[INFO] fetching crate mt_logger 3.0.2... [INFO] testing mt_logger-3.0.2 against 1.90.0 for beta-1.91-3 [INFO] extracting crate mt_logger 3.0.2 into /workspace/builds/worker-7-tc1/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-7-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate mt_logger 3.0.2 on toolchain 1.90.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 38 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4b77d9f579757e0cd593a65360f78831192fce0cc00ac2c8d49abfc8dc6fc8a9 [INFO] running `Command { std: "docker" "start" "-a" "4b77d9f579757e0cd593a65360f78831192fce0cc00ac2c8d49abfc8dc6fc8a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4b77d9f579757e0cd593a65360f78831192fce0cc00ac2c8d49abfc8dc6fc8a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b77d9f579757e0cd593a65360f78831192fce0cc00ac2c8d49abfc8dc6fc8a9", kill_on_drop: false }` [INFO] [stdout] 4b77d9f579757e0cd593a65360f78831192fce0cc00ac2c8d49abfc8dc6fc8a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e58b08fdf89ac7db2a53bdc8cf5cc1550b0346a66802cd6dd816dd74f5bd1cca [INFO] running `Command { std: "docker" "start" "-a" "e58b08fdf89ac7db2a53bdc8cf5cc1550b0346a66802cd6dd816dd74f5bd1cca", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling chrono v0.4.42 [INFO] [stderr] Compiling mt_logger v3.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.06s [INFO] running `Command { std: "docker" "inspect" "e58b08fdf89ac7db2a53bdc8cf5cc1550b0346a66802cd6dd816dd74f5bd1cca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e58b08fdf89ac7db2a53bdc8cf5cc1550b0346a66802cd6dd816dd74f5bd1cca", kill_on_drop: false }` [INFO] [stdout] e58b08fdf89ac7db2a53bdc8cf5cc1550b0346a66802cd6dd816dd74f5bd1cca [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2b8ed97359bde8bae14431d1cfa673f44914bd3e1d2c9f49dd03cf2778c51515 [INFO] running `Command { std: "docker" "start" "-a" "2b8ed97359bde8bae14431d1cfa673f44914bd3e1d2c9f49dd03cf2778c51515", 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 1.26s [INFO] running `Command { std: "docker" "inspect" "2b8ed97359bde8bae14431d1cfa673f44914bd3e1d2c9f49dd03cf2778c51515", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2b8ed97359bde8bae14431d1cfa673f44914bd3e1d2c9f49dd03cf2778c51515", kill_on_drop: false }` [INFO] [stdout] 2b8ed97359bde8bae14431d1cfa673f44914bd3e1d2c9f49dd03cf2778c51515 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.90.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8a4a6da8e4d70d453b6905344aacae178d4a50a16a1d6808a311bc2fe7643e94 [INFO] running `Command { std: "docker" "start" "-a" "8a4a6da8e4d70d453b6905344aacae178d4a50a16a1d6808a311bc2fe7643e94", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mt_logger-016d03f026da64f9) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::outputstream_verification ... FAILED [INFO] [stdout] test tests::flush_test ... FAILED [INFO] [stdout] test tests::format_verification ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::outputstream_verification stdout ---- [INFO] [stdout] Flushing all messages to their output... [INFO] [stdout] 2025-10-01T10:55:11.232096704: Entered LogReceiver thread. [INFO] [stdout] [INFO] [stdout] thread 'log_receiver' 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: 0x55d17ad380c2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x55d17ad380c2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x55d17ad380c2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x55d17ad380c2 - ::fmt::hdcfcb6d4c8489523 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x55d17ad5e903 - core::fmt::rt::Argument::fmt::h2c56b3114963061a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x55d17ad5e903 - core::fmt::write::h8a494366950f23bb [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x55d17ad34dc3 - std::io::default_write_fmt::h7b8824096454f323 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x55d17ad34dc3 - std::io::Write::write_fmt::h4e71294925c334d0 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x55d17ad37f12 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x55d17ad39829 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x55d17ad3965e - std::panicking::default_hook::h2c66fc99e962531d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x55d17aa475f4 - as core::ops::function::Fn>::call::hb6bd65493727d71a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x55d17aa475f4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x55d17ad3a1fe - as core::ops::function::Fn>::call::h318e4efb8c1a5689 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x55d17ad3a1fe - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x55d17ad39fca - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x55d17ad385b9 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x55d17ad39c5d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x55d17ad5cab0 - core::panicking::panic_fmt::h62f63d096dd276af [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x55d17a9fc51c - mt_logger::receiver::Receiver::main::h8baa1739fd542023 [INFO] [stdout] at /opt/rustwide/workdir/src/receiver.rs:122:27 [INFO] [stdout] 20: 0x55d17a9e66fd - mt_logger::MtLogger::new::{{closure}}::ha4ba8fbd2b0333d3 [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:167:41 [INFO] [stdout] 21: 0x55d17a9e17e6 - std::sys::backtrace::__rust_begin_short_backtrace::h2581fe11288ef89c [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 22: 0x55d17a9e8df3 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h32a3049b3276ebfb [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 23: 0x55d17a9f4c00 - as core::ops::function::FnOnce<()>>::call_once::h832cc8e09f474fc5 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 24: 0x55d17a9f656f - std::panicking::catch_unwind::do_call::h5c136901e9866f43 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stdout] 25: 0x55d17a9ebbeb - __rust_try [INFO] [stdout] 26: 0x55d17a9e8bda - std::panicking::catch_unwind::h72a6971ed4f4c30a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stdout] 27: 0x55d17a9e8bda - std::panic::catch_unwind::h0462cc72c26245a5 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stdout] 28: 0x55d17a9e8bda - std::thread::Builder::spawn_unchecked_::{{closure}}::hdae05f21ab3d6259 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 29: 0x55d17a9e2dde - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6f0bd3ddd0a791df [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 30: 0x55d17ad3d17f - as core::ops::function::FnOnce>::call_once::h5924238c754de3b8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 31: 0x55d17ad3d17f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17 [INFO] [stdout] 32: 0x7fc00e397aa4 - [INFO] [stdout] 33: 0x7fc00e424a34 - clone [INFO] [stdout] 34: 0x0 - [INFO] [stdout] Error: RecvError(RecvError) [INFO] [stdout] [INFO] [stdout] ---- tests::flush_test stdout ---- [INFO] [stdout] Initial message count: 0 [INFO] [stdout] Sending messages... [INFO] [stdout] Error: SendError(SendError { .. }) [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] [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" "8a4a6da8e4d70d453b6905344aacae178d4a50a16a1d6808a311bc2fe7643e94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a4a6da8e4d70d453b6905344aacae178d4a50a16a1d6808a311bc2fe7643e94", kill_on_drop: false }` [INFO] [stdout] 8a4a6da8e4d70d453b6905344aacae178d4a50a16a1d6808a311bc2fe7643e94