[INFO] crate flatten_json 0.1.0 is already in cache
[INFO] extracting crate flatten_json 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/flatten_json/0.1.0
[INFO] extracting crate flatten_json 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/flatten_json/0.1.0
[INFO] validating manifest of 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 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 flatten_json-0.1.0
[INFO] finished frobbing flatten_json-0.1.0
[INFO] frobbed toml for flatten_json-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/flatten_json/0.1.0/Cargo.toml
[INFO] started frobbing flatten_json-0.1.0
[INFO] finished frobbing flatten_json-0.1.0
[INFO] frobbed toml for flatten_json-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/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 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/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] 5f88aac2603c2b7d716efd75c96ccf4b2dddd32c6e22b506eae09d6954cc3b14
[INFO] running `"docker" "start" "-a" "5f88aac2603c2b7d716efd75c96ccf4b2dddd32c6e22b506eae09d6954cc3b14"`
[INFO] [stderr]    Compiling flatten_json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "5f88aac2603c2b7d716efd75c96ccf4b2dddd32c6e22b506eae09d6954cc3b14"`
[INFO] running `"docker" "rm" "-f" "5f88aac2603c2b7d716efd75c96ccf4b2dddd32c6e22b506eae09d6954cc3b14"`
[INFO] [stdout] 5f88aac2603c2b7d716efd75c96ccf4b2dddd32c6e22b506eae09d6954cc3b14
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/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] 530a8233b6e894168beafa7f1deaa40c1f1817f261d77fed3171315ad3f153e9
[INFO] running `"docker" "start" "-a" "530a8233b6e894168beafa7f1deaa40c1f1817f261d77fed3171315ad3f153e9"`
[INFO] [stderr]    Compiling flatten_json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "530a8233b6e894168beafa7f1deaa40c1f1817f261d77fed3171315ad3f153e9"`
[INFO] running `"docker" "rm" "-f" "530a8233b6e894168beafa7f1deaa40c1f1817f261d77fed3171315ad3f153e9"`
[INFO] [stdout] 530a8233b6e894168beafa7f1deaa40c1f1817f261d77fed3171315ad3f153e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/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] 60ba2f49e0f4a87bffafeb6a5f3cc864bd647e5f56dd97109f7e2ab88529d7f4
[INFO] running `"docker" "start" "-a" "60ba2f49e0f4a87bffafeb6a5f3cc864bd647e5f56dd97109f7e2ab88529d7f4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flatten_json-49aaa786bf6b74b2
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]    Doc-tests flatten_json
[INFO] [stdout] test tests::test_custom_key ... ok
[INFO] [stdout] test tests::test_general_case ... ok
[INFO] [stdout] test tests::test_flat_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 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] running `"docker" "inspect" "60ba2f49e0f4a87bffafeb6a5f3cc864bd647e5f56dd97109f7e2ab88529d7f4"`
[INFO] running `"docker" "rm" "-f" "60ba2f49e0f4a87bffafeb6a5f3cc864bd647e5f56dd97109f7e2ab88529d7f4"`
[INFO] [stdout] 60ba2f49e0f4a87bffafeb6a5f3cc864bd647e5f56dd97109f7e2ab88529d7f4