[INFO] fetching crate ac 0.1.0...
[INFO] checking ac-0.1.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate ac 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ac 0.1.0 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 ac 0.1.0
[INFO] finished tweaking crates.io crate ac 0.1.0
[INFO] tweaked toml for crates.io crate ac 0.1.0 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 0492991eddc0090b89b194cfb27cc905f7c8a81a94c78668bd080b7dc1e923a6
[INFO] running `Command { std: "docker" "start" "-a" "0492991eddc0090b89b194cfb27cc905f7c8a81a94c78668bd080b7dc1e923a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0492991eddc0090b89b194cfb27cc905f7c8a81a94c78668bd080b7dc1e923a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0492991eddc0090b89b194cfb27cc905f7c8a81a94c78668bd080b7dc1e923a6", kill_on_drop: false }`
[INFO] [stdout] 0492991eddc0090b89b194cfb27cc905f7c8a81a94c78668bd080b7dc1e923a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] c5d1a479e79c574d67184c0579ed6979ddf24657b07062e500cc704a076b28d6
[INFO] running `Command { std: "docker" "start" "-a" "c5d1a479e79c574d67184c0579ed6979ddf24657b07062e500cc704a076b28d6", kill_on_drop: false }`
[INFO] [stderr]     Checking ac v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "c5d1a479e79c574d67184c0579ed6979ddf24657b07062e500cc704a076b28d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d1a479e79c574d67184c0579ed6979ddf24657b07062e500cc704a076b28d6", kill_on_drop: false }`
[INFO] [stdout] c5d1a479e79c574d67184c0579ed6979ddf24657b07062e500cc704a076b28d6