[INFO] cloning repository https://github.com/ZhuJiaqi9905/leetcode_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZhuJiaqi9905/leetcode_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhuJiaqi9905%2Fleetcode_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhuJiaqi9905%2Fleetcode_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b57e67bb3cc34f2bbfc945eb428fa3f2e8be72c
[INFO] checking ZhuJiaqi9905/leetcode_rust/8b57e67bb3cc34f2bbfc945eb428fa3f2e8be72c against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhuJiaqi9905%2Fleetcode_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZhuJiaqi9905/leetcode_rust on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZhuJiaqi9905/leetcode_rust
[INFO] finished tweaking git repo https://github.com/ZhuJiaqi9905/leetcode_rust
[INFO] tweaked toml for git repo https://github.com/ZhuJiaqi9905/leetcode_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ZhuJiaqi9905/leetcode_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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a435df198edfc96130a3b91e83385f38a3d4ff02bf8b27bf428fd5e7fc898e3
[INFO] running `Command { std: "docker" "start" "-a" "2a435df198edfc96130a3b91e83385f38a3d4ff02bf8b27bf428fd5e7fc898e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a435df198edfc96130a3b91e83385f38a3d4ff02bf8b27bf428fd5e7fc898e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a435df198edfc96130a3b91e83385f38a3d4ff02bf8b27bf428fd5e7fc898e3", kill_on_drop: false }`
[INFO] [stdout] 2a435df198edfc96130a3b91e83385f38a3d4ff02bf8b27bf428fd5e7fc898e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e605a6745a130270972bca70c65d019663e403c9ef55970c510b866119c08a53
[INFO] running `Command { std: "docker" "start" "-a" "e605a6745a130270972bca70c65d019663e403c9ef55970c510b866119c08a53", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0252]: the name `Rc` is defined multiple times
[INFO] [stdout]   --> examples/993e_cousins_in_binary_tree.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use std::rc::Rc;
[INFO] [stdout]    |     ----------- previous import of the type `Rc` here
[INFO] [stdout] ...
[INFO] [stdout] 21 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^ `Rc` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rc` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `RefCell` is defined multiple times
[INFO] [stdout]   --> examples/993e_cousins_in_binary_tree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::cell::RefCell;
[INFO] [stdout]    |     ------------------ previous import of the type `RefCell` here
[INFO] [stdout] ...
[INFO] [stdout] 22 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ `RefCell` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefCell` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> examples/993e_cousins_in_binary_tree.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> examples/993e_cousins_in_binary_tree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `993e_cousins_in_binary_tree`
[INFO] [stdout]   --> examples/993e_cousins_in_binary_tree.rs:92:2
[INFO] [stdout]    |
[INFO] [stdout] 92 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/993e_cousins_in_binary_tree.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `base` should have an upper case name
[INFO] [stdout]  --> examples/1061m_lexicographically_smallest_equivalent_string.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |          const base: u8 = 'a' as u8;
[INFO] [stdout]   |                ^^^^ help: convert the identifier to upper case: `BASE`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `flatten` is never used
[INFO] [stdout]   --> examples/114m_flatten_binary_tree_to_linked_list.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     pub fn flatten(root: &mut Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/114m_flatten_binary_tree_to_linked_list.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/1373h_maximum_sum_BST_in_binary_tree.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut node3 = TreeNode::new(-5);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0252, E0601.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0252`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (example "993e_cousins_in_binary_tree") due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/94e_binary_tree_inorder_traversal.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character `' '` in crate name: `235e_ lowest_common_ancestor_of_a_binary_search_tree`
[INFO] [stdout]   |
[INFO] [stdout]   = help: you can either pass `--crate-name` on the command line or add `#![crate_name="…"]` to set the crate name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> examples/100e_is_same_tree.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> examples/100e_is_same_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> examples/100e_is_same_tree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> examples/35e_search_insert_position.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (example "235e_ lowest_common_ancestor_of_a_binary_search_tree") due to 2 previous errors
[INFO] [stdout] warning: unused variable: `piles`
[INFO] [stdout]  --> examples/877m_stone_game.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn stone_game(piles: Vec<i32>) -> bool {
[INFO] [stdout]   |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_piles`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `stone_game` is never used
[INFO] [stdout]  --> examples/877m_stone_game.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 2 |     pub fn stone_game(piles: Vec<i32>) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> examples/877m_stone_game.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `search_insert` and `left_bound` are never used
[INFO] [stdout]   --> examples/35e_search_insert_position.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 9  |     pub fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn left_bound(nums: &[i32], target: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/35e_search_insert_position.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_same_tree` is never used
[INFO] [stdout]   --> examples/100e_is_same_tree.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn is_same_tree(
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/100e_is_same_tree.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `inorder_traversal` and `dfs` are never used
[INFO] [stdout]   --> examples/94e_binary_tree_inorder_traversal.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 23 |     pub fn inorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn dfs(root: Option<Rc<RefCell<TreeNode>>>, ans: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> examples/94e_binary_tree_inorder_traversal.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e605a6745a130270972bca70c65d019663e403c9ef55970c510b866119c08a53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e605a6745a130270972bca70c65d019663e403c9ef55970c510b866119c08a53", kill_on_drop: false }`
[INFO] [stdout] e605a6745a130270972bca70c65d019663e403c9ef55970c510b866119c08a53