[INFO] fetching crate mt_logger 3.0.2... [INFO] testing mt_logger-3.0.2 against 1.91.0 for beta-1.92-2 [INFO] extracting crate mt_logger 3.0.2 into /workspace/builds/worker-0-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-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate mt_logger 3.0.2 on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8af6e37de306498d7d605dafbd36daaf36fa58b8a0e392645830706547dc15f6 [INFO] running `Command { std: "docker" "start" "-a" "8af6e37de306498d7d605dafbd36daaf36fa58b8a0e392645830706547dc15f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8af6e37de306498d7d605dafbd36daaf36fa58b8a0e392645830706547dc15f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8af6e37de306498d7d605dafbd36daaf36fa58b8a0e392645830706547dc15f6", kill_on_drop: false }` [INFO] [stdout] 8af6e37de306498d7d605dafbd36daaf36fa58b8a0e392645830706547dc15f6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 500b7dc98816120c5aa1969985ea6be87eddbf55fb0bbcb973aa056ee04eb855 [INFO] running `Command { std: "docker" "start" "-a" "500b7dc98816120c5aa1969985ea6be87eddbf55fb0bbcb973aa056ee04eb855", 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 0.47s [INFO] running `Command { std: "docker" "inspect" "500b7dc98816120c5aa1969985ea6be87eddbf55fb0bbcb973aa056ee04eb855", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "500b7dc98816120c5aa1969985ea6be87eddbf55fb0bbcb973aa056ee04eb855", kill_on_drop: false }` [INFO] [stdout] 500b7dc98816120c5aa1969985ea6be87eddbf55fb0bbcb973aa056ee04eb855 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d40b8155fdda8c042ccc4d7c34f7fa7e0bced3c4873ac9ecb831b0be73ae8216 [INFO] running `Command { std: "docker" "start" "-a" "d40b8155fdda8c042ccc4d7c34f7fa7e0bced3c4873ac9ecb831b0be73ae8216", 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 1.20s [INFO] running `Command { std: "docker" "inspect" "d40b8155fdda8c042ccc4d7c34f7fa7e0bced3c4873ac9ecb831b0be73ae8216", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d40b8155fdda8c042ccc4d7c34f7fa7e0bced3c4873ac9ecb831b0be73ae8216", kill_on_drop: false }` [INFO] [stdout] d40b8155fdda8c042ccc4d7c34f7fa7e0bced3c4873ac9ecb831b0be73ae8216 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4952d448773db4bb5432ede7fff6698b6727bf888aa592db3fc25da47c2c70df [INFO] running `Command { std: "docker" "start" "-a" "4952d448773db4bb5432ede7fff6698b6727bf888aa592db3fc25da47c2c70df", 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-8d7f2af4986823c0) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] [stdout] test tests::format_verification ... FAILED [INFO] [stdout] test tests::outputstream_verification ... FAILED [INFO] [stdout] test tests::flush_test ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::format_verification stdout ---- [INFO] [stdout] 2025-11-05T03:30:00.407988949: 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: 0x6163c2062d22 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x6163c2062d22 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x6163c2062d22 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x6163c2062d22 - ::fmt::h4e0a3aeea0f9c085 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x6163c20740df - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x6163c20740df - core::fmt::write::hecf68a131630c74d [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x6163c202f9d1 - std::io::default_write_fmt::ha6b238eff7f0ef8a [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x6163c202f9d1 - std::io::Write::write_fmt::h9846fe3d2a36c1ea [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x6163c203be52 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x6163c2040c8f - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x6163c2040b21 - std::panicking::default_hook::h63f9bf8161c5d325 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x6163c1d3dc0e - as core::ops::function::Fn>::call::hb8126f8384f98101 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 12: 0x6163c1d3dc0e - test::test_main_with_exit_callback::{{closure}}::hae96ae0cd2f2ce70 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x6163c204134f - as core::ops::function::Fn>::call::ha703f6686c81d0c6 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 14: 0x6163c204134f - std::panicking::panic_with_hook::h3173740e06bd0752 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x6163c20411aa - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x6163c203bf89 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x6163c2022e1d - __rustc[de0091b922c53d7e]::rust_begin_unwind [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x6163c207ccc0 - core::panicking::panic_fmt::h5138da2ef87be35b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x6163c1cf6a3c - mt_logger::receiver::Receiver::main::hd912fe44aa4308aa [INFO] [stdout] at /opt/rustwide/workdir/src/receiver.rs:122:27 [INFO] [stdout] 20: 0x6163c1cfdffd - mt_logger::MtLogger::new::{{closure}}::h7c1bad1a3a35830c [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:167:41 [INFO] [stdout] 21: 0x6163c1cf0ca6 - std::sys::backtrace::__rust_begin_short_backtrace::h7ee480f37c18a855 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 22: 0x6163c1d07103 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf306eb48d834f5c8 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 23: 0x6163c1cf7210 - as core::ops::function::FnOnce<()>>::call_once::h100bd81dda1e0305 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 24: 0x6163c1d0720f - std::panicking::catch_unwind::do_call::h5c651bd28f29fa95 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40 [INFO] [stdout] 25: 0x6163c1d0824b - __rust_try [INFO] [stdout] 26: 0x6163c1d06b6a - std::panicking::catch_unwind::hdb97d15c076f0afd [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19 [INFO] [stdout] 27: 0x6163c1d06b6a - std::panic::catch_unwind::h5126263ebc0f6bcc [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14 [INFO] [stdout] 28: 0x6163c1d06b6a - std::thread::Builder::spawn_unchecked_::{{closure}}::h18a0739fd5fbbc9b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 29: 0x6163c1d00b6e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4983aa1db00dfac7 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 30: 0x6163c203717f - as core::ops::function::FnOnce>::call_once::h43642ed9c40e0ab2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 31: 0x6163c203717f - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 32: 0x71d1f4d8daa4 - [INFO] [stdout] 33: 0x71d1f4e1aa64 - clone [INFO] [stdout] 34: 0x0 - [INFO] [stdout] Flushing all messages to their output... [INFO] [stdout] Error: RecvError(RecvError) [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] ---- tests::flush_test stdout ---- [INFO] [stdout] Initial message count: 0 [INFO] [stdout] Sending messages... [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 0.04s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "4952d448773db4bb5432ede7fff6698b6727bf888aa592db3fc25da47c2c70df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4952d448773db4bb5432ede7fff6698b6727bf888aa592db3fc25da47c2c70df", kill_on_drop: false }` [INFO] [stdout] 4952d448773db4bb5432ede7fff6698b6727bf888aa592db3fc25da47c2c70df