[INFO] fetching crate skin 0.1.0...
[INFO] checking skin-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate skin 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate skin 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skin 0.1.0
[INFO] finished tweaking crates.io crate skin 0.1.0
[INFO] tweaked toml for crates.io crate skin 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate skin 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded once_cell v1.12.1
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.25
[INFO] [stderr]   Downloaded mimalloc v0.1.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aeb442c958b1e3c94ece2e424ecec66a5d3538ceb1d08915e017242798bc674
[INFO] running `Command { std: "docker" "start" "-a" "6aeb442c958b1e3c94ece2e424ecec66a5d3538ceb1d08915e017242798bc674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aeb442c958b1e3c94ece2e424ecec66a5d3538ceb1d08915e017242798bc674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aeb442c958b1e3c94ece2e424ecec66a5d3538ceb1d08915e017242798bc674", kill_on_drop: false }`
[INFO] [stdout] 6aeb442c958b1e3c94ece2e424ecec66a5d3538ceb1d08915e017242798bc674
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46999c69a98922ea92c8e8a760bc6b0ffaa40e3afc8e7fa7269a46e0269cba0e
[INFO] running `Command { std: "docker" "start" "-a" "46999c69a98922ea92c8e8a760bc6b0ffaa40e3afc8e7fa7269a46e0269cba0e", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.12.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.25
[INFO] [stderr]     Checking mimalloc v0.1.29
[INFO] [stderr]    Compiling clap_derive v3.2.7
[INFO] [stderr]     Checking clap v3.2.8
[INFO] [stderr]     Checking skin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.45s
[INFO] running `Command { std: "docker" "inspect" "46999c69a98922ea92c8e8a760bc6b0ffaa40e3afc8e7fa7269a46e0269cba0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46999c69a98922ea92c8e8a760bc6b0ffaa40e3afc8e7fa7269a46e0269cba0e", kill_on_drop: false }`
[INFO] [stdout] 46999c69a98922ea92c8e8a760bc6b0ffaa40e3afc8e7fa7269a46e0269cba0e