[INFO] fetching crate parking_lot_mpsc 0.1.5... [INFO] extracting crate parking_lot_mpsc 0.1.5 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parking_lot_mpsc/0.1.5 [INFO] extracting crate parking_lot_mpsc 0.1.5 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/parking_lot_mpsc/0.1.5 [INFO] validating manifest of parking_lot_mpsc-0.1.5 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of parking_lot_mpsc-0.1.5 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing parking_lot_mpsc-0.1.5 [INFO] finished frobbing parking_lot_mpsc-0.1.5 [INFO] frobbed toml for parking_lot_mpsc-0.1.5 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parking_lot_mpsc/0.1.5/Cargo.toml [INFO] started frobbing parking_lot_mpsc-0.1.5 [INFO] finished frobbing parking_lot_mpsc-0.1.5 [INFO] frobbed toml for parking_lot_mpsc-0.1.5 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/parking_lot_mpsc/0.1.5/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing parking_lot_mpsc-0.1.5 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parking_lot_mpsc/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"` [INFO] [stdout] e5c048d7ef263a5024c2ea6e0d6d5a4f92da4d2b6e60f570e5a88b74bf3c046d [INFO] running `"docker" "start" "-a" "e5c048d7ef263a5024c2ea6e0d6d5a4f92da4d2b6e60f570e5a88b74bf3c046d"` [INFO] [stderr] Compiling parking_lot_mpsc v0.1.5 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/select.rs:108:19 [INFO] [stderr] | [INFO] [stderr] 108 | packet: &'rx (Packet+'rx), [INFO] [stderr] | ^^^^^^^^^^ help: use `dyn`: `dyn Packet+'rx` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1538:32 [INFO] [stderr] | [INFO] [stderr] 1538 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1578:32 [INFO] [stderr] | [INFO] [stderr] 1578 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1595:32 [INFO] [stderr] | [INFO] [stderr] 1595 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1626:32 [INFO] [stderr] | [INFO] [stderr] 1626 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1656:32 [INFO] [stderr] | [INFO] [stderr] 1656 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.40s [INFO] running `"docker" "inspect" "e5c048d7ef263a5024c2ea6e0d6d5a4f92da4d2b6e60f570e5a88b74bf3c046d"` [INFO] running `"docker" "rm" "-f" "e5c048d7ef263a5024c2ea6e0d6d5a4f92da4d2b6e60f570e5a88b74bf3c046d"` [INFO] [stdout] e5c048d7ef263a5024c2ea6e0d6d5a4f92da4d2b6e60f570e5a88b74bf3c046d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parking_lot_mpsc/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 0f6a47f4c1fd5d52f4a11d541e93b4d6cfdafaf9405e1dc5bf750fccf0f8d7eb [INFO] running `"docker" "start" "-a" "0f6a47f4c1fd5d52f4a11d541e93b4d6cfdafaf9405e1dc5bf750fccf0f8d7eb"` [INFO] [stderr] Compiling parking_lot_mpsc v0.1.5 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/select.rs:108:19 [INFO] [stderr] | [INFO] [stderr] 108 | packet: &'rx (Packet+'rx), [INFO] [stderr] | ^^^^^^^^^^ help: use `dyn`: `dyn Packet+'rx` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1538:32 [INFO] [stderr] | [INFO] [stderr] 1538 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1578:32 [INFO] [stderr] | [INFO] [stderr] 1578 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1595:32 [INFO] [stderr] | [INFO] [stderr] 1595 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1626:32 [INFO] [stderr] | [INFO] [stderr] 1626 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:1656:32 [INFO] [stderr] | [INFO] [stderr] 1656 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used [INFO] [stderr] --> src/select.rs:522:13 [INFO] [stderr] | [INFO] [stderr] 522 | tx1.clone(); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: cloning is often expensive and is not expected to have side effects [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used [INFO] [stderr] --> src/select.rs:544:13 [INFO] [stderr] | [INFO] [stderr] 544 | tx1.clone(); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: cloning is often expensive and is not expected to have side effects [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.12s [INFO] running `"docker" "inspect" "0f6a47f4c1fd5d52f4a11d541e93b4d6cfdafaf9405e1dc5bf750fccf0f8d7eb"` [INFO] running `"docker" "rm" "-f" "0f6a47f4c1fd5d52f4a11d541e93b4d6cfdafaf9405e1dc5bf750fccf0f8d7eb"` [INFO] [stdout] 0f6a47f4c1fd5d52f4a11d541e93b4d6cfdafaf9405e1dc5bf750fccf0f8d7eb [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parking_lot_mpsc/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"` [INFO] [stdout] d7fe7416b65cb8239e1d4810ccbe12c23400617c60c73988640cd5a2e4f66b7c [INFO] running `"docker" "start" "-a" "d7fe7416b65cb8239e1d4810ccbe12c23400617c60c73988640cd5a2e4f66b7c"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/crater/target/debug/deps/parking_lot_mpsc-e3a020d76dd09db2 [INFO] [stdout] [INFO] [stdout] running 139 tests [INFO] [stdout] test mpsc_queue::tests::test_full ... ok [INFO] [stdout] test select::tests::fmt_debug_handle ... ok [INFO] [stdout] test select::tests::closed ... ok [INFO] [stdout] test select::tests::fmt_debug_select ... ok [INFO] [stdout] test select::tests::cloning3 ... ok [INFO] [stdout] test select::tests::cloning ... ok [INFO] [stdout] test select::tests::both_ready ... ok [INFO] [stdout] test select::tests::cloning2 ... ok [INFO] [stdout] test select::tests::oneshot_data_waiting ... ok [INFO] [stdout] test select::tests::preflight3 ... ok [INFO] [stdout] test mpsc_queue::tests::test ... ok [INFO] [stdout] test select::tests::preflight1 ... ok [INFO] [stdout] test select::tests::preflight2 ... ok [INFO] [stdout] test select::tests::preflight6 ... ok [INFO] [stdout] test select::tests::preflight4 ... ok [INFO] [stdout] test select::tests::preflight5 ... ok [INFO] [stdout] test select::tests::preflight7 ... ok [INFO] [stdout] test select::tests::preflight9 ... ok [INFO] [stdout] test select::tests::sync1 ... ok [INFO] [stdout] test select::tests::smoke ... ok [INFO] [stdout] test select::tests::unblocks ... ok [INFO] [stdout] test select::tests::sync3 ... ok [INFO] [stdout] test select::tests::smoke2 ... ok [INFO] [stdout] test select::tests::preflight8 ... ok [INFO] [stdout] test spsc_queue::tests::smoke_bound ... ok [INFO] [stdout] test select::tests::sync2 ... ok [INFO] [stdout] test spsc_queue::tests::peek ... ok [INFO] [stdout] test spsc_queue::tests::drop_full ... ok [INFO] [stdout] test spsc_queue::tests::smoke ... ok [INFO] [stdout] test select::tests::stream_data_waiting ... ok [INFO] [stdout] test select::tests::shared_data_waiting ... ok [INFO] [stdout] test sync_tests::drop_full ... ok [INFO] [stdout] test sync_tests::fmt_debug_recv ... ok [INFO] [stdout] test sync_tests::fmt_debug_sender ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stdout] test sync_tests::chan_gone_concurrent ... ok [INFO] [stderr] stack backtrace: [INFO] [stdout] test sync_tests::fmt_debug_sync_sender ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stdout] test sync_tests::oneshot_multi_thread_recv_close_stress ... ok [INFO] [stdout] test sync_tests::oneshot_multi_thread_close_stress ... ok [INFO] [stdout] test sync_tests::oneshot_multi_task_recv_then_send ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_close_chan_first ... ok [INFO] [stdout] test sync_tests::oneshot_multi_thread_send_recv_stress ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_peek_close ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_close_port_first ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stdout] test sync_tests::oneshot_single_thread_peek_data ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_peek_open ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_send_port_close ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', src/libcore/result.rs:999:5 [INFO] [stdout] test sync_tests::oneshot_single_thread_send_then_recv ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_recv_closed ... ok [INFO] [stdout] test sync_tests::destroy_upgraded_shared_port_when_sender_still_active ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_recv_open ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_send_closed ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_send_closed2 ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_send_open ... ok [INFO] [stdout] test sync_tests::oneshot_single_thread_try_recv_closed_with_data ... ok [INFO] [stdout] test sync_tests::port_gone_concurrent_shared ... ok [INFO] [stdout] test sync_tests::port_gone_concurrent ... ok [INFO] [stdout] test sync_tests::recv_timeout ... ok [INFO] [stdout] test sync_tests::recv_a_lot ... ok [INFO] [stdout] test sync_tests::send1 ... ok [INFO] [stdout] test sync_tests::send3 ... ok [INFO] [stdout] test sync_tests::send2 ... ok [INFO] [stdout] test sync_tests::send4 ... ok [INFO] [stdout] test sync_tests::smoke ... ok [INFO] [stdout] test sync_tests::smoke_chan_gone ... ok [INFO] [stdout] test sync_tests::smoke_chan_gone_shared ... ok [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stdout] test sync_tests::smoke_port_gone ... ok [INFO] [stdout] test sync_tests::smoke_shared ... ok [INFO] [stdout] test sync_tests::smoke_shared_port_gone2 ... ok [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418d1d - core::result::Result::unwrap::he1f74b70ff90b889 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stdout] test sync_tests::smoke_threads ... ok [INFO] [stderr] 12: 0x562dff40d3c5 - parking_lot_mpsc::sync_tests::oneshot_multi_task_recv_then_close::{{closure}}::h7f319845dd9c40b8 [INFO] [stderr] at src/lib.rs:2680 [INFO] [stderr] 13: 0x562dff4a92db - std::sys_common::backtrace::__rust_begin_short_backtrace::ha1f1f474e1826205 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stdout] test spsc_queue::tests::stress ... ok [INFO] [stdout] test sync_tests::stream_send_recv_stress ... ok [INFO] [stderr] 14: 0x562dff3f94dd - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h41c8b283ca2ce271 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff4138bd - as core::ops::function::FnOnce<()>>::call_once::h7dbf9114c52476de [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff405e20 - std::panicking::try::do_call::h53cec5c0555eee76 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff3ffd53 - std::panicking::try::h673feeb58a1a6edb [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff4149cd - std::panic::catch_unwind::h521e189c8fb2be4a [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3f246a - std::thread::Builder::spawn_unchecked::{{closure}}::h8a15cb0425d90cb8 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa5b3 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hbe276b66cde33b97 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418adb - core::result::Result::unwrap::hb29a23da9205a334 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff40dcbb - parking_lot_mpsc::sync_tests::oneshot_multi_thread_recv_close_stress::{{closure}}::{{closure}}::h756cb800a4617977 [INFO] [stderr] at src/lib.rs:2715 [INFO] [stderr] 13: 0x562dff4a96db - std::sys_common::backtrace::__rust_begin_short_backtrace::hfd947374a53e4f14 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f936d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h2c594b795324142d [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff41380d - as core::ops::function::FnOnce<()>>::call_once::h67175ba9e8570345 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff406290 - std::panicking::try::do_call::h89290474facba3ca [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff402493 - std::panicking::try::hb3335eee63cd1464 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff414fcd - std::panic::catch_unwind::h84282f0d5f67710e [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3ea5fa - std::thread::Builder::spawn_unchecked::{{closure}}::h107f639c310fa72e [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa213 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7fc57e5c8fd11c81 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stderr] stack backtrace: [INFO] [stdout] test sync_tests::oneshot_multi_task_recv_then_close ... ok [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stdout] test sync_tests::oneshot_single_thread_recv_chan_close ... ok [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stdout] test sync_tests::oneshot_multi_thread_send_close_stress ... ok [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418adb - core::result::Result::unwrap::hb29a23da9205a334 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff40b17f - parking_lot_mpsc::sync_tests::oneshot_single_thread_recv_chan_close::{{closure}}::h10555670a0c7c9de [INFO] [stderr] at src/lib.rs:2585 [INFO] [stderr] 13: 0x562dff4a9059 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7db4277562867ddf [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f9d36 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hcf8ab3754072ccd1 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff413ea9 - as core::ops::function::FnOnce<()>>::call_once::hbc97797a530f31b7 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff40641b - std::panicking::try::do_call::h8dd6ef3ba6bb9c77 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff3fe155 - std::panicking::try::h36640db2f6462c77 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff415039 - std::panic::catch_unwind::h8dd59f662cbcc320 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3e96d4 - std::thread::Builder::spawn_unchecked::{{closure}}::h053aa4abb087387e [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa2fd - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8ec237dd4006eecb [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff4167fd - core::result::unwrap_failed::h777c58f168df66c7 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418717 - core::result::Result::unwrap::h639ae3906425d7b2 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff40d9db - parking_lot_mpsc::sync_tests::oneshot_multi_thread_send_close_stress::{{closure}}::h84218fe93c101dd0 [INFO] [stderr] at src/lib.rs:2704 [INFO] [stderr] 13: 0x562dff4a8fc3 - std::sys_common::backtrace::__rust_begin_short_backtrace::h770037487902af3c [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f926e - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h179c79bf9a72ea81 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff413cf1 - as core::ops::function::FnOnce<()>>::call_once::ha5423c5de262187b [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff406bc5 - std::panicking::try::do_call::hd93e5994a61ad285 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff3ffa21 - std::panicking::try::h608b16661322b3d9 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff415393 - std::panic::catch_unwind::hba981b0ef1a8f3e7 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3eedf6 - std::thread::Builder::spawn_unchecked::{{closure}}::h5597c4fb7bb13ca1 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa613 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc528cce7f24cc311 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stdout] test sync_tests::test_nested_recv_iter ... ok [INFO] [stdout] test sync_tests::test_recv_iter_break ... ok [INFO] [stdout] test sync_tests::try_recv_states ... ok [INFO] [stdout] test sync_tests::shared_chan_stress ... ok [INFO] [stdout] test sync_tests::try_send1 ... ok [INFO] [stdout] test sync_tests::try_send2 ... ok [INFO] [stdout] test sync_tests::try_send3 ... ok [INFO] [stdout] test tests::chan_gone_concurrent ... ok [INFO] [stdout] test tests::drop_full ... ok [INFO] [stdout] test tests::drop_full_shared ... ok [INFO] [stdout] test tests::issue_32114 ... ok [INFO] [stdout] test tests::no_runtime ... ok [INFO] [stdout] test tests::oneshot_multi_task_recv_then_close ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418d1d - core::result::Result::unwrap::he1f74b70ff90b889 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff4a09c5 - parking_lot_mpsc::tests::oneshot_multi_task_recv_then_close::{{closure}}::h9741ef936c887fa1 [INFO] [stderr] at src/lib.rs:1979 [INFO] [stderr] 13: 0x562dff4a8a6b - std::sys_common::backtrace::__rust_begin_short_backtrace::h0f41acefe1ec0900 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f910d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h06ca9c9587b3c9cd [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff4134fd - as core::ops::function::FnOnce<()>>::call_once::h2632217d8c2da2af [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff406c90 - std::panicking::try::do_call::hdae0163a06b5dd40 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff402153 - std::panicking::try::ha3e71531bdbc4140 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff41449d - std::panic::catch_unwind::h1183f852b69bed57 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3e9cda - std::thread::Builder::spawn_unchecked::{{closure}}::h09c8ba05ba15a6c0 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4a9ff3 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h48c2455f1eb95236 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stdout] test tests::oneshot_multi_task_recv_then_send ... ok [INFO] [stdout] test tests::oneshot_multi_thread_close_stress ... ok [INFO] [stdout] test tests::oneshot_multi_thread_recv_close_stress ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stdout] test tests::oneshot_multi_thread_send_close_stress ... ok [INFO] [stderr] stack backtrace: [INFO] [stdout] test tests::oneshot_multi_thread_send_recv_stress ... ok [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stdout] test tests::oneshot_single_thread_close_chan_first ... ok [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stdout] test tests::oneshot_single_thread_close_port_first ... ok [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418adb - core::result::Result::unwrap::hb29a23da9205a334 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff4a12fb - parking_lot_mpsc::tests::oneshot_multi_thread_recv_close_stress::{{closure}}::{{closure}}::hd3f5237a347579e6 [INFO] [stderr] at src/lib.rs:2014 [INFO] [stderr] 13: 0x562dff4a8e1b - std::sys_common::backtrace::__rust_begin_short_backtrace::h52b08fec9c929cdb [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f9b6d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::haa7a7cddc248bf5f [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff4135ad - as core::ops::function::FnOnce<()>>::call_once::h36b659a827cab9a3 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff405ba0 - std::panicking::try::do_call::h3e3cfbb0bb9fba8a [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff403de3 - std::panicking::try::hd6c503a5b5415e57 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff414a5d - std::panic::catch_unwind::h5b58682af73d76e4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3f6d0a - std::thread::Builder::spawn_unchecked::{{closure}}::hcbed59b820ba86a5 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa293 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h84ae4139753d7658 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stdout] test select::tests::stress ... ok [INFO] [stdout] test tests::oneshot_single_thread_peek_data ... ok [INFO] [stdout] test tests::oneshot_single_thread_peek_open ... ok [INFO] [stderr] thread '' panicked at 'called `Result::unwrap()` on an `Err` value: RecvError', src/libcore/result.rs:999:5 [INFO] [stdout] test tests::oneshot_single_thread_peek_close ... ok [INFO] [stderr] stack backtrace: [INFO] [stdout] test tests::oneshot_single_thread_recv_chan_close ... ok [INFO] [stderr] 0: 0x562dff52d75b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stdout] test tests::oneshot_single_thread_send_port_close ... ok [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stdout] test tests::oneshot_single_thread_send_then_recv ... ok [INFO] [stderr] 1: 0x562dff52d75b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stdout] test tests::oneshot_single_thread_try_recv_closed ... ok [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stdout] test tests::oneshot_single_thread_try_recv_open ... ok [INFO] [stderr] 2: 0x562dff52d75b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stdout] test tests::oneshot_single_thread_try_send_closed ... ok [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stdout] test tests::oneshot_single_thread_try_send_open ... ok [INFO] [stderr] 3: 0x562dff52d75b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x562dff52d75b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x562dff52d45c - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x562dff52ded0 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x562dff52da52 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x562dff52d936 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x562dff54400d - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x562dff416d19 - core::result::unwrap_failed::hb19b2165fde72ae4 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x562dff418adb - core::result::Result::unwrap::hb29a23da9205a334 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x562dff49f10a - parking_lot_mpsc::tests::oneshot_single_thread_recv_chan_close::{{closure}}::he8995c2ac5dbc4ab [INFO] [stderr] at src/lib.rs:1899 [INFO] [stderr] 13: 0x562dff4a95b9 - std::sys_common::backtrace::__rust_begin_short_backtrace::he737a7bc734be886 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 14: 0x562dff3f9e36 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf0b4666ecae36ffa [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stderr] 15: 0x562dff4132c9 - as core::ops::function::FnOnce<()>>::call_once::h00b33c31eb03bcbb [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stderr] 16: 0x562dff40550b - std::panicking::try::do_call::h1d3d9cd46d248c0b [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stderr] 17: 0x562dff530b7a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 18: 0x562dff403075 - std::panicking::try::hc0fd2e04950f9d6f [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stderr] 19: 0x562dff4147e9 - std::panic::catch_unwind::h397b03a8f0daad5b [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stderr] 20: 0x562dff3edf04 - std::thread::Builder::spawn_unchecked::{{closure}}::h3f0f802e42d1aa54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stderr] 21: 0x562dff4aa48d - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha9caf45d9dcaaf5f [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stderr] 22: 0x562dff52356f - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x562dff530230 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stderr] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stderr] 24: 0x562dff530230 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 25: 0x562dff530230 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 26: 0x7f2d474294a4 - start_thread [INFO] [stderr] 27: 0x7f2d46f54d0f - __clone [INFO] [stderr] 28: 0x0 - [INFO] [stdout] test tests::port_gone_concurrent ... ok [INFO] [stdout] test tests::port_gone_concurrent_shared ... ok [INFO] [stdout] test tests::destroy_upgraded_shared_port_when_sender_still_active ... ok [INFO] [stdout] test tests::recv_a_lot ... ok [INFO] [stdout] test tests::oneshot_single_thread_recv_timeout ... ok [INFO] [stdout] test tests::send_from_outside_runtime ... ok [INFO] [stdout] test tests::recv_timeout_upgrade ... ok [INFO] [stdout] test tests::shared_recv_timeout ... ok [INFO] [stdout] test tests::smoke ... ok [INFO] [stdout] test tests::smoke_chan_gone ... ok [INFO] [stdout] test tests::smoke_chan_gone_shared ... ok [INFO] [stdout] test tests::recv_from_outside_runtime ... ok [INFO] [stdout] test tests::smoke_port_gone ... ok [INFO] [stdout] test tests::shared_chan_stress ... ok [INFO] [stdout] test tests::smoke_shared_port_gone2 ... ok [INFO] [stdout] test tests::smoke_threads ... ok [INFO] [stdout] test tests::stream_send_recv_stress ... ok [INFO] [stdout] test tests::smoke_shared_port_gone ... ok [INFO] [stdout] test tests::smoke_shared ... ok [INFO] [stdout] test tests::stress ... ok [INFO] [stdout] test tests::stress_shared ... ok [INFO] [stdout] test tests::test_nested_recv_iter ... ok [INFO] [stdout] test tests::test_recv_into_iter_borrowed ... ok [INFO] [stdout] test tests::test_recv_into_iter_owned ... ok [INFO] [stdout] test tests::test_recv_iter_break ... ok [INFO] [stdout] test sync_tests::stress ... ok [INFO] [stdout] test tests::try_recv_states ... ok [INFO] [stdout] test tests::test_recv_try_iter ... ok [INFO] [stdout] test sync_tests::issue_15761 ... ok [INFO] [stdout] test sync_tests::stress_recv_timeout_two_threads ... ok [INFO] [stdout] test sync_tests::stress_shared ... ok [INFO] [stdout] test tests::stress_recv_timeout_shared ... ok [INFO] [stdout] test sync_tests::stress_recv_timeout_shared ... ok [INFO] [stdout] test tests::stress_recv_timeout_two_threads ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 139 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests parking_lot_mpsc [INFO] [stdout] [INFO] [stdout] running 24 tests [INFO] [stdout] test src/lib.rs - Iter (line 354) ... ok [INFO] [stdout] test src/lib.rs - (line 102) ... ok [INFO] [stdout] test src/lib.rs - (line 114) ... ok [INFO] [stdout] test src/lib.rs - (line 65) ... ok [INFO] [stdout] test src/lib.rs - Receiver (line 313) ... ok [INFO] [stdout] test src/lib.rs - IntoIter (line 432) ... ok [INFO] [stdout] test src/lib.rs - (line 79) ... ok [INFO] [stdout] test src/lib.rs - Receiver::iter (line 1333) ... ok [INFO] [stdout] test src/lib.rs - Receiver::recv_timeout (line 1225) ... ok [INFO] [stdout] test src/lib.rs - Receiver::recv (line 1132) ... ok [INFO] [stdout] test src/lib.rs - Receiver::recv_timeout (line 1244) ... ok [INFO] [stdout] test src/lib.rs - Receiver::try_iter (line 1364) ... ok [INFO] [stdout] test src/lib.rs - Receiver::try_recv (line 1056) ... ok [INFO] [stdout] test src/lib.rs - Sender::send (line 790) ... ok [INFO] [stdout] test src/lib.rs - Receiver::recv (line 1148) ... ok [INFO] [stdout] test src/lib.rs - Sender (line 463) ... ok [INFO] [stdout] test src/lib.rs - SyncSender::send (line 933) ... ok [INFO] [stdout] test src/lib.rs - SyncSender (line 508) ... ok [INFO] [stdout] test src/lib.rs - TryIter (line 390) ... ok [INFO] [stdout] test src/select.rs - select::Select::new (line 139) ... ok [INFO] [stdout] test src/lib.rs - channel (line 686) ... ok [INFO] [stdout] test src/select.rs - select (line 29) ... ok [INFO] [stdout] test src/lib.rs - SyncSender::try_send (line 969) ... ok [INFO] [stdout] test src/lib.rs - sync_channel (line 738) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "d7fe7416b65cb8239e1d4810ccbe12c23400617c60c73988640cd5a2e4f66b7c"` [INFO] running `"docker" "rm" "-f" "d7fe7416b65cb8239e1d4810ccbe12c23400617c60c73988640cd5a2e4f66b7c"` [INFO] [stdout] d7fe7416b65cb8239e1d4810ccbe12c23400617c60c73988640cd5a2e4f66b7c