[INFO] fetching crate mt_logger 3.0.2... [INFO] testing mt_logger-3.0.2 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate mt_logger 3.0.2 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate mt_logger 3.0.2 [INFO] finished tweaking crates.io crate mt_logger 3.0.2 [INFO] tweaked toml for crates.io crate mt_logger 3.0.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mt_logger 3.0.2 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 37 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e7f2920d0c74377a0abf864a497accdb1e1cf1e9d9722032cbff4ddf81c4baf6 [INFO] running `Command { std: "docker" "start" "-a" "e7f2920d0c74377a0abf864a497accdb1e1cf1e9d9722032cbff4ddf81c4baf6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e7f2920d0c74377a0abf864a497accdb1e1cf1e9d9722032cbff4ddf81c4baf6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e7f2920d0c74377a0abf864a497accdb1e1cf1e9d9722032cbff4ddf81c4baf6", kill_on_drop: false }` [INFO] [stdout] e7f2920d0c74377a0abf864a497accdb1e1cf1e9d9722032cbff4ddf81c4baf6 [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4e20fdd2b1bdb57bddec8a78dd682575d66bc7d3a24869adaa8153d57f5d81b9 [INFO] running `Command { std: "docker" "start" "-a" "4e20fdd2b1bdb57bddec8a78dd682575d66bc7d3a24869adaa8153d57f5d81b9", kill_on_drop: false }` [INFO] [stderr] Compiling mt_logger v3.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.68s [INFO] running `Command { std: "docker" "inspect" "4e20fdd2b1bdb57bddec8a78dd682575d66bc7d3a24869adaa8153d57f5d81b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e20fdd2b1bdb57bddec8a78dd682575d66bc7d3a24869adaa8153d57f5d81b9", kill_on_drop: false }` [INFO] [stdout] 4e20fdd2b1bdb57bddec8a78dd682575d66bc7d3a24869adaa8153d57f5d81b9 [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 47c7315ff08588d1caae9e3977d9a5b7cff2ea617c5988a6f6a29e25e272b32a [INFO] running `Command { std: "docker" "start" "-a" "47c7315ff08588d1caae9e3977d9a5b7cff2ea617c5988a6f6a29e25e272b32a", kill_on_drop: false }` [INFO] [stderr] Compiling mt_logger v3.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.10s [INFO] running `Command { std: "docker" "inspect" "47c7315ff08588d1caae9e3977d9a5b7cff2ea617c5988a6f6a29e25e272b32a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "47c7315ff08588d1caae9e3977d9a5b7cff2ea617c5988a6f6a29e25e272b32a", kill_on_drop: false }` [INFO] [stdout] 47c7315ff08588d1caae9e3977d9a5b7cff2ea617c5988a6f6a29e25e272b32a [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 69909e2d0777f5cffe6c8e89876ea19c2cec426331335633cac807e73c0045af [INFO] running `Command { std: "docker" "start" "-a" "69909e2d0777f5cffe6c8e89876ea19c2cec426331335633cac807e73c0045af", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mt_logger-9dbd666c9fd35458) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::flush_test ... FAILED [INFO] [stdout] test tests::format_verification ... FAILED [INFO] [stdout] test tests::outputstream_verification ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::flush_test stdout ---- [INFO] [stdout] Initial message count: 0 [INFO] [stdout] Sending messages... [INFO] [stdout] 2025-11-05T03:30:05.697623033: Entered LogReceiver thread. [INFO] [stdout] [INFO] [stdout] thread 'log_receiver' (28) panicked at src/receiver.rs:122:27: [INFO] [stdout] Failed to create logs directory. Error: Read-only file system (os error 30) [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5936e05b56d2 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5936e05b56d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5936e05b56d2 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5936e05b56d2 - ::fmt::h47627beda0767f4c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5936e05c68bf - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5936e05c68bf - core::fmt::write::h8a63064c67176fd8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x5936e0582823 - std::io::default_write_fmt::hd4797e693c0ec256 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5936e0582823 - std::io::Write::write_fmt::h791e240ad2720c99 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5936e058eb62 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5936e05938df - std::panicking::default_hook::{{closure}}::h23e0299d4738b766 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5936e0593771 - std::panicking::default_hook::hfeec6294e8751b62 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5936e029f16e - as core::ops::function::Fn>::call::h3f5a16438cee2b4e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 12: 0x5936e029f16e - test::test_main_with_exit_callback::{{closure}}::h9214498cef9aafc5 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5936e0593eef - as core::ops::function::Fn>::call::hdb18da3e68df7464 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 14: 0x5936e0593eef - std::panicking::panic_with_hook::hd57cd463d793ed79 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5936e0593d4a - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5936e058ec99 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5936e0575e0d - __rustc[256c90bb7e548b45]::rust_begin_unwind [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5936e05cf460 - core::panicking::panic_fmt::hf19c198748ef6a95 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5936e026a242 - mt_logger::receiver::Receiver::main::h8a614bfa7d8d87f7 [INFO] [stdout] at /opt/rustwide/workdir/src/receiver.rs:122:27 [INFO] [stdout] 20: 0x5936e02505fd - mt_logger::MtLogger::new::{{closure}}::h74144539a294606e [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:167:41 [INFO] [stdout] 21: 0x5936e02546c6 - std::sys::backtrace::__rust_begin_short_backtrace::h009da76f55fa010d [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 22: 0x5936e026d603 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h4d08c01a3a76d713 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 23: 0x5936e0264a30 - as core::ops::function::FnOnce<()>>::call_once::h8109f6d7b3df630a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 24: 0x5936e025a156 - std::panicking::catch_unwind::do_call::h1003e66719344858 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 25: 0x5936e026f24b - __rust_try [INFO] [stdout] 26: 0x5936e026d3ff - std::panicking::catch_unwind::hd58771088f892b41 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 27: 0x5936e026d3ff - std::panic::catch_unwind::hc42a6ce32ef1901e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 28: 0x5936e026d3ff - std::thread::Builder::spawn_unchecked_::{{closure}}::hf6635050d4b40468 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 29: 0x5936e026528e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4abd50b1e45b2cb6 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 30: 0x5936e0589f8f - as core::ops::function::FnOnce>::call_once::he4d85cb537521972 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2005:9 [INFO] [stdout] 31: 0x5936e0589f8f - std::sys::thread::unix::Thread::new::thread_start::hbaf586a9e50a98cd [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 32: 0x76727410daa4 - [INFO] [stdout] 33: 0x76727419aa64 - clone [INFO] [stdout] 34: 0x0 - [INFO] [stdout] Error: RecvError(RecvError) [INFO] [stdout] [INFO] [stdout] ---- tests::format_verification stdout ---- [INFO] [stdout] Flushing all messages to their output... [INFO] [stdout] Error: SendError(SendError { .. }) [INFO] [stdout] [INFO] [stdout] ---- tests::outputstream_verification stdout ---- [INFO] [stdout] Flushing all messages to their output... [INFO] [stdout] Error: SendError(SendError { .. }) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] tests::flush_test [INFO] [stdout] tests::format_verification [INFO] [stdout] tests::outputstream_verification [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "69909e2d0777f5cffe6c8e89876ea19c2cec426331335633cac807e73c0045af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69909e2d0777f5cffe6c8e89876ea19c2cec426331335633cac807e73c0045af", kill_on_drop: false }` [INFO] [stdout] 69909e2d0777f5cffe6c8e89876ea19c2cec426331335633cac807e73c0045af