[INFO] cloning repository https://github.com/GabeVillalobos/rust_rb_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GabeVillalobos/rust_rb_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabeVillalobos%2Frust_rb_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabeVillalobos%2Frust_rb_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9d1d5714f79bf320afdb31adfec20813efd5e65
[INFO] testing GabeVillalobos/rust_rb_tree against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabeVillalobos%2Frust_rb_tree" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GabeVillalobos/rust_rb_tree on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GabeVillalobos/rust_rb_tree
[INFO] finished tweaking git repo https://github.com/GabeVillalobos/rust_rb_tree
[INFO] tweaked toml for git repo https://github.com/GabeVillalobos/rust_rb_tree written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generational-arena v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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] 751189a9c808942cadc3b454146cfda6a610a05d3b5ab7608259aed2b2f63e57
[INFO] running `Command { std: "docker" "start" "-a" "751189a9c808942cadc3b454146cfda6a610a05d3b5ab7608259aed2b2f63e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "751189a9c808942cadc3b454146cfda6a610a05d3b5ab7608259aed2b2f63e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751189a9c808942cadc3b454146cfda6a610a05d3b5ab7608259aed2b2f63e57", kill_on_drop: false }`
[INFO] [stdout] 751189a9c808942cadc3b454146cfda6a610a05d3b5ab7608259aed2b2f63e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21d120769b1291ec2abb98a67f6c5e4d9c89924ad4483d449ccd377ba11eb250
[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" "21d120769b1291ec2abb98a67f6c5e4d9c89924ad4483d449ccd377ba11eb250", kill_on_drop: false }`
[INFO] [stderr]    Compiling generational-arena v0.2.8
[INFO] [stderr]    Compiling trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/red_black_tree.rs:245:30
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn remove(&mut self, item: &T) -> Result<(), NodeNotFoundErr> {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "21d120769b1291ec2abb98a67f6c5e4d9c89924ad4483d449ccd377ba11eb250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21d120769b1291ec2abb98a67f6c5e4d9c89924ad4483d449ccd377ba11eb250", kill_on_drop: false }`
[INFO] [stdout] 21d120769b1291ec2abb98a67f6c5e4d9c89924ad4483d449ccd377ba11eb250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--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] dc7a1ad078db9663400204808652bd28b0be67bd380ecaac4ec8085e2123f6ef
[INFO] running `Command { std: "docker" "start" "-a" "dc7a1ad078db9663400204808652bd28b0be67bd380ecaac4ec8085e2123f6ef", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/red_black_tree.rs:245:30
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn remove(&mut self, item: &T) -> Result<(), NodeNotFoundErr> {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/red_black_tree.rs:245:30
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn remove(&mut self, item: &T) -> Result<(), NodeNotFoundErr> {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "dc7a1ad078db9663400204808652bd28b0be67bd380ecaac4ec8085e2123f6ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7a1ad078db9663400204808652bd28b0be67bd380ecaac4ec8085e2123f6ef", kill_on_drop: false }`
[INFO] [stdout] dc7a1ad078db9663400204808652bd28b0be67bd380ecaac4ec8085e2123f6ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41a3ae6921bbd867273749760449933774d67b1e970f363df5d40922f1eca4e0
[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" "41a3ae6921bbd867273749760449933774d67b1e970f363df5d40922f1eca4e0", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]    --> src/red_black_tree.rs:245:30
[INFO] [stderr]     |
[INFO] [stderr] 245 |     pub fn remove(&mut self, item: &T) -> Result<(), NodeNotFoundErr> {
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]    --> src/red_black_tree.rs:245:30
[INFO] [stderr]     |
[INFO] [stderr] 245 |     pub fn remove(&mut self, item: &T) -> Result<(), NodeNotFoundErr> {
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trees-539c7d6aa5852cb4)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bst_tree_tests.rs (/opt/rustwide/target/debug/deps/bst_tree_tests-10a5a3415fd9036f)
[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] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test bst_insertion ... ok
[INFO] [stdout] test test_get_size_after_insert ... ok
[INFO] [stdout] test test_insert_root_node ... ok
[INFO] [stdout] test test_instantiation ... ok
[INFO] [stdout] test remove_node ... ok
[INFO] [stdout] test dfs_traversal ... ok
[INFO] [stdout] test remove_single_root ... ok
[INFO] [stdout] test bfs_traversal ... ok
[INFO] [stdout] test find_items ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/rb_tree_tests.rs (/opt/rustwide/target/debug/deps/rb_tree_tests-5c3ecd7c7ec575a0)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test find_items ... ok
[INFO] [stdout] test dfs_traversal ... ok
[INFO] [stdout] test bfs_traversal ... ok
[INFO] [stdout] test test_insert_root_node ... ok
[INFO] [stdout] test test_get_size_after_insert ... ok
[INFO] [stdout] test right_subtree_rl_case ... ok
[INFO] [stdout] test test_instantiation ... ok
[INFO] [stdout] test right_subtree_with_root_rotation ... ok
[INFO] [stdout] test bst_insertion ... ok
[INFO] [stdout] test left_subtree_with_root_rotation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trees
[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" "41a3ae6921bbd867273749760449933774d67b1e970f363df5d40922f1eca4e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41a3ae6921bbd867273749760449933774d67b1e970f363df5d40922f1eca4e0", kill_on_drop: false }`
[INFO] [stdout] 41a3ae6921bbd867273749760449933774d67b1e970f363df5d40922f1eca4e0