[INFO] cloning repository https://github.com/tolumide-ng/coding-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tolumide-ng/coding-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c4f9248ae6763462b0d2dd216f35daf0ea426d2
[INFO] checking tolumide-ng/coding-challenge against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge" "/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/tolumide-ng/coding-challenge on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] finished tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] tweaked toml for git repo https://github.com/tolumide-ng/coding-challenge written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tolumide-ng/coding-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7365b23904d2360303ca2893b4c32a71c525b3498454dd9be745b60ce3950550
[INFO] running `Command { std: "docker" "start" "-a" "7365b23904d2360303ca2893b4c32a71c525b3498454dd9be745b60ce3950550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7365b23904d2360303ca2893b4c32a71c525b3498454dd9be745b60ce3950550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7365b23904d2360303ca2893b4c32a71c525b3498454dd9be745b60ce3950550", kill_on_drop: false }`
[INFO] [stdout] 7365b23904d2360303ca2893b4c32a71c525b3498454dd9be745b60ce3950550
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb2f569a2e22fc2d6b7975b2a21b57c34648e5e66cab9b092d1af2f60ce3f105
[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" "eb2f569a2e22fc2d6b7975b2a21b57c34648e5e66cab9b092d1af2f60ce3f105", kill_on_drop: false }`
[INFO] [stderr]     Checking data_structures v0.1.0 (/opt/rustwide/workdir/data_structures)
[INFO] [stderr]     Checking dynamic_pg v0.1.0 (/opt/rustwide/workdir/dynamic_pg)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/recursion/search_2d_matrix.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut all_points: Vec<Position> = vec![
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking others v0.1.0 (/opt/rustwide/workdir/others)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/recursion/search_2d_matrix.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut all_points: Vec<Position> = vec![
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/recursion/search_2d_matrix.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut all_points: Vec<Position> = vec![
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/recursion/search_2d_matrix.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut all_points: Vec<Position> = vec![
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.59s
[INFO] running `Command { std: "docker" "inspect" "eb2f569a2e22fc2d6b7975b2a21b57c34648e5e66cab9b092d1af2f60ce3f105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2f569a2e22fc2d6b7975b2a21b57c34648e5e66cab9b092d1af2f60ce3f105", kill_on_drop: false }`
[INFO] [stdout] eb2f569a2e22fc2d6b7975b2a21b57c34648e5e66cab9b092d1af2f60ce3f105