[INFO] cloning repository https://github.com/mdomans/LFU
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdomans/LFU" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdomans%2FLFU", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdomans%2FLFU'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c63537929a09844fee0074849f4578751695002
[INFO] checking mdomans/LFU against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdomans%2FLFU" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdomans/LFU on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdomans/LFU
[INFO] finished tweaking git repo https://github.com/mdomans/LFU
[INFO] tweaked toml for git repo https://github.com/mdomans/LFU written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mdomans/LFU already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efe42e8681244bc15c2f8b9d61e9580d0838bb413f06a54f52510fa97818f195
[INFO] running `Command { std: "docker" "start" "-a" "efe42e8681244bc15c2f8b9d61e9580d0838bb413f06a54f52510fa97818f195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efe42e8681244bc15c2f8b9d61e9580d0838bb413f06a54f52510fa97818f195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efe42e8681244bc15c2f8b9d61e9580d0838bb413f06a54f52510fa97818f195", kill_on_drop: false }`
[INFO] [stdout] efe42e8681244bc15c2f8b9d61e9580d0838bb413f06a54f52510fa97818f195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 003aa9f26a6c18e1dc9d8680fa95d9bf309a592d643d421199cf32a97a526f1a
[INFO] running `Command { std: "docker" "start" "-a" "003aa9f26a6c18e1dc9d8680fa95d9bf309a592d643d421199cf32a97a526f1a", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking LFU v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/lib.rs (2 fixes)
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:25:16
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub fn new (data: String, key: String, frequency_node: Arc<RefCell<FrequencyNode>>) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/lib.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn set(&mut self, key: String, data:String) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/lib.rs:107:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |         pub fn get(&self, key: String) -> Option<String> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_stats`
[INFO] [stdout]    --> src/lib.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 |         pub fn print_stats(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/lib.rs (2 fixes)
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:25:16
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub fn new (data: String, key: String, frequency_node: Arc<RefCell<FrequencyNode>>) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/lib.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn set(&mut self, key: String, data:String) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/lib.rs:107:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |         pub fn get(&self, key: String) -> Option<String> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_stats`
[INFO] [stdout]    --> src/lib.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 |         pub fn print_stats(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking LFU v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:25:16
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub fn new (data: String, key: String, frequency_node: Arc<RefCell<FrequencyNode>>) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/lib.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn set(&mut self, key: String, data:String) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/lib.rs:107:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |         pub fn get(&self, key: String) -> Option<String> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_stats`
[INFO] [stdout]    --> src/lib.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 |         pub fn print_stats(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:25:16
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub fn new (data: String, key: String, frequency_node: Arc<RefCell<FrequencyNode>>) -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/lib.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         pub fn set(&mut self, key: String, data:String) {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/lib.rs:107:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |         pub fn get(&self, key: String) -> Option<String> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_stats`
[INFO] [stdout]    --> src/lib.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 |         pub fn print_stats(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Link`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Link = Option<Box<FrequencyNode>>;
[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: `new`
[INFO] [stdout]   --> src/lib.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   pub fn new(frequency: i32, prev: Option<Arc<RefCell<FrequencyNode>>>, next: Option<Arc<RefCell<FrequencyNode>>>, items: HashSet<Str...
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_item`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |         fn delete_item(&self, _item:Item) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LFU` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `lfu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "003aa9f26a6c18e1dc9d8680fa95d9bf309a592d643d421199cf32a97a526f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "003aa9f26a6c18e1dc9d8680fa95d9bf309a592d643d421199cf32a97a526f1a", kill_on_drop: false }`
[INFO] [stdout] 003aa9f26a6c18e1dc9d8680fa95d9bf309a592d643d421199cf32a97a526f1a