[INFO] crate rust-flatten-json 0.1.0 is already in cache
[INFO] extracting crate rust-flatten-json 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/rust-flatten-json/0.1.0
[INFO] extracting crate rust-flatten-json 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rust-flatten-json/0.1.0
[INFO] validating manifest of rust-flatten-json-0.1.0 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 rust-flatten-json-0.1.0 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 rust-flatten-json-0.1.0
[INFO] finished frobbing rust-flatten-json-0.1.0
[INFO] frobbed toml for rust-flatten-json-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rust-flatten-json/0.1.0/Cargo.toml
[INFO] started frobbing rust-flatten-json-0.1.0
[INFO] finished frobbing rust-flatten-json-0.1.0
[INFO] frobbed toml for rust-flatten-json-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rust-flatten-json/0.1.0/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 rust-flatten-json-0.1.0 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/rust-flatten-json/0.1.0:/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] 3db9e128b9c135a95bcf7e682909974f215e950416d5c0652356808a0053d6f6
[INFO] running `"docker" "start" "-a" "3db9e128b9c135a95bcf7e682909974f215e950416d5c0652356808a0053d6f6"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling rust-flatten-json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `"docker" "inspect" "3db9e128b9c135a95bcf7e682909974f215e950416d5c0652356808a0053d6f6"`
[INFO] running `"docker" "rm" "-f" "3db9e128b9c135a95bcf7e682909974f215e950416d5c0652356808a0053d6f6"`
[INFO] [stdout] 3db9e128b9c135a95bcf7e682909974f215e950416d5c0652356808a0053d6f6
[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/rust-flatten-json/0.1.0:/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] deb3b8f73419bce4c759d9b90ff2b9fcad29a6377f8aa044d368c206c203a12f
[INFO] running `"docker" "start" "-a" "deb3b8f73419bce4c759d9b90ff2b9fcad29a6377f8aa044d368c206c203a12f"`
[INFO] [stderr]    Compiling rust-flatten-json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "deb3b8f73419bce4c759d9b90ff2b9fcad29a6377f8aa044d368c206c203a12f"`
[INFO] running `"docker" "rm" "-f" "deb3b8f73419bce4c759d9b90ff2b9fcad29a6377f8aa044d368c206c203a12f"`
[INFO] [stdout] deb3b8f73419bce4c759d9b90ff2b9fcad29a6377f8aa044d368c206c203a12f
[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/rust-flatten-json/0.1.0:/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"`
[INFO] [stdout] 58c9956be9deeb5a7b65ded8a949dc8ba26f0750e3a5ce3ca661ecedefce397b
[INFO] running `"docker" "start" "-a" "58c9956be9deeb5a7b65ded8a949dc8ba26f0750e3a5ce3ca661ecedefce397b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flatten_json-4cd545c3766facb8
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::multi_key_value ... ok
[INFO] [stdout] test tests::complex_nested_struct ... ok
[INFO] [stdout] test tests::nested_array ... ok
[INFO] [stdout] test tests::nested_obj_array ... ok
[INFO] [stdout] test tests::nested_single_key_value ... ok
[INFO] [stdout] test tests::single_int_as_str_no_infer_type_value ... ok
[INFO] [stdout] test tests::single_bool_as_str_value ... ok
[INFO] [stdout] test tests::nested_multiple_key_value ... ok
[INFO] [stdout] test tests::single_float_as_str_value ... ok
[INFO] [stdout] test tests::single_key_value ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/from_stdin-79e98a84df3e1b59
[INFO] [stdout] test tests::top_level_array ... ok
[INFO] [stdout] test tests::single_int_value ... ok
[INFO] [stdout] test tests::single_int_as_str_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [stderr]    Doc-tests flatten_json
[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" "58c9956be9deeb5a7b65ded8a949dc8ba26f0750e3a5ce3ca661ecedefce397b"`
[INFO] running `"docker" "rm" "-f" "58c9956be9deeb5a7b65ded8a949dc8ba26f0750e3a5ce3ca661ecedefce397b"`
[INFO] [stdout] 58c9956be9deeb5a7b65ded8a949dc8ba26f0750e3a5ce3ca661ecedefce397b