warning: binary comparison to literal `Option::None`
  --> src/service/tools.rs:13:9
   |
13 |         self.file_name != None
   |         ^^^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_some()` instead: `self.file_name.is_some()`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
   = note: `#[warn(clippy::partialeq_to_none)]` on by default

warning: accessing first element with `usable_db
                                                             .clone()
                                                             .unwrap().get(0)`
   --> src/service/routes.rs:605:58
    |
605 |   ...                   let nc = usable_db
    |  ________________________________^
606 | | ...                       .clone()
607 | | ...                       .unwrap()
608 | | ...                       .get(0)
    | |_________________________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first
help: try
    |
605 ~                                                 let nc = usable_db
606 +                                                     .clone()
607 +                                                     .unwrap().first()
    |

warning: accessing first element with `commands.get(0)`
   --> src/service/routes.rs:494:50
    |
494 |                         let command_name: &str = commands.get(0).unwrap();
    |                                                  ^^^^^^^^^^^^^^^ help: try: `commands.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: unnecessary use of `to_string`
   --> src/service/routes.rs:409:17
    |
409 |                 &String::from_utf8_lossy(&v.1[..]).to_string(),
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `String::from_utf8_lossy(&v.1[..]).as_ref()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_to_owned
    = note: `#[warn(clippy::unnecessary_to_owned)]` on by default

warning: this let-binding has unit value
   --> src/service/routes.rs:215:5
    |
215 | /     let _ = match client.select(&group).await {
216 | |         Ok(_) => {}
217 | |         Err(_) => {
218 | |             return Api::error(StatusCode::INTERNAL_SERVER_ERROR, "Client execute failed.");
219 | |         }
220 | |     };
    | |______^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
help: omit the `let` binding
    |
215 ~     match client.select(&group).await {
216 +         Ok(_) => {}
217 +         Err(_) => {
218 +             return Api::error(StatusCode::INTERNAL_SERVER_ERROR, "Client execute failed.");
219 +         }
220 +     };
    |

warning: unneeded late initialization
   --> src/database.rs:753:9
    |
753 |         let data_file: PathBuf;
    |         ^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: move the declaration `data_file` here and remove the assignments from the branches
    |
753 ~         
754 ~         let data_file: PathBuf = if index_info.file_id == self.get_file_id() {
755 ~             self.root.join("active.db")
756 |         } else {
757 ~             self.root.join(format!("archive-{}.db", index_info.file_id))
758 ~         };
    |

warning: this let-binding has unit value
   --> src/database.rs:708:9
    |
708 |         let _ = self.check_file().unwrap();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: omit the `let` binding: `self.check_file().unwrap();`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
    = note: `#[warn(clippy::let_unit_value)]` on by default

warning: unneeded late initialization
   --> src/database.rs:501:21
    |
501 |                     let file_id: u32;
    |                     ^^^^^^^^^^^^^^^^^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: move the declaration `file_id` here and remove the assignments from the branches
    |
501 ~                     
502 |
503 ~                     let file_id: u32 = if file_name == "active.db" {
504 ~                         self.get_file_id()
505 |                     } else {
506 ~                         info.as_ref().unwrap().1.parse::<u32>().unwrap()
507 ~                     };
    |

warning: casting to the same type is unnecessary (`isize` -> `isize`)
   --> src/database.rs:191:57
    |
191 |             self.eli_queue.insert(db.to_string(), old + num as isize);
    |                                                         ^^^^^^^^^^^^ help: try: `num`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: direct implementation of `ToString`
  --> src/database.rs:75:1
   |
75 | / impl ToString for DataBaseState {
76 | |     fn to_string(&self) -> String {
77 | |         match &self {
78 | |             DataBaseState::NORMAL => "Normal".to_string(),
...  |
83 | |     }
84 | | }
   | |_^
   |
   = help: prefer implementing `Display` instead
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#to_string_trait_impl

warning: the borrowed expression implements the required traits
   --> src/configure.rs:117:15
    |
117 |     fs::write(&service_path.join("service.toml"), rest)?;
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `service_path.join("service.toml")`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default

warning: accessing first element with `slice.get(0)`
    --> src/command.rs:1304:36
     |
1304 |             let expression: &str = slice.get(0).unwrap();
     |                                    ^^^^^^^^^^^^ help: try: `slice.first()`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `slice.get(0)`
    --> src/command.rs:1081:35
     |
1081 |             let operation: &str = slice.get(0).unwrap();
     |                                   ^^^^^^^^^^^^ help: try: `slice.first()`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `slice.get(0)`
    --> src/command.rs:1031:32
     |
1031 |             let target: &str = slice.get(0).unwrap();
     |                                ^^^^^^^^^^^^ help: try: `slice.first()`
     |
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `slice.get(0)`
   --> src/command.rs:827:35
    |
827 |             let operation: &str = slice.get(0).unwrap();
    |                                   ^^^^^^^^^^^^ help: try: `slice.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `slice.get(0)`
   --> src/command.rs:801:35
    |
801 |             let operation: &str = slice.get(0).unwrap();
    |                                   ^^^^^^^^^^^^ help: try: `slice.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: this if-then-else expression assigns a bool literal
   --> src/command.rs:746:25
    |
746 | /                         if temp.to_uppercase() == "DESC" {
747 | |                             asc = false;
748 | |                         } else {
749 | |                             asc = true;
750 | |                         }
    | |_________________________^ help: you can reduce it to: `asc = temp.to_uppercase() != "DESC";`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool_assign
    = note: `#[warn(clippy::needless_bool_assign)]` on by default

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:745:42
    |
745 |                         let temp: &str = sub_arg.get(0).unwrap_or(&"asc");
    |                                          ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:705:32
    |
705 |                     let data = sub_arg.get(0).unwrap();
    |                                ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:691:31
    |
691 |                     let key = sub_arg.get(0).unwrap();
    |                               ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:662:38
    |
662 |                     let data: &str = sub_arg.get(0).unwrap();
    |                                      ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:616:38
    |
616 |                     let data: &str = sub_arg.get(0).unwrap();
    |                                      ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: accessing first element with `sub_arg.get(0)`
   --> src/command.rs:603:44
    |
603 |                         let number: &str = sub_arg.get(0).unwrap();
    |                                            ^^^^^^^^^^^^^^ help: try: `sub_arg.first()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> src/command.rs:552:36
    |
552 |                 if current_time >= (node_timestamp.0 as u64 + node_timestamp.1) as u64
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(node_timestamp.0 as u64 + node_timestamp.1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast