[INFO] fetching crate ece_421_sam_cynthia_aditya_trees 0.1.1...
[INFO] testing ece_421_sam_cynthia_aditya_trees-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate ece_421_sam_cynthia_aditya_trees 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1
[INFO] finished tweaking crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1
[INFO] tweaked toml for crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "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] 05b6ad181314597849a3a8a5f4a92bbfbf16ef909d5dfdbd4f693752d1857449
[INFO] running `Command { std: "docker" "start" "-a" "05b6ad181314597849a3a8a5f4a92bbfbf16ef909d5dfdbd4f693752d1857449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05b6ad181314597849a3a8a5f4a92bbfbf16ef909d5dfdbd4f693752d1857449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05b6ad181314597849a3a8a5f4a92bbfbf16ef909d5dfdbd4f693752d1857449", kill_on_drop: false }`
[INFO] [stdout] 05b6ad181314597849a3a8a5f4a92bbfbf16ef909d5dfdbd4f693752d1857449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1401b9ef93e634f616b924261a3c34dc764402bb3c38a3a45a3f429ca68c763f
[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" "1401b9ef93e634f616b924261a3c34dc764402bb3c38a3a45a3f429ca68c763f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ece_421_sam_cynthia_aditya_trees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/AVLTree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/RBTree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/RBTree.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/AVLTree.rs:439:8
[INFO] [stdout]     |
[INFO] [stdout] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[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: `get_nodes_in_order`
[INFO] [stdout]    --> src/RBTree.rs:654:8
[INFO] [stdout]     |
[INFO] [stdout] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod AVLTree;
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RBTree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/AVLTree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/RBTree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/RBTree.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/AVLTree.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn search(&self, val: u32) -> bool {
[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: `get_nodes_in_order`
[INFO] [stdout]    --> src/AVLTree.rs:439:8
[INFO] [stdout]     |
[INFO] [stdout] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/RBTree.rs:353:12
[INFO] [stdout]     |
[INFO] [stdout] 353 |     pub fn search(&mut self, val: u32) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/RBTree.rs:654:8
[INFO] [stdout]     |
[INFO] [stdout] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod AVLTree;
[INFO] [stdout]   |     ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod RBTree;
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.00s
[INFO] running `Command { std: "docker" "inspect" "1401b9ef93e634f616b924261a3c34dc764402bb3c38a3a45a3f429ca68c763f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1401b9ef93e634f616b924261a3c34dc764402bb3c38a3a45a3f429ca68c763f", kill_on_drop: false }`
[INFO] [stdout] 1401b9ef93e634f616b924261a3c34dc764402bb3c38a3a45a3f429ca68c763f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "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] 195f5df8988eb5894f23f5f93a1a9c128ce6080cee0cd51bc64403be91d44e53
[INFO] running `Command { std: "docker" "start" "-a" "195f5df8988eb5894f23f5f93a1a9c128ce6080cee0cd51bc64403be91d44e53", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/AVLTree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/RBTree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/RBTree.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/AVLTree.rs:439:8
[INFO] [stdout]     |
[INFO] [stdout] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[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: `get_nodes_in_order`
[INFO] [stdout]    --> src/RBTree.rs:654:8
[INFO] [stdout]     |
[INFO] [stdout] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod AVLTree;
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RBTree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling plotters v0.3.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling ece_421_sam_cynthia_aditya_trees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/RBTree.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/RBTree.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod AVLTree;
[INFO] [stdout]   |     ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod RBTree;
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod AVLTree;
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RBTree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 28.07s
[INFO] running `Command { std: "docker" "inspect" "195f5df8988eb5894f23f5f93a1a9c128ce6080cee0cd51bc64403be91d44e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "195f5df8988eb5894f23f5f93a1a9c128ce6080cee0cd51bc64403be91d44e53", kill_on_drop: false }`
[INFO] [stdout] 195f5df8988eb5894f23f5f93a1a9c128ce6080cee0cd51bc64403be91d44e53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4233fb6eb070eba3d99180cb5daf9e60d3b7c1b2a53355c2fc4cd44b02e3c31e
[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" "4233fb6eb070eba3d99180cb5daf9e60d3b7c1b2a53355c2fc4cd44b02e3c31e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stderr]  --> src/AVLTree.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::seq::SliceRandom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/AVLTree.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stderr]  --> src/RBTree.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::seq::SliceRandom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/RBTree.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stderr]    --> src/AVLTree.rs:439:8
[INFO] [stderr]     |
[INFO] [stderr] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stderr]    --> src/RBTree.rs:654:8
[INFO] [stderr]     |
[INFO] [stderr] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: module `AVLTree` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod AVLTree;
[INFO] [stderr]   |         ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `RBTree` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub mod RBTree;
[INFO] [stderr]   |         ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stderr] 
[INFO] [stderr] warning: `ece_421_sam_cynthia_aditya_trees` (lib) generated 8 warnings
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/AVLTree.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/RBTree.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: module `AVLTree` should have a snake case name
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | mod AVLTree;
[INFO] [stderr]   |     ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `RBTree` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | mod RBTree;
[INFO] [stderr]   |     ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stderr] 
[INFO] [stderr] warning: `ece_421_sam_cynthia_aditya_trees` (bin "ece_421_sam_cynthia_aditya_trees" test) generated 4 warnings
[INFO] [stderr] warning: `ece_421_sam_cynthia_aditya_trees` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ece_421_sam_cynthia_aditya_trees-29ae89daebd0da1d)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test AVLTree::tests::nodes_deleted_avl ... ok
[INFO] [stdout] test RBTree::tests::nodes_deleted_rb ... ok
[INFO] [stdout] test AVLTree::tests::nodes_sorted_avl ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ece_421_sam_cynthia_aditya_trees-df1fe767d32ffcc1)
[INFO] [stdout] test RBTree::tests::nodes_sorted_rb ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test AVLTree::tests::nodes_deleted_avl ... ok
[INFO] [stdout] test RBTree::tests::nodes_deleted_rb ... ok
[INFO] [stdout] test RBTree::tests::nodes_sorted_rb ... ok
[INFO] [stdout] test AVLTree::tests::nodes_sorted_avl ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ece_421_sam_cynthia_aditya_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" "4233fb6eb070eba3d99180cb5daf9e60d3b7c1b2a53355c2fc4cd44b02e3c31e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4233fb6eb070eba3d99180cb5daf9e60d3b7c1b2a53355c2fc4cd44b02e3c31e", kill_on_drop: false }`
[INFO] [stdout] 4233fb6eb070eba3d99180cb5daf9e60d3b7c1b2a53355c2fc4cd44b02e3c31e