[INFO] updating cached repository felipesere/jsondiffers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/felipesere/jsondiffers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/jsondiffers" "work/ex/beta-1.38-1/sources/1.37.0/gh/felipesere/jsondiffers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/felipesere/jsondiffers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/jsondiffers" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f18a55ac78b88b64ab7bd70c611d45d0351a0328
[INFO] sha for GitHub repo felipesere/jsondiffers: f18a55ac78b88b64ab7bd70c611d45d0351a0328
[INFO] validating manifest of felipesere/jsondiffers 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 felipesere/jsondiffers 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 felipesere/jsondiffers
[INFO] finished frobbing felipesere/jsondiffers
[INFO] frobbed toml for felipesere/jsondiffers written to work/ex/beta-1.38-1/sources/1.37.0/gh/felipesere/jsondiffers/Cargo.toml
[INFO] started frobbing felipesere/jsondiffers
[INFO] finished frobbing felipesere/jsondiffers
[INFO] frobbed toml for felipesere/jsondiffers written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers/Cargo.toml
[INFO] crate felipesere/jsondiffers already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing felipesere/jsondiffers 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-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers:/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] 0ff9cc29ea6590db6a24f265395a2ccac238a715a57a423ce59c93930f309a7c
[INFO] running `"docker" "start" "-a" "0ff9cc29ea6590db6a24f265395a2ccac238a715a57a423ce59c93930f309a7c"`
[INFO] [stderr]    Compiling jsondiffers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `stringify`
[INFO] [stderr]  --> src/printer.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn stringify(val: Value) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print`
[INFO] [stderr]   --> src/printer.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn print(output: &mut String, value: Value) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_object`
[INFO] [stderr]   --> src/printer.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn print_object(output: &mut String, object: Map<String, Value>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_array`
[INFO] [stderr]   --> src/printer.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn print_array(output: &mut String, values: Vec<Value>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string`
[INFO] [stderr]   --> src/printer.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn string(output: &mut String, value: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "0ff9cc29ea6590db6a24f265395a2ccac238a715a57a423ce59c93930f309a7c"`
[INFO] running `"docker" "rm" "-f" "0ff9cc29ea6590db6a24f265395a2ccac238a715a57a423ce59c93930f309a7c"`
[INFO] [stdout] 0ff9cc29ea6590db6a24f265395a2ccac238a715a57a423ce59c93930f309a7c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers:/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] ff84de17767727eda7012be5387f6ebadf9b78f83e3c16c8b067fd681af3b085
[INFO] running `"docker" "start" "-a" "ff84de17767727eda7012be5387f6ebadf9b78f83e3c16c8b067fd681af3b085"`
[INFO] [stderr]    Compiling jsondiffers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `"docker" "inspect" "ff84de17767727eda7012be5387f6ebadf9b78f83e3c16c8b067fd681af3b085"`
[INFO] running `"docker" "rm" "-f" "ff84de17767727eda7012be5387f6ebadf9b78f83e3c16c8b067fd681af3b085"`
[INFO] [stdout] ff84de17767727eda7012be5387f6ebadf9b78f83e3c16c8b067fd681af3b085
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/felipesere/jsondiffers:/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] ac51ea7f8a8866a14ba940250a3ce065c5a750ad9cd31d75911943014e98f89e
[INFO] running `"docker" "start" "-a" "ac51ea7f8a8866a14ba940250a3ce065c5a750ad9cd31d75911943014e98f89e"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 18 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/jsondiffers-ed77f0bd1b02d497
[INFO] [stdout] test diff::tests::object_with_value_compared_with_null ... ok
[INFO] [stdout] test diff::tests::object_with_different_string_values ... ok
[INFO] [stdout] test diff::tests::null_is_not_different_from_itself ... ok
[INFO] [stdout] test diff::tests::difference_between_booleans ... ok
[INFO] [stdout] test diff::tests::array_with_surplus_value ... ok
[INFO] [stdout] test diff::tests::second_object_has_missing_elements ... ok
[INFO] [stdout] test diff::tests::second_object_has_surplus_elements ... ok
[INFO] [stdout] test diff::tests::array_with_missing_value ... ok
[INFO] [stdout] test printer::tests::complex_object ... ok
[INFO] [stdout] test printer::tests::prints_a_boolean ... ok
[INFO] [stdout] test printer::tests::prints_a_number ... ok
[INFO] [stdout] test printer::tests::prints_a_string ... ok
[INFO] [stdout] test printer::tests::prints_an_array ... ok
[INFO] [stdout] test printer::tests::prints_an_object ... ok
[INFO] [stdout] test printer::tests::prints_null ... ok
[INFO] [stdout] test printer::tests::prints_object_with_key_value_pair ... ok
[INFO] [stdout] test diff::tests::same_boolean_value ... ok
[INFO] [stdout] test diff::tests::difference_between_numbers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ac51ea7f8a8866a14ba940250a3ce065c5a750ad9cd31d75911943014e98f89e"`
[INFO] running `"docker" "rm" "-f" "ac51ea7f8a8866a14ba940250a3ce065c5a750ad9cd31d75911943014e98f89e"`
[INFO] [stdout] ac51ea7f8a8866a14ba940250a3ce065c5a750ad9cd31d75911943014e98f89e