[INFO] cloning repository https://github.com/Chanho-Seong/RustIOExample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chanho-Seong/RustIOExample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChanho-Seong%2FRustIOExample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChanho-Seong%2FRustIOExample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8a97414967b68b97faf5b59b24ae480caa16cda
[INFO] checking Chanho-Seong/RustIOExample against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChanho-Seong%2FRustIOExample" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chanho-Seong/RustIOExample on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Chanho-Seong/RustIOExample
[INFO] finished tweaking git repo https://github.com/Chanho-Seong/RustIOExample
[INFO] tweaked toml for git repo https://github.com/Chanho-Seong/RustIOExample written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Chanho-Seong/RustIOExample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68fb3fc1992cf919606a42562b5a7e7a2e09bfad1061604c538e1b19d53622b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "68fb3fc1992cf919606a42562b5a7e7a2e09bfad1061604c538e1b19d53622b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68fb3fc1992cf919606a42562b5a7e7a2e09bfad1061604c538e1b19d53622b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68fb3fc1992cf919606a42562b5a7e7a2e09bfad1061604c538e1b19d53622b7", kill_on_drop: false }`
[INFO] [stdout] 68fb3fc1992cf919606a42562b5a7e7a2e09bfad1061604c538e1b19d53622b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f87312651d82dede6eb064dcfe4e5cc2b77a9e9fdce4dab13565248f4e33d46
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3f87312651d82dede6eb064dcfe4e5cc2b77a9e9fdce4dab13565248f4e33d46", kill_on_drop: false }`
[INFO] [stderr]     Checking greprs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "3f87312651d82dede6eb064dcfe4e5cc2b77a9e9fdce4dab13565248f4e33d46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f87312651d82dede6eb064dcfe4e5cc2b77a9e9fdce4dab13565248f4e33d46", kill_on_drop: false }`
[INFO] [stdout] 3f87312651d82dede6eb064dcfe4e5cc2b77a9e9fdce4dab13565248f4e33d46