[INFO] cloning repository https://github.com/drllama07/B-Tree-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drllama07/B-Tree-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrllama07%2FB-Tree-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrllama07%2FB-Tree-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 522a8a54447144ff01623b2e6c23ceeacf99a4d2
[INFO] checking drllama07/B-Tree-in-rust against try#78c81ee3917a99dcff6e2e6822800f0492c415c3 for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrllama07%2FB-Tree-in-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/drllama07/B-Tree-in-rust
[INFO] finished tweaking git repo https://github.com/drllama07/B-Tree-in-rust
[INFO] tweaked toml for git repo https://github.com/drllama07/B-Tree-in-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/drllama07/B-Tree-in-rust on toolchain 78c81ee3917a99dcff6e2e6822800f0492c415c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/drllama07/B-Tree-in-rust 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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b68737da597d363c2dd5a35df1cb7d2404e8db336d71dce66ca3d317bdd08a92
[INFO] running `Command { std: "docker" "start" "-a" "b68737da597d363c2dd5a35df1cb7d2404e8db336d71dce66ca3d317bdd08a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b68737da597d363c2dd5a35df1cb7d2404e8db336d71dce66ca3d317bdd08a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b68737da597d363c2dd5a35df1cb7d2404e8db336d71dce66ca3d317bdd08a92", kill_on_drop: false }`
[INFO] [stdout] b68737da597d363c2dd5a35df1cb7d2404e8db336d71dce66ca3d317bdd08a92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 146c089d9e7f08704501d8bd18c7df78d68b6018f7421a4da1d0f3e3833d24a6
[INFO] running `Command { std: "docker" "start" "-a" "146c089d9e7f08704501d8bd18c7df78d68b6018f7421a4da1d0f3e3833d24a6", kill_on_drop: false }`
[INFO] [stderr]     Checking b_plus_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]  --> src/btrees.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::min;
[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 import: `std::cmp::min`
[INFO] [stdout]  --> src/btrees.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::min;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/btrees.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             _ => panic!("---")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/btrees.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             NodeType::Internal(keys) => {
[INFO] [stdout]    |             ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 42 |             NodeType::Leaf(_) => panic!("There are no children of leaf nodes"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 43 |             _ => panic!("---")
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/btrees.rs:133:11
[INFO] [stdout]     |
[INFO] [stdout] 133 |           _ => panic!("Undefined structure")
[INFO] [stdout]     |           ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/btrees.rs:133:11
[INFO] [stdout]     |
[INFO] [stdout] 107 |           NodeType::Leaf(keyvalue) => {
[INFO] [stdout]     |           ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 110 |           NodeType::Internal(keys) => {
[INFO] [stdout]     |           ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 133 |           _ => panic!("Undefined structure")
[INFO] [stdout]     |           ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:119:23
[INFO] [stdout]     |
[INFO] [stdout] 119 |                   let mut parent:u16;
[INFO] [stdout]     |                       ----^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyvalue`
[INFO] [stdout]    --> src/btrees.rs:107:26
[INFO] [stdout]     |
[INFO] [stdout] 107 |           NodeType::Leaf(keyvalue) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyvalue`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_id`
[INFO] [stdout]    --> src/btrees.rs:140:23
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let (node_id, parent_id) = self.search(key);
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_id`
[INFO] [stdout]    --> src/btrees.rs:145:23
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let (node_id, parent_id) = self.search(key);
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |        let mut node = self.nodes.get_mut(&current).unwrap();
[INFO] [stdout]     |            ----^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:350:13
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let mut parent_node = self.nodes.get_mut(&parent).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/btrees.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |                 for i in 0..middle_index {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/btrees.rs:340:21
[INFO] [stdout]     |
[INFO] [stdout] 340 |                 for i in 0..middle_index {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 |         let mut node = self.nodes.get_mut(&current).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:549:22
[INFO] [stdout]     |
[INFO] [stdout] 549 |                  let mut moved_value = kvs.pop().unwrap();
[INFO] [stdout]     |                      ----^^^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_idx`
[INFO] [stdout]    --> src/btrees.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                  let last_idx = &kvs.len() -1;
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]    --> src/btrees.rs:716:26
[INFO] [stdout]     |
[INFO] [stdout] 716 |           NodeType::Leaf(kvs) => {
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `child_id` is never read
[INFO] [stdout]    --> src/btrees.rs:701:28
[INFO] [stdout]     |
[INFO] [stdout] 701 |         let mut child_id = 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: variable `KeyValue` should have a snake case name
[INFO] [stdout]    --> src/btrees.rs:161:28
[INFO] [stdout]     |
[INFO] [stdout] 161 |             NodeType::Leaf(KeyValue) => {
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `key_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `KeyValue` should have a snake case name
[INFO] [stdout]    --> src/btrees.rs:180:28
[INFO] [stdout]     |
[INFO] [stdout] 180 |             NodeType::Leaf(KeyValue) => {
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `key_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/btrees.rs:726:14
[INFO] [stdout]     |
[INFO] [stdout] 726 |              mem::replace(pkvs, cells);
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[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] 726 |              let _ = mem::replace(pkvs, cells);
[INFO] [stdout]     |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/btrees.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             _ => panic!("---")
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/btrees.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             NodeType::Internal(keys) => {
[INFO] [stdout]    |             ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 42 |             NodeType::Leaf(_) => panic!("There are no children of leaf nodes"),
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 43 |             _ => panic!("---")
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/btrees.rs:133:11
[INFO] [stdout]     |
[INFO] [stdout] 133 |           _ => panic!("Undefined structure")
[INFO] [stdout]     |           ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/btrees.rs:133:11
[INFO] [stdout]     |
[INFO] [stdout] 107 |           NodeType::Leaf(keyvalue) => {
[INFO] [stdout]     |           ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 110 |           NodeType::Internal(keys) => {
[INFO] [stdout]     |           ------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 133 |           _ => panic!("Undefined structure")
[INFO] [stdout]     |           ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:119:23
[INFO] [stdout]     |
[INFO] [stdout] 119 |                   let mut parent:u16;
[INFO] [stdout]     |                       ----^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyvalue`
[INFO] [stdout]    --> src/btrees.rs:107:26
[INFO] [stdout]     |
[INFO] [stdout] 107 |           NodeType::Leaf(keyvalue) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyvalue`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_id`
[INFO] [stdout]    --> src/btrees.rs:140:23
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let (node_id, parent_id) = self.search(key);
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_id`
[INFO] [stdout]    --> src/btrees.rs:145:23
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let (node_id, parent_id) = self.search(key);
[INFO] [stdout]     |                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |        let mut node = self.nodes.get_mut(&current).unwrap();
[INFO] [stdout]     |            ----^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:350:13
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let mut parent_node = self.nodes.get_mut(&parent).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/btrees.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |                 for i in 0..middle_index {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/btrees.rs:340:21
[INFO] [stdout]     |
[INFO] [stdout] 340 |                 for i in 0..middle_index {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:430:13
[INFO] [stdout]     |
[INFO] [stdout] 430 |         let mut node = self.nodes.get_mut(&current).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btrees.rs:549:22
[INFO] [stdout]     |
[INFO] [stdout] 549 |                  let mut moved_value = kvs.pop().unwrap();
[INFO] [stdout]     |                      ----^^^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_idx`
[INFO] [stdout]    --> src/btrees.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                  let last_idx = &kvs.len() -1;
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]    --> src/btrees.rs:716:26
[INFO] [stdout]     |
[INFO] [stdout] 716 |           NodeType::Leaf(kvs) => {
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `child_id` is never read
[INFO] [stdout]    --> src/btrees.rs:701:28
[INFO] [stdout]     |
[INFO] [stdout] 701 |         let mut child_id = 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: variable `KeyValue` should have a snake case name
[INFO] [stdout]    --> src/btrees.rs:161:28
[INFO] [stdout]     |
[INFO] [stdout] 161 |             NodeType::Leaf(KeyValue) => {
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `key_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `KeyValue` should have a snake case name
[INFO] [stdout]    --> src/btrees.rs:180:28
[INFO] [stdout]     |
[INFO] [stdout] 180 |             NodeType::Leaf(KeyValue) => {
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `key_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/btrees.rs:726:14
[INFO] [stdout]     |
[INFO] [stdout] 726 |              mem::replace(pkvs, cells);
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[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] 726 |              let _ = mem::replace(pkvs, cells);
[INFO] [stdout]     |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "146c089d9e7f08704501d8bd18c7df78d68b6018f7421a4da1d0f3e3833d24a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "146c089d9e7f08704501d8bd18c7df78d68b6018f7421a4da1d0f3e3833d24a6", kill_on_drop: false }`
[INFO] [stdout] 146c089d9e7f08704501d8bd18c7df78d68b6018f7421a4da1d0f3e3833d24a6
