[INFO] fetching crate sync_cow 0.1.1... [INFO] testing sync_cow-0.1.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1 [INFO] extracting crate sync_cow 0.1.1 into /workspace/builds/worker-5-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-5-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate sync_cow 0.1.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7a7ffe163d8056f3c667f1461cc81df947c8a54178d5a3392c550a6a7395de4c [INFO] running `Command { std: "docker" "start" "-a" "7a7ffe163d8056f3c667f1461cc81df947c8a54178d5a3392c550a6a7395de4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7a7ffe163d8056f3c667f1461cc81df947c8a54178d5a3392c550a6a7395de4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7a7ffe163d8056f3c667f1461cc81df947c8a54178d5a3392c550a6a7395de4c", kill_on_drop: false }` [INFO] [stdout] 7a7ffe163d8056f3c667f1461cc81df947c8a54178d5a3392c550a6a7395de4c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 97edccb37dd2aa55fa6f3af369790aef4f9e27c9a465128705069314fd7b0e75 [INFO] running `Command { std: "docker" "start" "-a" "97edccb37dd2aa55fa6f3af369790aef4f9e27c9a465128705069314fd7b0e75", 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 0.21s [INFO] running `Command { std: "docker" "inspect" "97edccb37dd2aa55fa6f3af369790aef4f9e27c9a465128705069314fd7b0e75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97edccb37dd2aa55fa6f3af369790aef4f9e27c9a465128705069314fd7b0e75", kill_on_drop: false }` [INFO] [stdout] 97edccb37dd2aa55fa6f3af369790aef4f9e27c9a465128705069314fd7b0e75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 12befa4d64f14fc060d458dc5b74534fe0f606063b432801df8384041b42e372 [INFO] running `Command { std: "docker" "start" "-a" "12befa4d64f14fc060d458dc5b74534fe0f606063b432801df8384041b42e372", 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 1.11s [INFO] running `Command { std: "docker" "inspect" "12befa4d64f14fc060d458dc5b74534fe0f606063b432801df8384041b42e372", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12befa4d64f14fc060d458dc5b74534fe0f606063b432801df8384041b42e372", kill_on_drop: false }` [INFO] [stdout] 12befa4d64f14fc060d458dc5b74534fe0f606063b432801df8384041b42e372 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f5aa57413bc02e5f861fae429a38a1a0f9ae758868d32570137adbdc45f5f896 [INFO] running `Command { std: "docker" "start" "-a" "f5aa57413bc02e5f861fae429a38a1a0f9ae758868d32570137adbdc45f5f896", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sync_cow-912950d581c66bed) [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 42 last, but 44 then [INFO] [stdout] Got 78 last, but 80 then [INFO] [stdout] Got 78 last, but 80 then [INFO] [stdout] 9481 [INFO] [stdout] 9481 [INFO] [stdout] 9483 [INFO] [stdout] 9216 [INFO] [stdout] 9207 [INFO] [stdout] 8654 [INFO] [stdout] 9460 [INFO] [stdout] 8837 [INFO] [stdout] 9399 [INFO] [stdout] 9106 [INFO] [stdout] [INFO] [stdout] thread 'tests::cow_faster_than_rwlock_nosleep' (25) 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: 0x572e66769212 - std::backtrace_rs::backtrace::libunwind::trace::h76861be37b31432e [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x572e66769212 - std::backtrace_rs::backtrace::trace_unsynchronized::h58d4003082192c17 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x572e66769212 - std::sys::backtrace::_print_fmt::hfe5857a399620d2a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x572e66769212 - ::fmt::h52160e9da139e442 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x572e6677956f - core::fmt::rt::Argument::fmt::h66fe6fef9ecca14a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x572e6677956f - core::fmt::write::hf09a056a304e021a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x572e667361d1 - std::io::default_write_fmt::hf1a3645468226e09 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x572e667361d1 - std::io::Write::write_fmt::ha5ada6d6a18bde33 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x572e667422a2 - std::sys::backtrace::BacktraceLock::print::h15104dbcf0fd1f14 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x572e66746ecf - std::panicking::default_hook::{{closure}}::h0fa6cd8dbe0dd76b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x572e66746d61 - std::panicking::default_hook::h8d20506cf72e4831 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x572e6670778e - as core::ops::function::Fn>::call::h3d020961abd83a77 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 12: 0x572e6670778e - test::test_main_with_exit_callback::{{closure}}::h720dd2fdb2ddcdca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x572e6674758f - as core::ops::function::Fn>::call::h75334a5fed245bca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 14: 0x572e6674758f - std::panicking::panic_with_hook::h746880a052e02c85 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x572e667473b6 - std::panicking::panic_handler::{{closure}}::h14b95830f89d14b3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:700:13 [INFO] [stdout] 16: 0x572e667423d9 - std::sys::backtrace::__rust_end_short_backtrace::h7ddaac0e9609a83d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x572e6672a6cd - __rustc[76f7e7187978e2f8]::rust_begin_unwind [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x572e66780f70 - core::panicking::panic_fmt::heb245a301f4395db [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panicking.rs:78:14 [INFO] [stdout] 19: 0x572e666dbf6e - sync_cow::tests::write_and_read_alot::hf4f6daf2e1447c91 [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:128:9 [INFO] [stdout] 20: 0x572e666dd51e - sync_cow::tests::cow_faster_than_rwlock_nosleep::h58614662f919763a [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:10:9 [INFO] [stdout] 21: 0x572e666dd707 - sync_cow::tests::cow_faster_than_rwlock_nosleep::{{closure}}::he0d9b80734c22335 [INFO] [stdout] at /opt/rustwide/workdir/src/tests.rs:6:36 [INFO] [stdout] 22: 0x572e666de536 - core::ops::function::FnOnce::call_once::hedfe6732df796f15 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x572e667075bb - core::ops::function::FnOnce::call_once::h933a5d67211adff2 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x572e667075bb - test::__rust_begin_short_backtrace::h2157af19b0990ffb [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:663:18 [INFO] [stdout] 25: 0x572e6671d195 - test::run_test_in_process::{{closure}}::hc3b17e0f313c900a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:74 [INFO] [stdout] 26: 0x572e6671d195 - as core::ops::function::FnOnce<()>>::call_once::ha23e4b490259273c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 27: 0x572e6671d195 - std::panicking::catch_unwind::do_call::h8dc9d5da83792f7a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 28: 0x572e6671d195 - std::panicking::catch_unwind::h0d8461330de4a18b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 29: 0x572e6671d195 - std::panic::catch_unwind::h0321b51397bf9811 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 30: 0x572e6671d195 - test::run_test_in_process::hcaaa440fdbe4a513 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:27 [INFO] [stdout] 31: 0x572e6671d195 - test::run_test::{{closure}}::h6345da602b85d6c3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:607:43 [INFO] [stdout] 32: 0x572e666f39a4 - test::run_test::{{closure}}::h90a3b75194d37b5d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:637:41 [INFO] [stdout] 33: 0x572e666f39a4 - std::sys::backtrace::__rust_begin_short_backtrace::hae41a17001f53ede [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 34: 0x572e666f726a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h6ea895368381e0b1 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 35: 0x572e666f726a - as core::ops::function::FnOnce<()>>::call_once::h9c39013633bb9237 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 36: 0x572e666f726a - std::panicking::catch_unwind::do_call::hac7dba9ee4d99108 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 37: 0x572e666f726a - std::panicking::catch_unwind::h73015d00e4866ebc [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 38: 0x572e666f726a - std::panic::catch_unwind::h6f7b38e188aa4f62 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 39: 0x572e666f726a - std::thread::Builder::spawn_unchecked_::{{closure}}::h969a6a2dc1856df7 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 40: 0x572e666f726a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h269ad1ff23e72122 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x572e6673d51f - as core::ops::function::FnOnce>::call_once::hdd09a470c130e806 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1973:9 [INFO] [stdout] 42: 0x572e6673d51f - std::sys::thread::unix::Thread::new::thread_start::h14ea1ba6e320367c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 43: 0x7478cd251aa4 - [INFO] [stdout] 44: 0x7478cd2dea34 - 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 1.03s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "f5aa57413bc02e5f861fae429a38a1a0f9ae758868d32570137adbdc45f5f896", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5aa57413bc02e5f861fae429a38a1a0f9ae758868d32570137adbdc45f5f896", kill_on_drop: false }` [INFO] [stdout] f5aa57413bc02e5f861fae429a38a1a0f9ae758868d32570137adbdc45f5f896