[INFO] cloning repository https://github.com/douchuan/algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/douchuan/algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouchuan%2Falgorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouchuan%2Falgorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e543df17725a46c9996077108dfec08a45284d8c
[INFO] checking douchuan/algorithm against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouchuan%2Falgorithm" "/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/douchuan/algorithm on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/douchuan/algorithm
[INFO] finished tweaking git repo https://github.com/douchuan/algorithm
[INFO] tweaked toml for git repo https://github.com/douchuan/algorithm written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/douchuan/algorithm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40c0b0d7ac94a5a63b6d2f6bd8f714259fecfbd72ab07be349cfb3011e6d2209
[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" "40c0b0d7ac94a5a63b6d2f6bd8f714259fecfbd72ab07be349cfb3011e6d2209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40c0b0d7ac94a5a63b6d2f6bd8f714259fecfbd72ab07be349cfb3011e6d2209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c0b0d7ac94a5a63b6d2f6bd8f714259fecfbd72ab07be349cfb3011e6d2209", kill_on_drop: false }`
[INFO] [stdout] 40c0b0d7ac94a5a63b6d2f6bd8f714259fecfbd72ab07be349cfb3011e6d2209
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 49d2a41289e6491a6a1e8dcc968c2718b2007aa7ccdd1830aea330886b847926
[INFO] running `Command { std: "docker" "start" "-a" "49d2a41289e6491a6a1e8dcc968c2718b2007aa7ccdd1830aea330886b847926", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::tree::binary::bst::BSTree`
[INFO] [stdout]    --> src/tree/binary/rb.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |     use crate::tree::binary::bst::BSTree;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert`
[INFO] [stdout]    --> src/tree/binary/rb.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn insert<T>(root: Option<NonNull<Node<T>>>, element: T) -> Option<NonNull<Node<T>>>
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert_fix`
[INFO] [stdout]    --> src/tree/binary/rb.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn insert_fix<T>(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate_left`
[INFO] [stdout]    --> src/tree/binary/rb.rs:191:4
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn rotate_left<T>(
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate_right`
[INFO] [stdout]    --> src/tree/binary/rb.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn rotate_right<T>(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "49d2a41289e6491a6a1e8dcc968c2718b2007aa7ccdd1830aea330886b847926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49d2a41289e6491a6a1e8dcc968c2718b2007aa7ccdd1830aea330886b847926", kill_on_drop: false }`
[INFO] [stdout] 49d2a41289e6491a6a1e8dcc968c2718b2007aa7ccdd1830aea330886b847926