[INFO] cloning repository https://github.com/akihiro17/rust-trie-for-system-interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akihiro17/rust-trie-for-system-interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakihiro17%2Frust-trie-for-system-interview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakihiro17%2Frust-trie-for-system-interview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e02f3f326812ec397fb8eca927a6ff3a10f3cad
[INFO] checking akihiro17/rust-trie-for-system-interview against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakihiro17%2Frust-trie-for-system-interview" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/akihiro17/rust-trie-for-system-interview
[INFO] finished tweaking git repo https://github.com/akihiro17/rust-trie-for-system-interview
[INFO] tweaked toml for git repo https://github.com/akihiro17/rust-trie-for-system-interview written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/akihiro17/rust-trie-for-system-interview on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/akihiro17/rust-trie-for-system-interview 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded random_word v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 475f91101dadbaf73be45a79d63d80c88a3bc39b26b5736f3f39793bf7ce809e
[INFO] running `Command { std: "docker" "start" "-a" "475f91101dadbaf73be45a79d63d80c88a3bc39b26b5736f3f39793bf7ce809e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "475f91101dadbaf73be45a79d63d80c88a3bc39b26b5736f3f39793bf7ce809e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "475f91101dadbaf73be45a79d63d80c88a3bc39b26b5736f3f39793bf7ce809e", kill_on_drop: false }`
[INFO] [stdout] 475f91101dadbaf73be45a79d63d80c88a3bc39b26b5736f3f39793bf7ce809e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a93e36e615ed4146155981baebecce3b0f46dfad5d164723b65471b1973eb38
[INFO] running `Command { std: "docker" "start" "-a" "0a93e36e615ed4146155981baebecce3b0f46dfad5d164723b65471b1973eb38", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking zerocopy v0.7.25
[INFO] [stderr]    Compiling ahash v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking random_word v0.4.1
[INFO] [stderr]     Checking trie-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Reverse`
[INFO] [stdout]    --> src/trie.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use std::cmp::Reverse;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `key` is never read
[INFO] [stdout]  --> src/trie.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Node {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     pub key: char,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find` is never used
[INFO] [stdout]   --> src/trie.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl Root {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn find(&self, word: &str) -> u64 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `root` is never used
[INFO] [stdout]    --> src/trie.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn root() -> trie::Root {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.10s
[INFO] [stdout] warning: field `key` is never read
[INFO] [stdout]  --> src/trie.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Node {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     pub key: char,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0a93e36e615ed4146155981baebecce3b0f46dfad5d164723b65471b1973eb38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a93e36e615ed4146155981baebecce3b0f46dfad5d164723b65471b1973eb38", kill_on_drop: false }`
[INFO] [stdout] 0a93e36e615ed4146155981baebecce3b0f46dfad5d164723b65471b1973eb38
