[INFO] fetching crate burn-dataset 0.20.0-pre.6...
[INFO] checking burn-dataset-0.20.0-pre.6 against master#377656d3dd3f9c23a9c8713e163f4365a5261a84 for pr-146470-4
[INFO] extracting crate burn-dataset 0.20.0-pre.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate burn-dataset 0.20.0-pre.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate burn-dataset 0.20.0-pre.6
[INFO] tweaked toml for crates.io crate burn-dataset 0.20.0-pre.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate burn-dataset 0.20.0-pre.6 on toolchain 377656d3dd3f9c23a9c8713e163f4365a5261a84
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate burn-dataset 0.20.0-pre.6 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" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "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 ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fca7eaf3badc141500cabb44dd7994f7402eb927493f33c7d86d79b40042e26e
[INFO] running `Command { std: "docker" "start" "-a" "fca7eaf3badc141500cabb44dd7994f7402eb927493f33c7d86d79b40042e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fca7eaf3badc141500cabb44dd7994f7402eb927493f33c7d86d79b40042e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fca7eaf3badc141500cabb44dd7994f7402eb927493f33c7d86d79b40042e26e", kill_on_drop: false }`
[INFO] [stdout] fca7eaf3badc141500cabb44dd7994f7402eb927493f33c7d86d79b40042e26e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+377656d3dd3f9c23a9c8713e163f4365a5261a84" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60f214f27573a0f1d6d9ed221fb022bcc15c63e790791f1b7f8c9872136cab0a
[INFO] running `Command { std: "docker" "start" "-a" "60f214f27573a0f1d6d9ed221fb022bcc15c63e790791f1b7f8c9872136cab0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
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[INFO] [stderr]     Checking burn-dataset v0.20.0-pre.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "60f214f27573a0f1d6d9ed221fb022bcc15c63e790791f1b7f8c9872136cab0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f214f27573a0f1d6d9ed221fb022bcc15c63e790791f1b7f8c9872136cab0a", kill_on_drop: false }`
[INFO] [stdout] 60f214f27573a0f1d6d9ed221fb022bcc15c63e790791f1b7f8c9872136cab0a