' { break; }
+                            if content[(e.index.0 * 4 + ctr, 2 * y - 1)].ch() != ' ' {
+                                break;
+                            }
                             set_and_join_box(
                                 &mut content,
                                 (e.index.0 * 4 + ctr, 2 * y - 1),
                                 HORZ_BOUNDARY,
-                                );
+                            );
                             ctr += 1;
                         }
                         set_and_join_box(&mut content, index, HORZ_BOUNDARY);
@@ -239,11 +256,19 @@ impl ThreadView {
                 write_string_to_grid(
                     &strings[y],
                     &mut content,
-                    if e.seen { Color::Default } else { Color::Byte(0) },
-                    if e.seen { Color::Default } else { Color::Byte(251) },
+                    if e.seen {
+                        Color::Default
+                    } else {
+                        Color::Byte(0)
+                    },
+                    if e.seen {
+                        Color::Default
+                    } else {
+                        Color::Byte(251)
+                    },
                     ((e.index.0 * 4 + 1, 2 * y), (width - 1, height - 1)),
                     true,
-                    );
+                );
                 if let Some(len) = highlight_reply_subjects[y] {
                     let index = e.index.0 * 4 + 1 + strings[y].len() - len;
                     let area = ((index, 2 * y), (width - 2, 2 * y));
@@ -267,7 +292,12 @@ impl ThreadView {
         self.content = content;
     }
 
-    fn make_entry(&mut self, i: (usize, usize, usize), msg_idx: EnvelopeHash, seen: bool) -> ThreadEntry {
+    fn make_entry(
+        &mut self,
+        i: (usize, usize, usize),
+        msg_idx: EnvelopeHash,
+        seen: bool,
+    ) -> ThreadEntry {
         let (ind, _, _) = i;
         ThreadEntry {
             index: i,
@@ -466,7 +496,6 @@ impl ThreadView {
         for x in get_x(upper_left)..=get_x(bottom_right) {
             set_and_join_box(grid, (x, y - 1), HORZ_BOUNDARY);
         }
-
     }
     fn draw_horz(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
         let upper_left = upper_left!(area);
@@ -577,7 +606,6 @@ impl ThreadView {
             self.initiated = true;
         }
 
-
         if self.show_mailview {
             self.draw_list(
                 grid,
diff --git a/ui/src/components/utilities.rs b/ui/src/components/utilities.rs
index bab024b6..53e6679c 100644
--- a/ui/src/components/utilities.rs
+++ b/ui/src/components/utilities.rs
@@ -200,7 +200,13 @@ impl Component for VSplit {
         } else {
             self.left.component.draw(
                 grid,
-                (upper_left, (if self.show_divider { mid - 1 } else { mid }, get_y(bottom_right))),
+                (
+                    upper_left,
+                    (
+                        if self.show_divider { mid - 1 } else { mid },
+                        get_y(bottom_right),
+                    ),
+                ),
                 context,
             );
             self.right
diff --git a/ui/src/conf/accounts.rs b/ui/src/conf/accounts.rs
index aefa1cf3..56209299 100644
--- a/ui/src/conf/accounts.rs
+++ b/ui/src/conf/accounts.rs
@@ -23,13 +23,13 @@
  * Account management from user configuration.
  */
 
-use melib::async_workers::{Async, AsyncStatus, AsyncBuilder};
 use super::AccountConf;
+use melib::async_workers::{Async, AsyncBuilder, AsyncStatus};
+use melib::error::Result;
 use melib::mailbox::backends::{
     Backends, Folder, MailBackend, NotifyFn, RefreshEvent, RefreshEventConsumer, RefreshEventKind,
 };
 use melib::mailbox::*;
-use melib::error::Result;
 use melib::AddressBook;
 
 use std::fs;
@@ -38,7 +38,7 @@ use std::mem;
 use std::ops::{Index, IndexMut};
 use std::result;
 use std::sync::Arc;
-use types::UIEventType::{self, Notification, EnvelopeUpdate, EnvelopeRename, EnvelopeRemove};
+use types::UIEventType::{self, EnvelopeRemove, EnvelopeRename, EnvelopeUpdate, Notification};
 
 pub type Worker = Option<Async<Result<Mailbox>>>;
 
diff --git a/ui/src/state.rs b/ui/src/state.rs
index 723693b1..0ae49dca 100644
--- a/ui/src/state.rs
+++ b/ui/src/state.rs
@@ -282,7 +282,9 @@ impl State {
                     .send(ThreadEvent::UIEvent(UIEventType::StartupCheck(hash)));
                 self.context
                     .sender
-                    .send(ThreadEvent::UIEvent(UIEventType::MailboxUpdate((idxa, idxm))));
+                    .send(ThreadEvent::UIEvent(UIEventType::MailboxUpdate((
+                        idxa, idxm,
+                    ))));
                 self.context.replies.push_back(UIEvent {
                     id: 0,
                     event_type: notification,
diff --git a/ui/src/types.rs b/ui/src/types.rs
index 9f5b19ba..03a66210 100644
--- a/ui/src/types.rs
+++ b/ui/src/types.rs
@@ -26,9 +26,9 @@ pub use self::helpers::*;
 use super::execute::Action;
 use super::terminal::*;
 
-use melib::RefreshEvent;
-use melib::EnvelopeHash;
 use melib::backends::FolderHash;
+use melib::EnvelopeHash;
+use melib::RefreshEvent;
 use std;
 use std::fmt;
 use std::thread;