[INFO] fetching crate json_utils_2024 0.5.2...
[INFO] testing json_utils_2024-0.5.2 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate json_utils_2024 0.5.2 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json_utils_2024 0.5.2 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39a02a3511c1bd87fd7b034b8bf94c8159246c7acdbe06221128c2f321dbd8a2
[INFO] running `Command { std: "docker" "start" "-a" "39a02a3511c1bd87fd7b034b8bf94c8159246c7acdbe06221128c2f321dbd8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39a02a3511c1bd87fd7b034b8bf94c8159246c7acdbe06221128c2f321dbd8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a02a3511c1bd87fd7b034b8bf94c8159246c7acdbe06221128c2f321dbd8a2", kill_on_drop: false }`
[INFO] [stdout] 39a02a3511c1bd87fd7b034b8bf94c8159246c7acdbe06221128c2f321dbd8a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c86f5a61341e2ad1ac0f506667d3f7ecca29c2784a8b84ba087e17b6c295707e
[INFO] running `Command { std: "docker" "start" "-a" "c86f5a61341e2ad1ac0f506667d3f7ecca29c2784a8b84ba087e17b6c295707e", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/deps/liblibjsonutils-ba0b11c68eb1a2d5.rlib
[INFO] [stderr]   |
[INFO] [stderr]   = note: 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]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/liblibjsonutils.rlib
[INFO] [stderr]   |
[INFO] [stderr]   = note: 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]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling json_utils_2024 v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.75s
[INFO] running `Command { std: "docker" "inspect" "c86f5a61341e2ad1ac0f506667d3f7ecca29c2784a8b84ba087e17b6c295707e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c86f5a61341e2ad1ac0f506667d3f7ecca29c2784a8b84ba087e17b6c295707e", kill_on_drop: false }`
[INFO] [stdout] c86f5a61341e2ad1ac0f506667d3f7ecca29c2784a8b84ba087e17b6c295707e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6820c8052817a76125f99279dc8ff613ccd908625753e8161bcd19a886672f3
[INFO] running `Command { std: "docker" "start" "-a" "a6820c8052817a76125f99279dc8ff613ccd908625753e8161bcd19a886672f3", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision at /opt/rustwide/target/debug/deps/liblibjsonutils-ba0b11c68eb1a2d5.rlib
[INFO] [stderr]   |
[INFO] [stderr]   = note: 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]   = note: this may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>
[INFO] [stderr]   = help: consider changing their names to be unique or compiling them separately
[INFO] [stderr] 
[INFO] [stderr] thread 'main' (1) panicked at src/tools/cargo/src/cargo/core/compiler/fingerprint/mod.rs:1267:13:
[INFO] [stderr] assertion failed: mtimes.insert(output.clone(), mtime).is_none()
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x65285474674b - std[e72de78501789eb0]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x65285474674b - std[e72de78501789eb0]::backtrace_rs::backtrace::trace_unsynchronized::<std[e72de78501789eb0]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x65285474674b - std[e72de78501789eb0]::sys::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x65285474674b - <<std[e72de78501789eb0]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6aaeda2c7ad07a48]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x652854241f7a - <core[6aaeda2c7ad07a48]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x652854241f7a - core[6aaeda2c7ad07a48]::fmt::write
[INFO] [stderr]    6:     0x6528547535a6 - std[e72de78501789eb0]::io::default_write_fmt::<std[e72de78501789eb0]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x6528547535a6 - <std[e72de78501789eb0]::sys::stdio::unix::Stderr as std[e72de78501789eb0]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x65285471ccc0 - <std[e72de78501789eb0]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x65285471ccc0 - std[e72de78501789eb0]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x65285473a806 - std[e72de78501789eb0]::panicking::default_hook
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x65285473aa9b - std[e72de78501789eb0]::panicking::panic_with_hook
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:825:13
[INFO] [stderr]   12:     0x65285471cdaa - std[e72de78501789eb0]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:691:13
[INFO] [stderr]   13:     0x652854713b59 - std[e72de78501789eb0]::sys::backtrace::__rust_end_short_backtrace::<std[e72de78501789eb0]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   14:     0x65285471e63d - __rustc[78a4cf188af856fc]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:689:5
[INFO] [stderr]   15:     0x6528542426dc - core[6aaeda2c7ad07a48]::panicking::panic_fmt
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/panicking.rs:80:14
[INFO] [stderr]   16:     0x6528542426a2 - core[6aaeda2c7ad07a48]::panicking::panic
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/panicking.rs:150:5
[INFO] [stderr]   17:     0x652853ca9577 - <cargo[10127650f70e6521]::core::compiler::fingerprint::Fingerprint>::check_filesystem
[INFO] [stderr]   18:     0x652853ef7f32 - cargo[10127650f70e6521]::core::compiler::fingerprint::calculate
[INFO] [stderr]   19:     0x652853eedac9 - cargo[10127650f70e6521]::core::compiler::fingerprint::prepare_target
[INFO] [stderr]   20:     0x652853e65b53 - cargo[10127650f70e6521]::core::compiler::compile
[INFO] [stderr]   21:     0x652853e65aa3 - cargo[10127650f70e6521]::core::compiler::compile
[INFO] [stderr]   22:     0x652853c35fe8 - <cargo[10127650f70e6521]::core::compiler::build_runner::BuildRunner>::compile
[INFO] [stderr]   23:     0x652853da7280 - cargo[10127650f70e6521]::ops::cargo_compile::compile_ws
[INFO] [stderr]   24:     0x652853dabc41 - cargo[10127650f70e6521]::ops::cargo_compile::compile_with_exec
[INFO] [stderr]   25:     0x652853db303b - cargo[10127650f70e6521]::ops::cargo_compile::compile
[INFO] [stderr]   26:     0x652853d82d41 - cargo[10127650f70e6521]::ops::cargo_test::run_tests
[INFO] [stderr]   27:     0x652854171897 - cargo[5f726ba85696488a]::commands::test::exec
[INFO] [stderr]   28:     0x652854113d3a - <cargo[5f726ba85696488a]::cli::Exec>::exec
[INFO] [stderr]   29:     0x6528541114e6 - cargo[5f726ba85696488a]::main
[INFO] [stderr]   30:     0x6528540eb0d3 - std[e72de78501789eb0]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]   31:     0x652854100159 - std[e72de78501789eb0]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]   32:     0x652854738cf4 - <&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe as core[6aaeda2c7ad07a48]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/core/src/ops/function.rs:287:21
[INFO] [stderr]   33:     0x652854738cf4 - std[e72de78501789eb0]::panicking::catch_unwind::do_call::<&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:581:40
[INFO] [stderr]   34:     0x652854738cf4 - std[e72de78501789eb0]::panicking::catch_unwind::<i32, &dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:544:19
[INFO] [stderr]   35:     0x652854738cf4 - std[e72de78501789eb0]::panic::catch_unwind::<&dyn core[6aaeda2c7ad07a48]::ops::function::Fn<(), Output = i32> + core[6aaeda2c7ad07a48]::marker::Sync + core[6aaeda2c7ad07a48]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stderr]   36:     0x652854738cf4 - std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/rt.rs:175:24
[INFO] [stderr]   37:     0x652854738cf4 - std[e72de78501789eb0]::panicking::catch_unwind::do_call::<std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:581:40
[INFO] [stderr]   38:     0x652854738cf4 - std[e72de78501789eb0]::panicking::catch_unwind::<isize, std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panicking.rs:544:19
[INFO] [stderr]   39:     0x652854738cf4 - std[e72de78501789eb0]::panic::catch_unwind::<std[e72de78501789eb0]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/panic.rs:359:14
[INFO] [stderr]   40:     0x652854738cf4 - std[e72de78501789eb0]::rt::lang_start_internal
[INFO] [stderr]                                at /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/std/src/rt.rs:171:5
[INFO] [stderr]   41:     0x6528541babf5 - main
[INFO] [stderr]   42:     0x743f095461ca - <unknown>
[INFO] [stderr]   43:     0x743f0954628b - __libc_start_main
[INFO] [stderr]   44:     0x65285368f529 - <unknown>
[INFO] [stderr]   45:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "a6820c8052817a76125f99279dc8ff613ccd908625753e8161bcd19a886672f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6820c8052817a76125f99279dc8ff613ccd908625753e8161bcd19a886672f3", kill_on_drop: false }`
[INFO] [stdout] a6820c8052817a76125f99279dc8ff613ccd908625753e8161bcd19a886672f3