[INFO] crate csv2json 0.3.1 is already in cache
[INFO] extracting crate csv2json 0.3.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/csv2json/0.3.1
[INFO] extracting crate csv2json 0.3.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/csv2json/0.3.1
[INFO] validating manifest of csv2json-0.3.1 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 csv2json-0.3.1 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 csv2json-0.3.1
[INFO] finished frobbing csv2json-0.3.1
[INFO] frobbed toml for csv2json-0.3.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/csv2json/0.3.1/Cargo.toml
[INFO] started frobbing csv2json-0.3.1
[INFO] finished frobbing csv2json-0.3.1
[INFO] frobbed toml for csv2json-0.3.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/csv2json/0.3.1/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 csv2json-0.3.1 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/csv2json/0.3.1:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 427485a0c776cce64b2e101ab508c974cf072f4c884dd5e3a992ac50c4613082
[INFO] running `"docker" "start" "-a" "427485a0c776cce64b2e101ab508c974cf072f4c884dd5e3a992ac50c4613082"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling csv2json v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/data/mod.rs:120:34
[INFO] [stderr]     |
[INFO] [stderr] 120 |             if let Value::Object(mut o2) = v2 {
[INFO] [stderr]     |                                  ----^^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `"docker" "inspect" "427485a0c776cce64b2e101ab508c974cf072f4c884dd5e3a992ac50c4613082"`
[INFO] running `"docker" "rm" "-f" "427485a0c776cce64b2e101ab508c974cf072f4c884dd5e3a992ac50c4613082"`
[INFO] [stdout] 427485a0c776cce64b2e101ab508c974cf072f4c884dd5e3a992ac50c4613082
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/csv2json/0.3.1:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5004b5378fc4f93c211034532bb22fee8acdfc6b4cb6355708e40495bccd2c09
[INFO] running `"docker" "start" "-a" "5004b5378fc4f93c211034532bb22fee8acdfc6b4cb6355708e40495bccd2c09"`
[INFO] [stderr]    Compiling csv2json v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/data/mod.rs:120:34
[INFO] [stderr]     |
[INFO] [stderr] 120 |             if let Value::Object(mut o2) = v2 {
[INFO] [stderr]     |                                  ----^^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `"docker" "inspect" "5004b5378fc4f93c211034532bb22fee8acdfc6b4cb6355708e40495bccd2c09"`
[INFO] running `"docker" "rm" "-f" "5004b5378fc4f93c211034532bb22fee8acdfc6b4cb6355708e40495bccd2c09"`
[INFO] [stdout] 5004b5378fc4f93c211034532bb22fee8acdfc6b4cb6355708e40495bccd2c09
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/csv2json/0.3.1:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] c2bf4c8593f84640dffc0c3ca08b6eb99ed173aac988c0e0a140dce3dd1b27a1
[INFO] running `"docker" "start" "-a" "c2bf4c8593f84640dffc0c3ca08b6eb99ed173aac988c0e0a140dce3dd1b27a1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/csv2json-7e4766dd9389ca17
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test data::tests::merge_values::it_merges_scalars_correctly ... ok
[INFO] [stdout] test data::tests::merge_values::it_merges_a_scalars_with_an_array_correctly ... ok
[INFO] [stdout] test data::tests::dimensional_converter::it_does_simple_json_conversion_with_no_separator ... ok
[INFO] [stdout] test data::tests::dimensional_converter::it_does_simple_json_conversion_when_seperator_not_found ... ok
[INFO] [stdout] test data::tests::dimensional_converter::it_creates_objects_on_separation ... ok
[INFO] [stdout] test data::tests::boolean_to_number::it_converts_false_to_zero ... ok
[INFO] [stdout] test data::tests::merge_values::it_merges_two_arrays_correctly ... ok
[INFO] [stdout] test data::tests::merge_values::it_merges_two_objects_correctly ... ok
[INFO] [stdout] test data::tests::boolean_to_number::it_converts_true_to_one ... ok
[INFO] [stdout] test data::tests::number_to_bool::it_converts_f64s ... ok
[INFO] [stdout] test data::tests::merge_values::it_merges_values_inside_objects ... ok
[INFO] [stdout] test data::tests::number_to_bool::it_converts_i64s ... ok
[INFO] [stdout] test data::tests::number_to_bool::it_converts_u64s ... ok
[INFO] [stdout] test cli::tests::it_has_the_correct_name ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c2bf4c8593f84640dffc0c3ca08b6eb99ed173aac988c0e0a140dce3dd1b27a1"`
[INFO] running `"docker" "rm" "-f" "c2bf4c8593f84640dffc0c3ca08b6eb99ed173aac988c0e0a140dce3dd1b27a1"`
[INFO] [stdout] c2bf4c8593f84640dffc0c3ca08b6eb99ed173aac988c0e0a140dce3dd1b27a1