[INFO] crate mockiato 0.9.1 is already in cache
[INFO] checking mockiato-0.9.1 against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] extracting crate mockiato 0.9.1 into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate mockiato 0.9.1 on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mockiato 0.9.1
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate mockiato 0.9.1
[INFO] tweaked toml for crates.io crate mockiato 0.9.1 written to work/builds/worker-3/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a7e23a4d679bb6e3828b5eed95a27fabd4da33dab85c2662170bc38284e30deb
[INFO] running `"docker" "start" "-a" "a7e23a4d679bb6e3828b5eed95a27fabd4da33dab85c2662170bc38284e30deb"`
[INFO] [stderr]     Checking nameof v1.1.0
[INFO] [stderr]    Compiling mockiato-codegen v0.9.4
[INFO] [stderr]    Compiling mockiato v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr] error[E0601]: `main` function not found in crate `downcasting`
[INFO] [stderr]   --> examples/downcasting.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr] 5  | / #[cfg(test)]
[INFO] [stderr] 6  | | use mockiato::mockable;
[INFO] [stderr] 7  | | use std::any::Any;
[INFO] [stderr] 8  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     dbg!(&concrete_behavior);
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/downcasting.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `mockiato`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a7e23a4d679bb6e3828b5eed95a27fabd4da33dab85c2662170bc38284e30deb"`
[INFO] running `"docker" "rm" "-f" "a7e23a4d679bb6e3828b5eed95a27fabd4da33dab85c2662170bc38284e30deb"`
[INFO] [stdout] a7e23a4d679bb6e3828b5eed95a27fabd4da33dab85c2662170bc38284e30deb