[INFO] cloning repository https://github.com/Yarten/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yarten/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarten%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarten%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8e8cc8467c8f18cdc1fbada83d7382f47adfd5a
[INFO] checking Yarten/leetcode against try#78c81ee3917a99dcff6e2e6822800f0492c415c3 for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYarten%2Fleetcode" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Yarten/leetcode
[INFO] finished tweaking git repo https://github.com/Yarten/leetcode
[INFO] tweaked toml for git repo https://github.com/Yarten/leetcode written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Yarten/leetcode on toolchain 78c81ee3917a99dcff6e2e6822800f0492c415c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Yarten/leetcode 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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8b2b210e49e686f51cb755a9021c957bfc019194a1ff8462d33607185f40da9
[INFO] running `Command { std: "docker" "start" "-a" "c8b2b210e49e686f51cb755a9021c957bfc019194a1ff8462d33607185f40da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8b2b210e49e686f51cb755a9021c957bfc019194a1ff8462d33607185f40da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8b2b210e49e686f51cb755a9021c957bfc019194a1ff8462d33607185f40da9", kill_on_drop: false }`
[INFO] [stdout] c8b2b210e49e686f51cb755a9021c957bfc019194a1ff8462d33607185f40da9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d002080b3063deceb9a4a6464c9d93417bfa2977b9f6562c5f66ebeed7b36595
[INFO] running `Command { std: "docker" "start" "-a" "d002080b3063deceb9a4a6464c9d93417bfa2977b9f6562c5f66ebeed7b36595", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/prob1641.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for ni in (1..n) {
[INFO] [stdout]    |                   ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for ni in (1..n) {
[INFO] [stdout] 13 +         for ni in 1..n  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/prob1641.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |             for i in (0..5) {
[INFO] [stdout]    |                      ^    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -             for i in (0..5) {
[INFO] [stdout] 16 +             for i in 0..5  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/bin/learn_list.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/bin/learn_list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/bin/prob877.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 118 | /         'dfs: loop {
[INFO] [stdout] 119 | |             let curr_node = stack.last_mut().unwrap();
[INFO] [stdout] ...   |
[INFO] [stdout] 151 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 154 |           return start_state.valid;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/bin/prob877.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 118 | /         'dfs: loop {
[INFO] [stdout] 119 | |             let curr_node = stack.last_mut().unwrap();
[INFO] [stdout] ...   |
[INFO] [stdout] 151 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 154 |           return start_state.valid;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/prob1641.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for ni in (1..n) {
[INFO] [stdout]    |                   ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for ni in (1..n) {
[INFO] [stdout] 13 +         for ni in 1..n  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/prob1641.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |             for i in (0..5) {
[INFO] [stdout]    |                      ^    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -             for i in (0..5) {
[INFO] [stdout] 16 +             for i in 0..5  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ni`
[INFO] [stdout]   --> src/bin/prob1641.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for ni in (1..n) {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_ni`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `stack` as mutable more than once at a time
[INFO] [stdout]    --> src/bin/prob877.rs:130:25
[INFO] [stdout]     |
[INFO] [stdout] 119 |             let curr_node = stack.last_mut().unwrap();
[INFO] [stdout]     |                             ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 130 |                         stack.push(Node::new(piles, curr_state));
[INFO] [stdout]     |                         ^^^^^                       ---------- first borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `stack` as mutable more than once at a time
[INFO] [stdout]    --> src/bin/prob877.rs:130:25
[INFO] [stdout]     |
[INFO] [stdout] 119 |             let curr_node = stack.last_mut().unwrap();
[INFO] [stdout]     |                             ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 130 |                         stack.push(Node::new(piles, curr_state));
[INFO] [stdout]     |                         ^^^^^                       ---------- first borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ni`
[INFO] [stdout]   --> src/bin/prob1641.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for ni in (1..n) {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_ni`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/bin/learn_list.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/bin/learn_list.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `get` exists for struct `HashMap<K, std::collections::linked_list::Iter<'a, V>>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/bin/prob146.rs:20:43
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if let Some(it) = self.data_iters.get(key) {
[INFO] [stdout]    |                                           ^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `K: Eq`
[INFO] [stdout]            `K: Hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/bin/prob146.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |             Some(it.deref())
[INFO] [stdout]    |                  ^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (bin "prob877" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `leetcode` (bin "prob877") due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0599]: the method `get_mut` exists for struct `HashMap<K, std::collections::linked_list::Iter<'a, V>>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/bin/prob146.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |         if let Some(it) = self.data_iters.get_mut(key) {
[INFO] [stdout]    |                                           ^^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `K: Eq`
[INFO] [stdout]            `K: Hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `LRUCache<'_, _, _>`
[INFO] [stdout]   --> src/bin/prob146.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let x = LRUCache::new(3);
[INFO] [stdout]    |         ^   ---------------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `x` an explicit type, where the type for type parameter `K` is specified
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let x: LRUCache<'_, K, V> = LRUCache::new(3);
[INFO] [stdout]    |          ++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `get` exists for struct `HashMap<K, std::collections::linked_list::Iter<'a, V>>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/bin/prob146.rs:20:43
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if let Some(it) = self.data_iters.get(key) {
[INFO] [stdout]    |                                           ^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `K: Eq`
[INFO] [stdout]            `K: Hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] warning: type `Node<T>` is more private than the item `NullableNodePtr`
[INFO] [stdout]   --> src/bin/learn_list.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type NullableNodePtr<T> = Option<NodePtr<T>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ type alias `NullableNodePtr` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Node<T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/bin/learn_list.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct Node<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/bin/prob146.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |             Some(it.deref())
[INFO] [stdout]    |                  ^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `get_mut` exists for struct `HashMap<K, std::collections::linked_list::Iter<'a, V>>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/bin/prob146.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |         if let Some(it) = self.data_iters.get_mut(key) {
[INFO] [stdout]    |                                           ^^^^^^^ method cannot be called due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `K: Eq`
[INFO] [stdout]            `K: Hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `LRUCache<'_, _, _>`
[INFO] [stdout]   --> src/bin/prob146.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let x = LRUCache::new(3);
[INFO] [stdout]    |         ^   ---------------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `x` an explicit type, where the type for type parameter `K` is specified
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let x: LRUCache<'_, K, V> = LRUCache::new(3);
[INFO] [stdout]    |          ++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Node<T>` is more private than the item `NullableNodePtr`
[INFO] [stdout]   --> src/bin/learn_list.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type NullableNodePtr<T> = Option<NodePtr<T>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ type alias `NullableNodePtr` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Node<T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/bin/learn_list.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct Node<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (bin "prob146") due to 4 previous errors
[INFO] [stderr] error: could not compile `leetcode` (bin "prob146" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "d002080b3063deceb9a4a6464c9d93417bfa2977b9f6562c5f66ebeed7b36595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d002080b3063deceb9a4a6464c9d93417bfa2977b9f6562c5f66ebeed7b36595", kill_on_drop: false }`
[INFO] [stdout] d002080b3063deceb9a4a6464c9d93417bfa2977b9f6562c5f66ebeed7b36595
