[INFO] fetching crate mol-core 0.3.0...
[INFO] checking mol-core-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mol-core 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mol-core 0.3.0 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 mol-core 0.3.0
[INFO] finished tweaking crates.io crate mol-core 0.3.0
[INFO] tweaked toml for crates.io crate mol-core 0.3.0 written to /workspace/builds/worker-6-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 31 packages
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding libloading v0.7.4 (latest: v0.8.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[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 mol-derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4f9f17fe8a8c4bf522b3d00fc8fb154de201757afe4be982e69a4023f68af8e6
[INFO] running `Command { std: "docker" "start" "-a" "4f9f17fe8a8c4bf522b3d00fc8fb154de201757afe4be982e69a4023f68af8e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f9f17fe8a8c4bf522b3d00fc8fb154de201757afe4be982e69a4023f68af8e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9f17fe8a8c4bf522b3d00fc8fb154de201757afe4be982e69a4023f68af8e6", kill_on_drop: false }`
[INFO] [stdout] 4f9f17fe8a8c4bf522b3d00fc8fb154de201757afe4be982e69a4023f68af8e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 888dc35b0a13a9507d47f1975a6903503b08ada116a7dac8c21111686c053be6
[INFO] running `Command { std: "docker" "start" "-a" "888dc35b0a13a9507d47f1975a6903503b08ada116a7dac8c21111686c053be6", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling mol-core v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stdout] warning: the item `Versioned` is imported redundantly
[INFO] [stdout]    --> src/semantic.rs:119:36
[INFO] [stdout]     |
[INFO] [stdout] 118 |   use super::*;
[INFO] [stdout]     |       -------- the item `Versioned` is already imported here
[INFO] [stdout] 119 |   use crate::version::{VersionMod, Versioned};
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.77s
[INFO] running `Command { std: "docker" "inspect" "888dc35b0a13a9507d47f1975a6903503b08ada116a7dac8c21111686c053be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "888dc35b0a13a9507d47f1975a6903503b08ada116a7dac8c21111686c053be6", kill_on_drop: false }`
[INFO] [stdout] 888dc35b0a13a9507d47f1975a6903503b08ada116a7dac8c21111686c053be6
[INFO] checking mol-core-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate mol-core 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mol-core 0.3.0 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 mol-core 0.3.0
[INFO] finished tweaking crates.io crate mol-core 0.3.0
[INFO] tweaked toml for crates.io crate mol-core 0.3.0 written to /workspace/builds/worker-6-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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 30128b1638f743722690bb8d7fb0aa308c4ec18081a442cd48ad3f6084567a19
[INFO] running `Command { std: "docker" "start" "-a" "30128b1638f743722690bb8d7fb0aa308c4ec18081a442cd48ad3f6084567a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30128b1638f743722690bb8d7fb0aa308c4ec18081a442cd48ad3f6084567a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30128b1638f743722690bb8d7fb0aa308c4ec18081a442cd48ad3f6084567a19", kill_on_drop: false }`
[INFO] [stdout] 30128b1638f743722690bb8d7fb0aa308c4ec18081a442cd48ad3f6084567a19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8645bcc31649c67bec21540a47a8d42592d2c6cdc0177d7be77b744777a2425d
[INFO] running `Command { std: "docker" "start" "-a" "8645bcc31649c67bec21540a47a8d42592d2c6cdc0177d7be77b744777a2425d", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling mol-core v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stdout] warning: the item `Versioned` is imported redundantly
[INFO] [stdout]    --> src/semantic.rs:119:36
[INFO] [stdout]     |
[INFO] [stdout] 118 |   use super::*;
[INFO] [stdout]     |       -------- the item `Versioned` is already imported here
[INFO] [stdout] 119 |   use crate::version::{VersionMod, Versioned};
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.64s
[INFO] running `Command { std: "docker" "inspect" "8645bcc31649c67bec21540a47a8d42592d2c6cdc0177d7be77b744777a2425d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8645bcc31649c67bec21540a47a8d42592d2c6cdc0177d7be77b744777a2425d", kill_on_drop: false }`
[INFO] [stdout] 8645bcc31649c67bec21540a47a8d42592d2c6cdc0177d7be77b744777a2425d