[INFO] cloning repository https://github.com/Akshat-Somvanshi/rustdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Akshat-Somvanshi/rustdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkshat-Somvanshi%2Frustdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkshat-Somvanshi%2Frustdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35a11d911da6d35f2f7a0aefc44cf92be141312b
[INFO] linting Akshat-Somvanshi/rustdb against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkshat-Somvanshi%2Frustdb" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Akshat-Somvanshi/rustdb
[INFO] finished tweaking git repo https://github.com/Akshat-Somvanshi/rustdb
[INFO] tweaked toml for git repo https://github.com/Akshat-Somvanshi/rustdb written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Akshat-Somvanshi/rustdb on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Akshat-Somvanshi/rustdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d391e7846dc2defca91611dc4d8f655c1a1ca3c475efa4943bdd4612baeaa8ce
[INFO] running `Command { std: "docker" "start" "-a" "d391e7846dc2defca91611dc4d8f655c1a1ca3c475efa4943bdd4612baeaa8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d391e7846dc2defca91611dc4d8f655c1a1ca3c475efa4943bdd4612baeaa8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d391e7846dc2defca91611dc4d8f655c1a1ca3c475efa4943bdd4612baeaa8ce", kill_on_drop: false }`
[INFO] [stdout] d391e7846dc2defca91611dc4d8f655c1a1ca3c475efa4943bdd4612baeaa8ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3a7ee9a687947ec9cacc99f6959d9a7e42b4140862b7a0aaf8fa61443e60983
[INFO] running `Command { std: "docker" "start" "-a" "a3a7ee9a687947ec9cacc99f6959d9a7e42b4140862b7a0aaf8fa61443e60983", kill_on_drop: false }`
[INFO] [stderr]     Checking rustdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::clone`
[INFO] [stdout]    --> src/B_tree.rs:633:9
[INFO] [stdout]     |
[INFO] [stdout] 633 |     use std::clone;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/B_tree.rs:221:26
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut end: usize = 0;
[INFO] [stdout]     |                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `BNode`
[INFO] [stdout]   --> src/B_tree.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     pub fn new() -> BNode {
[INFO] [stdout] 22 | |         let bnode = BNode {
[INFO] [stdout] 23 | |             data: vec![0; BTREE_PAGE_SIZE],
[INFO] [stdout] 24 | |         };
[INFO] [stdout] 25 | |         return bnode;
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 20 + impl Default for BNode {
[INFO] [stdout] 21 +     fn default() -> Self {
[INFO] [stdout] 22 +         Self::new()
[INFO] [stdout] 23 +     }
[INFO] [stdout] 24 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         return bnode;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -         return bnode;
[INFO] [stdout] 25 +         bnode
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         return u16::from_ne_bytes(self.data[..2].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 28 -         return u16::from_ne_bytes(self.data[..2].try_into().unwrap());
[INFO] [stdout] 28 +         u16::from_ne_bytes(self.data[..2].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         return u16::from_ne_bytes(self.data[2..4].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 31 -         return u16::from_ne_bytes(self.data[2..4].try_into().unwrap());
[INFO] [stdout] 31 +         u16::from_ne_bytes(self.data[2..4].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         return u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -         return u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap());
[INFO] [stdout] 40 +         u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return HEADER + 8 * self.nkeys() + 2 * (index);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return HEADER + 8 * self.nkeys() + 2 * (index);
[INFO] [stdout] 51 +             HEADER + 8 * self.nkeys() + 2 * (index)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             return HEADER + 8 * self.nkeys();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 53 -             return HEADER + 8 * self.nkeys();
[INFO] [stdout] 53 +             HEADER + 8 * self.nkeys()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | /         return u16::from_ne_bytes(
[INFO] [stdout] 60 | |             self.data[offset_position..offset_position + 2]
[INFO] [stdout] 61 | |                 .try_into()
[INFO] [stdout] 62 | |                 .unwrap(),
[INFO] [stdout] 63 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 ~         u16::from_ne_bytes(
[INFO] [stdout] 60 +             self.data[offset_position..offset_position + 2]
[INFO] [stdout] 61 +                 .try_into()
[INFO] [stdout] 62 +                 .unwrap(),
[INFO] [stdout] 63 ~         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         return HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 78 -         return HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index);
[INFO] [stdout] 78 +         HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         return self.data[key_pos + 4..key_pos + 4 + klen].to_vec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 86 -         return self.data[key_pos + 4..key_pos + 4 + klen].to_vec();
[INFO] [stdout] 86 +         self.data[key_pos + 4..key_pos + 4 + klen].to_vec()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         return self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 94 -         return self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec();
[INFO] [stdout] 94 +         self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         return last_index_containing_value as u16;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 101 -         return last_index_containing_value as u16;
[INFO] [stdout] 101 +         last_index_containing_value as u16
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         return found;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 123 -         return found;
[INFO] [stdout] 123 +         found
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             i = i + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/B_tree.rs:221:26
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut end: usize = 0;
[INFO] [stdout]     |                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     return pointer as u64;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 264 -     return pointer as u64;
[INFO] [stdout] 264 +     pointer as u64
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 272 |         return BNode { data: result };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 272 -         return BNode { data: result };
[INFO] [stdout] 272 +         BNode { data: result }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `BTree`
[INFO] [stdout]    --> src/B_tree.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 276 | /     pub fn new() -> BTree {
[INFO] [stdout] 277 | |         return BTree { root: 0 };
[INFO] [stdout] 278 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]     |
[INFO] [stdout] 275 + impl Default for BTree {
[INFO] [stdout] 276 +     fn default() -> Self {
[INFO] [stdout] 277 +         Self::new()
[INFO] [stdout] 278 +     }
[INFO] [stdout] 279 + }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         return BTree { root: 0 };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 277 -         return BTree { root: 0 };
[INFO] [stdout] 277 +         BTree { root: 0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:294:13
[INFO] [stdout]     |
[INFO] [stdout] 294 |             i = i + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:329:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         return new;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 329 -         return new;
[INFO] [stdout] 329 +         new
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:354:13
[INFO] [stdout]     |
[INFO] [stdout] 354 |             return;
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 353 -             self.root = new(root);
[INFO] [stdout] 354 -             return;
[INFO] [stdout] 353 +             self.root = new(root);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout] 346 |         assert!(key.len() != 0 && key.len() <= BTREE_MAX_KEY_SIZE);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!key.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]     = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:369:21
[INFO] [stdout]     |
[INFO] [stdout] 369 |                     i = i + 1;
[INFO] [stdout]     |                     ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/B_tree.rs:415:20
[INFO] [stdout]     |
[INFO] [stdout] 415 |                 if !(key.cmp(&node.get_key(index)) == Ordering::Equal) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(key.cmp(&node.get_key(index)) != Ordering::Equal)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:421:17
[INFO] [stdout]     |
[INFO] [stdout] 421 |                 return new_node;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 421 -                 return new_node;
[INFO] [stdout] 421 +                 new_node
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:425:17
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 return self.node_delete(node, index, key);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 425 -                 return self.node_delete(node, index, key);
[INFO] [stdout] 425 +                 self.node_delete(node, index, key)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:428:17
[INFO] [stdout]     |
[INFO] [stdout] 428 |                 return BNode::new();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 428 -                 return BNode::new();
[INFO] [stdout] 428 +                 BNode::new()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:449:9
[INFO] [stdout]     |
[INFO] [stdout] 449 |         return true;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 449 -         return true;
[INFO] [stdout] 449 +         true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:433:17
[INFO] [stdout]     |
[INFO] [stdout] 433 |         assert!(key.len() != 0 && key.len() <= BTREE_MAX_KEY_SIZE);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!key.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:439:12
[INFO] [stdout]     |
[INFO] [stdout] 439 |         if updated_node.data.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `updated_node.data.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         return new_node;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 485 -         return new_node;
[INFO] [stdout] 485 +         new_node
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:455:12
[INFO] [stdout]     |
[INFO] [stdout] 455 |         if updated_node.data.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `updated_node.data.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]    --> src/B_tree.rs:749:14
[INFO] [stdout]     |
[INFO] [stdout] 749 |         let (found, index, node) = tree.search(&new_key);
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:483:58
[INFO] [stdout]     |
[INFO] [stdout] 483 |             self.node_replace_kidN(&mut new_node, index, &node, vec![updated_node]);
[INFO] [stdout]     |                                                          ^^^^^ help: change this to: `node`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/B_tree.rs:804:13
[INFO] [stdout]     |
[INFO] [stdout] 804 |         let index = root_node.lookup_key(&nkey);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:542:9
[INFO] [stdout]     |
[INFO] [stdout] 542 |         return (0, BNode::new());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 542 -         return (0, BNode::new());
[INFO] [stdout] 542 +         (0, BNode::new())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]    --> src/B_tree.rs:809:14
[INFO] [stdout]     |
[INFO] [stdout] 809 |         let (found, index, node) = tree.search(&vec![3, 53, 2]);
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:555:17
[INFO] [stdout]     |
[INFO] [stdout] 555 |                 return (found, index, root_node);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 555 -                 return (found, index, root_node);
[INFO] [stdout] 555 +                 (found, index, root_node)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `BNode`
[INFO] [stdout]   --> src/B_tree.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     pub fn new() -> BNode {
[INFO] [stdout] 22 | |         let bnode = BNode {
[INFO] [stdout] 23 | |             data: vec![0; BTREE_PAGE_SIZE],
[INFO] [stdout] 24 | |         };
[INFO] [stdout] 25 | |         return bnode;
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 20 + impl Default for BNode {
[INFO] [stdout] 21 +     fn default() -> Self {
[INFO] [stdout] 22 +         Self::new()
[INFO] [stdout] 23 +     }
[INFO] [stdout] 24 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         return bnode;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -         return bnode;
[INFO] [stdout] 25 +         bnode
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         return u16::from_ne_bytes(self.data[..2].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 28 -         return u16::from_ne_bytes(self.data[..2].try_into().unwrap());
[INFO] [stdout] 28 +         u16::from_ne_bytes(self.data[..2].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:567:17
[INFO] [stdout]     |
[INFO] [stdout] 567 |                 return (found, index, node);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 567 -                 return (found, index, node);
[INFO] [stdout] 567 +                 (found, index, node)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:570:17
[INFO] [stdout]     |
[INFO] [stdout] 570 |                 return (false, 0, BNode::new());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 570 -                 return (false, 0, BNode::new());
[INFO] [stdout] 570 +                 (false, 0, BNode::new())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:547:42
[INFO] [stdout]     |
[INFO] [stdout] 547 |         let index = root_node.lookup_key(&key);
[INFO] [stdout]     |                                          ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         return u16::from_ne_bytes(self.data[2..4].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 31 -         return u16::from_ne_bytes(self.data[2..4].try_into().unwrap());
[INFO] [stdout] 31 +         u16::from_ne_bytes(self.data[2..4].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         return u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -         return u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap());
[INFO] [stdout] 40 +         u64::from_ne_bytes(self.data[position..position + 8].try_into().unwrap())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:552:49
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 if root_node.get_key(index).cmp(&key) == Ordering::Equal {
[INFO] [stdout]     |                                                 ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:560:49
[INFO] [stdout]     |
[INFO] [stdout] 560 |                     let index = node.lookup_key(&key);
[INFO] [stdout]     |                                                 ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:563:45
[INFO] [stdout]     |
[INFO] [stdout] 563 |                 let index = node.lookup_key(&key);
[INFO] [stdout]     |                                             ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:564:44
[INFO] [stdout]     |
[INFO] [stdout] 564 |                 if node.get_key(index).cmp(&key) == Ordering::Equal {
[INFO] [stdout]     |                                            ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return HEADER + 8 * self.nkeys() + 2 * (index);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return HEADER + 8 * self.nkeys() + 2 * (index);
[INFO] [stdout] 51 +             HEADER + 8 * self.nkeys() + 2 * (index)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:605:9
[INFO] [stdout]     |
[INFO] [stdout] 605 |         return vec![modified_node];
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 605 -         return vec![modified_node];
[INFO] [stdout] 605 +         vec![modified_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:620:13
[INFO] [stdout]     |
[INFO] [stdout] 620 |             return vec![modified_node, right_node];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 620 -             return vec![modified_node, right_node];
[INFO] [stdout] 620 +             vec![modified_node, right_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:625:13
[INFO] [stdout]     |
[INFO] [stdout] 625 |             return vec![extreme_left_node, middle_node, right_node];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 625 -             return vec![extreme_left_node, middle_node, right_node];
[INFO] [stdout] 625 +             vec![extreme_left_node, middle_node, right_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             return HEADER + 8 * self.nkeys();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 53 -             return HEADER + 8 * self.nkeys();
[INFO] [stdout] 53 +             HEADER + 8 * self.nkeys()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `B_tree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod B_tree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `b_tree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | /         return u16::from_ne_bytes(
[INFO] [stdout] 60 | |             self.data[offset_position..offset_position + 2]
[INFO] [stdout] 61 | |                 .try_into()
[INFO] [stdout] 62 | |                 .unwrap(),
[INFO] [stdout] 63 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 ~         u16::from_ne_bytes(
[INFO] [stdout] 60 +             self.data[offset_position..offset_position + 2]
[INFO] [stdout] 61 +                 .try_into()
[INFO] [stdout] 62 +                 .unwrap(),
[INFO] [stdout] 63 ~         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         return HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 78 -         return HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index);
[INFO] [stdout] 78 +         HEADER + self.nkeys() * 2 + self.nkeys() * 8 + self.get_offset(index)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         return self.data[key_pos + 4..key_pos + 4 + klen].to_vec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 86 -         return self.data[key_pos + 4..key_pos + 4 + klen].to_vec();
[INFO] [stdout] 86 +         self.data[key_pos + 4..key_pos + 4 + klen].to_vec()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/B_tree.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         return self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 94 -         return self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec();
[INFO] [stdout] 94 +         self.data[key_pos + 4 + klen..key_pos + 4 + klen + vlen].to_vec()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         return last_index_containing_value as u16;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 101 -         return last_index_containing_value as u16;
[INFO] [stdout] 101 +         last_index_containing_value as u16
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         return found;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 123 -         return found;
[INFO] [stdout] 123 +         found
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             i = i + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::boxed::Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/B_tree.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         Box::into_raw(data);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let _ = Box::into_raw(data);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `node_replace_kidN` should have a snake case name
[INFO] [stdout]    --> src/B_tree.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn node_replace_kidN(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `node_replace_kid_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     return pointer as u64;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 264 -     return pointer as u64;
[INFO] [stdout] 264 +     pointer as u64
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 272 |         return BNode { data: result };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 272 -         return BNode { data: result };
[INFO] [stdout] 272 +         BNode { data: result }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `BTree`
[INFO] [stdout]    --> src/B_tree.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 276 | /     pub fn new() -> BTree {
[INFO] [stdout] 277 | |         return BTree { root: 0 };
[INFO] [stdout] 278 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]     |
[INFO] [stdout] 275 + impl Default for BTree {
[INFO] [stdout] 276 +     fn default() -> Self {
[INFO] [stdout] 277 +         Self::new()
[INFO] [stdout] 278 +     }
[INFO] [stdout] 279 + }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:277:9
[INFO] [stdout]     |
[INFO] [stdout] 277 |         return BTree { root: 0 };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 277 -         return BTree { root: 0 };
[INFO] [stdout] 277 +         BTree { root: 0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:294:13
[INFO] [stdout]     |
[INFO] [stdout] 294 |             i = i + 1;
[INFO] [stdout]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:329:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         return new;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 329 -         return new;
[INFO] [stdout] 329 +         new
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:354:13
[INFO] [stdout]     |
[INFO] [stdout] 354 |             return;
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 353 -             self.root = new(root);
[INFO] [stdout] 354 -             return;
[INFO] [stdout] 353 +             self.root = new(root);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout] 346 |         assert!(key.len() != 0 && key.len() <= BTREE_MAX_KEY_SIZE);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!key.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]     = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/B_tree.rs:369:21
[INFO] [stdout]     |
[INFO] [stdout] 369 |                     i = i + 1;
[INFO] [stdout]     |                     ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/B_tree.rs:415:20
[INFO] [stdout]     |
[INFO] [stdout] 415 |                 if !(key.cmp(&node.get_key(index)) == Ordering::Equal) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(key.cmp(&node.get_key(index)) != Ordering::Equal)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:421:17
[INFO] [stdout]     |
[INFO] [stdout] 421 |                 return new_node;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 421 -                 return new_node;
[INFO] [stdout] 421 +                 new_node
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:425:17
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 return self.node_delete(node, index, key);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 425 -                 return self.node_delete(node, index, key);
[INFO] [stdout] 425 +                 self.node_delete(node, index, key)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:428:17
[INFO] [stdout]     |
[INFO] [stdout] 428 |                 return BNode::new();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 428 -                 return BNode::new();
[INFO] [stdout] 428 +                 BNode::new()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:449:9
[INFO] [stdout]     |
[INFO] [stdout] 449 |         return true;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 449 -         return true;
[INFO] [stdout] 449 +         true
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:433:17
[INFO] [stdout]     |
[INFO] [stdout] 433 |         assert!(key.len() != 0 && key.len() <= BTREE_MAX_KEY_SIZE);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!key.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:439:12
[INFO] [stdout]     |
[INFO] [stdout] 439 |         if updated_node.data.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `updated_node.data.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         return new_node;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 485 -         return new_node;
[INFO] [stdout] 485 +         new_node
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/B_tree.rs:455:12
[INFO] [stdout]     |
[INFO] [stdout] 455 |         if updated_node.data.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `updated_node.data.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:483:58
[INFO] [stdout]     |
[INFO] [stdout] 483 |             self.node_replace_kidN(&mut new_node, index, &node, vec![updated_node]);
[INFO] [stdout]     |                                                          ^^^^^ help: change this to: `node`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:542:9
[INFO] [stdout]     |
[INFO] [stdout] 542 |         return (0, BNode::new());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 542 -         return (0, BNode::new());
[INFO] [stdout] 542 +         (0, BNode::new())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:555:17
[INFO] [stdout]     |
[INFO] [stdout] 555 |                 return (found, index, root_node);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 555 -                 return (found, index, root_node);
[INFO] [stdout] 555 +                 (found, index, root_node)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:567:17
[INFO] [stdout]     |
[INFO] [stdout] 567 |                 return (found, index, node);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 567 -                 return (found, index, node);
[INFO] [stdout] 567 +                 (found, index, node)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:570:17
[INFO] [stdout]     |
[INFO] [stdout] 570 |                 return (false, 0, BNode::new());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 570 -                 return (false, 0, BNode::new());
[INFO] [stdout] 570 +                 (false, 0, BNode::new())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:547:42
[INFO] [stdout]     |
[INFO] [stdout] 547 |         let index = root_node.lookup_key(&key);
[INFO] [stdout]     |                                          ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:552:49
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 if root_node.get_key(index).cmp(&key) == Ordering::Equal {
[INFO] [stdout]     |                                                 ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:560:49
[INFO] [stdout]     |
[INFO] [stdout] 560 |                     let index = node.lookup_key(&key);
[INFO] [stdout]     |                                                 ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:563:45
[INFO] [stdout]     |
[INFO] [stdout] 563 |                 let index = node.lookup_key(&key);
[INFO] [stdout]     |                                             ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/B_tree.rs:564:44
[INFO] [stdout]     |
[INFO] [stdout] 564 |                 if node.get_key(index).cmp(&key) == Ordering::Equal {
[INFO] [stdout]     |                                            ^^^^ help: change this to: `key`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:605:9
[INFO] [stdout]     |
[INFO] [stdout] 605 |         return vec![modified_node];
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 605 -         return vec![modified_node];
[INFO] [stdout] 605 +         vec![modified_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:620:13
[INFO] [stdout]     |
[INFO] [stdout] 620 |             return vec![modified_node, right_node];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 620 -             return vec![modified_node, right_node];
[INFO] [stdout] 620 +             vec![modified_node, right_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/B_tree.rs:625:13
[INFO] [stdout]     |
[INFO] [stdout] 625 |             return vec![extreme_left_node, middle_node, right_node];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 625 -             return vec![extreme_left_node, middle_node, right_node];
[INFO] [stdout] 625 +             vec![extreme_left_node, middle_node, right_node]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BNODE_LEAF`, `BNode`, `BTree`, `get`, `new`, and `node_append_range`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rustdb::B_tree::{get, new, node_append_range, BNode, BTree, BNODE_LEAF};
[INFO] [stdout]   |                      ^^^  ^^^  ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `u64` which implements the `Copy` trait
[INFO] [stdout]    --> src/B_tree.rs:679:28
[INFO] [stdout]     |
[INFO] [stdout] 679 |         let temp_pointer = pointer.clone();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `pointer`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]     = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `B_tree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod B_tree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `b_tree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BNODE_LEAF`, `BNode`, `BTree`, `get`, `new`, and `node_append_range`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rustdb::B_tree::{get, new, node_append_range, BNode, BTree, BNODE_LEAF};
[INFO] [stdout]   |                      ^^^  ^^^  ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::boxed::Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/B_tree.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         Box::into_raw(data);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let _ = Box::into_raw(data);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `node_replace_kidN` should have a snake case name
[INFO] [stdout]    --> src/B_tree.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn node_replace_kidN(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `node_replace_kid_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "a3a7ee9a687947ec9cacc99f6959d9a7e42b4140862b7a0aaf8fa61443e60983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a7ee9a687947ec9cacc99f6959d9a7e42b4140862b7a0aaf8fa61443e60983", kill_on_drop: false }`
[INFO] [stdout] a3a7ee9a687947ec9cacc99f6959d9a7e42b4140862b7a0aaf8fa61443e60983