[INFO] cloning repository https://github.com/adamchalmers/htree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adamchalmers/htree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamchalmers%2Fhtree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamchalmers%2Fhtree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3938b05c47d4aba33e78f4fb918cdf40673ea4c5
[INFO] checking adamchalmers/htree against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamchalmers%2Fhtree" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adamchalmers/htree on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adamchalmers/htree
[INFO] finished tweaking git repo https://github.com/adamchalmers/htree
[INFO] tweaked toml for git repo https://github.com/adamchalmers/htree written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/adamchalmers/htree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 377d1f6cc6f808f8781d9dabc63ecb1add44bc770a93a0c9fb4cf6adc5eb77ca
[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" "377d1f6cc6f808f8781d9dabc63ecb1add44bc770a93a0c9fb4cf6adc5eb77ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "377d1f6cc6f808f8781d9dabc63ecb1add44bc770a93a0c9fb4cf6adc5eb77ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "377d1f6cc6f808f8781d9dabc63ecb1add44bc770a93a0c9fb4cf6adc5eb77ca", kill_on_drop: false }`
[INFO] [stdout] 377d1f6cc6f808f8781d9dabc63ecb1add44bc770a93a0c9fb4cf6adc5eb77ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 034b2924b28617a166efddf74d939849d9e60f0e0285336d0a364c8d88650107
[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" "034b2924b28617a166efddf74d939849d9e60f0e0285336d0a364c8d88650107", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking htree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/fractals.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/fractals.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.65s
[INFO] running `Command { std: "docker" "inspect" "034b2924b28617a166efddf74d939849d9e60f0e0285336d0a364c8d88650107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "034b2924b28617a166efddf74d939849d9e60f0e0285336d0a364c8d88650107", kill_on_drop: false }`
[INFO] [stdout] 034b2924b28617a166efddf74d939849d9e60f0e0285336d0a364c8d88650107