[INFO] cloning repository https://github.com/tada3/binary-tree-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tada3/binary-tree-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftada3%2Fbinary-tree-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftada3%2Fbinary-tree-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a10a550dee688662d35104da8ff6d7f3c55a9d31
[INFO] testing tada3/binary-tree-rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftada3%2Fbinary-tree-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tada3/binary-tree-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tada3/binary-tree-rust
[INFO] finished tweaking git repo https://github.com/tada3/binary-tree-rust
[INFO] tweaked toml for git repo https://github.com/tada3/binary-tree-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/tada3/binary-tree-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25ab3ee877e558aff06d9fcb33330a089020a94f8642b1bf5b54b6e290d11652
[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" "25ab3ee877e558aff06d9fcb33330a089020a94f8642b1bf5b54b6e290d11652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25ab3ee877e558aff06d9fcb33330a089020a94f8642b1bf5b54b6e290d11652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25ab3ee877e558aff06d9fcb33330a089020a94f8642b1bf5b54b6e290d11652", kill_on_drop: false }`
[INFO] [stdout] 25ab3ee877e558aff06d9fcb33330a089020a94f8642b1bf5b54b6e290d11652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee62cae45065c2d845a80a5e33000815a2e651ea8d3ad432209e0af23e3d8c3e
[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" "ee62cae45065c2d845a80a5e33000815a2e651ea8d3ad432209e0af23e3d8c3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `newNode` should have a snake case name
[INFO] [stdout]   --> src/main.rs:97:21
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let newNode = Node::new(x);
[INFO] [stdout]    |                     ^^^^^^^ help: convert the identifier to snake case: `new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `boxedNode` should have a snake case name
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 let boxedNode = Some(Box::new(newNode));
[INFO] [stdout]    |                     ^^^^^^^^^ help: convert the identifier to snake case: `boxed_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "ee62cae45065c2d845a80a5e33000815a2e651ea8d3ad432209e0af23e3d8c3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee62cae45065c2d845a80a5e33000815a2e651ea8d3ad432209e0af23e3d8c3e", kill_on_drop: false }`
[INFO] [stdout] ee62cae45065c2d845a80a5e33000815a2e651ea8d3ad432209e0af23e3d8c3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b385d59a7e5db086ff11ae4dcbf6e04eba3273b2611ebc17e1e96fade8f2d9d
[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" "1b385d59a7e5db086ff11ae4dcbf6e04eba3273b2611ebc17e1e96fade8f2d9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `newNode` should have a snake case name
[INFO] [stdout]   --> src/main.rs:97:21
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let newNode = Node::new(x);
[INFO] [stdout]    |                     ^^^^^^^ help: convert the identifier to snake case: `new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `boxedNode` should have a snake case name
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 let boxedNode = Some(Box::new(newNode));
[INFO] [stdout]    |                     ^^^^^^^^^ help: convert the identifier to snake case: `boxed_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "1b385d59a7e5db086ff11ae4dcbf6e04eba3273b2611ebc17e1e96fade8f2d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b385d59a7e5db086ff11ae4dcbf6e04eba3273b2611ebc17e1e96fade8f2d9d", kill_on_drop: false }`
[INFO] [stdout] 1b385d59a7e5db086ff11ae4dcbf6e04eba3273b2611ebc17e1e96fade8f2d9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", 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] 1adcccaef1776975401ee8fe3524b0442878376310987b237cd0eea51e089820
[INFO] running `Command { std: "docker" "start" "-a" "1adcccaef1776975401ee8fe3524b0442878376310987b237cd0eea51e089820", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: variable `newNode` should have a snake case name
[INFO] [stderr]   --> src/main.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |                 let newNode = Node::new(x);
[INFO] [stderr]    |                     ^^^^^^^ help: convert the identifier to snake case: `new_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `boxedNode` should have a snake case name
[INFO] [stderr]   --> src/main.rs:98:21
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 let boxedNode = Some(Box::new(newNode));
[INFO] [stderr]    |                     ^^^^^^^^^ help: convert the identifier to snake case: `boxed_node`
[INFO] [stderr] 
[INFO] [stderr] warning: `btree` (bin "btree" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.53s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/btree-8cacdd3e8afd2aa0)
[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" "1adcccaef1776975401ee8fe3524b0442878376310987b237cd0eea51e089820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1adcccaef1776975401ee8fe3524b0442878376310987b237cd0eea51e089820", kill_on_drop: false }`
[INFO] [stdout] 1adcccaef1776975401ee8fe3524b0442878376310987b237cd0eea51e089820