[INFO] crate mockiato 0.9.0 is already in cache
[INFO] extracting crate mockiato 0.9.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/mockiato/0.9.0
[INFO] extracting crate mockiato 0.9.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mockiato/0.9.0
[INFO] validating manifest of mockiato-0.9.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mockiato-0.9.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mockiato-0.9.0
[INFO] removed 1 missing examples
[INFO] finished frobbing mockiato-0.9.0
[INFO] frobbed toml for mockiato-0.9.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mockiato/0.9.0/Cargo.toml
[INFO] started frobbing mockiato-0.9.0
[INFO] removed 1 missing examples
[INFO] finished frobbing mockiato-0.9.0
[INFO] frobbed toml for mockiato-0.9.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mockiato/0.9.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mockiato-0.9.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mockiato/0.9.0:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 59ad1e86c783d3c6d551160ff38530a99b26573f02c8accc4ebd8b877981343f
[INFO] running `"docker" "start" "-a" "59ad1e86c783d3c6d551160ff38530a99b26573f02c8accc4ebd8b877981343f"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling nameof v1.1.0
[INFO] [stderr]    Compiling nearly_eq v0.2.4
[INFO] [stderr]    Compiling mockiato-codegen v0.9.0
[INFO] [stderr]    Compiling mockiato v0.9.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.70s
[INFO] running `"docker" "inspect" "59ad1e86c783d3c6d551160ff38530a99b26573f02c8accc4ebd8b877981343f"`
[INFO] running `"docker" "rm" "-f" "59ad1e86c783d3c6d551160ff38530a99b26573f02c8accc4ebd8b877981343f"`
[INFO] [stdout] 59ad1e86c783d3c6d551160ff38530a99b26573f02c8accc4ebd8b877981343f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mockiato/0.9.0:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0d88f0326d10f44ded43e78d52ce968283790c3bfa00a411608667670dfa028b
[INFO] running `"docker" "start" "-a" "0d88f0326d10f44ded43e78d52ce968283790c3bfa00a411608667670dfa028b"`
[INFO] [stderr]    Compiling mockiato v0.9.0 (/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" "0d88f0326d10f44ded43e78d52ce968283790c3bfa00a411608667670dfa028b"`
[INFO] running `"docker" "rm" "-f" "0d88f0326d10f44ded43e78d52ce968283790c3bfa00a411608667670dfa028b"`
[INFO] [stdout] 0d88f0326d10f44ded43e78d52ce968283790c3bfa00a411608667670dfa028b