[INFO] fetching crate buffertk 0.12.0...
[INFO] checking buffertk-0.12.0 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4
[INFO] extracting crate buffertk 0.12.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate buffertk 0.12.0 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buffertk 0.12.0
[INFO] finished tweaking crates.io crate buffertk 0.12.0
[INFO] tweaked toml for crates.io crate buffertk 0.12.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate buffertk 0.12.0 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" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.37
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded arrrg v0.7.0
[INFO] [stderr]   Downloaded arrrg_derive v0.7.0
[INFO] [stderr]   Downloaded derive_util v0.4.0
[INFO] [stderr]   Downloaded guacamole v0.11.0
[INFO] [stderr]   Downloaded sig_fig_histogram v0.5.0
[INFO] [stderr]   Downloaded statslicer v0.8.0
[INFO] [stderr]   Downloaded unicode-width v0.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78850d56ddf10e5ed989f6de71031f1ecd64beb14c546850ef005ca98d53b93a
[INFO] running `Command { std: "docker" "start" "-a" "78850d56ddf10e5ed989f6de71031f1ecd64beb14c546850ef005ca98d53b93a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78850d56ddf10e5ed989f6de71031f1ecd64beb14c546850ef005ca98d53b93a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78850d56ddf10e5ed989f6de71031f1ecd64beb14c546850ef005ca98d53b93a", kill_on_drop: false }`
[INFO] [stdout] 78850d56ddf10e5ed989f6de71031f1ecd64beb14c546850ef005ca98d53b93a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14e1d2a1521a99f27a70fc03d91f7978f1419c48fe1671bde8f8dca79812a74d
[INFO] running `Command { std: "docker" "start" "-a" "14e1d2a1521a99f27a70fc03d91f7978f1419c48fe1671bde8f8dca79812a74d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking buffertk v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking sig_fig_histogram v0.5.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling derive_util v0.4.0
[INFO] [stderr]    Compiling arrrg_derive v0.7.0
[INFO] [stderr]     Checking arrrg v0.7.0
[INFO] [stderr]     Checking statslicer v0.8.0
[INFO] [stderr]     Checking guacamole v0.11.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.62s
[INFO] running `Command { std: "docker" "inspect" "14e1d2a1521a99f27a70fc03d91f7978f1419c48fe1671bde8f8dca79812a74d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e1d2a1521a99f27a70fc03d91f7978f1419c48fe1671bde8f8dca79812a74d", kill_on_drop: false }`
[INFO] [stdout] 14e1d2a1521a99f27a70fc03d91f7978f1419c48fe1671bde8f8dca79812a74d