[INFO] fetching crate async-ffi 0.5.0...
[INFO] checking async-ffi-0.5.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate async-ffi 0.5.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate async-ffi 0.5.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "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-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.22.0)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.29.0)
[INFO] [stderr]       Adding libloading v0.7.4 (latest: v0.8.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.35.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.60)
[INFO] [stderr]       Adding tokio v1.29.1 (latest: v1.37.0)
[INFO] [stderr]       Adding tokio-macros v2.1.0 (latest: v2.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tstr_proc_macros v0.2.2
[INFO] [stderr]   Downloaded async-ffi-macros v0.5.0
[INFO] [stderr]   Downloaded tstr v0.2.4
[INFO] [stderr]   Downloaded core_extensions_proc_macros v1.5.3
[INFO] [stderr]   Downloaded as_derive_utils v0.11.0
[INFO] [stderr]   Downloaded typed-arena v2.0.2
[INFO] [stderr]   Downloaded abi_stable_shared v0.11.0
[INFO] [stderr]   Downloaded repr_offset v0.2.2
[INFO] [stderr]   Downloaded core_extensions v1.5.3
[INFO] [stderr]   Downloaded abi_stable_derive v0.11.3
[INFO] [stderr]   Downloaded abi_stable v0.11.3
[INFO] [stderr]   Downloaded tokio v1.29.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2432d2a804bc153229bca8356aa3e66f133a4a57c7cb9b1638fa75a6a0be301
[INFO] running `Command { std: "docker" "start" "-a" "d2432d2a804bc153229bca8356aa3e66f133a4a57c7cb9b1638fa75a6a0be301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2432d2a804bc153229bca8356aa3e66f133a4a57c7cb9b1638fa75a6a0be301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2432d2a804bc153229bca8356aa3e66f133a4a57c7cb9b1638fa75a6a0be301", kill_on_drop: false }`
[INFO] [stdout] d2432d2a804bc153229bca8356aa3e66f133a4a57c7cb9b1638fa75a6a0be301
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b82270fe4a5d231fc531fa202e0cacd80861a1a3b90c2053c272404c9eb8181
[INFO] running `Command { std: "docker" "start" "-a" "5b82270fe4a5d231fc531fa202e0cacd80861a1a3b90c2053c272404c9eb8181", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]     Checking async-ffi v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.60
[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]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 49 |     struct Dropper(());
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "5b82270fe4a5d231fc531fa202e0cacd80861a1a3b90c2053c272404c9eb8181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b82270fe4a5d231fc531fa202e0cacd80861a1a3b90c2053c272404c9eb8181", kill_on_drop: false }`
[INFO] [stdout] 5b82270fe4a5d231fc531fa202e0cacd80861a1a3b90c2053c272404c9eb8181
