[INFO] fetching crate abstract-impl 0.2.4...
[INFO] checking abstract-impl-0.2.4 against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-1
[INFO] extracting crate abstract-impl 0.2.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate abstract-impl 0.2.4
[INFO] finished tweaking crates.io crate abstract-impl 0.2.4
[INFO] tweaked toml for crates.io crate abstract-impl 0.2.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate abstract-impl 0.2.4 on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate abstract-impl 0.2.4 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" "+38c2997544af84fe301d600d6896397738163002" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33198d1a9edb06481278c9d00c689f12dd4b3d16d6517c77d30ea6e5b8104b12
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[INFO] running `Command { std: "docker" "inspect" "33198d1a9edb06481278c9d00c689f12dd4b3d16d6517c77d30ea6e5b8104b12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33198d1a9edb06481278c9d00c689f12dd4b3d16d6517c77d30ea6e5b8104b12", kill_on_drop: false }`
[INFO] [stdout] 33198d1a9edb06481278c9d00c689f12dd4b3d16d6517c77d30ea6e5b8104b12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 613bf194c9544629abc7ccf03f81b6ed2603a328cd23729b718f8ad88241fb42
[INFO] running `Command { std: "docker" "start" "-a" "613bf194c9544629abc7ccf03f81b6ed2603a328cd23729b718f8ad88241fb42", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking unicode-ident v1.0.14
[INFO] [stderr]     Checking quote v1.0.38
[INFO] [stderr]     Checking syn v2.0.96
[INFO] [stderr]     Checking abstract-impl v0.2.4 (/opt/rustwide/workdir)
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[INFO] running `Command { std: "docker" "rm" "-f" "613bf194c9544629abc7ccf03f81b6ed2603a328cd23729b718f8ad88241fb42", kill_on_drop: false }`
[INFO] [stdout] 613bf194c9544629abc7ccf03f81b6ed2603a328cd23729b718f8ad88241fb42