[INFO] cloning repository https://github.com/mimihuang/VM_practice_stack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mimihuang/VM_practice_stack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimihuang%2FVM_practice_stack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimihuang%2FVM_practice_stack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16ece245fd1c3a76c29698c47e60267b13cad4f7
[INFO] checking mimihuang/VM_practice_stack against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimihuang%2FVM_practice_stack" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mimihuang/VM_practice_stack on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mimihuang/VM_practice_stack
[INFO] finished tweaking git repo https://github.com/mimihuang/VM_practice_stack
[INFO] tweaked toml for git repo https://github.com/mimihuang/VM_practice_stack written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mimihuang/VM_practice_stack 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c90638ef2848a91f2fd09199f8a8bf312595b407facc4af96284e4d3da32a0a3
[INFO] running `Command { std: "docker" "start" "-a" "c90638ef2848a91f2fd09199f8a8bf312595b407facc4af96284e4d3da32a0a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c90638ef2848a91f2fd09199f8a8bf312595b407facc4af96284e4d3da32a0a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90638ef2848a91f2fd09199f8a8bf312595b407facc4af96284e4d3da32a0a3", kill_on_drop: false }`
[INFO] [stdout] c90638ef2848a91f2fd09199f8a8bf312595b407facc4af96284e4d3da32a0a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a21e8ae485a95c578626df63d26c0af0b4be881745cc28fa03668ee26916bfa8
[INFO] running `Command { std: "docker" "start" "-a" "a21e8ae485a95c578626df63d26c0af0b4be881745cc28fa03668ee26916bfa8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking simplevm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.15s
[INFO] running `Command { std: "docker" "inspect" "a21e8ae485a95c578626df63d26c0af0b4be881745cc28fa03668ee26916bfa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a21e8ae485a95c578626df63d26c0af0b4be881745cc28fa03668ee26916bfa8", kill_on_drop: false }`
[INFO] [stdout] a21e8ae485a95c578626df63d26c0af0b4be881745cc28fa03668ee26916bfa8