[INFO] fetching crate core2 0.3.0-alpha.1...
[INFO] checking core2-0.3.0-alpha.1 against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] extracting crate core2 0.3.0-alpha.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate core2 0.3.0-alpha.1 on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core2 0.3.0-alpha.1
[INFO] finished tweaking crates.io crate core2 0.3.0-alpha.1
[INFO] tweaked toml for crates.io crate core2 0.3.0-alpha.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a34d11ef0090349e967f7a8c7c2312e835e6af3575c7f080e1e64f4203d7832
[INFO] running `Command { std: "docker" "start" "-a" "1a34d11ef0090349e967f7a8c7c2312e835e6af3575c7f080e1e64f4203d7832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a34d11ef0090349e967f7a8c7c2312e835e6af3575c7f080e1e64f4203d7832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a34d11ef0090349e967f7a8c7c2312e835e6af3575c7f080e1e64f4203d7832", kill_on_drop: false }`
[INFO] [stdout] 1a34d11ef0090349e967f7a8c7c2312e835e6af3575c7f080e1e64f4203d7832
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b73c3c38ab08c2323b6c216fad72e213762ae70908fef84133e75ad9b7cae25
[INFO] running `Command { std: "docker" "start" "-a" "5b73c3c38ab08c2323b6c216fad72e213762ae70908fef84133e75ad9b7cae25", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking core2 v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "5b73c3c38ab08c2323b6c216fad72e213762ae70908fef84133e75ad9b7cae25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b73c3c38ab08c2323b6c216fad72e213762ae70908fef84133e75ad9b7cae25", kill_on_drop: false }`
[INFO] [stdout] 5b73c3c38ab08c2323b6c216fad72e213762ae70908fef84133e75ad9b7cae25