[INFO] cloning repository https://github.com/raimon49/rust-parallel-mandelbrot-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raimon49/rust-parallel-mandelbrot-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraimon49%2Frust-parallel-mandelbrot-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraimon49%2Frust-parallel-mandelbrot-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e3bc5ad0c4b08166deddf4f4b6557b45f6b5d89
[INFO] checking raimon49/rust-parallel-mandelbrot-study against master#00bfd6b2734d9c28a147bf237490995731781fdd for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraimon49%2Frust-parallel-mandelbrot-study" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raimon49/rust-parallel-mandelbrot-study on toolchain 00bfd6b2734d9c28a147bf237490995731781fdd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raimon49/rust-parallel-mandelbrot-study
[INFO] finished tweaking git repo https://github.com/raimon49/rust-parallel-mandelbrot-study
[INFO] tweaked toml for git repo https://github.com/raimon49/rust-parallel-mandelbrot-study written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/raimon49/rust-parallel-mandelbrot-study 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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c191004e35355a2de9bbb44dd3d0ba8455f668fa0238c65baf9681d87e56d6bf
[INFO] running `Command { std: "docker" "start" "-a" "c191004e35355a2de9bbb44dd3d0ba8455f668fa0238c65baf9681d87e56d6bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c191004e35355a2de9bbb44dd3d0ba8455f668fa0238c65baf9681d87e56d6bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c191004e35355a2de9bbb44dd3d0ba8455f668fa0238c65baf9681d87e56d6bf", kill_on_drop: false }`
[INFO] [stdout] c191004e35355a2de9bbb44dd3d0ba8455f668fa0238c65baf9681d87e56d6bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a51b47932adf1d5478945f913169569f5b23e3e09529ab3e55e11bb4bc60e51b
[INFO] running `Command { std: "docker" "start" "-a" "a51b47932adf1d5478945f913169569f5b23e3e09529ab3e55e11bb4bc60e51b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a51b47932adf1d5478945f913169569f5b23e3e09529ab3e55e11bb4bc60e51b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a51b47932adf1d5478945f913169569f5b23e3e09529ab3e55e11bb4bc60e51b", kill_on_drop: false }`
[INFO] [stdout] a51b47932adf1d5478945f913169569f5b23e3e09529ab3e55e11bb4bc60e51b