[INFO] fetching crate async-ffi 0.5.0...
[INFO] checking async-ffi-0.5.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate async-ffi 0.5.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate async-ffi 0.5.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-ffi 0.5.0
[INFO] finished tweaking crates.io crate async-ffi 0.5.0
[INFO] tweaked toml for crates.io crate async-ffi 0.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding libloading v0.7.4 (latest: v0.8.5)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding tokio v1.29.1 (latest: v1.40.0)
[INFO] [stderr]       Adding tokio-macros v2.1.0 (latest: v2.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-ffi-macros v0.5.0
[INFO] [stderr]   Downloaded tstr_proc_macros v0.2.2
[INFO] [stderr]   Downloaded generational-arena v0.2.9
[INFO] [stderr]   Downloaded as_derive_utils v0.11.0
[INFO] [stderr]   Downloaded core_extensions_proc_macros v1.5.3
[INFO] [stderr]   Downloaded core_extensions v1.5.3
[INFO] [stderr]   Downloaded abi_stable_derive v0.11.3
[INFO] [stderr]   Downloaded repr_offset v0.2.2
[INFO] [stderr]   Downloaded abi_stable_shared v0.11.0
[INFO] [stderr]   Downloaded tstr v0.2.4
[INFO] [stderr]   Downloaded abi_stable v0.11.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 202aaa87da923996f072206eceb1e5ae4df68434699ae1448dfcc83f9b468ea1
[INFO] running `Command { std: "docker" "start" "-a" "202aaa87da923996f072206eceb1e5ae4df68434699ae1448dfcc83f9b468ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "202aaa87da923996f072206eceb1e5ae4df68434699ae1448dfcc83f9b468ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "202aaa87da923996f072206eceb1e5ae4df68434699ae1448dfcc83f9b468ea1", kill_on_drop: false }`
[INFO] [stdout] 202aaa87da923996f072206eceb1e5ae4df68434699ae1448dfcc83f9b468ea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9da3d58f78d18847d3bfd66e3778d903bceb26410656de1f40c0ab2139cd3c7
[INFO] running `Command { std: "docker" "start" "-a" "f9da3d58f78d18847d3bfd66e3778d903bceb26410656de1f40c0ab2139cd3c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking async-ffi v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/basic.rs:49:20
[INFO] [stdout]    |
[INFO] [stdout] 49 |     struct Dropper(Arc<()>);
[INFO] [stdout]    |            ------- ^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 9.15s
[INFO] running `Command { std: "docker" "inspect" "f9da3d58f78d18847d3bfd66e3778d903bceb26410656de1f40c0ab2139cd3c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9da3d58f78d18847d3bfd66e3778d903bceb26410656de1f40c0ab2139cd3c7", kill_on_drop: false }`
[INFO] [stdout] f9da3d58f78d18847d3bfd66e3778d903bceb26410656de1f40c0ab2139cd3c7