[INFO] cloning repository https://github.com/muehlbacher/algorithms_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/muehlbacher/algorithms_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuehlbacher%2Falgorithms_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuehlbacher%2Falgorithms_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c2c74cdbe3cf35b59f419ae23c28fc2a33d83f0
[INFO] checking muehlbacher/algorithms_rust against 5b237c915528dadada3f674b90c7c80368b632be for pr-133502-29
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuehlbacher%2Falgorithms_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/muehlbacher/algorithms_rust
[INFO] finished tweaking git repo https://github.com/muehlbacher/algorithms_rust
[INFO] tweaked toml for git repo https://github.com/muehlbacher/algorithms_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/muehlbacher/algorithms_rust on toolchain 5b237c915528dadada3f674b90c7c80368b632be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5b237c915528dadada3f674b90c7c80368b632be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/muehlbacher/algorithms_rust 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" "+5b237c915528dadada3f674b90c7c80368b632be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59
[INFO] running `Command { std: "docker" "start" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59" "/opt/rustwide/cargo-home/bin/cargo" "+5b237c915528dadada3f674b90c7c80368b632be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59" "/opt/rustwide/cargo-home/bin/cargo" "+5b237c915528dadada3f674b90c7c80368b632be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/hash_table_n.rs:51:39
[INFO] [stdout]    |
[INFO] [stdout] 51 |         while let Some((existing_key, value)) = &self.buckets[index] {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/binary_tree.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreeNode<T> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert_left`, and `insert_right` are never used
[INFO] [stdout]   --> src/binary_tree.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> TreeNode<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout]  9 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn insert_left(&mut self, value: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn insert_right(&mut self, value: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INITIAL_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_table.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const INITIAL_CAPACITY: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashTable` is never constructed
[INFO] [stdout]  --> src/hash_table.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct HashTable<K, V> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `hash`, `insert`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/hash_table.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<K: Hash + Eq + Clone, V: Clone> HashTable<K, V> {
[INFO] [stdout]    | ---------------------------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn hash(&self, key: &K) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn insert(&mut self, key: K, value: V) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn get(&self, key: &K) -> Option<&V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn remove(&mut self, key: &K) -> Option<V> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INITIAL_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_table_n.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const INITIAL_CAPACITY: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashTable` is never constructed
[INFO] [stdout]  --> src/hash_table_n.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct HashTable<K, V> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `hash`, `insert`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/hash_table_n.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<K: Hash + Eq + Clone, V: Clone> HashTable<K, V> {
[INFO] [stdout]    | ---------------------------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn hash(&self, key: &K) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn insert(&mut self, key: K, value: V) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn get(&self, key: &K) -> Option<&V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn remove(&mut self, key: &K) -> Option<V> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/linkedlist.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct List {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Link` is never used
[INFO] [stdout]  --> src/linkedlist.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Link {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/linkedlist.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/linkedlist.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl List {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 17 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn push(&mut self, elem: i32) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn pop(&mut self) -> Option<i32> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/hash_table_n.rs:51:39
[INFO] [stdout]    |
[INFO] [stdout] 51 |         while let Some((existing_key, value)) = &self.buckets[index] {
[INFO] [stdout]    |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/binary_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct TreeNode<T> {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 3 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreeNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59", kill_on_drop: false }`
[INFO] [stdout] 9842a7ea96202a7f72f0ae278ca4a394b2c15c06c99bc3403d54a30952a95c59
