[INFO] cloning repository https://github.com/roguepnz/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roguepnz/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froguepnz%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froguepnz%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f3b4cab2d641e755a15685a23050da3b44464d9
[INFO] testing roguepnz/leetcode-rust against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froguepnz%2Fleetcode-rust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/roguepnz/leetcode-rust on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/roguepnz/leetcode-rust
[INFO] finished tweaking git repo https://github.com/roguepnz/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/roguepnz/leetcode-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/roguepnz/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 72b25263e9018e9b61179054fa689e39b49aa526633dda324a8eed7f01ea6bf2
[INFO] running `Command { std: "docker" "start" "-a" "72b25263e9018e9b61179054fa689e39b49aa526633dda324a8eed7f01ea6bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72b25263e9018e9b61179054fa689e39b49aa526633dda324a8eed7f01ea6bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b25263e9018e9b61179054fa689e39b49aa526633dda324a8eed7f01ea6bf2", kill_on_drop: false }`
[INFO] [stdout] 72b25263e9018e9b61179054fa689e39b49aa526633dda324a8eed7f01ea6bf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8790329d2be120aa573fa7e56b1a7bbee005b179be10189a9d1ab8973644d82e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8790329d2be120aa573fa7e56b1a7bbee005b179be10189a9d1ab8973644d82e", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/s0485_max_consecutive_ones.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/s0977_sorted_squares.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/s1342_number_of_steps.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/s0144_binary_tree_preorder_traversal.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::panic::resume_unwind`
[INFO] [stdout]  --> src/s0144_binary_tree_preorder_traversal.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::panic::resume_unwind;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_item` is never read
[INFO] [stdout]   --> src/s0485_max_consecutive_ones.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         prev_item = nums[i]
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse_string`
[INFO] [stdout]  --> src/s0344_reverse_string.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse_string(s: &mut Vec<char>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `kids_with_candies`
[INFO] [stdout]  --> src/s1431_kids_with_candies.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn kids_with_candies(candies: Vec<i32>, extra_candies: i32) -> Vec<bool> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_max_consecutive_ones`
[INFO] [stdout]  --> src/s0485_max_consecutive_ones.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn find_max_consecutive_ones(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_mid_idx`
[INFO] [stdout]  --> src/s0977_sorted_squares.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn find_mid_idx(nums: &Vec<i32>) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sorted_squares`
[INFO] [stdout]   --> src/s0977_sorted_squares.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn sorted_squares(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_of_steps`
[INFO] [stdout]  --> src/s1342_number_of_steps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/s0144_binary_tree_preorder_traversal.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `preorder_traversal`
[INFO] [stdout]   --> src/s0144_binary_tree_preorder_traversal.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn preorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8790329d2be120aa573fa7e56b1a7bbee005b179be10189a9d1ab8973644d82e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8790329d2be120aa573fa7e56b1a7bbee005b179be10189a9d1ab8973644d82e", kill_on_drop: false }`
[INFO] [stdout] 8790329d2be120aa573fa7e56b1a7bbee005b179be10189a9d1ab8973644d82e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aabcc256b3ad62cc7fb5ec7084e47c77345fc6b0e413c6652c6db8fe368d08c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aabcc256b3ad62cc7fb5ec7084e47c77345fc6b0e413c6652c6db8fe368d08c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/s0485_max_consecutive_ones.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/s0977_sorted_squares.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/s1342_number_of_steps.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/s0144_binary_tree_preorder_traversal.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::panic::resume_unwind`
[INFO] [stdout]  --> src/s0144_binary_tree_preorder_traversal.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::panic::resume_unwind;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev_item` is never read
[INFO] [stdout]   --> src/s0485_max_consecutive_ones.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         prev_item = nums[i]
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/s0144_binary_tree_preorder_traversal.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.55s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode_rust-10f0677b39af5ce2)
[INFO] running `Command { std: "docker" "inspect" "aabcc256b3ad62cc7fb5ec7084e47c77345fc6b0e413c6652c6db8fe368d08c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aabcc256b3ad62cc7fb5ec7084e47c77345fc6b0e413c6652c6db8fe368d08c8", kill_on_drop: false }`
[INFO] [stdout] aabcc256b3ad62cc7fb5ec7084e47c77345fc6b0e413c6652c6db8fe368d08c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b03ff68f05a375c4632a033e709d74bbdf6f99cc8998d494c70d8a638e75fe0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b03ff68f05a375c4632a033e709d74bbdf6f99cc8998d494c70d8a638e75fe0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout] running 6 tests
[INFO] [stderr]  --> src/s0485_max_consecutive_ones.rs:1:5
[INFO] [stdout] test s1431_kids_with_candies::tests::test_kids_with_candies ... ok
[INFO] [stderr]   |
[INFO] [stdout] test s1342_number_of_steps::tests::test_number_of_steps ... ok
[INFO] [stderr] 1 | use std::fs::read_to_string;
[INFO] [stdout] test s0485_max_consecutive_ones::tests::test_find_max_consecutive_ones ... ok
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test s0344_reverse_string::tests::test_reverse_string ... ok
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `max`, `min`
[INFO] [stderr]  --> src/s0977_sorted_squares.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::{min, max};
[INFO] [stderr]   |                ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::read_to_string`
[INFO] [stderr]  --> src/s1342_number_of_steps.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::read_to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/s0144_binary_tree_preorder_traversal.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::panic::resume_unwind`
[INFO] [stderr]  --> src/s0144_binary_tree_preorder_traversal.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::panic::resume_unwind;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev_item` is never read
[INFO] [stderr]   --> src/s0485_max_consecutive_ones.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         prev_item = nums[i]
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/s0144_binary_tree_preorder_traversal.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(val: i32) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-rust` (bin "leetcode-rust" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode_rust-10f0677b39af5ce2)
[INFO] [stdout] test s0977_sorted_squares::tests::test_sorted_squares ... ok
[INFO] [stdout] test s0144_binary_tree_preorder_traversal::tests::test_preorder_traversal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b03ff68f05a375c4632a033e709d74bbdf6f99cc8998d494c70d8a638e75fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b03ff68f05a375c4632a033e709d74bbdf6f99cc8998d494c70d8a638e75fe0", kill_on_drop: false }`
[INFO] [stdout] 0b03ff68f05a375c4632a033e709d74bbdf6f99cc8998d494c70d8a638e75fe0