[INFO] fetching crate async_t 0.6.0...
[INFO] testing async_t-0.6.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate async_t 0.6.0 into /workspace/builds/worker-96/source
[INFO] validating manifest of crates.io crate async_t 0.6.0 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_t 0.6.0
[INFO] finished tweaking crates.io crate async_t 0.6.0
[INFO] tweaked toml for crates.io crate async_t 0.6.0 written to /workspace/builds/worker-96/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async_t_internal v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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] 176b6c66e7b40abc042bc39cc76938bb43c08d7f9479d5dcfd0a45e5c425d624
[INFO] running `Command { std: "docker" "start" "-a" "176b6c66e7b40abc042bc39cc76938bb43c08d7f9479d5dcfd0a45e5c425d624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "176b6c66e7b40abc042bc39cc76938bb43c08d7f9479d5dcfd0a45e5c425d624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176b6c66e7b40abc042bc39cc76938bb43c08d7f9479d5dcfd0a45e5c425d624", kill_on_drop: false }`
[INFO] [stdout] 176b6c66e7b40abc042bc39cc76938bb43c08d7f9479d5dcfd0a45e5c425d624
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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] a22ef3832aa8849ec2c5d55b5c9007ec3a8ac816af3fa35e4b400dd8b551fa37
[INFO] running `Command { std: "docker" "start" "-a" "a22ef3832aa8849ec2c5d55b5c9007ec3a8ac816af3fa35e4b400dd8b551fa37", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling async_t_internal v0.6.0
[INFO] [stdout] error[E0599]: no variant or associated item named `__TestExhaustive` found for enum `syn::Type` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async_t_internal-0.6.0/src/impl_trait/impl_trait.rs:143:15
[INFO] [stdout]     |
[INFO] [stdout] 143 |         Type::__TestExhaustive(_) => abort!(ty.span(), "please report this bug"),
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^ variant or associated item not found in `syn::Type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `__TestExhaustive` found for enum `syn::Type` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/async_t_internal-0.6.0/src/impl_trait/implementation.rs:152:15
[INFO] [stdout]     |
[INFO] [stdout] 152 |         Type::__TestExhaustive(_) => abort!(ty.span(), "please report this bug"),
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^ variant or associated item not found in `syn::Type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async_t_internal` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a22ef3832aa8849ec2c5d55b5c9007ec3a8ac816af3fa35e4b400dd8b551fa37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22ef3832aa8849ec2c5d55b5c9007ec3a8ac816af3fa35e4b400dd8b551fa37", kill_on_drop: false }`
[INFO] [stdout] a22ef3832aa8849ec2c5d55b5c9007ec3a8ac816af3fa35e4b400dd8b551fa37