[INFO] fetching crate json_utils_2024 0.5.2...
[INFO] testing json_utils_2024-0.5.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate json_utils_2024 0.5.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate json_utils_2024 0.5.2
[INFO] finished tweaking crates.io crate json_utils_2024 0.5.2
[INFO] tweaked toml for crates.io crate json_utils_2024 0.5.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json_utils_2024 0.5.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d66b3b7da5cd20000f3847f2dd1dc6831dba0483e0f4369b155705dd2ad086d4
[INFO] running `Command { std: "docker" "start" "-a" "d66b3b7da5cd20000f3847f2dd1dc6831dba0483e0f4369b155705dd2ad086d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d66b3b7da5cd20000f3847f2dd1dc6831dba0483e0f4369b155705dd2ad086d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d66b3b7da5cd20000f3847f2dd1dc6831dba0483e0f4369b155705dd2ad086d4", kill_on_drop: false }`
[INFO] [stdout] d66b3b7da5cd20000f3847f2dd1dc6831dba0483e0f4369b155705dd2ad086d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4a50ed59c7f7098cb4c602eccd36100646d82121a48bf9978af5eb1efd48c8f7
[INFO] running `Command { std: "docker" "start" "-a" "4a50ed59c7f7098cb4c602eccd36100646d82121a48bf9978af5eb1efd48c8f7", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)` has the same output filename as the lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/deps/liblibjsonutils-be84759d7a5ab1cf.rlib
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)` has the same output filename as the lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/liblibjsonutils.rlib
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]    Compiling json_utils_2024 v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "4a50ed59c7f7098cb4c602eccd36100646d82121a48bf9978af5eb1efd48c8f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a50ed59c7f7098cb4c602eccd36100646d82121a48bf9978af5eb1efd48c8f7", kill_on_drop: false }`
[INFO] [stdout] 4a50ed59c7f7098cb4c602eccd36100646d82121a48bf9978af5eb1efd48c8f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6a8168b49c0c7d4f21bc4956cac2d91519d0e2ef7995fe452eeafae44688c758
[INFO] running `Command { std: "docker" "start" "-a" "6a8168b49c0c7d4f21bc4956cac2d91519d0e2ef7995fe452eeafae44688c758", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)` has the same output filename as the lib target `libjsonutils` in package `json_utils_2024 v0.5.2 (/opt/rustwide/workdir)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/deps/liblibjsonutils-be84759d7a5ab1cf.rlib
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] 
[INFO] [stderr] thread 'main' (1) panicked at src/tools/cargo/src/cargo/core/compiler/fingerprint/mod.rs:1177:13:
[INFO] [stderr] assertion failed: mtimes.insert(output.clone(), mtime).is_none()
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x6538975ed6e3 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x6538975ed6e3 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x6538975ed6e3 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]    3:     0x6538975ed6e3 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]    4:     0x6538970d367f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]    5:     0x6538970d367f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]    6:     0x6538975ab961 - std::io::default_write_fmt::h1ecb8c7cfa7da481
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x6538975ab961 - std::io::Write::write_fmt::h051fe4a9e4fdbf48
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]    8:     0x6538975bcf12 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]    9:     0x6538975c387e - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stderr]   10:     0x6538975c33bf - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:328:9
[INFO] [stderr]   11:     0x6538975c3c65 - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:834:13
[INFO] [stderr]   12:     0x6538975c3a36 - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:700:13
[INFO] [stderr]   13:     0x6538975bd049 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]   14:     0x65389759e36d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stderr]   15:     0x6538970dda10 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stderr]   16:     0x6538970dd9ec - core::panicking::panic::h355c5fec13755e30
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:145:5
[INFO] [stderr]   17:     0x653896b7d1e3 - <cargo[30aa16d6f7bee3a9]::core::compiler::fingerprint::Fingerprint>::check_filesystem
[INFO] [stderr]   18:     0x653896db5ccf - cargo[30aa16d6f7bee3a9]::core::compiler::fingerprint::calculate
[INFO] [stderr]   19:     0x653896daba79 - cargo[30aa16d6f7bee3a9]::core::compiler::fingerprint::prepare_target
[INFO] [stderr]   20:     0x653896d1a8f0 - cargo[30aa16d6f7bee3a9]::core::compiler::compile
[INFO] [stderr]   21:     0x653896d1c19c - cargo[30aa16d6f7bee3a9]::core::compiler::compile
[INFO] [stderr]   22:     0x653896b11eb1 - <cargo[30aa16d6f7bee3a9]::core::compiler::build_runner::BuildRunner>::compile
[INFO] [stderr]   23:     0x653896c70e7f - cargo[30aa16d6f7bee3a9]::ops::cargo_compile::compile_ws
[INFO] [stderr]   24:     0x653896c74022 - cargo[30aa16d6f7bee3a9]::ops::cargo_compile::compile_with_exec
[INFO] [stderr]   25:     0x653896c7a1fb - cargo[30aa16d6f7bee3a9]::ops::cargo_compile::compile
[INFO] [stderr]   26:     0x653896c5438f - cargo[30aa16d6f7bee3a9]::ops::cargo_test::compile_tests
[INFO] [stderr]   27:     0x653896c55767 - cargo[30aa16d6f7bee3a9]::ops::cargo_test::run_tests
[INFO] [stderr]   28:     0x6538970043d2 - cargo[34293319f9b55667]::commands::test::exec
[INFO] [stderr]   29:     0x653896fac8da - <cargo[34293319f9b55667]::cli::Exec>::exec
[INFO] [stderr]   30:     0x653896fa9db8 - cargo[34293319f9b55667]::main
[INFO] [stderr]   31:     0x653896f84693 - std[964350b2783e405f]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]   32:     0x653896f97b89 - std[964350b2783e405f]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]   33:     0x6538975ad631 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4967fb77e0dfb65c
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:287:21
[INFO] [stderr]   34:     0x6538975ad631 - std::panicking::catch_unwind::do_call::hf7e87675c3e14c23
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stderr]   35:     0x6538975ad631 - std::panicking::catch_unwind::h26f0e342004b5114
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stderr]   36:     0x6538975ad631 - std::panic::catch_unwind::h9ee33ca17775d897
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stderr]   37:     0x6538975ad631 - std::rt::lang_start_internal::{{closure}}::h243ba3495fa13cf8
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:175:24
[INFO] [stderr]   38:     0x6538975ad631 - std::panicking::catch_unwind::do_call::h819db0a7788e7259
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stderr]   39:     0x6538975ad631 - std::panicking::catch_unwind::h23e08fb4a7b9f405
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stderr]   40:     0x6538975ad631 - std::panic::catch_unwind::h7ca3d9eabb6135ff
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stderr]   41:     0x6538975ad631 - std::rt::lang_start_internal::h06ad7395f4fda8d7
[INFO] [stderr]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:171:5
[INFO] [stderr]   42:     0x6538970476b5 - main
[INFO] [stderr]   43:     0x773f475cd1ca - <unknown>
[INFO] [stderr]   44:     0x773f475cd28b - __libc_start_main
[INFO] [stderr]   45:     0x6538965f5be9 - <unknown>
[INFO] [stderr]   46:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "6a8168b49c0c7d4f21bc4956cac2d91519d0e2ef7995fe452eeafae44688c758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a8168b49c0c7d4f21bc4956cac2d91519d0e2ef7995fe452eeafae44688c758", kill_on_drop: false }`
[INFO] [stdout] 6a8168b49c0c7d4f21bc4956cac2d91519d0e2ef7995fe452eeafae44688c758
