[INFO] fetching crate repr-size 0.1.2...
[INFO] checking repr-size-0.1.2 against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] extracting crate repr-size 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate repr-size 0.1.2 on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate repr-size 0.1.2
[INFO] finished tweaking crates.io crate repr-size 0.1.2
[INFO] tweaked toml for crates.io crate repr-size 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59e274ccf15ff2ce8288e747abe5d9dd2b14d75781d329ca12fcb0e44117a1f5
[INFO] running `Command { std: "docker" "start" "-a" "59e274ccf15ff2ce8288e747abe5d9dd2b14d75781d329ca12fcb0e44117a1f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59e274ccf15ff2ce8288e747abe5d9dd2b14d75781d329ca12fcb0e44117a1f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59e274ccf15ff2ce8288e747abe5d9dd2b14d75781d329ca12fcb0e44117a1f5", kill_on_drop: false }`
[INFO] [stdout] 59e274ccf15ff2ce8288e747abe5d9dd2b14d75781d329ca12fcb0e44117a1f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 040f64d6a167059d9d7d0903e0d292af5079e6adcb0fa9bd3cfc8301c1d1203c
[INFO] running `Command { std: "docker" "start" "-a" "040f64d6a167059d9d7d0903e0d292af5079e6adcb0fa9bd3cfc8301c1d1203c", kill_on_drop: false }`
[INFO] [stderr]     Checking repr-size v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "040f64d6a167059d9d7d0903e0d292af5079e6adcb0fa9bd3cfc8301c1d1203c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "040f64d6a167059d9d7d0903e0d292af5079e6adcb0fa9bd3cfc8301c1d1203c", kill_on_drop: false }`
[INFO] [stdout] 040f64d6a167059d9d7d0903e0d292af5079e6adcb0fa9bd3cfc8301c1d1203c
[ERROR] this task or one of its parent failed!
[ERROR] error sending request for url (https://crater.rust-lang.org/agent-api/record-progress): connection closed before message completed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking repr-size-0.1.2 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] extracting crate repr-size 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate repr-size 0.1.2 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate repr-size 0.1.2
[INFO] finished tweaking crates.io crate repr-size 0.1.2
[INFO] tweaked toml for crates.io crate repr-size 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afb4ee2dcdea4f3fcb016397b717520b844cb8ad6f4cfede5123b7f54db1196c
[INFO] running `Command { std: "docker" "start" "-a" "afb4ee2dcdea4f3fcb016397b717520b844cb8ad6f4cfede5123b7f54db1196c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afb4ee2dcdea4f3fcb016397b717520b844cb8ad6f4cfede5123b7f54db1196c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb4ee2dcdea4f3fcb016397b717520b844cb8ad6f4cfede5123b7f54db1196c", kill_on_drop: false }`
[INFO] [stdout] afb4ee2dcdea4f3fcb016397b717520b844cb8ad6f4cfede5123b7f54db1196c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5a537dee562e3d5d0a1a442c8dd732b1cd401f9c77304b5ef2551a2f7d2c938
[INFO] running `Command { std: "docker" "start" "-a" "f5a537dee562e3d5d0a1a442c8dd732b1cd401f9c77304b5ef2551a2f7d2c938", kill_on_drop: false }`
[INFO] [stderr]     Checking repr-size v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "f5a537dee562e3d5d0a1a442c8dd732b1cd401f9c77304b5ef2551a2f7d2c938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a537dee562e3d5d0a1a442c8dd732b1cd401f9c77304b5ef2551a2f7d2c938", kill_on_drop: false }`
[INFO] [stdout] f5a537dee562e3d5d0a1a442c8dd732b1cd401f9c77304b5ef2551a2f7d2c938