[INFO] cloning repository https://github.com/luatnd/rust-dsa-boilerplate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luatnd/rust-dsa-boilerplate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluatnd%2Frust-dsa-boilerplate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluatnd%2Frust-dsa-boilerplate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54e927dd8557ad78be13d195c592ab587619cb3b
[INFO] checking luatnd/rust-dsa-boilerplate against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluatnd%2Frust-dsa-boilerplate" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luatnd/rust-dsa-boilerplate
[INFO] finished tweaking git repo https://github.com/luatnd/rust-dsa-boilerplate
[INFO] tweaked toml for git repo https://github.com/luatnd/rust-dsa-boilerplate written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luatnd/rust-dsa-boilerplate on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luatnd/rust-dsa-boilerplate 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54d0c86a6dc56ec47981f006972b54185ba269aa2ebca8a10d490039ba267a85
[INFO] running `Command { std: "docker" "start" "-a" "54d0c86a6dc56ec47981f006972b54185ba269aa2ebca8a10d490039ba267a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54d0c86a6dc56ec47981f006972b54185ba269aa2ebca8a10d490039ba267a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54d0c86a6dc56ec47981f006972b54185ba269aa2ebca8a10d490039ba267a85", kill_on_drop: false }`
[INFO] [stdout] 54d0c86a6dc56ec47981f006972b54185ba269aa2ebca8a10d490039ba267a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52d9cfb060caa2acf9c3ad061eb2f7c319ec6ea87e44272bee6ebb5c6d2a23de
[INFO] running `Command { std: "docker" "start" "-a" "52d9cfb060caa2acf9c3ad061eb2f7c319ec6ea87e44272bee6ebb5c6d2a23de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dsa-rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/other/playground.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 |   use super::*;
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l1`
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     l1: Option<Box<ListNode>>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_l1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l2`
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     l2: Option<Box<ListNode>>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_l2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traverse_linked_list` is never used
[INFO] [stdout]   --> src/util/linked_list.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn traverse_linked_list(head: &ListNode3Ref) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l1`
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     l1: Option<Box<ListNode>>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_l1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l2`
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     l2: Option<Box<ListNode>>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_l2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traverse_linked_list` is never used
[INFO] [stdout]   --> src/util/linked_list.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn traverse_linked_list(head: &ListNode3Ref) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/leetcode/l0001_two_sum.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/leetcode/l0001_two_sum.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 24 |   pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `add_two_numbers` and `add_two_numbers_naive` are never used
[INFO] [stdout]   --> src/leetcode/l0002_add_two_numbers.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 26 |   pub fn add_two_numbers(
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |   pub fn add_two_numbers_naive(
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/other/this_is_template.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `sum` and `sum_naive` are never used
[INFO] [stdout]   --> src/other/this_is_template.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 10 |   pub fn sum(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |   pub fn sum_naive(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `test` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `test` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "52d9cfb060caa2acf9c3ad061eb2f7c319ec6ea87e44272bee6ebb5c6d2a23de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d9cfb060caa2acf9c3ad061eb2f7c319ec6ea87e44272bee6ebb5c6d2a23de", kill_on_drop: false }`
[INFO] [stdout] 52d9cfb060caa2acf9c3ad061eb2f7c319ec6ea87e44272bee6ebb5c6d2a23de
