[INFO] cloning repository https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumm-csci-3403-fall-2020%2Fsorting-in-rust-jonah-andy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumm-csci-3403-fall-2020%2Fsorting-in-rust-jonah-andy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e6d70e0efbe587d5a6d530dd202fcc33b957e66
[INFO] checking umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumm-csci-3403-fall-2020%2Fsorting-in-rust-jonah-andy" "/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/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy
[INFO] finished tweaking git repo https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy
[INFO] tweaked toml for git repo https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/umm-csci-3403-fall-2020/sorting-in-rust-jonah-andy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 510fedce6a4909e0ace37472574a632d7c058aced5bcaa6d16b78719901de272
[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" "510fedce6a4909e0ace37472574a632d7c058aced5bcaa6d16b78719901de272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "510fedce6a4909e0ace37472574a632d7c058aced5bcaa6d16b78719901de272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510fedce6a4909e0ace37472574a632d7c058aced5bcaa6d16b78719901de272", kill_on_drop: false }`
[INFO] [stdout] 510fedce6a4909e0ace37472574a632d7c058aced5bcaa6d16b78719901de272
[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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c7e173f0b98c1048edfe9158cdb993e036ccb9d6887de1d7f0b86ac29c1a26b
[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" "2c7e173f0b98c1048edfe9158cdb993e036ccb9d6887de1d7f0b86ac29c1a26b", kill_on_drop: false }`
[INFO] [stderr]     Checking sorting-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ys`
[INFO] [stdout]    --> src/main.rs:145:75
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn merge<T: PartialOrd + std::marker::Copy + std::fmt::Debug>(xs: Vec<T>, ys: Vec<T>) -> Vec<T> {
[INFO] [stdout]     |                                                                           ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ys`
[INFO] [stdout]    --> src/main.rs:145:75
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn merge<T: PartialOrd + std::marker::Copy + std::fmt::Debug>(xs: Vec<T>, ys: Vec<T>) -> Vec<T> {
[INFO] [stdout]     |                                                                           ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` 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 0.38s
[INFO] running `Command { std: "docker" "inspect" "2c7e173f0b98c1048edfe9158cdb993e036ccb9d6887de1d7f0b86ac29c1a26b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7e173f0b98c1048edfe9158cdb993e036ccb9d6887de1d7f0b86ac29c1a26b", kill_on_drop: false }`
[INFO] [stdout] 2c7e173f0b98c1048edfe9158cdb993e036ccb9d6887de1d7f0b86ac29c1a26b