[INFO] cloning repository https://github.com/quocbaodo205/rust_algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quocbaodo205/rust_algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquocbaodo205%2Frust_algo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquocbaodo205%2Frust_algo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7aeced93fb141bb2e91dce7477d5d12305c3639
[INFO] checking quocbaodo205/rust_algo against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquocbaodo205%2Frust_algo" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quocbaodo205/rust_algo on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/quocbaodo205/rust_algo
[INFO] finished tweaking git repo https://github.com/quocbaodo205/rust_algo
[INFO] tweaked toml for git repo https://github.com/quocbaodo205/rust_algo written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/quocbaodo205/rust_algo 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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14c6cc1c0d362def620ef52c5d477e37ca4e39e23f07f373616a94de3304340f
[INFO] running `Command { std: "docker" "start" "-a" "14c6cc1c0d362def620ef52c5d477e37ca4e39e23f07f373616a94de3304340f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c6cc1c0d362def620ef52c5d477e37ca4e39e23f07f373616a94de3304340f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c6cc1c0d362def620ef52c5d477e37ca4e39e23f07f373616a94de3304340f", kill_on_drop: false }`
[INFO] [stdout] 14c6cc1c0d362def620ef52c5d477e37ca4e39e23f07f373616a94de3304340f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb27f1f0ddf2024d1b0180dfd4ddecd7eb00f4ff6de80774d9c4dbfd6dcf94a5
[INFO] running `Command { std: "docker" "start" "-a" "eb27f1f0ddf2024d1b0180dfd4ddecd7eb00f4ff6de80774d9c4dbfd6dcf94a5", kill_on_drop: false }`
[INFO] [stderr]     Checking cp_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:1:71
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufReader, BufWriter, Stdin, StdoutLock, Write};
[INFO] [stdout]   |                                                                       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `isOn`
[INFO] [stdout]   --> src/utils.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 | macro_rules! isOn {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `turnOn`
[INFO] [stdout]   --> src/utils.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | macro_rules! turnOn {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:1:71
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, stdout, BufReader, BufWriter, Stdin, StdoutLock, Write};
[INFO] [stdout]   |                                                                       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:467:88
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<(UU)> {
[INFO] [stdout]     |                                                                                        ^  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 467 - pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<(UU)> {
[INFO] [stdout] 467 + pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<UU> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `isOn`
[INFO] [stdout]   --> src/utils.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 | macro_rules! isOn {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `turnOn`
[INFO] [stdout]   --> src/utils.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | macro_rules! turnOn {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/utils.rs:467:88
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<(UU)> {
[INFO] [stdout]     |                                                                                        ^  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 467 - pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<(UU)> {
[INFO] [stdout] 467 + pub fn read_edge_list(m: usize, line: &mut String, reader: &mut BufReader<Stdin>) -> V<UU> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/utils.rs:229:29
[INFO] [stdout]     |
[INFO] [stdout] 229 |     (start..=end).for_each(|i| {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/utils.rs:229:29
[INFO] [stdout]     |
[INFO] [stdout] 229 |     (start..=end).for_each(|i| {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out`
[INFO] [stdout]   --> src/main.rs:20:60
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn solve(reader: &mut BufReader<Stdin>, line: &mut String, out: &mut BufWriter<StdoutLock>) {
[INFO] [stdout]    |                                                            ^^^ help: if this is intentional, prefix it with an underscore: `_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out`
[INFO] [stdout]   --> src/main.rs:20:60
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn solve(reader: &mut BufReader<Stdin>, line: &mut String, out: &mut BufWriter<StdoutLock>) {
[INFO] [stdout]    |                                                            ^^^ help: if this is intentional, prefix it with an underscore: `_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VV` is never used
[INFO] [stdout]   --> src/main.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type VV<T> = Vec<Vec<T>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `US` is never used
[INFO] [stdout]   --> src/main.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type US = usize;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VV` is never used
[INFO] [stdout]    --> src/utils.rs:276:6
[INFO] [stdout]     |
[INFO] [stdout] 276 | type VV<T> = V<V<T>>;
[INFO] [stdout]     |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Set` is never used
[INFO] [stdout]    --> src/utils.rs:277:6
[INFO] [stdout]     |
[INFO] [stdout] 277 | type Set<T> = BTreeSet<T>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UUU` is never used
[INFO] [stdout]    --> src/utils.rs:281:6
[INFO] [stdout]     |
[INFO] [stdout] 281 | type UUU = (US, US, US);
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VV` is never used
[INFO] [stdout]   --> src/main.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type VV<T> = Vec<Vec<T>>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `US` is never used
[INFO] [stdout]   --> src/main.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type US = usize;
[INFO] [stdout]    |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VV` is never used
[INFO] [stdout]    --> src/utils.rs:276:6
[INFO] [stdout]     |
[INFO] [stdout] 276 | type VV<T> = V<V<T>>;
[INFO] [stdout]     |      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Set` is never used
[INFO] [stdout]    --> src/utils.rs:277:6
[INFO] [stdout]     |
[INFO] [stdout] 277 | type Set<T> = BTreeSet<T>;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UUU` is never used
[INFO] [stdout]    --> src/utils.rs:281:6
[INFO] [stdout]     |
[INFO] [stdout] 281 | type UUU = (US, US, US);
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "eb27f1f0ddf2024d1b0180dfd4ddecd7eb00f4ff6de80774d9c4dbfd6dcf94a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb27f1f0ddf2024d1b0180dfd4ddecd7eb00f4ff6de80774d9c4dbfd6dcf94a5", kill_on_drop: false }`
[INFO] [stdout] eb27f1f0ddf2024d1b0180dfd4ddecd7eb00f4ff6de80774d9c4dbfd6dcf94a5