[INFO] fetching crate sync_cow 0.1.1... [INFO] testing sync_cow-0.1.1 against 1.91.0 for beta-1.92-2 [INFO] extracting crate sync_cow 0.1.1 into /workspace/builds/worker-4-tc1/source [INFO] started tweaking crates.io crate sync_cow 0.1.1 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate sync_cow 0.1.1 [INFO] tweaked toml for crates.io crate sync_cow 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate sync_cow 0.1.1 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] crate crates.io crate sync_cow 0.1.1 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" "+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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ef6aca32241d0031a6895db4293530301f5f148a3d26419b8fe233a87d452f90 [INFO] running `Command { std: "docker" "start" "-a" "ef6aca32241d0031a6895db4293530301f5f148a3d26419b8fe233a87d452f90", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ef6aca32241d0031a6895db4293530301f5f148a3d26419b8fe233a87d452f90", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef6aca32241d0031a6895db4293530301f5f148a3d26419b8fe233a87d452f90", kill_on_drop: false }` [INFO] [stdout] ef6aca32241d0031a6895db4293530301f5f148a3d26419b8fe233a87d452f90 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 18557dd8c3a5f617bfa600d8b7fa33bbba58a0a001ecc260073f563b1024be6c [INFO] running `Command { std: "docker" "start" "-a" "18557dd8c3a5f617bfa600d8b7fa33bbba58a0a001ecc260073f563b1024be6c", kill_on_drop: false }` [INFO] [stderr] Compiling sync_cow v0.1.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s [INFO] running `Command { std: "docker" "inspect" "18557dd8c3a5f617bfa600d8b7fa33bbba58a0a001ecc260073f563b1024be6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "18557dd8c3a5f617bfa600d8b7fa33bbba58a0a001ecc260073f563b1024be6c", kill_on_drop: false }` [INFO] [stdout] 18557dd8c3a5f617bfa600d8b7fa33bbba58a0a001ecc260073f563b1024be6c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e9927b48663526d6ef0daa5311be4d4514762c9bd73868305637295873ab3554 [INFO] running `Command { std: "docker" "start" "-a" "e9927b48663526d6ef0daa5311be4d4514762c9bd73868305637295873ab3554", kill_on_drop: false }` [INFO] [stderr] Compiling sync_cow v0.1.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s [INFO] running `Command { std: "docker" "inspect" "e9927b48663526d6ef0daa5311be4d4514762c9bd73868305637295873ab3554", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e9927b48663526d6ef0daa5311be4d4514762c9bd73868305637295873ab3554", kill_on_drop: false }` [INFO] [stdout] e9927b48663526d6ef0daa5311be4d4514762c9bd73868305637295873ab3554 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fd1a8aa25b47edf8c721c790da46057989ad7dba2291f7a2265b8467ceb579dc [INFO] running `Command { std: "docker" "start" "-a" "fd1a8aa25b47edf8c721c790da46057989ad7dba2291f7a2265b8467ceb579dc", 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/sync_cow-9644b0145433d28e) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::cow_faster_than_rwlock_nosleep ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::cow_faster_than_rwlock_nosleep stdout ---- [INFO] [stdout] Got 93 last, but 96 then [INFO] [stdout] Got 97 last, but 99 then [INFO] [stdout] 9158 [INFO] [stdout] 9073 [INFO] [stdout] 9158 [INFO] [stdout] 9169 [INFO] [stdout] 9137 [INFO] [stdout] 8533 [INFO] [stdout] 9170 [INFO] [stdout] 9165 [INFO] [stdout] 9162 [INFO] [stdout] 9130 [INFO] [stdout] [INFO] [stdout] thread 'tests::cow_faster_than_rwlock_nosleep' (24) panicked at src/tests.rs:128:9: [INFO] [stdout] The readers did not catch all writes sequentially, probably they were too slow [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5ae116029ad2 - 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: 0x5ae116029ad2 - 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: 0x5ae116029ad2 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5ae116029ad2 - ::fmt::h4e0a3aeea0f9c085 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5ae116039dcf - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5ae116039dcf - core::fmt::write::hecf68a131630c74d [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5ae115ff6f41 - std::io::default_write_fmt::ha6b238eff7f0ef8a [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5ae115ff6f41 - std::io::Write::write_fmt::h9846fe3d2a36c1ea [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5ae116003012 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5ae116007c3f - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5ae116007ad1 - std::panicking::default_hook::h63f9bf8161c5d325 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5ae115fc86be - as core::ops::function::Fn>::call::hb8126f8384f98101 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 12: 0x5ae115fc86be - test::test_main_with_exit_callback::{{closure}}::hae96ae0cd2f2ce70 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5ae1160082ff - as core::ops::function::Fn>::call::ha703f6686c81d0c6 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 14: 0x5ae1160082ff - std::panicking::panic_with_hook::h3173740e06bd0752 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5ae116008126 - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:700:13 [INFO] [stdout] 16: 0x5ae116003149 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5ae115feb57d - __rustc[de0091b922c53d7e]::rust_begin_unwind [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5ae1160417d0 - core::panicking::panic_fmt::h5138da2ef87be35b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5ae115f9ceee - sync_cow::tests::write_and_read_alot::h1f40d06d2319b445 [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:128:9 [INFO] [stdout] 20: 0x5ae115f9e49e - sync_cow::tests::cow_faster_than_rwlock_nosleep::h3a4d9d7f375f2589 [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:10:9 [INFO] [stdout] 21: 0x5ae115f9e687 - sync_cow::tests::cow_faster_than_rwlock_nosleep::{{closure}}::hde9db9713beeb1c9 [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:6:36 [INFO] [stdout] 22: 0x5ae115fa31e6 - core::ops::function::FnOnce::call_once::h11314b0c5ea19c44 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5ae115fc849b - core::ops::function::FnOnce::call_once::h8f50ae93d93b62b4 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5ae115fc849b - test::__rust_begin_short_backtrace::h447963718d05a644 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:663:18 [INFO] [stdout] 25: 0x5ae115fde0d5 - test::run_test_in_process::{{closure}}::hf890ba4755ca86c0 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:74 [INFO] [stdout] 26: 0x5ae115fde0d5 - as core::ops::function::FnOnce<()>>::call_once::h31e4b2860e583faa [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 27: 0x5ae115fde0d5 - std::panicking::catch_unwind::do_call::hec7cdbbe797e2cab [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40 [INFO] [stdout] 28: 0x5ae115fde0d5 - std::panicking::catch_unwind::h24d3b93458b5ba67 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19 [INFO] [stdout] 29: 0x5ae115fde0d5 - std::panic::catch_unwind::h46eeec7cf9c9336c [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14 [INFO] [stdout] 30: 0x5ae115fde0d5 - test::run_test_in_process::h290de6e559006104 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:27 [INFO] [stdout] 31: 0x5ae115fde0d5 - test::run_test::{{closure}}::h26eeb2c5f7e9a995 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:607:43 [INFO] [stdout] 32: 0x5ae115fb48d4 - test::run_test::{{closure}}::h85af00882daabeaa [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:637:41 [INFO] [stdout] 33: 0x5ae115fb48d4 - std::sys::backtrace::__rust_begin_short_backtrace::h9d9305dda51fa5f2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 34: 0x5ae115fb827a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc6aada8b43f0527b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 35: 0x5ae115fb827a - as core::ops::function::FnOnce<()>>::call_once::ha89fe5505c1206f5 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 36: 0x5ae115fb827a - std::panicking::catch_unwind::do_call::he3e0bef721d99583 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40 [INFO] [stdout] 37: 0x5ae115fb827a - std::panicking::catch_unwind::ha8241964d3d773cd [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19 [INFO] [stdout] 38: 0x5ae115fb827a - std::panic::catch_unwind::ha8554bc7696cae72 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14 [INFO] [stdout] 39: 0x5ae115fb827a - std::thread::Builder::spawn_unchecked_::{{closure}}::he06f1f62b4c90f8d [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 40: 0x5ae115fb827a - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha7fd20ecae19b9b9 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x5ae115ffe33f - as core::ops::function::FnOnce>::call_once::h43642ed9c40e0ab2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 42: 0x5ae115ffe33f - 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] 43: 0x78cb01257aa4 - [INFO] [stdout] 44: 0x78cb012e4a64 - clone [INFO] [stdout] 45: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] tests::cow_faster_than_rwlock_nosleep [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.00s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "fd1a8aa25b47edf8c721c790da46057989ad7dba2291f7a2265b8467ceb579dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fd1a8aa25b47edf8c721c790da46057989ad7dba2291f7a2265b8467ceb579dc", kill_on_drop: false }` [INFO] [stdout] fd1a8aa25b47edf8c721c790da46057989ad7dba2291f7a2265b8467ceb579dc