[INFO] cloning repository https://github.com/tweedegolf/hashcode2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tweedegolf/hashcode2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweedegolf%2Fhashcode2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweedegolf%2Fhashcode2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ced22fcb20c61fb2b3f7f863402f13b6666c404c
[INFO] checking tweedegolf/hashcode2021 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweedegolf%2Fhashcode2021" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tweedegolf/hashcode2021 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tweedegolf/hashcode2021
[INFO] finished tweaking git repo https://github.com/tweedegolf/hashcode2021
[INFO] tweaked toml for git repo https://github.com/tweedegolf/hashcode2021 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tweedegolf/hashcode2021 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1dc9a1df3357d0ed28bb3ee837c273a1bad6becb898b856adf6cb86cd7cd505e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1dc9a1df3357d0ed28bb3ee837c273a1bad6becb898b856adf6cb86cd7cd505e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dc9a1df3357d0ed28bb3ee837c273a1bad6becb898b856adf6cb86cd7cd505e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dc9a1df3357d0ed28bb3ee837c273a1bad6becb898b856adf6cb86cd7cd505e", kill_on_drop: false }`
[INFO] [stdout] 1dc9a1df3357d0ed28bb3ee837c273a1bad6becb898b856adf6cb86cd7cd505e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c9d1a3ad887dc01d4213c328c024d4a4c161b6286579429f570fe446a357c13
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c9d1a3ad887dc01d4213c328c024d4a4c161b6286579429f570fe446a357c13", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking hashcode2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `LightPeriod`, `read_problem`
[INFO] [stdout]  --> src/write_solution.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{read_problem, Problem, Solution, LightPeriod};
[INFO] [stdout]   |             ^^^^^^^^^^^^                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/street_count.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::IteratorRandom`
[INFO] [stdout]  --> src/street_count.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::seq::IteratorRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/street_count.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/street_count.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/street_count.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::IteratorRandom`
[INFO] [stdout]  --> src/street_count.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::seq::IteratorRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/street_count.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/street_count.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]  --> src/street_count.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut rng = rand::thread_rng();
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/street_count.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut rng = rand::thread_rng();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/baseline.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/ignore_unused.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `score`
[INFO] [stdout]  --> src/score.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn score(problem: &crate::Problem, solution: &crate::Solution) -> usize {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_active_street`
[INFO] [stdout]   --> src/score.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn get_active_street(schedule: &Vec<crate::LightPeriod>, current_time: usize) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `step`
[INFO] [stdout]   --> src/score.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn step(problem: &crate::Problem, solution: &crate::Solution, current_time: usize, queue: &mut Vec<RefCell<VecDeque<(usize, usize)>>>...
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/random.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]  --> src/street_count.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut rng = rand::thread_rng();
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/street_count.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut rng = rand::thread_rng();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/baseline.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/ignore_unused.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `score`
[INFO] [stdout]  --> src/score.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn score(problem: &crate::Problem, solution: &crate::Solution) -> usize {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_active_street`
[INFO] [stdout]   --> src/score.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn get_active_street(schedule: &Vec<crate::LightPeriod>, current_time: usize) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `step`
[INFO] [stdout]   --> src/score.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn step(problem: &crate::Problem, solution: &crate::Solution, current_time: usize, queue: &mut Vec<RefCell<VecDeque<(usize, usize)>>>...
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]  --> src/random.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn solve(problem: &Problem) -> Solution {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.05s
[INFO] running `Command { std: "docker" "inspect" "6c9d1a3ad887dc01d4213c328c024d4a4c161b6286579429f570fe446a357c13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9d1a3ad887dc01d4213c328c024d4a4c161b6286579429f570fe446a357c13", kill_on_drop: false }`
[INFO] [stdout] 6c9d1a3ad887dc01d4213c328c024d4a4c161b6286579429f570fe446a357c13