[INFO] cloning repository https://github.com/amogh-chavan/mandelbrot-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amogh-chavan/mandelbrot-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-chavan%2Fmandelbrot-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-chavan%2Fmandelbrot-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a16032ab62dc3644abbc73be87eb672da73da89f
[INFO] checking amogh-chavan/mandelbrot-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-chavan%2Fmandelbrot-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amogh-chavan/mandelbrot-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amogh-chavan/mandelbrot-rust
[INFO] finished tweaking git repo https://github.com/amogh-chavan/mandelbrot-rust
[INFO] tweaked toml for git repo https://github.com/amogh-chavan/mandelbrot-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/amogh-chavan/mandelbrot-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f84ed0267f02826fa655911bc34b2bec334f5caf5a5daa18f4338c5c26044cc
[INFO] running `Command { std: "docker" "start" "-a" "8f84ed0267f02826fa655911bc34b2bec334f5caf5a5daa18f4338c5c26044cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f84ed0267f02826fa655911bc34b2bec334f5caf5a5daa18f4338c5c26044cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f84ed0267f02826fa655911bc34b2bec334f5caf5a5daa18f4338c5c26044cc", kill_on_drop: false }`
[INFO] [stdout] 8f84ed0267f02826fa655911bc34b2bec334f5caf5a5daa18f4338c5c26044cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10ba19c3da1bb38475df43cce7cdb0c718d540833a500c120df6564561f46220
[INFO] running `Command { std: "docker" "start" "-a" "10ba19c3da1bb38475df43cce7cdb0c718d540833a500c120df6564561f46220", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.4
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking num v0.4.1
[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` profile [unoptimized + debuginfo] target(s) in 7.06s
[INFO] running `Command { std: "docker" "inspect" "10ba19c3da1bb38475df43cce7cdb0c718d540833a500c120df6564561f46220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10ba19c3da1bb38475df43cce7cdb0c718d540833a500c120df6564561f46220", kill_on_drop: false }`
[INFO] [stdout] 10ba19c3da1bb38475df43cce7cdb0c718d540833a500c120df6564561f46220
[INFO] checking amogh-chavan/mandelbrot-rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-chavan%2Fmandelbrot-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amogh-chavan/mandelbrot-rust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amogh-chavan/mandelbrot-rust
[INFO] finished tweaking git repo https://github.com/amogh-chavan/mandelbrot-rust
[INFO] tweaked toml for git repo https://github.com/amogh-chavan/mandelbrot-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/amogh-chavan/mandelbrot-rust 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a14faa8f2812cbae05822afb3a0728ad012a109031ebef162504c63a5a0b988e
[INFO] running `Command { std: "docker" "start" "-a" "a14faa8f2812cbae05822afb3a0728ad012a109031ebef162504c63a5a0b988e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a14faa8f2812cbae05822afb3a0728ad012a109031ebef162504c63a5a0b988e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14faa8f2812cbae05822afb3a0728ad012a109031ebef162504c63a5a0b988e", kill_on_drop: false }`
[INFO] [stdout] a14faa8f2812cbae05822afb3a0728ad012a109031ebef162504c63a5a0b988e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0e2e99e59c25bf818173b864616b03faec8b710401b95d18a65ea4d91da036d
[INFO] running `Command { std: "docker" "start" "-a" "b0e2e99e59c25bf818173b864616b03faec8b710401b95d18a65ea4d91da036d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.4
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.4
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking num v0.4.1
[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` profile [unoptimized + debuginfo] target(s) in 7.40s
[INFO] running `Command { std: "docker" "inspect" "b0e2e99e59c25bf818173b864616b03faec8b710401b95d18a65ea4d91da036d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e2e99e59c25bf818173b864616b03faec8b710401b95d18a65ea4d91da036d", kill_on_drop: false }`
[INFO] [stdout] b0e2e99e59c25bf818173b864616b03faec8b710401b95d18a65ea4d91da036d