[INFO] fetching crate sync42 0.4.0...
[INFO] checking sync42-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate sync42 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate sync42 0.4.0 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 sync42 0.4.0
[INFO] finished tweaking crates.io crate sync42 0.4.0
[INFO] tweaked toml for crates.io crate sync42 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate sync42 0.4.0 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 biometrics v0.4.0
[INFO] [stderr]   Downloaded utilz v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 698a71f77212262dd306e3575d78f07d7da5f2312bad38ae3ea015f5a9cd2648
[INFO] running `Command { std: "docker" "start" "-a" "698a71f77212262dd306e3575d78f07d7da5f2312bad38ae3ea015f5a9cd2648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "698a71f77212262dd306e3575d78f07d7da5f2312bad38ae3ea015f5a9cd2648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "698a71f77212262dd306e3575d78f07d7da5f2312bad38ae3ea015f5a9cd2648", kill_on_drop: false }`
[INFO] [stdout] 698a71f77212262dd306e3575d78f07d7da5f2312bad38ae3ea015f5a9cd2648
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3a1c6ef850d1afcbbc4e9d6175170dc024dd848fbea6ff2a8cef1a48b25da80b
[INFO] running `Command { std: "docker" "start" "-a" "3a1c6ef850d1afcbbc4e9d6175170dc024dd848fbea6ff2a8cef1a48b25da80b", kill_on_drop: false }`
[INFO] [stderr]     Checking utilz v0.2.0
[INFO] [stderr]     Checking biometrics v0.4.0
[INFO] [stderr]     Checking sync42 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "3a1c6ef850d1afcbbc4e9d6175170dc024dd848fbea6ff2a8cef1a48b25da80b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a1c6ef850d1afcbbc4e9d6175170dc024dd848fbea6ff2a8cef1a48b25da80b", kill_on_drop: false }`
[INFO] [stdout] 3a1c6ef850d1afcbbc4e9d6175170dc024dd848fbea6ff2a8cef1a48b25da80b
[INFO] checking sync42-0.4.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate sync42 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate sync42 0.4.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sync42 0.4.0
[INFO] finished tweaking crates.io crate sync42 0.4.0
[INFO] tweaked toml for crates.io crate sync42 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate sync42 0.4.0 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d2a1c5d1ed4328d4c690c483b0dbb4878a37ce40f6bcf8543d53a99ea33e427
[INFO] running `Command { std: "docker" "start" "-a" "0d2a1c5d1ed4328d4c690c483b0dbb4878a37ce40f6bcf8543d53a99ea33e427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d2a1c5d1ed4328d4c690c483b0dbb4878a37ce40f6bcf8543d53a99ea33e427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2a1c5d1ed4328d4c690c483b0dbb4878a37ce40f6bcf8543d53a99ea33e427", kill_on_drop: false }`
[INFO] [stdout] 0d2a1c5d1ed4328d4c690c483b0dbb4878a37ce40f6bcf8543d53a99ea33e427
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc0d3f5c93b032f55cef86155b91f1e7487f6ba5d782759e5b52c97de740cd87
[INFO] running `Command { std: "docker" "start" "-a" "bc0d3f5c93b032f55cef86155b91f1e7487f6ba5d782759e5b52c97de740cd87", kill_on_drop: false }`
[INFO] [stderr]     Checking utilz v0.2.0
[INFO] [stderr]     Checking biometrics v0.4.0
[INFO] [stderr]     Checking sync42 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "bc0d3f5c93b032f55cef86155b91f1e7487f6ba5d782759e5b52c97de740cd87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0d3f5c93b032f55cef86155b91f1e7487f6ba5d782759e5b52c97de740cd87", kill_on_drop: false }`
[INFO] [stdout] bc0d3f5c93b032f55cef86155b91f1e7487f6ba5d782759e5b52c97de740cd87