[INFO] cloning repository https://github.com/hongluu92/rust_vbi_homework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hongluu92/rust_vbi_homework" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhongluu92%2Frust_vbi_homework", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhongluu92%2Frust_vbi_homework'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f883f01d18d08bc7d0a0ca0b7c252d343d5833a9
[INFO] checking hongluu92/rust_vbi_homework against try#8a0378607d6b34c242e3bfa75554871be641864b for pr-143028
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhongluu92%2Frust_vbi_homework" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hongluu92/rust_vbi_homework
[INFO] finished tweaking git repo https://github.com/hongluu92/rust_vbi_homework
[INFO] tweaked toml for git repo https://github.com/hongluu92/rust_vbi_homework written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hongluu92/rust_vbi_homework on toolchain 8a0378607d6b34c242e3bfa75554871be641864b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hongluu92/rust_vbi_homework 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" "+8a0378607d6b34c242e3bfa75554871be641864b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b6e44d486605405dffe78bcd3cd2d2ef6606ec76b6e2713e1a854a31c31e0f4
[INFO] running `Command { std: "docker" "start" "-a" "2b6e44d486605405dffe78bcd3cd2d2ef6606ec76b6e2713e1a854a31c31e0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b6e44d486605405dffe78bcd3cd2d2ef6606ec76b6e2713e1a854a31c31e0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6e44d486605405dffe78bcd3cd2d2ef6606ec76b6e2713e1a854a31c31e0f4", kill_on_drop: false }`
[INFO] [stdout] 2b6e44d486605405dffe78bcd3cd2d2ef6606ec76b6e2713e1a854a31c31e0f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+8a0378607d6b34c242e3bfa75554871be641864b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f5fc1209a1ff2a6840a39c5f142a2631ca85699148ee38d8f15ef7fabb3ba0f
[INFO] running `Command { std: "docker" "start" "-a" "6f5fc1209a1ff2a6840a39c5f142a2631ca85699148ee38d8f15ef7fabb3ba0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking rust_vbi_homework v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "6f5fc1209a1ff2a6840a39c5f142a2631ca85699148ee38d8f15ef7fabb3ba0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5fc1209a1ff2a6840a39c5f142a2631ca85699148ee38d8f15ef7fabb3ba0f", kill_on_drop: false }`
[INFO] [stdout] 6f5fc1209a1ff2a6840a39c5f142a2631ca85699148ee38d8f15ef7fabb3ba0f