[INFO] fetching crate mt_logger 3.0.2... [INFO] testing mt_logger-3.0.2 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate mt_logger 3.0.2 into /workspace/builds/worker-7-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-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mt_logger 3.0.2 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 55f5bd526b0792f04c0ff89f364ffd34588b95f3ae2d356d57fabfe76d3f399e [INFO] running `Command { std: "docker" "start" "-a" "55f5bd526b0792f04c0ff89f364ffd34588b95f3ae2d356d57fabfe76d3f399e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "55f5bd526b0792f04c0ff89f364ffd34588b95f3ae2d356d57fabfe76d3f399e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "55f5bd526b0792f04c0ff89f364ffd34588b95f3ae2d356d57fabfe76d3f399e", kill_on_drop: false }` [INFO] [stdout] 55f5bd526b0792f04c0ff89f364ffd34588b95f3ae2d356d57fabfe76d3f399e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d827caaf9ca1b4d23c7901be45d766e54e5ef4b4173671bff3c2a58af2d9bc4 [INFO] running `Command { std: "docker" "start" "-a" "9d827caaf9ca1b4d23c7901be45d766e54e5ef4b4173671bff3c2a58af2d9bc4", 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 3.47s [INFO] running `Command { std: "docker" "inspect" "9d827caaf9ca1b4d23c7901be45d766e54e5ef4b4173671bff3c2a58af2d9bc4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d827caaf9ca1b4d23c7901be45d766e54e5ef4b4173671bff3c2a58af2d9bc4", kill_on_drop: false }` [INFO] [stdout] 9d827caaf9ca1b4d23c7901be45d766e54e5ef4b4173671bff3c2a58af2d9bc4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d052e3a36359197490b1600d92b99ba65517e0fe51a0df12cddf07591703c45d [INFO] running `Command { std: "docker" "start" "-a" "d052e3a36359197490b1600d92b99ba65517e0fe51a0df12cddf07591703c45d", 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 1.70s [INFO] running `Command { std: "docker" "inspect" "d052e3a36359197490b1600d92b99ba65517e0fe51a0df12cddf07591703c45d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d052e3a36359197490b1600d92b99ba65517e0fe51a0df12cddf07591703c45d", kill_on_drop: false }` [INFO] [stdout] d052e3a36359197490b1600d92b99ba65517e0fe51a0df12cddf07591703c45d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] fa7cf8a742ec8c63fa33b09852cc4c52258eb5b669f2de3a80209c9a1b884451 [INFO] running `Command { std: "docker" "start" "-a" "fa7cf8a742ec8c63fa33b09852cc4c52258eb5b669f2de3a80209c9a1b884451", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mt_logger-5abae113fb2f7a73) [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] 2025-10-01T10:55:19.848653511: Entered LogReceiver thread. [INFO] [stdout] [INFO] [stdout] thread 'log_receiver' (20) 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: 0x5757ff55e882 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5757ff55e882 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5757ff55e882 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5757ff55e882 - ::fmt::h67edf0e4d33c343c [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5757ff56fc3f - core::fmt::rt::Argument::fmt::hef94184842aeafdd [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5757ff56fc3f - core::fmt::write::hcf0c66b48a8fa606 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5757ff52b551 - std::io::default_write_fmt::h69967ac0ba93195f [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5757ff52b551 - std::io::Write::write_fmt::h8db9396209deaa1c [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5757ff537962 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5757ff53c79f - std::panicking::default_hook::{{closure}}::h91001850288db5f7 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5757ff53c631 - std::panicking::default_hook::h2346dbb704ef5512 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5757ff238cce - as core::ops::function::Fn>::call::h18383b2e29377420 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 12: 0x5757ff238cce - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5757ff53ce5f - as core::ops::function::Fn>::call::h6dba6e441651a0d1 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 14: 0x5757ff53ce5f - std::panicking::panic_with_hook::hd2b063a6090d23a4 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5757ff53ccba - std::panicking::panic_handler::{{closure}}::he666d95f139a333e [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5757ff537a99 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5757ff51e83d - __rustc[1d67440d6e82e4f]::rust_begin_unwind [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5757ff578820 - core::panicking::panic_fmt::h420ddb7fd73daf53 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5757ff1f434c - mt_logger::receiver::Receiver::main::hc832447e608e9b7b [INFO] [stdout] at /opt/rustwide/workdir/src/receiver.rs:122:27 [INFO] [stdout] 20: 0x5757ff1fce0d - mt_logger::MtLogger::new::{{closure}}::h93c5eb2b4a20cf36 [INFO] [stdout] at /opt/rustwide/workdir/src/lib.rs:167:41 [INFO] [stdout] 21: 0x5757ff1f4f66 - std::sys::backtrace::__rust_begin_short_backtrace::h8211a77270ad1ae8 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 22: 0x5757ff1ea9e3 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5a4ec143b5dff454 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 23: 0x5757ff1f4c60 - as core::ops::function::FnOnce<()>>::call_once::hd44a55333070408d [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 24: 0x5757ff1f6e3f - std::panicking::catch_unwind::do_call::h6eec7abdf0f638ed [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40 [INFO] [stdout] 25: 0x5757ff1eb92b - __rust_try [INFO] [stdout] 26: 0x5757ff1ea7ca - std::panicking::catch_unwind::hf917fff4f1dd7867 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19 [INFO] [stdout] 27: 0x5757ff1ea7ca - std::panic::catch_unwind::h61c6e67a43b8ab1f [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14 [INFO] [stdout] 28: 0x5757ff1ea7ca - std::thread::Builder::spawn_unchecked_::{{closure}}::hb632392ceef08157 [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 29: 0x5757ff20461e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8849a40df4d4d3eb [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 30: 0x5757ff532bff - as core::ops::function::FnOnce>::call_once::h2044e71c41d3958a [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 31: 0x5757ff532bff - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a [INFO] [stdout] at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 32: 0x70a2e44cfaa4 - [INFO] [stdout] 33: 0x70a2e455ca34 - clone [INFO] [stdout] 34: 0x0 - [INFO] [stdout] Initial message count: 0 [INFO] [stdout] Sending messages... [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 0.03s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "fa7cf8a742ec8c63fa33b09852cc4c52258eb5b669f2de3a80209c9a1b884451", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fa7cf8a742ec8c63fa33b09852cc4c52258eb5b669f2de3a80209c9a1b884451", kill_on_drop: false }` [INFO] [stdout] fa7cf8a742ec8c63fa33b09852cc4c52258eb5b669f2de3a80209c9a1b884451