[INFO] cloning repository https://github.com/Mathemmagician/rustygrad-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mathemmagician/rustygrad-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathemmagician%2Frustygrad-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathemmagician%2Frustygrad-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 943fe31ad1dd70125407cbbfdf08ca589883a9e4
[INFO] checking Mathemmagician/rustygrad-from-scratch against try#afeffcd090fe6cee35c99f8b5539d74aa443fe34 for pr-140956
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathemmagician%2Frustygrad-from-scratch" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Mathemmagician/rustygrad-from-scratch
[INFO] finished tweaking git repo https://github.com/Mathemmagician/rustygrad-from-scratch
[INFO] tweaked toml for git repo https://github.com/Mathemmagician/rustygrad-from-scratch written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Mathemmagician/rustygrad-from-scratch on toolchain afeffcd090fe6cee35c99f8b5539d74aa443fe34
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+afeffcd090fe6cee35c99f8b5539d74aa443fe34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Mathemmagician/rustygrad-from-scratch 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" "+afeffcd090fe6cee35c99f8b5539d74aa443fe34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded impl_ops v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+afeffcd090fe6cee35c99f8b5539d74aa443fe34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b6b47ae585f87af1ba185cc6c449c009cb92a61e2a5aee46b9522ca403dd99e
[INFO] running `Command { std: "docker" "start" "-a" "4b6b47ae585f87af1ba185cc6c449c009cb92a61e2a5aee46b9522ca403dd99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b6b47ae585f87af1ba185cc6c449c009cb92a61e2a5aee46b9522ca403dd99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b6b47ae585f87af1ba185cc6c449c009cb92a61e2a5aee46b9522ca403dd99e", kill_on_drop: false }`
[INFO] [stdout] 4b6b47ae585f87af1ba185cc6c449c009cb92a61e2a5aee46b9522ca403dd99e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+afeffcd090fe6cee35c99f8b5539d74aa443fe34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3968aabc456fedd77161ff53d6c696b09ccf71e85c382b93abc786f51872e906
[INFO] running `Command { std: "docker" "start" "-a" "3968aabc456fedd77161ff53d6c696b09ccf71e85c382b93abc786f51872e906", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking impl_ops v0.1.1
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking uuid v1.3.0
[INFO] [stderr]     Checking rustygrad-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "3968aabc456fedd77161ff53d6c696b09ccf71e85c382b93abc786f51872e906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3968aabc456fedd77161ff53d6c696b09ccf71e85c382b93abc786f51872e906", kill_on_drop: false }`
[INFO] [stdout] 3968aabc456fedd77161ff53d6c696b09ccf71e85c382b93abc786f51872e906