[INFO] cloning repository https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKINGSGAMBIT12%2FBLOCKCHAIN2.1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKINGSGAMBIT12%2FBLOCKCHAIN2.1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae7ea2830c36052a404eb9f14033f29cea225034
[INFO] checking KINGSGAMBIT12/BLOCKCHAIN2.1 against try#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKINGSGAMBIT12%2FBLOCKCHAIN2.1" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1
[INFO] finished tweaking git repo https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1
[INFO] tweaked toml for git repo https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1 on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/KINGSGAMBIT12/BLOCKCHAIN2.1 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" "+63132bd615c9bf75e93af8405d00064212331708" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf76f49de4b247523e525d4a19a8f028a2b09a3483c700d8b8c2a306de04d8d4
[INFO] running `Command { std: "docker" "start" "-a" "bf76f49de4b247523e525d4a19a8f028a2b09a3483c700d8b8c2a306de04d8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf76f49de4b247523e525d4a19a8f028a2b09a3483c700d8b8c2a306de04d8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf76f49de4b247523e525d4a19a8f028a2b09a3483c700d8b8c2a306de04d8d4", kill_on_drop: false }`
[INFO] [stdout] bf76f49de4b247523e525d4a19a8f028a2b09a3483c700d8b8c2a306de04d8d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+63132bd615c9bf75e93af8405d00064212331708" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bea0f16661a03cf60af9de8d7b76d50dd21fe2d72831413455b10639e2d1b823
[INFO] running `Command { std: "docker" "start" "-a" "bea0f16661a03cf60af9de8d7b76d50dd21fe2d72831413455b10639e2d1b823", kill_on_drop: false }`
[INFO] [stderr]     Checking sorting_library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sortable`
[INFO] [stdout]  --> src/main.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sorting_library::{Sortable, quick_sort, selection_sort, insertion_sort, merge_sort};
[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 import: `Sortable`
[INFO] [stdout]  --> src/main.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sorting_library::{Sortable, quick_sort, selection_sort, insertion_sort, merge_sort};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "bea0f16661a03cf60af9de8d7b76d50dd21fe2d72831413455b10639e2d1b823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bea0f16661a03cf60af9de8d7b76d50dd21fe2d72831413455b10639e2d1b823", kill_on_drop: false }`
[INFO] [stdout] bea0f16661a03cf60af9de8d7b76d50dd21fe2d72831413455b10639e2d1b823