[INFO] cloning repository https://github.com/kamilrybacki/RustyLeetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kamilrybacki/RustyLeetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilrybacki%2FRustyLeetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilrybacki%2FRustyLeetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb2c18a6361523981de965e2b5cde9b2a967bb9a
[INFO] testing kamilrybacki/RustyLeetcode against master#9e297bf54d31eb3b30067208ff9af4416945a2ed for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilrybacki%2FRustyLeetcode" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamilrybacki/RustyLeetcode on toolchain 9e297bf54d31eb3b30067208ff9af4416945a2ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kamilrybacki/RustyLeetcode
[INFO] finished tweaking git repo https://github.com/kamilrybacki/RustyLeetcode
[INFO] tweaked toml for git repo https://github.com/kamilrybacki/RustyLeetcode written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kamilrybacki/RustyLeetcode 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" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing kamilrybacki/RustyLeetcode against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilrybacki%2FRustyLeetcode" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamilrybacki/RustyLeetcode on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kamilrybacki/RustyLeetcode
[INFO] finished tweaking git repo https://github.com/kamilrybacki/RustyLeetcode
[INFO] tweaked toml for git repo https://github.com/kamilrybacki/RustyLeetcode written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kamilrybacki/RustyLeetcode 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" "+61a9ac64344e91d62f5496627ff363d177f9daab" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f2526b8f6d8879e8bc0dd29f6270885d75c05f44b22da35309c15ff79ce67de
[INFO] running `Command { std: "docker" "start" "-a" "4f2526b8f6d8879e8bc0dd29f6270885d75c05f44b22da35309c15ff79ce67de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f2526b8f6d8879e8bc0dd29f6270885d75c05f44b22da35309c15ff79ce67de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f2526b8f6d8879e8bc0dd29f6270885d75c05f44b22da35309c15ff79ce67de", kill_on_drop: false }`
[INFO] [stdout] 4f2526b8f6d8879e8bc0dd29f6270885d75c05f44b22da35309c15ff79ce67de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 122f6db5bae169bf16dde67c27876088a2083cc0a74c3c7f85ee50c1b42c65b3
[INFO] running `Command { std: "docker" "start" "-a" "122f6db5bae169bf16dde67c27876088a2083cc0a74c3c7f85ee50c1b42c65b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/1.two-sum.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/100.same-tree.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/100.same-tree.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |         p: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                              ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/100.same-tree.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 |         q: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                              ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/100.same-tree.rs:34:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |             node_1: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                       ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 33 |         fn compare_nodes<TreeNode>(
[INFO] [stdout]    |                         ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/100.same-tree.rs:35:39
[INFO] [stdout]    |
[INFO] [stdout] 35 |             node_2: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                       ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 33 |         fn compare_nodes<TreeNode>(
[INFO] [stdout]    |                         ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/101.symmetric-tree.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/101.symmetric-tree.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn is_symmetric(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |                                                 ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/101.symmetric-tree.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 |             branch_1: &Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                          ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn check_branch<TreeNode>(
[INFO] [stdout]    |                        ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/101.symmetric-tree.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 |             branch_2: &Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                          ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn check_branch<TreeNode>(
[INFO] [stdout]    |                        ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/104.maximum-depth-of-binary-tree.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/104.maximum-depth-of-binary-tree.rs:29:46
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn max_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |                                              ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/104.maximum-depth-of-binary-tree.rs:30:50
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn branch_depth(node: &Option<Rc<RefCell<TreeNode>>>, current_level: i32) -> Vec<i32> {
[INFO] [stdout]    |                                                  ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn branch_depth<TreeNode>(node: &Option<Rc<RefCell<TreeNode>>>, current_level: i32) -> Vec<i32> {
[INFO] [stdout]    |                        ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/108.convert-sorted-array-to-binary-search-tree.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/108.convert-sorted-array-to-binary-search-tree.rs:29:69
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn sorted_array_to_bst(nums: Vec<i32>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |                                                                     ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/108.convert-sorted-array-to-binary-search-tree.rs:30:61
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn branch_out(vals: &Vec<i32>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |                                                             ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn branch_out<TreeNode>(vals: &Vec<i32>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |                      ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/110.balanced-binary-tree.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/110.balanced-binary-tree.rs:29:48
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn is_balanced(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |                                                ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/110.balanced-binary-tree.rs:30:51
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn measure_branch(node: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |                                                   ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn measure_branch<TreeNode>(node: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |                          ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/111.minimum-depth-of-binary-tree.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/111.minimum-depth-of-binary-tree.rs:31:46
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn min_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |                                              ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/111.minimum-depth-of-binary-tree.rs:32:55
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fn branch_min_depth(branch: Option<Rc<RefCell<TreeNode>>>, shift: i32) -> i32 {
[INFO] [stdout]    |                                                       ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fn branch_min_depth<TreeNode>(branch: Option<Rc<RefCell<TreeNode>>>, shift: i32) -> i32 {
[INFO] [stdout]    |                            ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/112.path-sum.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/112.path-sum.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn has_path_sum(root: Option<Rc<RefCell<TreeNode>>>, target_sum: i32) -> bool {
[INFO] [stdout]    |                                                 ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/112.path-sum.rs:30:47
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn search_sum(node: Option<Rc<RefCell<TreeNode>>>, target: i32, sum: i32) -> bool {
[INFO] [stdout]    |                                               ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn search_sum<TreeNode>(node: Option<Rc<RefCell<TreeNode>>>, target: i32, sum: i32) -> bool {
[INFO] [stdout]    |                      ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/118.pascals-triangle.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/119.pascals-triangle-ii.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/121.best-time-to-buy-and-sell-stock.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/125.valid-palindrome.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/13.roman-to-integer.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/136.single-number.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/14.longest-common-prefix.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/144.binary-tree-preorder-traversal.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/144.binary-tree-preorder-traversal.rs:29:55
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn preorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                                                       ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/144.binary-tree-preorder-traversal.rs:30:52
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn traverse_branch(node: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                                                    ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn traverse_branch<TreeNode>(node: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                           ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/145.binary-tree-postorder-traversal.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/145.binary-tree-postorder-traversal.rs:29:56
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn postorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                                                        ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/145.binary-tree-postorder-traversal.rs:30:52
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn traverse_branch(node: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                                                    ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 |         fn traverse_branch<TreeNode>(node: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                           ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/168.excel-sheet-column-title.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/20.valid-parentheses.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/21.merge-two-sorted-lists.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/21.merge-two-sorted-lists.rs:29:31
[INFO] [stdout]    |
[INFO] [stdout] 29 |         mut list1: Option<Box<ListNode>>,
[INFO] [stdout]    |                               ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/21.merge-two-sorted-lists.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 30 |         mut list2: Option<Box<ListNode>>,
[INFO] [stdout]    |                               ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/21.merge-two-sorted-lists.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |     ) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                     ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/21.merge-two-sorted-lists.rs:32:40
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut result: Vec<Option<Box<ListNode>>> = Vec::new();
[INFO] [stdout]    |                                        ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/26.remove-duplicates-from-sorted-array.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/27.remove-element.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/35.search-insert-position.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/58.length-of-last-word.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/66.plus-one.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/67.add-binary.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/69.sqrt-x.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/70.climbing-stairs.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/83.remove-duplicates-from-sorted-list.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/83.remove-duplicates-from-sorted-list.rs:27:51
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn delete_duplicates(mut head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                                                   ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ListNode` in this scope
[INFO] [stdout]   --> src/easy/83.remove-duplicates-from-sorted-list.rs:27:77
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn delete_duplicates(mut head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                                                                             ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<ListNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/88.merge-sorted-array.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]  --> src/easy/9.palindrome-number.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Solution` in this scope
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    |      ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:31:54
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn inorder_traversal(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<i32> {
[INFO] [stdout]    |                                                      ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<TreeNode> Solution {
[INFO] [stdout]    |     ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:33:37
[INFO] [stdout]    |
[INFO] [stdout] 33 |             node: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                     ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fn traverse<TreeNode>(
[INFO] [stdout]    |                    ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `TreeNode` in this scope
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:34:44
[INFO] [stdout]    |
[INFO] [stdout] 34 |             last_parent: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout]    |                                            ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fn traverse<TreeNode>(
[INFO] [stdout]    |                    ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow`
[INFO] [stdout]  --> src/easy/111.minimum-depth-of-binary-tree.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/easy/83.remove-duplicates-from-sorted-list.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/easy/94.binary-tree-inorder-traversal.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TreeNode`
[INFO] [stdout]   --> src/easy/108.convert-sorted-array-to-binary-search-tree.rs:38:28
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mut root = TreeNode::new(vals[middle_index]);
[INFO] [stdout]    |                            ^^^^^^^^ use of undeclared type `TreeNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ListNode`
[INFO] [stdout]   --> src/easy/83.remove-duplicates-from-sorted-list.rs:37:41
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let mut new_node = Box::new(ListNode::new(*value));
[INFO] [stdout]    |                                         ^^^^^^^^ use of undeclared type `ListNode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/easy/111.minimum-depth-of-binary-tree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/easy/125.valid-palindrome.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut characters: Vec<char> = s.chars().collect();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/easy/13.roman-to-integer.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for mut index in 0..s.len() {
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/easy/26.remove-duplicates-from-sorted-array.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |             .for_each(|(index, number)| {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `root` is never read
[INFO] [stdout]   --> src/easy/69.sqrt-x.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut root: f64 = 0.0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 64 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode` (bin "leetcode") due to 65 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "122f6db5bae169bf16dde67c27876088a2083cc0a74c3c7f85ee50c1b42c65b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "122f6db5bae169bf16dde67c27876088a2083cc0a74c3c7f85ee50c1b42c65b3", kill_on_drop: false }`
[INFO] [stdout] 122f6db5bae169bf16dde67c27876088a2083cc0a74c3c7f85ee50c1b42c65b3