[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 beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabeVillalobos%2Frust_rb_tree" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GabeVillalobos/rust_rb_tree on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-24/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50fd64dddbf44b161edb3cabb7e152a85ff46ec6f829b413d1d6fd55315be377
[INFO] running `Command { std: "docker" "start" "-a" "50fd64dddbf44b161edb3cabb7e152a85ff46ec6f829b413d1d6fd55315be377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50fd64dddbf44b161edb3cabb7e152a85ff46ec6f829b413d1d6fd55315be377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50fd64dddbf44b161edb3cabb7e152a85ff46ec6f829b413d1d6fd55315be377", kill_on_drop: false }`
[INFO] [stdout] 50fd64dddbf44b161edb3cabb7e152a85ff46ec6f829b413d1d6fd55315be377
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f79479692a366213a5b8341519b53695ac5d4996101d317fd1878cbaa6fb3526
[INFO] running `Command { std: "docker" "start" "-a" "f79479692a366213a5b8341519b53695ac5d4996101d317fd1878cbaa6fb3526", 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" "f79479692a366213a5b8341519b53695ac5d4996101d317fd1878cbaa6fb3526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79479692a366213a5b8341519b53695ac5d4996101d317fd1878cbaa6fb3526", kill_on_drop: false }`
[INFO] [stdout] f79479692a366213a5b8341519b53695ac5d4996101d317fd1878cbaa6fb3526
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d17d5bae6994dbe74920673e6ccf8a9416340f1840538b127b69ba908366403
[INFO] running `Command { std: "docker" "start" "-a" "1d17d5bae6994dbe74920673e6ccf8a9416340f1840538b127b69ba908366403", kill_on_drop: false }`
[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] [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 0.49s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/trees-8455de58acbc68ec)
[INFO] [stderr]   Executable tests/bst_tree_tests.rs (/opt/rustwide/target/debug/deps/bst_tree_tests-716668532b31bb52)
[INFO] [stderr]   Executable tests/rb_tree_tests.rs (/opt/rustwide/target/debug/deps/rb_tree_tests-2691976440b1c2ab)
[INFO] running `Command { std: "docker" "inspect" "1d17d5bae6994dbe74920673e6ccf8a9416340f1840538b127b69ba908366403", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d17d5bae6994dbe74920673e6ccf8a9416340f1840538b127b69ba908366403", kill_on_drop: false }`
[INFO] [stdout] 1d17d5bae6994dbe74920673e6ccf8a9416340f1840538b127b69ba908366403
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f37979ef5a34a22a4602e2ac5bfd64338631fac1e3eac5ae1d374a45486f40f
[INFO] running `Command { std: "docker" "start" "-a" "5f37979ef5a34a22a4602e2ac5bfd64338631fac1e3eac5ae1d374a45486f40f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: `trees` (lib) generated 1 warning
[INFO] [stderr] warning: `trees` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/trees-8455de58acbc68ec)
[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] [stderr]      Running tests/bst_tree_tests.rs (/opt/rustwide/target/debug/deps/bst_tree_tests-716668532b31bb52)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test bfs_traversal ... ok
[INFO] [stdout] test dfs_traversal ... ok
[INFO] [stdout] test bst_insertion ... ok
[INFO] [stdout] test find_items ... ok
[INFO] [stdout] test remove_single_root ... ok
[INFO] [stdout] test remove_node ... 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] [stderr]      Running tests/rb_tree_tests.rs (/opt/rustwide/target/debug/deps/rb_tree_tests-2691976440b1c2ab)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test bfs_traversal ... ok
[INFO] [stdout] test bst_insertion ... ok
[INFO] [stdout] test dfs_traversal ... ok
[INFO] [stdout] test find_items ... ok
[INFO] [stdout] test left_subtree_with_root_rotation ... ok
[INFO] [stdout] test right_subtree_rl_case ... ok
[INFO] [stdout] test right_subtree_with_root_rotation ... ok
[INFO] [stdout] test test_get_size_after_insert ... ok
[INFO] [stdout] test test_instantiation ... ok
[INFO] [stdout] test test_insert_root_node ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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" "5f37979ef5a34a22a4602e2ac5bfd64338631fac1e3eac5ae1d374a45486f40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f37979ef5a34a22a4602e2ac5bfd64338631fac1e3eac5ae1d374a45486f40f", kill_on_drop: false }`
[INFO] [stdout] 5f37979ef5a34a22a4602e2ac5bfd64338631fac1e3eac5ae1d374a45486f40f