[INFO] cloning repository https://github.com/johngcrowley/the-rust-book-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johngcrowley/the-rust-book-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohngcrowley%2Fthe-rust-book-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohngcrowley%2Fthe-rust-book-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a2db779234379738d8295530b8baa2e1a29c7f3
[INFO] building johngcrowley/the-rust-book-practice against master#f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9 for pr-137044-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohngcrowley%2Fthe-rust-book-practice" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johngcrowley/the-rust-book-practice on toolchain f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johngcrowley/the-rust-book-practice
[INFO] finished tweaking git repo https://github.com/johngcrowley/the-rust-book-practice
[INFO] tweaked toml for git repo https://github.com/johngcrowley/the-rust-book-practice written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/johngcrowley/the-rust-book-practice 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" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3633e429c23ad5ff5b661531e8691a0b956a4ce26b539994fcb82851aadfb01f
[INFO] running `Command { std: "docker" "start" "-a" "3633e429c23ad5ff5b661531e8691a0b956a4ce26b539994fcb82851aadfb01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3633e429c23ad5ff5b661531e8691a0b956a4ce26b539994fcb82851aadfb01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3633e429c23ad5ff5b661531e8691a0b956a4ce26b539994fcb82851aadfb01f", kill_on_drop: false }`
[INFO] [stdout] 3633e429c23ad5ff5b661531e8691a0b956a4ce26b539994fcb82851aadfb01f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 585330068d0f97903ce0193ff3d7fc979439d85f3d6ff88a8771911cc319a6e4
[INFO] running `Command { std: "docker" "start" "-a" "585330068d0f97903ce0193ff3d7fc979439d85f3d6ff88a8771911cc319a6e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "585330068d0f97903ce0193ff3d7fc979439d85f3d6ff88a8771911cc319a6e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "585330068d0f97903ce0193ff3d7fc979439d85f3d6ff88a8771911cc319a6e4", kill_on_drop: false }`
[INFO] [stdout] 585330068d0f97903ce0193ff3d7fc979439d85f3d6ff88a8771911cc319a6e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 577e9712eb42af88c7edfd6f33887bcc935c9188ed7760e5c0a41a68fb1604de
[INFO] running `Command { std: "docker" "start" "-a" "577e9712eb42af88c7edfd6f33887bcc935c9188ed7760e5c0a41a68fb1604de", kill_on_drop: false }`
[INFO] [stderr]    Compiling challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "577e9712eb42af88c7edfd6f33887bcc935c9188ed7760e5c0a41a68fb1604de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577e9712eb42af88c7edfd6f33887bcc935c9188ed7760e5c0a41a68fb1604de", kill_on_drop: false }`
[INFO] [stdout] 577e9712eb42af88c7edfd6f33887bcc935c9188ed7760e5c0a41a68fb1604de