[INFO] cloning repository https://github.com/kennerleyb/Rust-Mandlebrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kennerleyb/Rust-Mandlebrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkennerleyb%2FRust-Mandlebrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkennerleyb%2FRust-Mandlebrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a58a1205306c7555a0811ab643bbe49044d3ddc1
[INFO] checking kennerleyb/Rust-Mandlebrot against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkennerleyb%2FRust-Mandlebrot" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kennerleyb/Rust-Mandlebrot on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kennerleyb/Rust-Mandlebrot
[INFO] finished tweaking git repo https://github.com/kennerleyb/Rust-Mandlebrot
[INFO] tweaked toml for git repo https://github.com/kennerleyb/Rust-Mandlebrot written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/kennerleyb/Rust-Mandlebrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e46ea6f65bf327d6712b4e9fb7ac548cadfed38e47cfd178bb18a0c8d916199d
[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" "e46ea6f65bf327d6712b4e9fb7ac548cadfed38e47cfd178bb18a0c8d916199d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e46ea6f65bf327d6712b4e9fb7ac548cadfed38e47cfd178bb18a0c8d916199d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46ea6f65bf327d6712b4e9fb7ac548cadfed38e47cfd178bb18a0c8d916199d", kill_on_drop: false }`
[INFO] [stdout] e46ea6f65bf327d6712b4e9fb7ac548cadfed38e47cfd178bb18a0c8d916199d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 112a0f6fe448b390f7e412843ce8607e5b22333135ebfd526b763785ea72f76a
[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" "112a0f6fe448b390f7e412843ce8607e5b22333135ebfd526b763785ea72f76a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking adler32 v1.0.0
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking deflate v0.7.11
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking num-bigint v0.1.39
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking rayon v0.8.1
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking rust-mandlebrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.10s
[INFO] running `Command { std: "docker" "inspect" "112a0f6fe448b390f7e412843ce8607e5b22333135ebfd526b763785ea72f76a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112a0f6fe448b390f7e412843ce8607e5b22333135ebfd526b763785ea72f76a", kill_on_drop: false }`
[INFO] [stdout] 112a0f6fe448b390f7e412843ce8607e5b22333135ebfd526b763785ea72f76a