[INFO] cloning repository https://github.com/ReeceMcMillin/Rust-BST
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ReeceMcMillin/Rust-BST" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReeceMcMillin%2FRust-BST", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReeceMcMillin%2FRust-BST'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c93b2deaafb326fb87b8d51fca4a97abc454628
[INFO] testing ReeceMcMillin/Rust-BST against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReeceMcMillin%2FRust-BST" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ReeceMcMillin/Rust-BST on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ReeceMcMillin/Rust-BST
[INFO] finished tweaking git repo https://github.com/ReeceMcMillin/Rust-BST
[INFO] tweaked toml for git repo https://github.com/ReeceMcMillin/Rust-BST written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ReeceMcMillin/Rust-BST already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c1f74ab473849e65d463462e8629f9a4feef419c81433a0b38764f8ef0a7eca
[INFO] running `Command { std: "docker" "start" "-a" "3c1f74ab473849e65d463462e8629f9a4feef419c81433a0b38764f8ef0a7eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c1f74ab473849e65d463462e8629f9a4feef419c81433a0b38764f8ef0a7eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c1f74ab473849e65d463462e8629f9a4feef419c81433a0b38764f8ef0a7eca", kill_on_drop: false }`
[INFO] [stdout] 3c1f74ab473849e65d463462e8629f9a4feef419c81433a0b38764f8ef0a7eca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6b794abd34b88278bbe51f3d14f62037678b12c9ccd762042ab6b19f2cb06db
[INFO] running `Command { std: "docker" "start" "-a" "f6b794abd34b88278bbe51f3d14f62037678b12c9ccd762042ab6b19f2cb06db", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `minimum`
[INFO] [stdout]   --> src/tree.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn minimum(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `maximum`
[INFO] [stdout]   --> src/tree.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn maximum(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/tree.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn search(&self, target: &T) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.95s
[INFO] running `Command { std: "docker" "inspect" "f6b794abd34b88278bbe51f3d14f62037678b12c9ccd762042ab6b19f2cb06db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b794abd34b88278bbe51f3d14f62037678b12c9ccd762042ab6b19f2cb06db", kill_on_drop: false }`
[INFO] [stdout] f6b794abd34b88278bbe51f3d14f62037678b12c9ccd762042ab6b19f2cb06db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c82a3eb44293d9b473c89895c58b2a21a3ca817b72ab3c9f7db4164de92ec3f
[INFO] running `Command { std: "docker" "start" "-a" "9c82a3eb44293d9b473c89895c58b2a21a3ca817b72ab3c9f7db4164de92ec3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `minimum`
[INFO] [stdout]   --> src/tree.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn minimum(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `maximum`
[INFO] [stdout]   --> src/tree.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn maximum(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/tree.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn search(&self, target: &T) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "9c82a3eb44293d9b473c89895c58b2a21a3ca817b72ab3c9f7db4164de92ec3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c82a3eb44293d9b473c89895c58b2a21a3ca817b72ab3c9f7db4164de92ec3f", kill_on_drop: false }`
[INFO] [stdout] 9c82a3eb44293d9b473c89895c58b2a21a3ca817b72ab3c9f7db4164de92ec3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b920c289c1be2f5fbdbd6301ce428aa1dcca0c3f368098faa6dcf310a7a35775
[INFO] running `Command { std: "docker" "start" "-a" "b920c289c1be2f5fbdbd6301ce428aa1dcca0c3f368098faa6dcf310a7a35775", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `minimum`
[INFO] [stderr]   --> src/tree.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn minimum(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `maximum`
[INFO] [stderr]   --> src/tree.rs:69:12
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn maximum(&self) -> Option<&T> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `search`
[INFO] [stderr]   --> src/tree.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn search(&self, target: &T) -> bool {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `trees` (bin "trees" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trees-d62ed6c6b1b16f18)
[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" "b920c289c1be2f5fbdbd6301ce428aa1dcca0c3f368098faa6dcf310a7a35775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b920c289c1be2f5fbdbd6301ce428aa1dcca0c3f368098faa6dcf310a7a35775", kill_on_drop: false }`
[INFO] [stdout] b920c289c1be2f5fbdbd6301ce428aa1dcca0c3f368098faa6dcf310a7a35775