[INFO] fetching crate ioslice 0.6.0-alpha.2...
[INFO] checking ioslice-0.6.0-alpha.2 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate ioslice 0.6.0-alpha.2 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate ioslice 0.6.0-alpha.2 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ioslice 0.6.0-alpha.2
[INFO] finished tweaking crates.io crate ioslice 0.6.0-alpha.2
[INFO] tweaked toml for crates.io crate ioslice 0.6.0-alpha.2 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd02905f202df6f116bac873125d90b527ace3c2aaaf0548225a187b54fd8602
[INFO] running `Command { std: "docker" "start" "-a" "cd02905f202df6f116bac873125d90b527ace3c2aaaf0548225a187b54fd8602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd02905f202df6f116bac873125d90b527ace3c2aaaf0548225a187b54fd8602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd02905f202df6f116bac873125d90b527ace3c2aaaf0548225a187b54fd8602", kill_on_drop: false }`
[INFO] [stdout] cd02905f202df6f116bac873125d90b527ace3c2aaaf0548225a187b54fd8602
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f88e2bf0aba08a8d443482603fb2a9d647cd79496863b6918b677603b0396eb4
[INFO] running `Command { std: "docker" "start" "-a" "f88e2bf0aba08a8d443482603fb2a9d647cd79496863b6918b677603b0396eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]     Checking ioslice v0.6.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `Command { std: "docker" "inspect" "f88e2bf0aba08a8d443482603fb2a9d647cd79496863b6918b677603b0396eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88e2bf0aba08a8d443482603fb2a9d647cd79496863b6918b677603b0396eb4", kill_on_drop: false }`
[INFO] [stdout] f88e2bf0aba08a8d443482603fb2a9d647cd79496863b6918b677603b0396eb4