[INFO] fetching crate mcp 0.1.1...
[INFO] checking mcp-0.1.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate mcp 0.1.1 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate mcp 0.1.1 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 mcp 0.1.1
[INFO] finished tweaking crates.io crate mcp 0.1.1
[INFO] tweaked toml for crates.io crate mcp 0.1.1 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] c71fcb9b122827ee7b601695750c21195136f10f1ae31b790a35a2ca7a10435c
[INFO] running `Command { std: "docker" "start" "-a" "c71fcb9b122827ee7b601695750c21195136f10f1ae31b790a35a2ca7a10435c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c71fcb9b122827ee7b601695750c21195136f10f1ae31b790a35a2ca7a10435c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71fcb9b122827ee7b601695750c21195136f10f1ae31b790a35a2ca7a10435c", kill_on_drop: false }`
[INFO] [stdout] c71fcb9b122827ee7b601695750c21195136f10f1ae31b790a35a2ca7a10435c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] 9ecf5375f61c80eff2cb85c149e5389687f34cc147b762d18b426d6afc12354e
[INFO] running `Command { std: "docker" "start" "-a" "9ecf5375f61c80eff2cb85c149e5389687f34cc147b762d18b426d6afc12354e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mcp v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `Command { std: "docker" "inspect" "9ecf5375f61c80eff2cb85c149e5389687f34cc147b762d18b426d6afc12354e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ecf5375f61c80eff2cb85c149e5389687f34cc147b762d18b426d6afc12354e", kill_on_drop: false }`
[INFO] [stdout] 9ecf5375f61c80eff2cb85c149e5389687f34cc147b762d18b426d6afc12354e
