[INFO] fetching crate benchlib-rs 0.4.2...
[INFO] checking benchlib-rs-0.4.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate benchlib-rs 0.4.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate benchlib-rs 0.4.2 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 benchlib-rs 0.4.2
[INFO] finished tweaking crates.io crate benchlib-rs 0.4.2
[INFO] tweaked toml for crates.io crate benchlib-rs 0.4.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 66 packages
[INFO] [stderr]       Adding bindgen v0.58.1 (latest: v0.69.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cexpr v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding env_logger v0.8.4 (latest: v0.11.3)
[INFO] [stderr]       Adding errno v0.2.8 (latest: v0.3.8)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding nom v5.1.3 (latest: v7.1.3)
[INFO] [stderr]       Adding numtoa v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding peeking_take_while v0.1.2 (latest: v1.0.0)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding termion v1.5.6 (latest: v3.0.0)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding which v3.1.1 (latest: v6.0.1)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded which v3.1.1
[INFO] [stderr]   Downloaded termion v1.5.6
[INFO] [stderr]   Downloaded errno v0.2.8
[INFO] [stderr]   Downloaded howlong v0.1.7
[INFO] [stderr]   Downloaded shlex v1.3.0
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded redox_termios v0.1.3
[INFO] [stderr]   Downloaded lazycell v1.3.0
[INFO] [stderr]   Downloaded cexpr v0.4.0
[INFO] [stderr]   Downloaded libloading v0.8.3
[INFO] [stderr]   Downloaded clang-sys v1.7.0
[INFO] [stderr]   Downloaded nom v5.1.3
[INFO] [stderr]   Downloaded bindgen v0.58.1
[INFO] [stderr]   Downloaded env_logger v0.8.4
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b372f8089a62bad4b9877dafe516bc17ba1e6179f65f0b20d77bc4159c1d821
[INFO] running `Command { std: "docker" "start" "-a" "0b372f8089a62bad4b9877dafe516bc17ba1e6179f65f0b20d77bc4159c1d821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b372f8089a62bad4b9877dafe516bc17ba1e6179f65f0b20d77bc4159c1d821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b372f8089a62bad4b9877dafe516bc17ba1e6179f65f0b20d77bc4159c1d821", kill_on_drop: false }`
[INFO] [stdout] 0b372f8089a62bad4b9877dafe516bc17ba1e6179f65f0b20d77bc4159c1d821
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 372eaf5923ee95b391863381bdbd1b0606103b6664b44d392403033dff540e82
[INFO] running `Command { std: "docker" "start" "-a" "372eaf5923ee95b391863381bdbd1b0606103b6664b44d392403033dff540e82", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling howlong v0.1.7
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking benchlib-rs v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "372eaf5923ee95b391863381bdbd1b0606103b6664b44d392403033dff540e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "372eaf5923ee95b391863381bdbd1b0606103b6664b44d392403033dff540e82", kill_on_drop: false }`
[INFO] [stdout] 372eaf5923ee95b391863381bdbd1b0606103b6664b44d392403033dff540e82