[INFO] fetching crate libp2p-webrtc 0.3.0...
[INFO] checking libp2p-webrtc-0.3.0 against master#8a497b7181cad4ae66dbd6cc31042b69b6bd0df7 for pr-102474
[INFO] extracting crate libp2p-webrtc 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libp2p-webrtc 0.3.0 on toolchain 8a497b7181cad4ae66dbd6cc31042b69b6bd0df7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8a497b7181cad4ae66dbd6cc31042b69b6bd0df7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libp2p-webrtc 0.3.0
[INFO] finished tweaking crates.io crate libp2p-webrtc 0.3.0
[INFO] tweaked toml for crates.io crate libp2p-webrtc 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate libp2p-webrtc 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8a497b7181cad4ae66dbd6cc31042b69b6bd0df7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+8a497b7181cad4ae66dbd6cc31042b69b6bd0df7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8f9b3b8b28a7202f1303a848cc75ab6ef7c6da77705a2cc099a61b6b4325018
[INFO] running `Command { std: "docker" "start" "-a" "b8f9b3b8b28a7202f1303a848cc75ab6ef7c6da77705a2cc099a61b6b4325018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8f9b3b8b28a7202f1303a848cc75ab6ef7c6da77705a2cc099a61b6b4325018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8f9b3b8b28a7202f1303a848cc75ab6ef7c6da77705a2cc099a61b6b4325018", kill_on_drop: false }`
[INFO] [stdout] b8f9b3b8b28a7202f1303a848cc75ab6ef7c6da77705a2cc099a61b6b4325018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+8a497b7181cad4ae66dbd6cc31042b69b6bd0df7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24bc1fc8cbcb1af48df57ad4c3be78f3ed0bf36b6a98cca3395733835a9df1ff
[INFO] running `Command { std: "docker" "start" "-a" "24bc1fc8cbcb1af48df57ad4c3be78f3ed0bf36b6a98cca3395733835a9df1ff", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "24bc1fc8cbcb1af48df57ad4c3be78f3ed0bf36b6a98cca3395733835a9df1ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24bc1fc8cbcb1af48df57ad4c3be78f3ed0bf36b6a98cca3395733835a9df1ff", kill_on_drop: false }`
[INFO] [stdout] 24bc1fc8cbcb1af48df57ad4c3be78f3ed0bf36b6a98cca3395733835a9df1ff