[INFO] fetching crate flatten-json-object 0.6.1...
[INFO] testing flatten-json-object-0.6.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate flatten-json-object 0.6.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate flatten-json-object 0.6.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate flatten-json-object 0.6.1
[INFO] tweaked toml for crates.io crate flatten-json-object 0.6.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flatten-json-object 0.6.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flatten-json-object 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a55a1289508b6465acfa2fbef1155663c181c1e6ed1c17a8ea697cbdb1fbc55a
[INFO] running `Command { std: "docker" "start" "-a" "a55a1289508b6465acfa2fbef1155663c181c1e6ed1c17a8ea697cbdb1fbc55a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a55a1289508b6465acfa2fbef1155663c181c1e6ed1c17a8ea697cbdb1fbc55a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a55a1289508b6465acfa2fbef1155663c181c1e6ed1c17a8ea697cbdb1fbc55a", kill_on_drop: false }`
[INFO] [stdout] a55a1289508b6465acfa2fbef1155663c181c1e6ed1c17a8ea697cbdb1fbc55a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48a5cba3c18a2a5d1fc39b70398f1e60cee1773451d3cef595ccf7da2927165f
[INFO] running `Command { std: "docker" "start" "-a" "48a5cba3c18a2a5d1fc39b70398f1e60cee1773451d3cef595ccf7da2927165f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling flatten-json-object v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.62s
[INFO] running `Command { std: "docker" "inspect" "48a5cba3c18a2a5d1fc39b70398f1e60cee1773451d3cef595ccf7da2927165f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a5cba3c18a2a5d1fc39b70398f1e60cee1773451d3cef595ccf7da2927165f", kill_on_drop: false }`
[INFO] [stdout] 48a5cba3c18a2a5d1fc39b70398f1e60cee1773451d3cef595ccf7da2927165f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01d4b1b30c211da506956b5bf3b24ab8fb42cee4baf1405234eabb54afedf1f0
[INFO] running `Command { std: "docker" "start" "-a" "01d4b1b30c211da506956b5bf3b24ab8fb42cee4baf1405234eabb54afedf1f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling rstest v0.12.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling flatten-json-object v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.74s
[INFO] running `Command { std: "docker" "inspect" "01d4b1b30c211da506956b5bf3b24ab8fb42cee4baf1405234eabb54afedf1f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01d4b1b30c211da506956b5bf3b24ab8fb42cee4baf1405234eabb54afedf1f0", kill_on_drop: false }`
[INFO] [stdout] 01d4b1b30c211da506956b5bf3b24ab8fb42cee4baf1405234eabb54afedf1f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe8702730828d3380df7c36d00f44f9f4a8cb1c558331dc4af0cfa322d969236
[INFO] running `Command { std: "docker" "start" "-a" "fe8702730828d3380df7c36d00f44f9f4a8cb1c558331dc4af0cfa322d969236", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flatten_json_object-e2a2b80927f07770)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test tests::array_formatting_plain::case_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_1::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_1::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_plain::case_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_2::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_2::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_2::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_1::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_3::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_3::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_1::array_fmt_start_3::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_1::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_1::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_1::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_2::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_2::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_3::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_3::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::empty_array ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_3::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::empty_array_preserved ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_3::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::empty_complex_object ... ok
[INFO] [stdout] test tests::complex_nested_struct ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_3::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::empty_object ... ok
[INFO] [stdout] test tests::empty_object_preserved ... ok
[INFO] [stdout] test tests::array_formatting_plain::case_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_1::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_2::array_fmt_start_2::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_2::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_2::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_1::array_fmt_end_2 ... ok
[INFO] [stdout] test tests::object_with_plain_values::case_1 ... ok
[INFO] [stdout] test tests::empty_objects_and_arrays_preserved ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_3::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::object_with_plain_values::case_2 ... ok
[INFO] [stdout] test tests::object_with_plain_values::case_3 ... ok
[INFO] [stdout] test tests::overlapping_after_flattening_array ... ok
[INFO] [stdout] test tests::empty_string_as_key ... ok
[INFO] [stdout] test tests::nested_multiple_key_value ... ok
[INFO] [stdout] test tests::empty_string_as_key_multiple_times ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_1::array_fmt_end_3 ... ok
[INFO] [stdout] test tests::array_formatting_surrouded::key_separator_3::array_fmt_start_2::array_fmt_end_1 ... ok
[INFO] [stdout] test tests::empty_top_object::preserve_empty_objects_1 ... ok
[INFO] [stdout] test tests::empty_top_object::preserve_empty_objects_2 ... ok
[INFO] [stdout] test tests::first_level_must_be_an_object ... ok
[INFO] [stdout] test tests::nested_object_with_empty_array_and_string ... ok
[INFO] [stdout] test tests::nested_object_with_empty_object_and_string ... ok
[INFO] [stdout] test tests::nested_single_key_value ... ok
[INFO] [stdout] test tests::complex_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flatten_json_object
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fe8702730828d3380df7c36d00f44f9f4a8cb1c558331dc4af0cfa322d969236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe8702730828d3380df7c36d00f44f9f4a8cb1c558331dc4af0cfa322d969236", kill_on_drop: false }`
[INFO] [stdout] fe8702730828d3380df7c36d00f44f9f4a8cb1c558331dc4af0cfa322d969236