[INFO] cloning repository https://github.com/ConfusedSky/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ConfusedSky/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfusedSky%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfusedSky%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a8575f5cb7379018e305aea428af1fe71d30e7e
[INFO] checking ConfusedSky/leetcode against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfusedSky%2Fleetcode" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ConfusedSky/leetcode
[INFO] finished tweaking git repo https://github.com/ConfusedSky/leetcode
[INFO] tweaked toml for git repo https://github.com/ConfusedSky/leetcode written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ConfusedSky/leetcode on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ConfusedSky/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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking ConfusedSky/leetcode against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfusedSky%2Fleetcode" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ConfusedSky/leetcode
[INFO] finished tweaking git repo https://github.com/ConfusedSky/leetcode
[INFO] tweaked toml for git repo https://github.com/ConfusedSky/leetcode written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ConfusedSky/leetcode on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ConfusedSky/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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "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-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1
[INFO] running `Command { std: "docker" "start" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]  --> src/_0001_two_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring` is never used
[INFO] [stdout]  --> src/_0003_longest_substring.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_median_sorted_arrays` is never used
[INFO] [stdout]  --> src/_0004_median_two_sorted.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn find_median_sorted_arrays(mut nums1: Vec<i32>, mut nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/_0005_longest_palindrome_substring.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_palindrome` is never used
[INFO] [stdout]  --> src/_0005_longest_palindrome_substring.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn longest_palindrome(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/_0007_reverse_integer.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(mut x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]  --> src/_0009_palindrome_number.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PatternAtom` is never used
[INFO] [stdout]  --> src/_0010_regular_expresssion_matching.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum PatternAtom {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pattern` is never constructed
[INFO] [stdout]   --> src/_0010_regular_expresssion_matching.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Pattern {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `match_next`, and `match_pattern` are never used
[INFO] [stdout]   --> src/_0010_regular_expresssion_matching.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Pattern {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 16 |     pub fn new(p: String) -> Pattern {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn match_next(&self, s: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn match_pattern(&self, s: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_match` is never used
[INFO] [stdout]   --> src/_0010_regular_expresssion_matching.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeIndex` is never used
[INFO] [stdout]  --> src/_0010_regular_expresssion_matchingv2.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type NodeIndex = usize;
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]  --> src/_0010_regular_expresssion_matchingv2.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Edge {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/_0010_regular_expresssion_matchingv2.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pattern` is never constructed
[INFO] [stdout]   --> src/_0010_regular_expresssion_matchingv2.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Pattern {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `match_pattern` are never used
[INFO] [stdout]   --> src/_0010_regular_expresssion_matchingv2.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Pattern {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 25 |     pub fn new(p: String) -> Pattern {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     pub fn match_pattern(&self, s: &str) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_match` is never used
[INFO] [stdout]    --> src/_0010_regular_expresssion_matchingv2.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn is_match(s: String, p: String) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1", kill_on_drop: false }`
[INFO] [stdout] efc1947f5f0754ccbec8593ab9c36bbb917a87cec32f2bd96edc1b2ffc6081d1
