[INFO] fetching crate prokio 0.1.0...
[INFO] checking prokio-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate prokio 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate prokio 0.1.0 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 prokio 0.1.0
[INFO] finished tweaking crates.io crate prokio 0.1.0
[INFO] tweaked toml for crates.io crate prokio 0.1.0 written to /workspace/builds/worker-4-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 105 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding gloo v0.8.1 (latest: v0.11.0)
[INFO] [stderr]       Adding gloo-console v0.2.3 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-dialogs v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-events v0.1.2 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-file v0.2.3 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-history v0.1.5 (latest: v0.2.2)
[INFO] [stderr]       Adding gloo-net v0.3.1 (latest: v0.5.0)
[INFO] [stderr]       Adding gloo-render v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-storage v0.2.2 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-timers v0.2.6 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-utils v0.1.7 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-worker v0.2.1 (latest: v0.5.0)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding serde-wasm-bindgen v0.5.0 (latest: v0.6.5)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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] 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] 0d0ade3ec4a76b8dd02241c09b43b9e53a734abfefd1d57888bc2ee5bd3dd3e0
[INFO] running `Command { std: "docker" "start" "-a" "0d0ade3ec4a76b8dd02241c09b43b9e53a734abfefd1d57888bc2ee5bd3dd3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d0ade3ec4a76b8dd02241c09b43b9e53a734abfefd1d57888bc2ee5bd3dd3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0ade3ec4a76b8dd02241c09b43b9e53a734abfefd1d57888bc2ee5bd3dd3e0", kill_on_drop: false }`
[INFO] [stdout] 0d0ade3ec4a76b8dd02241c09b43b9e53a734abfefd1d57888bc2ee5bd3dd3e0
[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] 62b74a42a182601124a00bb37b251ed07711b9784ced5aeba20a8ac355150918
[INFO] running `Command { std: "docker" "start" "-a" "62b74a42a182601124a00bb37b251ed07711b9784ced5aeba20a8ac355150918", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking pinned v0.1.0
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking prokio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/rt_tokio/mod.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use std::sync::Arc;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     use super::*;
[INFO] [stdout]     |         -------- the item `Arc` is already imported here
[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 11.18s
[INFO] running `Command { std: "docker" "inspect" "62b74a42a182601124a00bb37b251ed07711b9784ced5aeba20a8ac355150918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62b74a42a182601124a00bb37b251ed07711b9784ced5aeba20a8ac355150918", kill_on_drop: false }`
[INFO] [stdout] 62b74a42a182601124a00bb37b251ed07711b9784ced5aeba20a8ac355150918