[INFO] cloning repository https://github.com/zxcev/rust_data_struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zxcev/rust_data_struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcev%2Frust_data_struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcev%2Frust_data_struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 958d4b1e4e6d674ba58fd6e466f093f6bc1db862
[INFO] checking zxcev/rust_data_struct against master#ca77504943887037504c7fc0b9bf06dab3910373 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzxcev%2Frust_data_struct" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zxcev/rust_data_struct
[INFO] finished tweaking git repo https://github.com/zxcev/rust_data_struct
[INFO] tweaked toml for git repo https://github.com/zxcev/rust_data_struct written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zxcev/rust_data_struct on toolchain ca77504943887037504c7fc0b9bf06dab3910373
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zxcev/rust_data_struct 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" "+ca77504943887037504c7fc0b9bf06dab3910373" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2c2d905e489079397835289dea52144a38d25dc82841e3a2555171243e0529b
[INFO] running `Command { std: "docker" "start" "-a" "c2c2d905e489079397835289dea52144a38d25dc82841e3a2555171243e0529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2c2d905e489079397835289dea52144a38d25dc82841e3a2555171243e0529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2c2d905e489079397835289dea52144a38d25dc82841e3a2555171243e0529b", kill_on_drop: false }`
[INFO] [stdout] c2c2d905e489079397835289dea52144a38d25dc82841e3a2555171243e0529b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 262f908c098739e7ee1f0dca9c3cb4135348112a55457eebe21bb63f8d56b3e1
[INFO] running `Command { std: "docker" "start" "-a" "262f908c098739e7ee1f0dca9c3cb4135348112a55457eebe21bb63f8d56b3e1", kill_on_drop: false }`
[INFO] [stderr]     Checking data_struct_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> src/hash_map/chaining_hash_map.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     mem,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> src/hash_map/chaining_hash_map.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     mem,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INIT_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_map/chaining_hash_map.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INIT_CAPACITY: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Entry` is never constructed
[INFO] [stdout]  --> src/hash_map/chaining_hash_map.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Entry<K: Hash + Sized + Eq, V: Clone> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<K: Hash + Sized + Eq, V: Clone> Entry<K, V> {
[INFO] [stdout]    | ------------------------------------------------ associated function in this implementation
[INFO] [stdout] 15 |     fn new(key: K, value: V) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bucket` is never constructed
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Bucket<K: Hash + Sized + Eq, V: Clone> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_front`, and `get` are never used
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<K: Hash + Sized + Eq, V: Clone> Bucket<K, V> {
[INFO] [stdout]    | ------------------------------------------------- associated items in this implementation
[INFO] [stdout] 23 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn push_front(&mut self, key: K, value: V) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn get(&self, key: &K) -> Option<V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashMap` is never constructed
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct HashMap<K: Hash + Sized + Eq, V: Clone> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<K: Hash + Sized + Eq, V: Clone> HashMap<K, V> {
[INFO] [stdout]    | -------------------------------------------------- associated items in this implementation
[INFO] [stdout] 48 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn with_capacity(cap: usize) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn insert(&mut self, key: K, value: V) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn get(&self, key: &K) -> Option<V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn exists(&self, key: &K) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn hash(&self, key: &K) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn resize(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INIT_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_map/open_addressing_hash_map.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const INIT_CAPACITY: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Entry` is never constructed
[INFO] [stdout]  --> src/hash_map/open_addressing_hash_map.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Entry<K: Hash + Sized + Eq, V: Clone> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/hash_map/open_addressing_hash_map.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<K: Hash + Sized + Eq, V: Clone> Entry<K, V> {
[INFO] [stdout]    | ------------------------------------------------ associated function in this implementation
[INFO] [stdout] 14 |     fn new(key: K, value: V) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HashMap` is never constructed
[INFO] [stdout]   --> src/hash_map/open_addressing_hash_map.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct HashMap<K: Hash + Sized + Eq, V: Clone> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/hash_map/open_addressing_hash_map.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<K: Hash + Sized + Eq, V: Clone> HashMap<K, V> {
[INFO] [stdout]    | -------------------------------------------------- associated items in this implementation
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn with_capacity(cap: usize) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn insert(&mut self, key: K, value: V) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn get(&self, key: &K) -> Option<V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn exists(&self, key: &K) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn hash(&self, key: &K) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn resize(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INIT_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_map/chaining_hash_map.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INIT_CAPACITY: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `exists` are never used
[INFO] [stdout]   --> src/hash_map/chaining_hash_map.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<K: Hash + Sized + Eq, V: Clone> HashMap<K, V> {
[INFO] [stdout]    | -------------------------------------------------- associated items in this implementation
[INFO] [stdout] 48 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn exists(&self, key: &K) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INIT_CAPACITY` is never used
[INFO] [stdout]  --> src/hash_map/open_addressing_hash_map.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const INIT_CAPACITY: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `exists` are never used
[INFO] [stdout]   --> src/hash_map/open_addressing_hash_map.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<K: Hash + Sized + Eq, V: Clone> HashMap<K, V> {
[INFO] [stdout]    | -------------------------------------------------- associated items in this implementation
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn exists(&self, key: &K) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "262f908c098739e7ee1f0dca9c3cb4135348112a55457eebe21bb63f8d56b3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "262f908c098739e7ee1f0dca9c3cb4135348112a55457eebe21bb63f8d56b3e1", kill_on_drop: false }`
[INFO] [stdout] 262f908c098739e7ee1f0dca9c3cb4135348112a55457eebe21bb63f8d56b3e1