[INFO] fetching crate arc-bytes 0.3.5...
[INFO] checking arc-bytes-0.3.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate arc-bytes 0.3.5 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate arc-bytes 0.3.5 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] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate arc-bytes 0.3.5
[INFO] finished tweaking crates.io crate arc-bytes 0.3.5
[INFO] tweaked toml for crates.io crate arc-bytes 0.3.5 written to /workspace/builds/worker-2-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 18 packages
[INFO] [stderr]       Adding derive-where v1.0.0-rc.2 (latest: v1.2.7)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding pot v1.0.2 (latest: v3.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 derive-where v1.0.0-rc.2
[INFO] [stderr]   Downloaded pot v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8c581a3dd7c5a4cf09a2492dfb2704b7872ad4e30dee44be3cb6dcf3ecc8b2ea
[INFO] running `Command { std: "docker" "start" "-a" "8c581a3dd7c5a4cf09a2492dfb2704b7872ad4e30dee44be3cb6dcf3ecc8b2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c581a3dd7c5a4cf09a2492dfb2704b7872ad4e30dee44be3cb6dcf3ecc8b2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c581a3dd7c5a4cf09a2492dfb2704b7872ad4e30dee44be3cb6dcf3ecc8b2ea", kill_on_drop: false }`
[INFO] [stdout] 8c581a3dd7c5a4cf09a2492dfb2704b7872ad4e30dee44be3cb6dcf3ecc8b2ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f4e01cbdd1ab5e6a299cfa47f12dfcd7208ae4cc6bd547c27ef31b26770c9cc4
[INFO] running `Command { std: "docker" "start" "-a" "f4e01cbdd1ab5e6a299cfa47f12dfcd7208ae4cc6bd547c27ef31b26770c9cc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]    Compiling derive-where v1.0.0-rc.2
[INFO] [stderr]     Checking pot v1.0.2
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking arc-bytes v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.55s
[INFO] running `Command { std: "docker" "inspect" "f4e01cbdd1ab5e6a299cfa47f12dfcd7208ae4cc6bd547c27ef31b26770c9cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e01cbdd1ab5e6a299cfa47f12dfcd7208ae4cc6bd547c27ef31b26770c9cc4", kill_on_drop: false }`
[INFO] [stdout] f4e01cbdd1ab5e6a299cfa47f12dfcd7208ae4cc6bd547c27ef31b26770c9cc4
[INFO] checking arc-bytes-0.3.5 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate arc-bytes 0.3.5 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate arc-bytes 0.3.5 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] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate arc-bytes 0.3.5
[INFO] finished tweaking crates.io crate arc-bytes 0.3.5
[INFO] tweaked toml for crates.io crate arc-bytes 0.3.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b3bb921a65a45c1feb53a443a5d6012ae85b7877097e1b6b9dc3db0712e1862f
[INFO] running `Command { std: "docker" "start" "-a" "b3bb921a65a45c1feb53a443a5d6012ae85b7877097e1b6b9dc3db0712e1862f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3bb921a65a45c1feb53a443a5d6012ae85b7877097e1b6b9dc3db0712e1862f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3bb921a65a45c1feb53a443a5d6012ae85b7877097e1b6b9dc3db0712e1862f", kill_on_drop: false }`
[INFO] [stdout] b3bb921a65a45c1feb53a443a5d6012ae85b7877097e1b6b9dc3db0712e1862f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cac2eeade57a192021ba5d8ad03a27331421cebddb9351f5959d89d971a60b99
[INFO] running `Command { std: "docker" "start" "-a" "cac2eeade57a192021ba5d8ad03a27331421cebddb9351f5959d89d971a60b99", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]    Compiling derive-where v1.0.0-rc.2
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking pot v1.0.2
[INFO] [stderr]     Checking arc-bytes v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.34s
[INFO] running `Command { std: "docker" "inspect" "cac2eeade57a192021ba5d8ad03a27331421cebddb9351f5959d89d971a60b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac2eeade57a192021ba5d8ad03a27331421cebddb9351f5959d89d971a60b99", kill_on_drop: false }`
[INFO] [stdout] cac2eeade57a192021ba5d8ad03a27331421cebddb9351f5959d89d971a60b99