[INFO] cloning repository https://github.com/chakmidlot/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/chakmidlot/LeetCode_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchakmidlot%2FLeetCode_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchakmidlot%2FLeetCode_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77509ac9854e96763a2f3287dea5d0302044bfc0
[INFO] checking chakmidlot/LeetCode_rust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchakmidlot%2FLeetCode_rust" "/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/chakmidlot/LeetCode_rust on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chakmidlot/LeetCode_rust
[INFO] finished tweaking git repo https://github.com/chakmidlot/LeetCode_rust
[INFO] tweaked toml for git repo https://github.com/chakmidlot/LeetCode_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/chakmidlot/LeetCode_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e58b6c3218a56929ebe1dad459138c91a70a17ee3a5065122036d7963dec1522
[INFO] running `Command { std: "docker" "start" "-a" "e58b6c3218a56929ebe1dad459138c91a70a17ee3a5065122036d7963dec1522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e58b6c3218a56929ebe1dad459138c91a70a17ee3a5065122036d7963dec1522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58b6c3218a56929ebe1dad459138c91a70a17ee3a5065122036d7963dec1522", kill_on_drop: false }`
[INFO] [stdout] e58b6c3218a56929ebe1dad459138c91a70a17ee3a5065122036d7963dec1522
[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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 336b1192b15fffce98ee8fc4fa82542a08497e7860a5fa1bacd8b16e01e89675
[INFO] running `Command { std: "docker" "start" "-a" "336b1192b15fffce98ee8fc4fa82542a08497e7860a5fa1bacd8b16e01e89675", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking leet_rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/task_37.rs (1 fix)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Instant`
[INFO] [stdout]   --> src/task_37.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let start = Instant::now();
[INFO] [stdout]    |                 ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::time::Instant;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/task_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `two_sum`
[INFO] [stdout]  --> src/task_1.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/task_9.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]  --> src/task_9.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/task_23.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 |   fn new(val: i32) -> Self {
[INFO] [stdout]   |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/task_23.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `merge_k_lists`
[INFO] [stdout]   --> src/task_23.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_linked_list`
[INFO] [stdout]   --> src/task_23.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn make_linked_list(input: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Solution`
[INFO] [stdout]  --> src/task_37.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Solution {}
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve_sudoku`
[INFO] [stdout]  --> src/task_37.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn solve_sudoku(board: &mut Vec<Vec<char>>) {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid`
[INFO] [stdout]   --> src/task_37.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn is_valid(board: &Vec<Vec<char>>, x: usize, y: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/task_50.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `my_pow`
[INFO] [stdout]  --> src/task_50.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn my_pow(x: f64, n: i32) -> f64 {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/task_226.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/task_226.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Solution {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `invert_tree`
[INFO] [stdout]   --> src/task_226.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn invert_tree(root: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]  --> src/task_385.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Int(i32),
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `List`
[INFO] [stdout]  --> src/task_385.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   List(Vec<NestedInteger>)
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/task_385.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize`
[INFO] [stdout]   --> src/task_385.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn deserialize(s: String) -> NestedInteger {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leet_rust` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "336b1192b15fffce98ee8fc4fa82542a08497e7860a5fa1bacd8b16e01e89675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "336b1192b15fffce98ee8fc4fa82542a08497e7860a5fa1bacd8b16e01e89675", kill_on_drop: false }`
[INFO] [stdout] 336b1192b15fffce98ee8fc4fa82542a08497e7860a5fa1bacd8b16e01e89675