[INFO] fetching crate mtlog-tokio 0.1.2... [INFO] testing mtlog-tokio-0.1.2 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate mtlog-tokio 0.1.2 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate mtlog-tokio 0.1.2 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate mtlog-tokio 0.1.2 [INFO] tweaked toml for crates.io crate mtlog-tokio 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mtlog-tokio 0.1.2 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] crate crates.io crate mtlog-tokio 0.1.2 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" "+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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 54d1b00c0f9ef6dde7271ed8d7f2f6a37c919431f45a3895102be1b0bc9b69a5 [INFO] running `Command { std: "docker" "start" "-a" "54d1b00c0f9ef6dde7271ed8d7f2f6a37c919431f45a3895102be1b0bc9b69a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "54d1b00c0f9ef6dde7271ed8d7f2f6a37c919431f45a3895102be1b0bc9b69a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54d1b00c0f9ef6dde7271ed8d7f2f6a37c919431f45a3895102be1b0bc9b69a5", kill_on_drop: false }` [INFO] [stdout] 54d1b00c0f9ef6dde7271ed8d7f2f6a37c919431f45a3895102be1b0bc9b69a5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9ebbcdcb608ed05319e965bb176d04a22e6d69f57cc5726d365df016507a8786 [INFO] running `Command { std: "docker" "start" "-a" "9ebbcdcb608ed05319e965bb176d04a22e6d69f57cc5726d365df016507a8786", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Compiling libc v0.2.159 [INFO] [stderr] Compiling iana-time-zone v0.1.61 [INFO] [stderr] Compiling log v0.4.22 [INFO] [stderr] Compiling tokio v1.40.0 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling chrono v0.4.38 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling uuid v1.11.0 [INFO] [stderr] Compiling mtlog-tokio v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.78s [INFO] running `Command { std: "docker" "inspect" "9ebbcdcb608ed05319e965bb176d04a22e6d69f57cc5726d365df016507a8786", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ebbcdcb608ed05319e965bb176d04a22e6d69f57cc5726d365df016507a8786", kill_on_drop: false }` [INFO] [stdout] 9ebbcdcb608ed05319e965bb176d04a22e6d69f57cc5726d365df016507a8786 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 67b950a53e40161ebe8f4797ac0cbcfd5c3c535157882ce5785125c876edc4b3 [INFO] running `Command { std: "docker" "start" "-a" "67b950a53e40161ebe8f4797ac0cbcfd5c3c535157882ce5785125c876edc4b3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.159 [INFO] [stderr] Compiling proc-macro2 v1.0.87 [INFO] [stderr] Compiling unicode-ident v1.0.13 [INFO] [stderr] Compiling bytes v1.7.2 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.79 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Compiling signal-hook-registry v1.4.2 [INFO] [stderr] Compiling socket2 v0.5.7 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling mio v1.0.2 [INFO] [stderr] Compiling parking_lot v0.12.3 [INFO] [stderr] Compiling uuid v1.11.0 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Compiling tokio v1.40.0 [INFO] [stderr] Compiling mtlog-tokio v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 14.44s [INFO] running `Command { std: "docker" "inspect" "67b950a53e40161ebe8f4797ac0cbcfd5c3c535157882ce5785125c876edc4b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67b950a53e40161ebe8f4797ac0cbcfd5c3c535157882ce5785125c876edc4b3", kill_on_drop: false }` [INFO] [stdout] 67b950a53e40161ebe8f4797ac0cbcfd5c3c535157882ce5785125c876edc4b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b95bef1769cef9bd66c7212c957df84b2de35f2f5d606a9628ba5796987a3b41 [INFO] running `Command { std: "docker" "start" "-a" "b95bef1769cef9bd66c7212c957df84b2de35f2f5d606a9628ba5796987a3b41", 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/mtlog_tokio-15e8779f2452676d) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test log_writer::test_log_stdout ... ok [INFO] [stdout] test log_writer::test_log_file ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests mtlog_tokio [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/lib.rs - (line 13) ... ok [INFO] [stdout] test src/lib.rs - (line 54) ... FAILED [INFO] [stdout] test src/lib.rs - (line 27) ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 54) stdout ---- [INFO] [stdout] Test executable failed (exit status: 101). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] [INFO] [stdout] thread 'main' (129) panicked at src/lib.rs:16:5: [INFO] [stdout] assertion failed: std::fs::read_to_string("/tmp/app.log").unwrap().ends_with("Hello, world!\n") [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5c9c0fc304b2 - 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: 0x5c9c0fc304b2 - 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: 0x5c9c0fc304b2 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5c9c0fc304b2 - ::fmt::h47627beda0767f4c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5c9c0fc400df - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5c9c0fc400df - core::fmt::write::h8a63064c67176fd8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x5c9c0fc07873 - std::io::default_write_fmt::hc257f38f86d39af6 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5c9c0fc07873 - std::io::Write::write_fmt::h5e9b646cef91150b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5c9c0fc0f3a2 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5c9c0fc13b3f - std::panicking::default_hook::{{closure}}::h23e0299d4738b766 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5c9c0fc13999 - std::panicking::default_hook::hfeec6294e8751b62 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:328:9 [INFO] [stdout] 11: 0x5c9c0fc141c5 - std::panicking::panic_with_hook::hd57cd463d793ed79 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:834:13 [INFO] [stdout] 12: 0x5c9c0fc13f76 - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:700:13 [INFO] [stdout] 13: 0x5c9c0fc0f4d9 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 14: 0x5c9c0fbfb9fd - __rustc[256c90bb7e548b45]::rust_begin_unwind [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5 [INFO] [stdout] 15: 0x5c9c0fc43ef0 - core::panicking::panic_fmt::hf19c198748ef6a95 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14 [INFO] [stdout] 16: 0x5c9c0fc43ecc - core::panicking::panic::h5387b4c27e81d0dd [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:150:5 [INFO] [stdout] 17: 0x5c9c0fb204b8 - rust_out::main::{{closure}}::h7b55a7eb1a7d47d7 [INFO] [stdout] 18: 0x5c9c0fb1a686 - tokio::runtime::park::CachedParkThread::block_on::{{closure}}::hb1fd9c9edeae79f5 [INFO] [stdout] 19: 0x5c9c0fb19a06 - tokio::runtime::park::CachedParkThread::block_on::h31ecb054e0f6a2c5 [INFO] [stdout] 20: 0x5c9c0fb1b92b - tokio::runtime::context::blocking::BlockingRegionGuard::block_on::had98b34d32472ff2 [INFO] [stdout] 21: 0x5c9c0fb1bf4e - tokio::runtime::scheduler::multi_thread::MultiThread::block_on::{{closure}}::hde5441cce6170909 [INFO] [stdout] 22: 0x5c9c0fb1b15d - tokio::runtime::context::runtime::enter_runtime::hd45e31b4b8565b1e [INFO] [stdout] 23: 0x5c9c0fb1beb3 - tokio::runtime::scheduler::multi_thread::MultiThread::block_on::h4c2024c582fa05fd [INFO] [stdout] 24: 0x5c9c0fb1bb19 - tokio::runtime::runtime::Runtime::block_on_inner::hc6fbf7636a6bb3b6 [INFO] [stdout] 25: 0x5c9c0fb1bd8e - tokio::runtime::runtime::Runtime::block_on::h9dc33587b3a2b2b0 [INFO] [stdout] 26: 0x5c9c0fb1ffcd - rust_out::main::he986860d8b7bc94f [INFO] [stdout] 27: 0x5c9c0fb17f23 - core::ops::function::FnOnce::call_once::hd0f888ea33950d2d [INFO] [stdout] 28: 0x5c9c0fb16c16 - std::sys::backtrace::__rust_begin_short_backtrace::h70a8cfcb1f800bff [INFO] [stdout] 29: 0x5c9c0fb16bf9 - std::rt::lang_start::{{closure}}::h03ca8d00642774ee [INFO] [stdout] 30: 0x5c9c0fc09280 - core::ops::function::impls:: for &F>::call_once::hdf957eac011d0136 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:287:21 [INFO] [stdout] 31: 0x5c9c0fc09280 - std::panicking::catch_unwind::do_call::h9ff550f7799115e1 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 32: 0x5c9c0fc09280 - std::panicking::catch_unwind::ha7ce46787bb12905 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 33: 0x5c9c0fc09280 - std::panic::catch_unwind::h625b36596def7d39 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 34: 0x5c9c0fc09280 - std::rt::lang_start_internal::{{closure}}::h4cbc9430de699e2c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:175:24 [INFO] [stdout] 35: 0x5c9c0fc09280 - std::panicking::catch_unwind::do_call::h5af2f11409a22e3e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 36: 0x5c9c0fc09280 - std::panicking::catch_unwind::hf64cf7b0d8070f52 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 37: 0x5c9c0fc09280 - std::panic::catch_unwind::h480b74763390cdcf [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 38: 0x5c9c0fc09280 - std::rt::lang_start_internal::h4b3d04f698aef094 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:171:5 [INFO] [stdout] 39: 0x5c9c0fb16be1 - std::rt::lang_start::h457230af78cce7e7 [INFO] [stdout] 40: 0x5c9c0fb20805 - main [INFO] [stdout] 41: 0x77fd095a11ca - [INFO] [stdout] 42: 0x77fd095a128b - __libc_start_main [INFO] [stdout] 43: 0x5c9c0fb15975 - _start [INFO] [stdout] 44: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 54) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.71s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "b95bef1769cef9bd66c7212c957df84b2de35f2f5d606a9628ba5796987a3b41", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b95bef1769cef9bd66c7212c957df84b2de35f2f5d606a9628ba5796987a3b41", kill_on_drop: false }` [INFO] [stdout] b95bef1769cef9bd66c7212c957df84b2de35f2f5d606a9628ba5796987a3b41