[INFO] fetching crate mattrs 0.0.1...
[INFO] checking mattrs-0.0.1 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate mattrs 0.0.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mattrs 0.0.1
[INFO] finished tweaking crates.io crate mattrs 0.0.1
[INFO] tweaked toml for crates.io crate mattrs 0.0.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mattrs 0.0.1 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 371fa9b57f6a7f446a1b1f781bbfc5c949366de50ed596a19de70dc4fa84f8f1
[INFO] running `Command { std: "docker" "start" "-a" "371fa9b57f6a7f446a1b1f781bbfc5c949366de50ed596a19de70dc4fa84f8f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "371fa9b57f6a7f446a1b1f781bbfc5c949366de50ed596a19de70dc4fa84f8f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "371fa9b57f6a7f446a1b1f781bbfc5c949366de50ed596a19de70dc4fa84f8f1", kill_on_drop: false }`
[INFO] [stdout] 371fa9b57f6a7f446a1b1f781bbfc5c949366de50ed596a19de70dc4fa84f8f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 997a8fa82dcf73ddf74a2430cf6ae2f2318bb26067ec0cfaf81179ef4a9db60f
[INFO] running `Command { std: "docker" "start" "-a" "997a8fa82dcf73ddf74a2430cf6ae2f2318bb26067ec0cfaf81179ef4a9db60f", kill_on_drop: false }`
[INFO] [stderr]     Checking mattrs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "997a8fa82dcf73ddf74a2430cf6ae2f2318bb26067ec0cfaf81179ef4a9db60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "997a8fa82dcf73ddf74a2430cf6ae2f2318bb26067ec0cfaf81179ef4a9db60f", kill_on_drop: false }`
[INFO] [stdout] 997a8fa82dcf73ddf74a2430cf6ae2f2318bb26067ec0cfaf81179ef4a9db60f