[INFO] cloning repository https://github.com/t0m3k/rust-mandelbrot-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t0m3k/rust-mandelbrot-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0m3k%2Frust-mandelbrot-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0m3k%2Frust-mandelbrot-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40ebaef0e6d3edaad6497a31a42611eaa756326a
[INFO] checking t0m3k/rust-mandelbrot-generator against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft0m3k%2Frust-mandelbrot-generator" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/t0m3k/rust-mandelbrot-generator 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/t0m3k/rust-mandelbrot-generator
[INFO] finished tweaking git repo https://github.com/t0m3k/rust-mandelbrot-generator
[INFO] tweaked toml for git repo https://github.com/t0m3k/rust-mandelbrot-generator written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/t0m3k/rust-mandelbrot-generator 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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4161e550be4ef734b2e644437d5bcba0542aa5d738c520e1de705e2cd425569e
[INFO] running `Command { std: "docker" "start" "-a" "4161e550be4ef734b2e644437d5bcba0542aa5d738c520e1de705e2cd425569e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4161e550be4ef734b2e644437d5bcba0542aa5d738c520e1de705e2cd425569e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4161e550be4ef734b2e644437d5bcba0542aa5d738c520e1de705e2cd425569e", kill_on_drop: false }`
[INFO] [stdout] 4161e550be4ef734b2e644437d5bcba0542aa5d738c520e1de705e2cd425569e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c5927b4925964748fa9694d6c95d4e5b27408f3973eb9c715880cb63143cc89b
[INFO] running `Command { std: "docker" "start" "-a" "c5927b4925964748fa9694d6c95d4e5b27408f3973eb9c715880cb63143cc89b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.00s
[INFO] running `Command { std: "docker" "inspect" "c5927b4925964748fa9694d6c95d4e5b27408f3973eb9c715880cb63143cc89b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5927b4925964748fa9694d6c95d4e5b27408f3973eb9c715880cb63143cc89b", kill_on_drop: false }`
[INFO] [stdout] c5927b4925964748fa9694d6c95d4e5b27408f3973eb9c715880cb63143cc89b