[INFO] fetching crate hello_exercism 0.5.5...
[INFO] checking hello_exercism-0.5.5 against 1.55.0 for beta-1.56-3
[INFO] extracting crate hello_exercism 0.5.5 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate hello_exercism 0.5.5 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hello_exercism 0.5.5
[INFO] finished tweaking crates.io crate hello_exercism 0.5.5
[INFO] tweaked toml for crates.io crate hello_exercism 0.5.5 written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] crate crates.io crate hello_exercism 0.5.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 hello_extern v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7970690f1d0648d1b6a9cfb89a5fb2125e268354be648549ed153854c49c43dc
[INFO] running `Command { std: "docker" "start" "-a" "7970690f1d0648d1b6a9cfb89a5fb2125e268354be648549ed153854c49c43dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7970690f1d0648d1b6a9cfb89a5fb2125e268354be648549ed153854c49c43dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7970690f1d0648d1b6a9cfb89a5fb2125e268354be648549ed153854c49c43dc", kill_on_drop: false }`
[INFO] [stdout] 7970690f1d0648d1b6a9cfb89a5fb2125e268354be648549ed153854c49c43dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc4e36f265b2638332313595844a5495e184d997e4b1fcbe629aeb288c90f53d
[INFO] running `Command { std: "docker" "start" "-a" "cc4e36f265b2638332313595844a5495e184d997e4b1fcbe629aeb288c90f53d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking hello_extern v0.1.1
[INFO] [stderr]     Checking hello_exercism v0.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `Command { std: "docker" "inspect" "cc4e36f265b2638332313595844a5495e184d997e4b1fcbe629aeb288c90f53d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4e36f265b2638332313595844a5495e184d997e4b1fcbe629aeb288c90f53d", kill_on_drop: false }`
[INFO] [stdout] cc4e36f265b2638332313595844a5495e184d997e4b1fcbe629aeb288c90f53d
