[INFO] cloning repository https://github.com/Strife-cyber/bptree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Strife-cyber/bptree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrife-cyber%2Fbptree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrife-cyber%2Fbptree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e27ffc5283283b1bc4714cf88fb1519082ab0fd
[INFO] fixing Strife-cyber/bptree against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrife-cyber%2Fbptree" "/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/Strife-cyber/bptree
[INFO] finished tweaking git repo https://github.com/Strife-cyber/bptree
[INFO] tweaked toml for git repo https://github.com/Strife-cyber/bptree written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Strife-cyber/bptree on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Strife-cyber/bptree 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded axum v0.8.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7
[INFO] running `Command { std: "docker" "start" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking serde_path_to_error v0.1.20
[INFO] [stderr]     Checking bitflags v2.11.1
[INFO] [stderr]     Checking iana-time-zone v0.1.65
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking chrono v0.4.44
[INFO] [stderr]     Checking tower-http v0.6.8
[INFO] [stderr]     Checking axum-core v0.5.6
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking rust-embed-utils v8.11.0
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]     Checking parking_lot_core v0.9.12
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[INFO] [stderr]     Checking signal-hook-registry v1.4.8
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[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling rust-embed-impl v8.11.0
[INFO] [stderr]     Checking tokio v1.52.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
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[INFO] [stderr]     Checking rust-embed v8.11.0
[INFO] [stderr]     Checking btrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: #[derive(RustEmbed)] folder '/opt/rustwide/workdir/ui/dist/' does not exist. cwd: '/opt/rustwide/workdir'
[INFO] [stdout]   --> src/main.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / #[folder = "ui/dist/"]
[INFO] [stdout] 24 | | struct StaticFiles;
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: #[derive(RustEmbed)] folder '/opt/rustwide/workdir/ui/dist/' does not exist. cwd: '/opt/rustwide/workdir'
[INFO] [stdout]   --> src/main.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / #[folder = "ui/dist/"]
[INFO] [stdout] 24 | | struct StaticFiles;
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/pager.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[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: `Uri`
[INFO] [stdout]   --> src/main.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 |     http::{header, StatusCode, Uri},
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/pager.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[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: `Uri`
[INFO] [stdout]   --> src/main.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 |     http::{header, StatusCode, Uri},
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `get` found for struct `StaticFiles` in the current scope
[INFO] [stdout]    --> src/main.rs:125:24
[INFO] [stdout]     |
[INFO] [stdout]  24 | struct StaticFiles;
[INFO] [stdout]     | ------------------ associated function or constant `get` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 125 |     match StaticFiles::get("index.html") {
[INFO] [stdout]     |                        ^^^ associated function or constant not found in `StaticFiles`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `get`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `Embed`
[INFO] [stdout]             candidate #2: `SliceIndex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `get` found for struct `StaticFiles` in the current scope
[INFO] [stdout]    --> src/main.rs:133:24
[INFO] [stdout]     |
[INFO] [stdout]  24 | struct StaticFiles;
[INFO] [stdout]     | ------------------ associated function or constant `get` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 133 |     match StaticFiles::get(&path) {
[INFO] [stdout]     |                        ^^^ associated function or constant not found in `StaticFiles`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `get`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `Embed`
[INFO] [stdout]             candidate #2: `SliceIndex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `get` found for struct `StaticFiles` in the current scope
[INFO] [stdout]    --> src/main.rs:125:24
[INFO] [stdout]     |
[INFO] [stdout]  24 | struct StaticFiles;
[INFO] [stdout]     | ------------------ associated function or constant `get` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 125 |     match StaticFiles::get("index.html") {
[INFO] [stdout]     |                        ^^^ associated function or constant not found in `StaticFiles`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `get`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `Embed`
[INFO] [stdout]             candidate #2: `SliceIndex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `get` found for struct `StaticFiles` in the current scope
[INFO] [stdout]    --> src/main.rs:133:24
[INFO] [stdout]     |
[INFO] [stdout]  24 | struct StaticFiles;
[INFO] [stdout]     | ------------------ associated function or constant `get` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 133 |     match StaticFiles::get(&path) {
[INFO] [stdout]     |                        ^^^ associated function or constant not found in `StaticFiles`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `get`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `Embed`
[INFO] [stdout]             candidate #2: `SliceIndex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btree.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |         let mut root = self.get_node(self.root_id);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/btree.rs:307:21
[INFO] [stdout]     |
[INFO] [stdout] 307 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:328:21
[INFO] [stdout]     |
[INFO] [stdout] 328 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:349:21
[INFO] [stdout]     |
[INFO] [stdout] 349 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:374:21
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:403:21
[INFO] [stdout]     |
[INFO] [stdout] 403 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:429:21
[INFO] [stdout]     |
[INFO] [stdout] 429 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:455:21
[INFO] [stdout]     |
[INFO] [stdout] 455 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:485:21
[INFO] [stdout]     |
[INFO] [stdout] 485 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:524:21
[INFO] [stdout]     |
[INFO] [stdout] 524 |                 let mut new_leaf = LeafNode {
[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/btree.rs:542:21
[INFO] [stdout]     |
[INFO] [stdout] 542 |                 let mut new_internal = InternalNode {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/btree.rs:557:28
[INFO] [stdout]     |
[INFO] [stdout] 557 |             NodeType::Leaf(leaf) => {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/b_minus_tree.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let mut root = self.get_node(self.root_id);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `btrees` (bin "btrees") due to 3 previous errors; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/btree.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |         let mut root = self.get_node(self.root_id);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/btree.rs:307:21
[INFO] [stdout]     |
[INFO] [stdout] 307 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:328:21
[INFO] [stdout]     |
[INFO] [stdout] 328 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:349:21
[INFO] [stdout]     |
[INFO] [stdout] 349 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:374:21
[INFO] [stdout]     |
[INFO] [stdout] 374 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:403:21
[INFO] [stdout]     |
[INFO] [stdout] 403 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:429:21
[INFO] [stdout]     |
[INFO] [stdout] 429 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:455:21
[INFO] [stdout]     |
[INFO] [stdout] 455 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:485:21
[INFO] [stdout]     |
[INFO] [stdout] 485 |                 let mut p_internal = match &mut parent.node_type { NodeType::Internal(i) => i, _ => unreachable!() };
[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/btree.rs:524:21
[INFO] [stdout]     |
[INFO] [stdout] 524 |                 let mut new_leaf = LeafNode {
[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/btree.rs:542:21
[INFO] [stdout]     |
[INFO] [stdout] 542 |                 let mut new_internal = InternalNode {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/btree.rs:557:28
[INFO] [stdout]     |
[INFO] [stdout] 557 |             NodeType::Leaf(leaf) => {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/b_minus_tree.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let mut root = self.get_node(self.root_id);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `btrees` (bin "btrees" test) due to 3 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7", kill_on_drop: false }`
[INFO] [stdout] 60c17312104e3656aa8a190bf6c5e3a151b4cb2eaeeae40e8a33980954dd01f7
