[INFO] fetching crate buffertk 0.8.0...
[INFO] checking buffertk-0.8.0 against master#0f6e1ae67854c3c44726e8376144c16b465fe7c6 for pr-129392
[INFO] extracting crate buffertk 0.8.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate buffertk 0.8.0 on toolchain 0f6e1ae67854c3c44726e8376144c16b465fe7c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buffertk 0.8.0
[INFO] finished tweaking crates.io crate buffertk 0.8.0
[INFO] tweaked toml for crates.io crate buffertk 0.8.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate buffertk 0.8.0 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" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded statslicer v0.4.0
[INFO] [stderr]   Downloaded derive_util v0.4.0
[INFO] [stderr]   Downloaded arrrg_derive v0.4.0
[INFO] [stderr]   Downloaded guacamole v0.8.0
[INFO] [stderr]   Downloaded arrrg v0.4.0
[INFO] [stderr]   Downloaded sig_fig_histogram v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9eab065d7d4ed877369355b6abc32cea91dae31945f0ebed1fd4e72ec679c6a
[INFO] running `Command { std: "docker" "start" "-a" "a9eab065d7d4ed877369355b6abc32cea91dae31945f0ebed1fd4e72ec679c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9eab065d7d4ed877369355b6abc32cea91dae31945f0ebed1fd4e72ec679c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9eab065d7d4ed877369355b6abc32cea91dae31945f0ebed1fd4e72ec679c6a", kill_on_drop: false }`
[INFO] [stdout] a9eab065d7d4ed877369355b6abc32cea91dae31945f0ebed1fd4e72ec679c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61a7f61ab378483d98afa3b151ef00bc4aa1195cfbf258af411abf6c2b9b0da3
[INFO] running `Command { std: "docker" "start" "-a" "61a7f61ab378483d98afa3b151ef00bc4aa1195cfbf258af411abf6c2b9b0da3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking sig_fig_histogram v0.3.0
[INFO] [stderr]     Checking buffertk v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling derive_util v0.4.0
[INFO] [stderr]    Compiling arrrg_derive v0.4.0
[INFO] [stderr]     Checking arrrg v0.4.0
[INFO] [stderr]     Checking statslicer v0.4.0
[INFO] [stderr]     Checking guacamole v0.8.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.09s
[INFO] running `Command { std: "docker" "inspect" "61a7f61ab378483d98afa3b151ef00bc4aa1195cfbf258af411abf6c2b9b0da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a7f61ab378483d98afa3b151ef00bc4aa1195cfbf258af411abf6c2b9b0da3", kill_on_drop: false }`
[INFO] [stdout] 61a7f61ab378483d98afa3b151ef00bc4aa1195cfbf258af411abf6c2b9b0da3