[INFO] fetching crate mockiato 0.8.0...
[INFO] extracting crate mockiato 0.8.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mockiato/0.8.0
[INFO] extracting crate mockiato 0.8.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/mockiato/0.8.0
[INFO] validating manifest of mockiato-0.8.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mockiato-0.8.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mockiato-0.8.0
[INFO] removed 1 missing examples
[INFO] finished frobbing mockiato-0.8.0
[INFO] frobbed toml for mockiato-0.8.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mockiato/0.8.0/Cargo.toml
[INFO] started frobbing mockiato-0.8.0
[INFO] removed 1 missing examples
[INFO] finished frobbing mockiato-0.8.0
[INFO] frobbed toml for mockiato-0.8.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/mockiato/0.8.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mockiato-0.8.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/mockiato/0.8.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ea380ecba68650d4f3132ccc6cf585e3574e96400c5f083b9ff46570475a0671
[INFO] running `"docker" "start" "-a" "ea380ecba68650d4f3132ccc6cf585e3574e96400c5f083b9ff46570475a0671"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking nameof v1.1.0
[INFO] [stderr]     Checking nearly_eq v0.2.4
[INFO] [stderr]    Compiling mockiato-codegen v0.8.0
[INFO] [stderr]    Compiling mockiato v0.8.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `downcasting`
[INFO] [stderr]   |
[INFO] [stderr]   = note: 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" "ea380ecba68650d4f3132ccc6cf585e3574e96400c5f083b9ff46570475a0671"`
[INFO] running `"docker" "rm" "-f" "ea380ecba68650d4f3132ccc6cf585e3574e96400c5f083b9ff46570475a0671"`
[INFO] [stdout] ea380ecba68650d4f3132ccc6cf585e3574e96400c5f083b9ff46570475a0671