[INFO] fetching crate fast_async_trait 0.1.1...
[INFO] testing fast_async_trait-0.1.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate fast_async_trait 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate fast_async_trait 0.1.1
[INFO] finished tweaking crates.io crate fast_async_trait 0.1.1
[INFO] tweaked toml for crates.io crate fast_async_trait 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fast_async_trait 0.1.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive-syn-parse v0.1.5
[INFO] [stderr]   Downloaded fast_async_trait_proc v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e968fca1caf9ace5a13be71c99fe0d4c4a9b7ff9066d9def53427b5b39510235
[INFO] running `Command { std: "docker" "start" "-a" "e968fca1caf9ace5a13be71c99fe0d4c4a9b7ff9066d9def53427b5b39510235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e968fca1caf9ace5a13be71c99fe0d4c4a9b7ff9066d9def53427b5b39510235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e968fca1caf9ace5a13be71c99fe0d4c4a9b7ff9066d9def53427b5b39510235", kill_on_drop: false }`
[INFO] [stdout] e968fca1caf9ace5a13be71c99fe0d4c4a9b7ff9066d9def53427b5b39510235
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bfda2c637ad3cecb8cc2a9d7de68277ad3b9dd004168e726b84b4ad4e3b536b
[INFO] running `Command { std: "docker" "start" "-a" "3bfda2c637ad3cecb8cc2a9d7de68277ad3b9dd004168e726b84b4ad4e3b536b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling fast_async_trait_proc v0.1.1
[INFO] [stderr]    Compiling fast_async_trait v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: functions with the "rust-call" ABI must take a single non-self tuple argument
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     extern "rust-call" fn call_once(self, args: Self::Args) -> Self::Output;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the nightly-only, unstable trait `std::marker::Tuple` is not implemented for `<Self as FnOnceHelper>::Args`
[INFO] [stdout]    |
[INFO] [stdout] help: consider further restricting the associated type
[INFO] [stdout]    |
[INFO] [stdout] 11 |     extern "rust-call" fn call_once(self, args: Self::Args) -> Self::Output where <Self as FnOnceHelper>::Args: std::marker::Tuple;
[INFO] [stdout]    |                                                                             ++++++++++++++++++++++++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fast_async_trait` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3bfda2c637ad3cecb8cc2a9d7de68277ad3b9dd004168e726b84b4ad4e3b536b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bfda2c637ad3cecb8cc2a9d7de68277ad3b9dd004168e726b84b4ad4e3b536b", kill_on_drop: false }`
[INFO] [stdout] 3bfda2c637ad3cecb8cc2a9d7de68277ad3b9dd004168e726b84b4ad4e3b536b