[INFO] cloning repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ch3nYe/LeetCode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCh3nYe%2FLeetCode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCh3nYe%2FLeetCode'...
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] updating cached repository https://github.com/Ch3nYe/LeetCode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 211b432f9f4e1ca8b78c99b5eeb317c4f747722e
[INFO] checking Ch3nYe/LeetCode against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCh3nYe%2FLeetCode" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ch3nYe/LeetCode on toolchain 7308c22c6a8d77e82187e290e1f7459870e48d12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ch3nYe/LeetCode
[INFO] finished tweaking git repo https://github.com/Ch3nYe/LeetCode
[INFO] tweaked toml for git repo https://github.com/Ch3nYe/LeetCode written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79022cc426f25cb2e1590d506f0c5861b06818e0f56cdb5cbdf0b191dfda6657
[INFO] running `Command { std: "docker" "start" "-a" "79022cc426f25cb2e1590d506f0c5861b06818e0f56cdb5cbdf0b191dfda6657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79022cc426f25cb2e1590d506f0c5861b06818e0f56cdb5cbdf0b191dfda6657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79022cc426f25cb2e1590d506f0c5861b06818e0f56cdb5cbdf0b191dfda6657", kill_on_drop: false }`
[INFO] [stdout] 79022cc426f25cb2e1590d506f0c5861b06818e0f56cdb5cbdf0b191dfda6657
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c1f0f38930ef861eb30b24571e4ac2f295122c23bd9392330e3a7c503c304ce
[INFO] running `Command { std: "docker" "start" "-a" "0c1f0f38930ef861eb30b24571e4ac2f295122c23bd9392330e3a7c503c304ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking LeetCode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]    --> src/test_utilities.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 |     use std::cmp::Ordering;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] help: consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]    --> src/test_utilities.rs:255:1
[INFO] [stdout]     |
[INFO] [stdout] 255 | mod tests {
[INFO] [stdout]     | ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Int` and `List` are never constructed
[INFO] [stdout]   --> src/data_structures.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum NestedInteger {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 19 |     Int(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 20 |     List(Vec<Self>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `NestedInteger` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/data_structures.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/data_structures.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_tree` is never used
[INFO] [stdout]   --> src/test_utilities.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn compare_tree(lhs: &Option<Rc<RefCell<TreeNode>>>, rhs: &Option<Rc<RefCell<TreeNode>>>) -> Ordering {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_node` is never used
[INFO] [stdout]   --> src/test_utilities.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn find_node(root: &Option<Rc<RefCell<TreeNode>>>, val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `invert_tree` is never used
[INFO] [stdout]   --> src/test_utilities.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn invert_tree(root: Option<&RefCell<TreeNode>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_list` is never used
[INFO] [stdout]    --> src/test_utilities.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn iter_list(list: &Option<Box<ListNode>>) -> impl Iterator<Item = &i32> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_tree_pre_order` is never used
[INFO] [stdout]    --> src/test_utilities.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn iter_tree_pre_order(root: Option<Rc<RefCell<TreeNode>>>) -> impl Iterator<Item = i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_tree_post_order` is never used
[INFO] [stdout]    --> src/test_utilities.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn iter_tree_post_order(root: Option<Rc<RefCell<TreeNode>>>) -> impl Iterator<Item = i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_list` is never used
[INFO] [stdout]    --> src/test_utilities.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | pub fn make_list<I: IntoIterator<Item = i32>>(values: I) -> Option<Box<ListNode>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_tree` is never used
[INFO] [stdout]    --> src/test_utilities.rs:187:8
[INFO] [stdout]     |
[INFO] [stdout] 187 | pub fn make_tree<I: IntoIterator<Item = Option<i32>>>(values: I) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted_by` is never used
[INFO] [stdout]    --> src/test_utilities.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn unstable_sorted_by<T>(iter: impl IntoIterator<Item = T>, compare: impl FnMut(&T, &T) -> Ordering) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted_by_key` is never used
[INFO] [stdout]    --> src/test_utilities.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 | pub fn unstable_sorted_by_key<T, K: Ord>(iter: impl IntoIterator<Item = T>, f: impl FnMut(&T) -> K) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted` is never used
[INFO] [stdout]    --> src/test_utilities.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub fn unstable_sorted<T: Ord>(iter: impl IntoIterator<Item = T>) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LeetCode` 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: `leet_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/data_structures.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_node` is never used
[INFO] [stdout]   --> src/test_utilities.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn find_node(root: &Option<Rc<RefCell<TreeNode>>>, val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `invert_tree` is never used
[INFO] [stdout]   --> src/test_utilities.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn invert_tree(root: Option<&RefCell<TreeNode>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_list` is never used
[INFO] [stdout]    --> src/test_utilities.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn iter_list(list: &Option<Box<ListNode>>) -> impl Iterator<Item = &i32> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_tree_pre_order` is never used
[INFO] [stdout]    --> src/test_utilities.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn iter_tree_pre_order(root: Option<Rc<RefCell<TreeNode>>>) -> impl Iterator<Item = i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_list` is never used
[INFO] [stdout]    --> src/test_utilities.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | pub fn make_list<I: IntoIterator<Item = i32>>(values: I) -> Option<Box<ListNode>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted_by` is never used
[INFO] [stdout]    --> src/test_utilities.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn unstable_sorted_by<T>(iter: impl IntoIterator<Item = T>, compare: impl FnMut(&T, &T) -> Ordering) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted_by_key` is never used
[INFO] [stdout]    --> src/test_utilities.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 | pub fn unstable_sorted_by_key<T, K: Ord>(iter: impl IntoIterator<Item = T>, f: impl FnMut(&T) -> K) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unstable_sorted` is never used
[INFO] [stdout]    --> src/test_utilities.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub fn unstable_sorted<T: Ord>(iter: impl IntoIterator<Item = T>) -> Vec<T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `LeetCode` 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: `leet_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "0c1f0f38930ef861eb30b24571e4ac2f295122c23bd9392330e3a7c503c304ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1f0f38930ef861eb30b24571e4ac2f295122c23bd9392330e3a7c503c304ce", kill_on_drop: false }`
[INFO] [stdout] 0c1f0f38930ef861eb30b24571e4ac2f295122c23bd9392330e3a7c503c304ce