[INFO] cloning repository https://github.com/gabribribribri/leetcode_challenges
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gabribribribri/leetcode_challenges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabribribribri%2Fleetcode_challenges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabribribribri%2Fleetcode_challenges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5451a6a2db65a481870f6df166fdedb1b87f8f7
[INFO] checking gabribribribri/leetcode_challenges against master#e43d139a82620a268d3828a73e12a8679339e8f8 for pr-143545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabribribribri%2Fleetcode_challenges" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gabribribribri/leetcode_challenges
[INFO] finished tweaking git repo https://github.com/gabribribribri/leetcode_challenges
[INFO] tweaked toml for git repo https://github.com/gabribribribri/leetcode_challenges written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gabribribribri/leetcode_challenges on toolchain e43d139a82620a268d3828a73e12a8679339e8f8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e43d139a82620a268d3828a73e12a8679339e8f8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gabribribribri/leetcode_challenges 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" "+e43d139a82620a268d3828a73e12a8679339e8f8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+e43d139a82620a268d3828a73e12a8679339e8f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f61b569aef1ed2790f69fda0f0afd042dfcf6a6886dfd24eb337d529cdb7ef9b
[INFO] running `Command { std: "docker" "start" "-a" "f61b569aef1ed2790f69fda0f0afd042dfcf6a6886dfd24eb337d529cdb7ef9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f61b569aef1ed2790f69fda0f0afd042dfcf6a6886dfd24eb337d529cdb7ef9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f61b569aef1ed2790f69fda0f0afd042dfcf6a6886dfd24eb337d529cdb7ef9b", kill_on_drop: false }`
[INFO] [stdout] f61b569aef1ed2790f69fda0f0afd042dfcf6a6886dfd24eb337d529cdb7ef9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+e43d139a82620a268d3828a73e12a8679339e8f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fcdc0d2bf96fa359a0c67883f2204e4994369370fc1b240c2136906b8b0bd2c
[INFO] running `Command { std: "docker" "start" "-a" "5fcdc0d2bf96fa359a0c67883f2204e4994369370fc1b240c2136906b8b0bd2c", kill_on_drop: false }`
[INFO] [stderr]     Checking string-to-integer v0.1.0 (/opt/rustwide/workdir/string-to-integer)
[INFO] [stderr]     Checking the-score-of-students-solving-math-expression v0.1.0 (/opt/rustwide/workdir/the-score-of-students-solving-math-expression)
[INFO] [stderr]     Checking longest-common-prefix v0.1.0 (/opt/rustwide/workdir/longest-common-prefix)
[INFO] [stderr]     Checking container-with-most-water v0.1.0 (/opt/rustwide/workdir/container-with-most-water)
[INFO] [stderr]     Checking multiply-strings v0.1.0 (/opt/rustwide/workdir/multiply-strings)
[INFO] [stderr]     Checking three-sum v0.1.0 (/opt/rustwide/workdir/three-sum)
[INFO] [stderr]     Checking regular-expression-matching v0.1.0 (/opt/rustwide/workdir/regular-expression-matching)
[INFO] [stderr]     Checking integer-to-roman v0.1.0 (/opt/rustwide/workdir/integer-to-roman)
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> string-to-integer/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `my_atoi` is never used
[INFO] [stdout]   --> string-to-integer/src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn my_atoi(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> multiply-strings/src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `multiply` is never used
[INFO] [stdout]   --> multiply-strings/src/main.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 76 |     pub fn multiply(num1: String, num2: String) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]   --> multiply-strings/src/main.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn reverse(s: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiply_by_digit` is never used
[INFO] [stdout]   --> multiply-strings/src/main.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn multiply_by_digit(b: &str, p: char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> multiply-strings/src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn add(v: Vec<String>) -> String {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `u32_to_char` is never used
[INFO] [stdout]    --> multiply-strings/src/main.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn u32_to_char(n: u32) -> char {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiply_by_factor_10` is never used
[INFO] [stdout]    --> multiply-strings/src/main.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 | fn multiply_by_factor_10(s: String, fac: usize) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_trailing_zeros` is never used
[INFO] [stdout]    --> multiply-strings/src/main.rs:143:4
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn remove_trailing_zeros(mut s: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "5fcdc0d2bf96fa359a0c67883f2204e4994369370fc1b240c2136906b8b0bd2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fcdc0d2bf96fa359a0c67883f2204e4994369370fc1b240c2136906b8b0bd2c", kill_on_drop: false }`
[INFO] [stdout] 5fcdc0d2bf96fa359a0c67883f2204e4994369370fc1b240c2136906b8b0bd2c