[INFO] cloning repository https://github.com/Andy-0414/rust_first
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Andy-0414/rust_first" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndy-0414%2Frust_first", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndy-0414%2Frust_first'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ec726789de4f670ad6c53d755c77f2aa624e212
[INFO] testing Andy-0414/rust_first against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndy-0414%2Frust_first" "/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/Andy-0414/rust_first
[INFO] finished tweaking git repo https://github.com/Andy-0414/rust_first
[INFO] tweaked toml for git repo https://github.com/Andy-0414/rust_first written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Andy-0414/rust_first on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Andy-0414/rust_first 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 336ab9701571956ac959407eb64bf7ddc427301bf65c564d0af8d21f3de77afb
[INFO] running `Command { std: "docker" "start" "-a" "336ab9701571956ac959407eb64bf7ddc427301bf65c564d0af8d21f3de77afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "336ab9701571956ac959407eb64bf7ddc427301bf65c564d0af8d21f3de77afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "336ab9701571956ac959407eb64bf7ddc427301bf65c564d0af8d21f3de77afb", kill_on_drop: false }`
[INFO] [stdout] 336ab9701571956ac959407eb64bf7ddc427301bf65c564d0af8d21f3de77afb
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f366525d6b691375b5138d204e1929b21cbb426bd9023f657cc76f984226f3d
[INFO] running `Command { std: "docker" "start" "-a" "0f366525d6b691375b5138d204e1929b21cbb426bd9023f657cc76f984226f3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `io` and `result`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, result};
[INFO] [stdout]   |           ^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |             if (currentTree.value == value) {
[INFO] [stdout]    |                ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -             if (currentTree.value == value) {
[INFO] [stdout] 23 +             if currentTree.value == value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |             nextTree = if (currentTree.value > value) {
[INFO] [stdout]    |                           ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -             nextTree = if (currentTree.value > value) {
[INFO] [stdout] 27 +             nextTree = if currentTree.value > value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |             if (currentTree.value == value) {
[INFO] [stdout]    |                ^                          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -             if (currentTree.value == value) {
[INFO] [stdout] 65 +             if currentTree.value == value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |             nextTree = if (currentTree.value > value) {
[INFO] [stdout]    |                           ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -             nextTree = if (currentTree.value > value) {
[INFO] [stdout] 69 +             nextTree = if currentTree.value > value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `search` is never used
[INFO] [stdout]   --> src/main.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl BSTNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn search(&mut self, value: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currentTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut currentTree = self;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nextTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut nextTree;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `subTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stdout]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currentTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let mut currentTree = self;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nextTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut nextTree;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `subTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:79:30
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stdout]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bstTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut bstTree = BSTNode::new(10);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `bst_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "0f366525d6b691375b5138d204e1929b21cbb426bd9023f657cc76f984226f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f366525d6b691375b5138d204e1929b21cbb426bd9023f657cc76f984226f3d", kill_on_drop: false }`
[INFO] [stdout] 0f366525d6b691375b5138d204e1929b21cbb426bd9023f657cc76f984226f3d
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec4cc6a4f6209e951abe6568aae30cbbaed966123412aee16f09220de2a7cfdc
[INFO] running `Command { std: "docker" "start" "-a" "ec4cc6a4f6209e951abe6568aae30cbbaed966123412aee16f09220de2a7cfdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `io` and `result`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, result};
[INFO] [stdout]   |           ^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |             if (currentTree.value == value) {
[INFO] [stdout]    |                ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -             if (currentTree.value == value) {
[INFO] [stdout] 23 +             if currentTree.value == value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |             nextTree = if (currentTree.value > value) {
[INFO] [stdout]    |                           ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -             nextTree = if (currentTree.value > value) {
[INFO] [stdout] 27 +             nextTree = if currentTree.value > value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |             if (currentTree.value == value) {
[INFO] [stdout]    |                ^                          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -             if (currentTree.value == value) {
[INFO] [stdout] 65 +             if currentTree.value == value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:69:27
[INFO] [stdout]    |
[INFO] [stdout] 69 |             nextTree = if (currentTree.value > value) {
[INFO] [stdout]    |                           ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -             nextTree = if (currentTree.value > value) {
[INFO] [stdout] 69 +             nextTree = if currentTree.value > value {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `search` is never used
[INFO] [stdout]   --> src/main.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl BSTNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn search(&mut self, value: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currentTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut currentTree = self;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nextTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut nextTree;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `subTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stdout]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `currentTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let mut currentTree = self;
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nextTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut nextTree;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `subTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:79:30
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stdout]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `bstTree` should have a snake case name
[INFO] [stdout]   --> src/main.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut bstTree = BSTNode::new(10);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `bst_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "ec4cc6a4f6209e951abe6568aae30cbbaed966123412aee16f09220de2a7cfdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4cc6a4f6209e951abe6568aae30cbbaed966123412aee16f09220de2a7cfdc", kill_on_drop: false }`
[INFO] [stdout] ec4cc6a4f6209e951abe6568aae30cbbaed966123412aee16f09220de2a7cfdc
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1011ad9871ff520c96f06bb86df1e0ac8172279774944dc84284ca04348f5dda
[INFO] running `Command { std: "docker" "start" "-a" "1011ad9871ff520c96f06bb86df1e0ac8172279774944dc84284ca04348f5dda", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `io` and `result`
[INFO] [stderr]  --> src/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io, result};
[INFO] [stderr]   |           ^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |             if (currentTree.value == value) {
[INFO] [stderr]    |                ^                          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 23 -             if (currentTree.value == value) {
[INFO] [stderr] 23 +             if currentTree.value == value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 |             nextTree = if (currentTree.value > value) {
[INFO] [stderr]    |                           ^                         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 -             nextTree = if (currentTree.value > value) {
[INFO] [stderr] 27 +             nextTree = if currentTree.value > value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |             if (currentTree.value == value) {
[INFO] [stderr]    |                ^                          ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 65 -             if (currentTree.value == value) {
[INFO] [stderr] 65 +             if currentTree.value == value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:69:27
[INFO] [stderr]    |
[INFO] [stderr] 69 |             nextTree = if (currentTree.value > value) {
[INFO] [stderr]    |                           ^                         ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 69 -             nextTree = if (currentTree.value > value) {
[INFO] [stderr] 69 +             nextTree = if currentTree.value > value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: method `search` is never used
[INFO] [stderr]   --> src/main.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl BSTNode {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 60 |     pub fn search(&mut self, value: i32) -> bool {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `currentTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let mut currentTree = self;
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nextTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut nextTree;
[INFO] [stderr]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `subTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:38:30
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stderr]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `currentTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:61:17
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let mut currentTree = self;
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `current_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nextTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let mut nextTree;
[INFO] [stderr]    |                 ^^^^^^^^ help: convert the identifier to snake case: `next_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `subTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:79:30
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Some(ref mut subTree) => currentTree = subTree,
[INFO] [stderr]    |                              ^^^^^^^ help: convert the identifier to snake case: `sub_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `bstTree` should have a snake case name
[INFO] [stderr]   --> src/main.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut bstTree = BSTNode::new(10);
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case: `bst_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: `first_rust` (bin "first_rust" test) generated 13 warnings (run `cargo fix --bin "first_rust" --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/first_rust-b694e057e2187886)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1011ad9871ff520c96f06bb86df1e0ac8172279774944dc84284ca04348f5dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1011ad9871ff520c96f06bb86df1e0ac8172279774944dc84284ca04348f5dda", kill_on_drop: false }`
[INFO] [stdout] 1011ad9871ff520c96f06bb86df1e0ac8172279774944dc84284ca04348f5dda
