[INFO] fetching crate forc-util 0.71.0...
[INFO] checking forc-util-0.71.0 against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for pr-155501
[INFO] extracting crate forc-util 0.71.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate forc-util 0.71.0
[INFO] finished tweaking crates.io crate forc-util 0.71.0
[INFO] tweaked toml for crates.io crate forc-util 0.71.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate forc-util 0.71.0 on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate forc-util 0.71.0 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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bacf1359f0525a61b570e6573459f600ef54ec3d3e54ca97c99f9e571f5498d
[INFO] running `Command { std: "docker" "start" "-a" "0bacf1359f0525a61b570e6573459f600ef54ec3d3e54ca97c99f9e571f5498d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bacf1359f0525a61b570e6573459f600ef54ec3d3e54ca97c99f9e571f5498d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bacf1359f0525a61b570e6573459f600ef54ec3d3e54ca97c99f9e571f5498d", kill_on_drop: false }`
[INFO] [stdout] 0bacf1359f0525a61b570e6573459f600ef54ec3d3e54ca97c99f9e571f5498d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27a8df10320b4d438f9471aef1a9c7631ab44613fc09b8294b7d0217ad4c5715
[INFO] running `Command { std: "docker" "start" "-a" "27a8df10320b4d438f9471aef1a9c7631ab44613fc09b8294b7d0217ad4c5715", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
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[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking ethnum v1.5.2
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[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stdout] error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ethnum-1.5.2/src/error.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     unsafe { mem::transmute(()) }
[INFO] [stdout]    |              ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: source type: `()` (0 bits)
[INFO] [stdout]    = note: target type: `TryFromIntError` (8 bits)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking vec1 v1.12.1
[INFO] [stderr]     Checking annotate-snippets v0.10.2
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling snafu-derive v0.7.5
[INFO] [stdout] For more information about this error, try `rustc --explain E0512`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ethnum` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "27a8df10320b4d438f9471aef1a9c7631ab44613fc09b8294b7d0217ad4c5715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a8df10320b4d438f9471aef1a9c7631ab44613fc09b8294b7d0217ad4c5715", kill_on_drop: false }`
[INFO] [stdout] 27a8df10320b4d438f9471aef1a9c7631ab44613fc09b8294b7d0217ad4c5715