[INFO] crate zkinterface 1.0.6 is already in cache
[INFO] extracting crate zkinterface 1.0.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/zkinterface/1.0.6
[INFO] extracting crate zkinterface 1.0.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zkinterface/1.0.6
[INFO] validating manifest of zkinterface-1.0.6 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zkinterface-1.0.6 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zkinterface-1.0.6
[INFO] finished frobbing zkinterface-1.0.6
[INFO] frobbed toml for zkinterface-1.0.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/zkinterface/1.0.6/Cargo.toml
[INFO] started frobbing zkinterface-1.0.6
[INFO] finished frobbing zkinterface-1.0.6
[INFO] frobbed toml for zkinterface-1.0.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zkinterface/1.0.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing zkinterface-1.0.6 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zkinterface/1.0.6:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 728ec5febc43026b0fe10f176c72298406ddf4138406da0e5c1709fd6c97b572
[INFO] running `"docker" "start" "-a" "728ec5febc43026b0fe10f176c72298406ddf4138406da0e5c1709fd6c97b572"`
[INFO] [stderr]    Compiling flatbuffers v0.5.0
[INFO] [stderr]    Compiling zkinterface v1.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cpp_gadget.rs:53:76
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn call_gadget_wrapper(circuit: &CircuitOwned) -> Result<Messages, Box<Error>> {
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `"docker" "inspect" "728ec5febc43026b0fe10f176c72298406ddf4138406da0e5c1709fd6c97b572"`
[INFO] running `"docker" "rm" "-f" "728ec5febc43026b0fe10f176c72298406ddf4138406da0e5c1709fd6c97b572"`
[INFO] [stdout] 728ec5febc43026b0fe10f176c72298406ddf4138406da0e5c1709fd6c97b572
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zkinterface/1.0.6:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1e7dbadc98c2970fa97cba9eaf039b84a653d5022d0d0ea805fd884bca6d0dcf
[INFO] running `"docker" "start" "-a" "1e7dbadc98c2970fa97cba9eaf039b84a653d5022d0d0ea805fd884bca6d0dcf"`
[INFO] [stderr]    Compiling zkinterface v1.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cpp_gadget.rs:53:76
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn call_gadget_wrapper(circuit: &CircuitOwned) -> Result<Messages, Box<Error>> {
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `"docker" "inspect" "1e7dbadc98c2970fa97cba9eaf039b84a653d5022d0d0ea805fd884bca6d0dcf"`
[INFO] running `"docker" "rm" "-f" "1e7dbadc98c2970fa97cba9eaf039b84a653d5022d0d0ea805fd884bca6d0dcf"`
[INFO] [stdout] 1e7dbadc98c2970fa97cba9eaf039b84a653d5022d0d0ea805fd884bca6d0dcf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zkinterface/1.0.6:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 6a01dd9d4ec157757d2b726725e87ab0b68ff3bc8d9333a6262f06b2d507674e
[INFO] running `"docker" "start" "-a" "6a01dd9d4ec157757d2b726725e87ab0b68ff3bc8d9333a6262f06b2d507674e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zkinterface-0b436a8ff670739f
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test reading::test_pretty_print_var ... ok
[INFO] [stdout] test examples::test_examples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests zkinterface
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6a01dd9d4ec157757d2b726725e87ab0b68ff3bc8d9333a6262f06b2d507674e"`
[INFO] running `"docker" "rm" "-f" "6a01dd9d4ec157757d2b726725e87ab0b68ff3bc8d9333a6262f06b2d507674e"`
[INFO] [stdout] 6a01dd9d4ec157757d2b726725e87ab0b68ff3bc8d9333a6262f06b2d507674e