[INFO] fetching crate flexi_logger 0.31.10...
[INFO] testing flexi_logger-0.31.10 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate flexi_logger 0.31.10 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate flexi_logger 0.31.10
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate flexi_logger 0.31.10
[INFO] tweaked toml for crates.io crate flexi_logger 0.31.10 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flexi_logger 0.31.10 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flexi_logger 0.31.10 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-sync v0.9.5
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92
[INFO] running `Command { std: "docker" "start" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling thiserror v2.0.19
[INFO] [stderr]    Compiling nu-ansi-term v0.50.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
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[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling chrono v0.4.45
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.19
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling flexi_logger v0.31.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 23.58s
[INFO] running `Command { std: "docker" "inspect" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.119
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[INFO] [stderr]    Compiling flexi_logger v0.31.10 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling zerofrom v0.1.8
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[INFO] [stdout] warning: function `write_logs` is never used
[INFO] [stdout]    --> tests/test_trc.rs:127:19
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub(crate) fn write_logs(idx: u8) {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1m 07s
[INFO] running `Command { std: "docker" "inspect" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: function `write_logs` is never used
[INFO] [stderr]    --> tests/test_trc.rs:127:19
[INFO] [stderr]     |
[INFO] [stderr] 127 |     pub(crate) fn write_logs(idx: u8) {
[INFO] [stderr]     |                   ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `flexi_logger` (test "test_trc") generated 1 warning
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/flexi_logger-778431ebd6ba8fba)
[INFO] [stdout] 
[INFO] [stdout] running 47 tests
[INFO] [stdout] test deferred_now::test::test_chrono_rfc3339 ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_global ... ok
[INFO] [stdout] test log_specification::tests::match_full_path ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_valid ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_invalid_crate ... ok
[INFO] [stdout] test log_specification::tests::no_match ... ok
[INFO] [stdout] test log_specification::tests::match_beginning ... ok
[INFO] [stdout] test log_specification::tests::match_default1 ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_wrong_log_level ... ok
[INFO] [stdout] test log_specification::tests::parse_roundtrip ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_empty_log_level ... ok
[INFO] [stdout] test log_specification::tests::zero_level ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_valid_filter ... ok
[INFO] [stdout] test log_specification::tests::add_filters ... ok
[INFO] [stdout] test deferred_now::test::test_formats ... ok
[INFO] [stdout] test parameters::file_spec::test::issue_178 ... ok
[INFO] [stdout] test parameters::file_spec::test::test_default_basename ... ok
[INFO] [stdout] test log_specification::tests::reuse_logspec_builder ... ok
[INFO] [stdout] test log_specification::tests::match_beginning_longest_match ... ok
[INFO] [stderr] [2026-10-18 09:02:25.275550 +00:00] ERROR [std_writer.rs:222] This is an error message
[INFO] [stderr] [2026-10-18 09:02:25.275591 +00:00] WARN [std_writer.rs:222] This is a warning
[INFO] [stderr] [2026-10-18 09:02:25.275595 +00:00] INFO [std_writer.rs:222] This is an info message
[INFO] [stdout] test log_specification::tests::match_default2 ... ok
[INFO] [stdout] test log_specification::tests::parse_logging_spec_invalid_crate_filter ... ok
[INFO] [stdout] test parameters::file_spec::test::test_directory_and_suffix ... ok
[INFO] [stdout] test parameters::file_spec::test::issue_194 ... ok
[INFO] [stdout] test parameters::file_spec::test::test_from_url ... ok
[INFO] [stdout] test parameters::file_spec::test::test_basename ... ok
[INFO] [stdout] test parameters::file_spec::test::test_discriminant ... ok
[INFO] [stdout] test parameters::file_spec::test::test_empty_name ... ok
[INFO] [stdout] test parameters::file_spec::test::test_empty_base_name ... ok
[INFO] [stdout] test parameters::file_spec::test::test_if_default_use_timestamp ... ok
[INFO] [stdout] test writers::file_log_writer::state::timestamps::test::test_latest_timestamp_file ... ok
[INFO] [stdout] test parameters::file_spec::test::test_suppress_basename ... ok
[INFO] [stdout] test parameters::file_spec::test::test_timstamp_cfg ... ok
[INFO] [stdout] test primary_writer::std_writer::test::test_with_validation ... ok
[INFO] [stdout] test primary_writer::test_writer::test::test_with_validation ... ok
[INFO] [stdout] test writers::file_log_writer::test::test_max_log_level ... FAILED
[INFO] [stdout] test log_specification::tests::rocket ... ok
[INFO] [stdout] test parameters::file_spec::test::test_default ... ok
[INFO] [stdout] test writers::file_log_writer::test::test_reset ... FAILED
[INFO] [stdout] test writers::file_log_writer::test::test_rotate_no_append_numbers ... FAILED
[INFO] [stdout] test writers::file_log_writer::test::test_rotate_no_append_timestamps ... FAILED
[INFO] [stdout] test writers::file_log_writer::test::test_rotate_with_append_timestamps ... FAILED
[INFO] [stdout] test writers::file_log_writer::test::test_rotate_with_append_numbers ... FAILED
[INFO] [stdout] test log_specification::tests::parse_logging_spec_empty_with_filter ... ok
[INFO] [stdout] test parameters::file_spec::test::test_list_of_files ... ok
[INFO] [stdout] test formats::test::test_opt_format ... ok
[INFO] [stdout] test deferred_now::test::test_timestamp_taken_only_once ... ok
[INFO] [stdout] test writers::file_log_writer::test::issue_38 ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_max_log_level stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_max_log_level' (3137) panicked at src/writers/file_log_writer.rs:557:14:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e6232ad30 - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_max_log_level
[INFO] [stdout]   13:     0x5b1e62353539 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_max_log_level::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   15:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   20:     0x76e2119863d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_reset stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_reset' (3140) panicked at src/writers/file_log_writer.rs:484:10:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e62329f91 - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_reset
[INFO] [stdout]   13:     0x5b1e62353519 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_reset::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   15:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   20:     0x76e2119863d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_rotate_no_append_numbers stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_rotate_no_append_numbers' (3141) panicked at src/writers/file_log_writer.rs:652:14:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e62328b6f - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::write_loglines
[INFO] [stdout]   13:     0x5b1e6232b25b - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_no_append_numbers
[INFO] [stdout]   14:     0x5b1e62353559 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_no_append_numbers::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   16:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   17:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   21:     0x76e2119863d4 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_rotate_no_append_timestamps stdout ----
[INFO] [stdout] 2026-10-18 09:02:25.280145290 +00:00 ensure we start with -/-/-
[INFO] [stdout] 2026-10-18 09:02:25.280175210 +00:00 ensure this produces -/-/ONE
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_rotate_no_append_timestamps' (3142) panicked at src/writers/file_log_writer.rs:652:14:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e62328b6f - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::write_loglines
[INFO] [stdout]   13:     0x5b1e6232c92a - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_no_append_timestamps
[INFO] [stdout]   14:     0x5b1e62353599 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_no_append_timestamps::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   16:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   17:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   21:     0x76e2119863d4 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_rotate_with_append_timestamps stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_rotate_with_append_timestamps' (3145) panicked at src/writers/file_log_writer.rs:652:14:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e62328b6f - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::write_loglines
[INFO] [stdout]   13:     0x5b1e6232d4e3 - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_with_append_timestamps
[INFO] [stdout]   14:     0x5b1e623535b9 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_with_append_timestamps::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   16:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   17:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   21:     0x76e2119863d4 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- writers::file_log_writer::test::test_rotate_with_append_numbers stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'writers::file_log_writer::test::test_rotate_with_append_numbers' (3144) panicked at src/writers/file_log_writer.rs:652:14:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: OutputIo(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5b1e624c6a91 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5b1e624dd98a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5b1e624cb6ec - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5b1e624a0116 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5b1e624bdc19 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5b1e623826a0 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5b1e624bddd2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5b1e624a01c2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5b1e62498b39 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5b1e624a0f9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5b1e624de16c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5b1e624ddf42 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5b1e62328b6f - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::write_loglines
[INFO] [stdout]   13:     0x5b1e6232bafe - flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_with_append_numbers
[INFO] [stdout]   14:     0x5b1e62353579 - <flexi_logger[c2cb7803d6b9e6f5]::writers::file_log_writer::test::test_rotate_with_append_numbers::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x5b1e6237598b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   16:     0x5b1e62382ff5 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   17:     0x5b1e6237c8b4 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x5b1e62386152 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x5b1e624c5cd9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x76e2118f2dfa - <unknown>
[INFO] [stdout]   21:     0x76e2119863d4 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     writers::file_log_writer::test::test_max_log_level
[INFO] [stdout]     writers::file_log_writer::test::test_reset
[INFO] [stdout]     writers::file_log_writer::test::test_rotate_no_append_numbers
[INFO] [stdout]     writers::file_log_writer::test::test_rotate_no_append_timestamps
[INFO] [stdout]     writers::file_log_writer::test::test_rotate_with_append_numbers
[INFO] [stdout]     writers::file_log_writer::test::test_rotate_with_append_timestamps
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 41 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92", kill_on_drop: false }`
[INFO] [stdout] e910c8946f3afbff2b2bea44eb40b51a6c373e9091b0aa7fc52cc5718cc46b92
