[INFO] fetching crate async 0.0.2...
[INFO] testing async-0.0.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate async 0.0.2 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate async 0.0.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async 0.0.2
[INFO] finished tweaking crates.io crate async 0.0.2
[INFO] tweaked toml for crates.io crate async 0.0.2 written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 199400bf56a24b762df620d752110ee95b24f6197ec408a2405589da7599353d
[INFO] running `Command { std: "docker" "start" "-a" "199400bf56a24b762df620d752110ee95b24f6197ec408a2405589da7599353d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "199400bf56a24b762df620d752110ee95b24f6197ec408a2405589da7599353d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "199400bf56a24b762df620d752110ee95b24f6197ec408a2405589da7599353d", kill_on_drop: false }`
[INFO] [stdout] 199400bf56a24b762df620d752110ee95b24f6197ec408a2405589da7599353d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd5d451c3489474cfd4d46439ce72f9739e24aacd6bfb7a18bd77f57f465b576
[INFO] running `Command { std: "docker" "start" "-a" "fd5d451c3489474cfd4d46439ce72f9739e24aacd6bfb7a18bd77f57f465b576", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling async v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find attribute `license` in this scope
[INFO] [stdout]  --> src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![license = "MIT"]
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn invoke(self, T) -> O;
[INFO] [stdout]    |                     ^ help: try naming the parameter or explicitly ignoring it: `_: T`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` implied by `#[warn(warnings)]`
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn execute<Co, C: Callback<T, Co>>(self, C);
[INFO] [stdout]    |                                              ^ help: try naming the parameter or explicitly ignoring it: `_: C`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'fn_traits'
[INFO] [stdout]   --> src/lib.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |         self.call_once((val,))
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async` due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fd5d451c3489474cfd4d46439ce72f9739e24aacd6bfb7a18bd77f57f465b576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5d451c3489474cfd4d46439ce72f9739e24aacd6bfb7a18bd77f57f465b576", kill_on_drop: false }`
[INFO] [stdout] fd5d451c3489474cfd4d46439ce72f9739e24aacd6bfb7a18bd77f57f465b576