[INFO] fetching crate neutral_types 0.2.0...
[INFO] checking neutral_types-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate neutral_types 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate neutral_types 0.2.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate neutral_types 0.2.0
[INFO] finished tweaking crates.io crate neutral_types 0.2.0
[INFO] tweaked toml for crates.io crate neutral_types 0.2.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding http-body v0.4.6 (latest: v1.0.0)
[INFO] [stderr]       Adding hyper v0.14.28 (latest: v1.2.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding serde_with v1.14.0 (latest: v3.7.0)
[INFO] [stderr]       Adding serde_with_macros v1.5.2 (latest: v3.7.0)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92dd100340e01f1394c66d4f2748eb2e48f345cd685f6546cde9d91dc89bbb3c
[INFO] running `Command { std: "docker" "start" "-a" "92dd100340e01f1394c66d4f2748eb2e48f345cd685f6546cde9d91dc89bbb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92dd100340e01f1394c66d4f2748eb2e48f345cd685f6546cde9d91dc89bbb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92dd100340e01f1394c66d4f2748eb2e48f345cd685f6546cde9d91dc89bbb3c", kill_on_drop: false }`
[INFO] [stdout] 92dd100340e01f1394c66d4f2748eb2e48f345cd685f6546cde9d91dc89bbb3c
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87843ea030550d6638e73dc78b374762a7e880d55a294acde76c82a566bc76ba
[INFO] running `Command { std: "docker" "start" "-a" "87843ea030550d6638e73dc78b374762a7e880d55a294acde76c82a566bc76ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking neutral_types v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `Command { std: "docker" "inspect" "87843ea030550d6638e73dc78b374762a7e880d55a294acde76c82a566bc76ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87843ea030550d6638e73dc78b374762a7e880d55a294acde76c82a566bc76ba", kill_on_drop: false }`
[INFO] [stdout] 87843ea030550d6638e73dc78b374762a7e880d55a294acde76c82a566bc76ba