[INFO] cloning repository https://github.com/BramVroegop/rust_datastructures_algos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BramVroegop/rust_datastructures_algos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBramVroegop%2Frust_datastructures_algos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBramVroegop%2Frust_datastructures_algos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6546ec5da7f3c38381d4b368acb775d3ca1d054e
[INFO] building BramVroegop/rust_datastructures_algos against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBramVroegop%2Frust_datastructures_algos" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BramVroegop/rust_datastructures_algos on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BramVroegop/rust_datastructures_algos
[INFO] finished tweaking git repo https://github.com/BramVroegop/rust_datastructures_algos
[INFO] tweaked toml for git repo https://github.com/BramVroegop/rust_datastructures_algos written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BramVroegop/rust_datastructures_algos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d42bb0bb75b1a5290f8c1e48ae29ef113027a534ad121e250f9ba2735653231
[INFO] running `Command { std: "docker" "start" "-a" "3d42bb0bb75b1a5290f8c1e48ae29ef113027a534ad121e250f9ba2735653231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d42bb0bb75b1a5290f8c1e48ae29ef113027a534ad121e250f9ba2735653231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d42bb0bb75b1a5290f8c1e48ae29ef113027a534ad121e250f9ba2735653231", kill_on_drop: false }`
[INFO] [stdout] 3d42bb0bb75b1a5290f8c1e48ae29ef113027a534ad121e250f9ba2735653231
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09002a03fa26e7d5b5fc2317f6077840c4d37cfeef56f3c1098b800c2c4beaa7
[INFO] running `Command { std: "docker" "start" "-a" "09002a03fa26e7d5b5fc2317f6077840c4d37cfeef56f3c1098b800c2c4beaa7", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_and_datastructures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `size` and `pop_front` are never used
[INFO] [stdout]   --> src/deque/mod.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T: Debug> Deque<T> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn size(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop_front(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hashable` is never used
[INFO] [stdout]  --> src/hashtable/mod.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Hashable {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashTable` is never constructed
[INFO] [stdout]  --> src/hashtable/mod.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct HashTable<Key: Hashable, Value> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `get`, `get_ref`, and `get_mut` are never used
[INFO] [stdout]   --> src/hashtable/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Key: Hashable, Value> HashTable<Key, Value> {
[INFO] [stdout]    | ------------------------------------------------ associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn insert(&mut self, pair: (Key, Value)) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get(&mut self, key: Key) -> Option<Box<(Key, Value)>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn get_ref(&self, key: Key) -> Option<&Value> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn get_mut(&mut self, key: Key) -> Option<&mut Value> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/linked_list/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/linked_list/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct LinkedList<T> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/linked_list/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn append(&mut self, value: T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Comparable` is never used
[INFO] [stdout]  --> src/tree/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Comparable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/tree/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node<T: Comparable + Display> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/tree/mod.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Tree<T: Comparable + Display> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `print` are never used
[INFO] [stdout]   --> src/tree/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T: Comparable + Display> Tree<T> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn add(&mut self, value: T) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "09002a03fa26e7d5b5fc2317f6077840c4d37cfeef56f3c1098b800c2c4beaa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09002a03fa26e7d5b5fc2317f6077840c4d37cfeef56f3c1098b800c2c4beaa7", kill_on_drop: false }`
[INFO] [stdout] 09002a03fa26e7d5b5fc2317f6077840c4d37cfeef56f3c1098b800c2c4beaa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c5b6171f82e821b75650dafad40db4afb77b1abd9b343fcd0aec10a4e3a70cd
[INFO] running `Command { std: "docker" "start" "-a" "4c5b6171f82e821b75650dafad40db4afb77b1abd9b343fcd0aec10a4e3a70cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_and_datastructures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `size` and `pop_front` are never used
[INFO] [stdout]   --> src/deque/mod.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T: Debug> Deque<T> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn size(&self) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop_front(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hashable` is never used
[INFO] [stdout]  --> src/hashtable/mod.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Hashable {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashTable` is never constructed
[INFO] [stdout]  --> src/hashtable/mod.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct HashTable<Key: Hashable, Value> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `get`, `get_ref`, and `get_mut` are never used
[INFO] [stdout]   --> src/hashtable/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Key: Hashable, Value> HashTable<Key, Value> {
[INFO] [stdout]    | ------------------------------------------------ associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn insert(&mut self, pair: (Key, Value)) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get(&mut self, key: Key) -> Option<Box<(Key, Value)>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn get_ref(&self, key: Key) -> Option<&Value> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn get_mut(&mut self, key: Key) -> Option<&mut Value> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/linked_list/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Node<T> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/linked_list/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct LinkedList<T> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `append`, and `pop` are never used
[INFO] [stdout]   --> src/linked_list/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn append(&mut self, value: T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Comparable` is never used
[INFO] [stdout]  --> src/tree/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Comparable {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/tree/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node<T: Comparable + Display> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/tree/mod.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Tree<T: Comparable + Display> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `print` are never used
[INFO] [stdout]   --> src/tree/mod.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T: Comparable + Display> Tree<T> {
[INFO] [stdout]    | ------------------------------------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn add(&mut self, value: T) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "4c5b6171f82e821b75650dafad40db4afb77b1abd9b343fcd0aec10a4e3a70cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c5b6171f82e821b75650dafad40db4afb77b1abd9b343fcd0aec10a4e3a70cd", kill_on_drop: false }`
[INFO] [stdout] 4c5b6171f82e821b75650dafad40db4afb77b1abd9b343fcd0aec10a4e3a70cd
