[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 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4a72542b6f866dd3c089ce811f834c1662e40fbe369f7c376f6aa2c4217338ba
[INFO] running `"docker" "start" "-a" "4a72542b6f866dd3c089ce811f834c1662e40fbe369f7c376f6aa2c4217338ba"`
[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 2.10s
[INFO] running `"docker" "inspect" "4a72542b6f866dd3c089ce811f834c1662e40fbe369f7c376f6aa2c4217338ba"`
[INFO] running `"docker" "rm" "-f" "4a72542b6f866dd3c089ce811f834c1662e40fbe369f7c376f6aa2c4217338ba"`
[INFO] [stdout] 4a72542b6f866dd3c089ce811f834c1662e40fbe369f7c376f6aa2c4217338ba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4c5304bc2e9d8ec166d6e4b6e0621b696cbe94b3f1916faf253f6aaa024ad44d
[INFO] running `"docker" "start" "-a" "4c5304bc2e9d8ec166d6e4b6e0621b696cbe94b3f1916faf253f6aaa024ad44d"`
[INFO] [stderr]    Compiling rust-flatten-json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "4c5304bc2e9d8ec166d6e4b6e0621b696cbe94b3f1916faf253f6aaa024ad44d"`
[INFO] running `"docker" "rm" "-f" "4c5304bc2e9d8ec166d6e4b6e0621b696cbe94b3f1916faf253f6aaa024ad44d"`
[INFO] [stdout] 4c5304bc2e9d8ec166d6e4b6e0621b696cbe94b3f1916faf253f6aaa024ad44d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7bbc74b24f7967788ddf79089416b57c645c640353958cdcbad3a1e821541f93
[INFO] running `"docker" "start" "-a" "7bbc74b24f7967788ddf79089416b57c645c640353958cdcbad3a1e821541f93"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flatten_json-6e0247bd65732c95
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::nested_multiple_key_value ... ok
[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_single_key_value ... ok
[INFO] [stdout] test tests::single_int_as_str_no_infer_type_value ... ok
[INFO] [stdout] test tests::nested_obj_array ... ok
[INFO] [stdout] test tests::single_bool_as_str_value ... ok
[INFO] [stdout] test tests::single_float_as_str_value ... ok
[INFO] [stdout] test tests::single_int_as_str_value ... ok
[INFO] [stdout] test tests::single_key_value ... ok
[INFO] [stdout] test tests::top_level_array ... ok
[INFO] [stdout] test tests::single_int_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/from_stdin-43192c153f381ce7
[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" "7bbc74b24f7967788ddf79089416b57c645c640353958cdcbad3a1e821541f93"`
[INFO] running `"docker" "rm" "-f" "7bbc74b24f7967788ddf79089416b57c645c640353958cdcbad3a1e821541f93"`
[INFO] [stdout] 7bbc74b24f7967788ddf79089416b57c645c640353958cdcbad3a1e821541f93