[INFO] fetching crate kitsune_p2p_mdns 0.2.3...
[INFO] checking kitsune_p2p_mdns-0.2.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate kitsune_p2p_mdns 0.2.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate kitsune_p2p_mdns 0.2.3 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 kitsune_p2p_mdns 0.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kitsune_p2p_mdns 0.2.3
[INFO] tweaked toml for crates.io crate kitsune_p2p_mdns 0.2.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate kitsune_p2p_mdns 0.2.3 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-targets v0.48.3
[INFO] [stderr]   Downloaded async-stream-impl v0.2.1
[INFO] [stderr]   Downloaded if-addrs v0.7.0
[INFO] [stderr]   Downloaded libmdns v0.7.4
[INFO] [stderr]   Downloaded dns-parser v0.8.0
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.3
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.3
[INFO] [stderr]   Downloaded async-stream v0.2.1
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.3
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.3
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.3
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.3
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.3
[INFO] [stderr]   Downloaded err-derive v0.2.4
[INFO] [stderr]   Downloaded mdns v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0f5a5aacd3331e914b0f7796eac77284b4f49352572aecc74e48cdba9ebb9f59
[INFO] running `Command { std: "docker" "start" "-a" "0f5a5aacd3331e914b0f7796eac77284b4f49352572aecc74e48cdba9ebb9f59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f5a5aacd3331e914b0f7796eac77284b4f49352572aecc74e48cdba9ebb9f59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5a5aacd3331e914b0f7796eac77284b4f49352572aecc74e48cdba9ebb9f59", kill_on_drop: false }`
[INFO] [stdout] 0f5a5aacd3331e914b0f7796eac77284b4f49352572aecc74e48cdba9ebb9f59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 37a039ef479a2afd8aba7f287552df227c0fca5d7b75b6221e11c92135230212
[INFO] running `Command { std: "docker" "start" "-a" "37a039ef479a2afd8aba7f287552df227c0fca5d7b75b6221e11c92135230212", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
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[INFO] [stderr]     Checking fastrand v1.9.0
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[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking mdns v3.0.0
[INFO] [stderr]     Checking libmdns v0.7.4
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking kitsune_p2p_mdns v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `futures_util` is imported redundantly
[INFO] [stdout]  --> examples/discover.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures_util::{self, pin_mut, stream::StreamExt};
[INFO] [stdout]   |                    ^^^^ the item `futures_util` is already defined by prelude
[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 29.22s
[INFO] running `Command { std: "docker" "inspect" "37a039ef479a2afd8aba7f287552df227c0fca5d7b75b6221e11c92135230212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37a039ef479a2afd8aba7f287552df227c0fca5d7b75b6221e11c92135230212", kill_on_drop: false }`
[INFO] [stdout] 37a039ef479a2afd8aba7f287552df227c0fca5d7b75b6221e11c92135230212