Thread 1: lock: 
Thread 1: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b737fc29 - tuple::_(A, B).Clone::clone::h12953785260635639244
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/tuple.rs:56
   4:     0x7f27b737ab1d - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:260
   5:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   6:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   7:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   8:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   9:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  10:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  11:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  12:     0x7f27b7393748 - rust_try_inner
  13:     0x7f27b7393735 - rust_try
  14:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  15:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  16:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  17:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  18:     0x7f27b6d1b181 - start_thread
  19:     0x7f27b662a47c - __clone
  20:                0x0 - <unknown>
Thread 1: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b737ab2b - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   4:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   5:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   6:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   7:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   8:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
   9:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  10:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  11:     0x7f27b7393748 - rust_try_inner
  12:     0x7f27b7393735 - rust_try
  13:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  14:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  15:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  16:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  17:     0x7f27b6d1b181 - start_thread
  18:     0x7f27b662a47c - __clone
  19:                0x0 - <unknown>
Thread 1: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b738035e - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:46
   4:     0x7f27b737ab69 - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   5:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   6:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   7:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   8:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   9:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  10:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  11:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  12:     0x7f27b7393748 - rust_try_inner
  13:     0x7f27b7393735 - rust_try
  14:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  15:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  16:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  17:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  18:     0x7f27b6d1b181 - start_thread
  19:     0x7f27b662a47c - __clone
  20:                0x0 - <unknown>
Thread 1: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b73804f6 - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:45
   5:     0x7f27b737ab69 - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   6:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   7:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   8:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   9:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  10:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  11:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  12:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  13:     0x7f27b7393748 - rust_try_inner
  14:     0x7f27b7393735 - rust_try
  15:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  16:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  17:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  18:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  19:     0x7f27b6d1b181 - start_thread
  20:     0x7f27b662a47c - __clone
  21:                0x0 - <unknown>
Thread 1: Dropping bool at 0x7f27b5024038
Thread 1: Dropping LockSpaceGuard at 0x7f27b57fe5a0, mutex@0x7f27b5024030, inner@Some(0x7f27b57fe5c0)
Thread 1: Dropping ArcMutexGuard at 0x7f27b5024030, mutex@0x7f27b57fe5c0, inner@Some(0x7f27b5024038)
Thread 1: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7372f31 - namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>::drop.3529::hecb29ff6101c20de
   5:     0x7f27b7372eab - core..option..Option<namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>>::drop.3526::h6fc8e09d28f00f26
   6:     0x7f27b73726c1 - LockSpaceGuard<'a, K, V>.Drop::drop::h571293469804283678
                        at src/lib.rs:163
   7:     0x7f27b73722ba - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   8:     0x7f27b73721e1 - LockSpace<K, V>::with_lock::closure.3473
                        at src/lib.rs:242
   9:     0x7f27b737204a - result::Result<T, E>::map::h8873569863096424916
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
  10:     0x7f27b7371e7e - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
  11:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
  12:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  13:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  14:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  15:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  16:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  17:     0x7f27b7393748 - rust_try_inner
  18:     0x7f27b7393735 - rust_try
  19:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  20:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  21:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  22:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  23:     0x7f27b6d1b181 - start_thread
  24:     0x7f27b662a47c - __clone
  25:                0x0 - <unknown>
Thread 0: lock: (k:"test",val refs:3),
Thread 0: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b737fc29 - tuple::_(A, B).Clone::clone::h12953785260635639244
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/tuple.rs:56
   4:     0x7f27b737ab1d - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:260
   5:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   6:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   7:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   8:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   9:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  10:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  11:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  12:     0x7f27b7393748 - rust_try_inner
  13:     0x7f27b7393735 - rust_try
  14:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  15:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  16:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  17:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  18:     0x7f27b6d1b181 - start_thread
  19:     0x7f27b662a47c - __clone
  20:                0x0 - <unknown>
Thread 0: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b737ab2b - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   4:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   5:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   6:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   7:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   8:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
   9:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  10:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  11:     0x7f27b7393748 - rust_try_inner
  12:     0x7f27b7393735 - rust_try
  13:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  14:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  15:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  16:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  17:     0x7f27b6d1b181 - start_thread
  18:     0x7f27b662a47c - __clone
  19:                0x0 - <unknown>
Thread 0: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b738035e - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:46
   4:     0x7f27b737ab69 - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   5:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   6:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   7:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   8:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
   9:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  10:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  11:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  12:     0x7f27b7393748 - rust_try_inner
  13:     0x7f27b7393735 - rust_try
  14:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  15:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  16:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  17:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  18:     0x7f27b6d1b181 - start_thread
  19:     0x7f27b662a47c - __clone
  20:                0x0 - <unknown>
Thread 0: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b73804f6 - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:45
   5:     0x7f27b737ab69 - LockSpace<K, V>::lock::h2784408668235486415
                        at src/lib.rs:261
   6:     0x7f27b7371e72 - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   7:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
   8:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
   9:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  10:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  11:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  12:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  13:     0x7f27b7393748 - rust_try_inner
  14:     0x7f27b7393735 - rust_try
  15:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  16:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  17:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  18:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  19:     0x7f27b6d1b181 - start_thread
  20:     0x7f27b662a47c - __clone
  21:                0x0 - <unknown>
Thread 0: Dropping bool at 0x7f27b5024038
Thread 0: Dropping LockSpaceGuard at 0x7f27b62285a0, mutex@0x7f27b5024030, inner@Some(0x7f27b62285c0)
Thread 0: Dropping ArcMutexGuard at 0x7f27b5024030, mutex@0x7f27b62285c0, inner@Some(0x7f27b5024038)
Thread 1: try_remove_internal: (k:"test",val refs:4),
Thread 0: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7372f31 - namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>::drop.3529::hecb29ff6101c20de
   5:     0x7f27b7372eab - core..option..Option<namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>>::drop.3526::h6fc8e09d28f00f26
   6:     0x7f27b73726c1 - LockSpaceGuard<'a, K, V>.Drop::drop::h571293469804283678
                        at src/lib.rs:163
   7:     0x7f27b73722ba - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   8:     0x7f27b73721e1 - LockSpace<K, V>::with_lock::closure.3473
                        at src/lib.rs:242
   9:     0x7f27b737204a - result::Result<T, E>::map::h8873569863096424916
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
  10:     0x7f27b7371e7e - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
  11:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
  12:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  13:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  14:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  15:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  16:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  17:     0x7f27b7393748 - rust_try_inner
  18:     0x7f27b7393735 - rust_try
  19:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  20:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  21:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  22:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  23:     0x7f27b6d1b181 - start_thread
  24:     0x7f27b662a47c - __clone
  25:                0x0 - <unknown>
Thread 0: try_remove_internal: (k:"test",val refs:3),
Thread 0: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7366295 - _(namedlock..archashkey..ArcHashKey<collections..string..String>, namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>)::drop.2474::he5856ac5755ce91e
   5:     0x7f27b73722c5 - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   6:     0x7f27b73721e1 - LockSpace<K, V>::with_lock::closure.3473
                        at src/lib.rs:242
   7:     0x7f27b737204a - result::Result<T, E>::map::h8873569863096424916
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
   8:     0x7f27b7371e7e - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   9:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
  10:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  11:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  12:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  13:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  14:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  15:     0x7f27b7393748 - rust_try_inner
  16:     0x7f27b7393735 - rust_try
  17:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  18:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  19:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  20:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  21:     0x7f27b6d1b181 - start_thread
  22:     0x7f27b662a47c - __clone
  23:                0x0 - <unknown>
Thread 1: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7366295 - _(namedlock..archashkey..ArcHashKey<collections..string..String>, namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>)::drop.2474::he5856ac5755ce91e
   5:     0x7f27b73722c5 - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   6:     0x7f27b73721e1 - LockSpace<K, V>::with_lock::closure.3473
                        at src/lib.rs:242
   7:     0x7f27b737204a - result::Result<T, E>::map::h8873569863096424916
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
   8:     0x7f27b7371e7e - LockSpace<K, V>::with_lock::h5267956994859489656
                        at src/lib.rs:242
   9:     0x7f27b7371cf6 - test::closure.3431
                        at src/bin/auto_cleanup.rs:22
  10:     0x7f27b7371c58 - boxed::F.FnBox<A>::call_box::h7764863186694025976
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  11:     0x7f27b7371837 - boxed::Box<FnBox<A, Output $u3d$$u20$R$GT$$u2b$$u20$Send$u20$$u2b$$u20$$u27$a$GT$.FnOnce$LT$A$GT$::call_once::h17395659513669864343
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:390
  12:     0x7f27b7370dc1 - thread::Builder::spawn_inner::closure.3374
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:351
  13:     0x7f27b7370d2e - rt::unwind::try::try_fn::__rust_abi::h5269296860388069120
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:139
  14:     0x7f27b7370cc9 - rt::unwind::try::try_fn::h5269296860388069120
  15:     0x7f27b7393748 - rust_try_inner
  16:     0x7f27b7393735 - rust_try
  17:     0x7f27b73701ba - rt::unwind::try::h1408950784225798814
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/rt/unwind.rs:125
  18:     0x7f27b736fde7 - thread::Builder::spawn_inner::closure.3251
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libstd/thread/mod.rs:349
  19:     0x7f27b7371a3d - boxed::F.FnBox<A>::call_box::h2744855143800411816
                        at /build/buildd/rust-stable-1.0.0~trusty/src/liballoc/boxed.rs:374
  20:     0x7f27b738d8e1 - sys::thread::create::thread_start::h39e30398a7bd426faqv
  21:     0x7f27b6d1b181 - start_thread
  22:     0x7f27b662a47c - __clone
  23:                0x0 - <unknown>
Thread <main>: lock: (k:"test",val refs:1),
Thread <main>: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b737fc29 - tuple::_(A, B).Clone::clone::h12953785260635639244
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/tuple.rs:56
   4:     0x7f27b73828d5 - LockSpace<K, V>::lock::h10103648318904785321
                        at src/lib.rs:260
   5:     0x7f27b7381f1b - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
   6:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
   7:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
   8:     0x7f27b7393748 - rust_try_inner
   9:     0x7f27b7393735 - rust_try
  10:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  11:     0x7f27b73836c4 - main
  12:     0x7f27b6551ec4 - __libc_start_main
  13:     0x7f27b7361fb8 - <unknown>
  14:                0x0 - <unknown>
Thread <main>: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b73828e3 - LockSpace<K, V>::lock::h10103648318904785321
                        at src/lib.rs:261
   4:     0x7f27b7381f1b - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
   5:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
   6:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
   7:     0x7f27b7393748 - rust_try_inner
   8:     0x7f27b7393735 - rust_try
   9:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  10:     0x7f27b73836c4 - main
  11:     0x7f27b6551ec4 - __libc_start_main
  12:     0x7f27b7361fb8 - <unknown>
  13:                0x0 - <unknown>
Thread <main>: Cloning Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b737ff7a - arcdebug::ArcDebug<T>.Clone::clone::h3342718029928197444
                        at src/arcdebug.rs:37
   3:     0x7f27b738035e - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:46
   4:     0x7f27b7382921 - LockSpace<K, V>::lock::h10103648318904785321
                        at src/lib.rs:261
   5:     0x7f27b7381f1b - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
   6:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
   7:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
   8:     0x7f27b7393748 - rust_try_inner
   9:     0x7f27b7393735 - rust_try
  10:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  11:     0x7f27b73836c4 - main
  12:     0x7f27b6551ec4 - __libc_start_main
  13:     0x7f27b7361fb8 - <unknown>
  14:                0x0 - <unknown>
Thread <main>: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b73804f6 - arcmutexguard::arc_mutex_lock::h17066952499135022538
                        at src/arcmutexguard.rs:45
   5:     0x7f27b7382921 - LockSpace<K, V>::lock::h10103648318904785321
                        at src/lib.rs:261
   6:     0x7f27b7381f1b - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
   7:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
   8:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
   9:     0x7f27b7393748 - rust_try_inner
  10:     0x7f27b7393735 - rust_try
  11:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  12:     0x7f27b73836c4 - main
  13:     0x7f27b6551ec4 - __libc_start_main
  14:     0x7f27b7361fb8 - <unknown>
  15:                0x0 - <unknown>
Thread <main>: Dropping LockSpaceGuard at 0x7ffcfc083690, mutex@0x7f27b5024030, inner@Some(0x7ffcfc0836b0)
Thread <main>: Dropping ArcMutexGuard at 0x7f27b5024030, mutex@0x7ffcfc0836b0, inner@Some(0x7f27b5024038)
Thread <main>: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7372f31 - namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>::drop.3529::hecb29ff6101c20de
   5:     0x7f27b7372eab - core..option..Option<namedlock..arcmutexguard..ArcMutexGuard<WrappedBool>>::drop.3526::h6fc8e09d28f00f26
   6:     0x7f27b73726c1 - LockSpaceGuard<'a, K, V>.Drop::drop::h571293469804283678
                        at src/lib.rs:163
   7:     0x7f27b73722ba - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   8:     0x7f27b7382291 - LockSpace<K, V>::with_lock::closure.4214
                        at src/lib.rs:242
   9:     0x7f27b73820fa - result::Result<T, E>::map::h9592042354711901392
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
  10:     0x7f27b7381f27 - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
  11:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
  12:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
  13:     0x7f27b7393748 - rust_try_inner
  14:     0x7f27b7393735 - rust_try
  15:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  16:     0x7f27b73836c4 - main
  17:     0x7f27b6551ec4 - __libc_start_main
  18:     0x7f27b7361fb8 - <unknown>
  19:                0x0 - <unknown>
Thread <main>: try_remove_internal: (k:"test",val refs:2),
Thread <main>: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7366295 - _(namedlock..archashkey..ArcHashKey<collections..string..String>, namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>)::drop.2474::he5856ac5755ce91e
   5:     0x7f27b737a43b - core..option..Option<(namedlock..archashkey..ArcHashKey<collections..string..String>, namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>)>::drop.3963::h184a7fcf186d5eb1
   6:     0x7f27b73746f0 - LockSpace<K, V>::try_remove_internal::h18259483653887696248
                        at src/lib.rs:283
   7:     0x7f27b7372765 - LockSpaceGuard<'a, K, V>.Drop::drop::h571293469804283678
                        at src/lib.rs:165
   8:     0x7f27b73722ba - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   9:     0x7f27b7382291 - LockSpace<K, V>::with_lock::closure.4214
                        at src/lib.rs:242
  10:     0x7f27b73820fa - result::Result<T, E>::map::h9592042354711901392
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
  11:     0x7f27b7381f27 - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
  12:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
  13:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
  14:     0x7f27b7393748 - rust_try_inner
  15:     0x7f27b7393735 - rust_try
  16:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  17:     0x7f27b73836c4 - main
  18:     0x7f27b6551ec4 - __libc_start_main
  19:     0x7f27b7361fb8 - <unknown>
  20:                0x0 - <unknown>
Thread <main>: Dropping Arc with inner 0x7f27b5024030
stack backtrace:
   1:     0x7f27b738b489 - sys::backtrace::write::h869d65c21ae28e97d4r
   2:     0x7f27b7366634 - arcdebug::ArcDebug<T>.Drop::drop::h2986846613766573177
                        at src/arcdebug.rs:28
   3:     0x7f27b736630a - namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>::drop.2477::h684255411910b506
   4:     0x7f27b7366295 - _(namedlock..archashkey..ArcHashKey<collections..string..String>, namedlock..arcdebug..ArcDebug<std..sync..mutex..Mutex<WrappedBool>>)::drop.2474::he5856ac5755ce91e
   5:     0x7f27b73722c5 - namedlock..LockSpaceGuard<collections..string..String, WrappedBool>::drop.3479::h064c797ae81d8502
   6:     0x7f27b7382291 - LockSpace<K, V>::with_lock::closure.4214
                        at src/lib.rs:242
   7:     0x7f27b73820fa - result::Result<T, E>::map::h9592042354711901392
                        at /build/buildd/rust-stable-1.0.0~trusty/src/libcore/result.rs:475
   8:     0x7f27b7381f27 - LockSpace<K, V>::with_lock::h6817715131363989166
                        at src/lib.rs:242
   9:     0x7f27b7364508 - test::hb3fe428b9c2ee1abiba
                        at src/bin/auto_cleanup.rs:35
  10:     0x7f27b738354d - main::h75ef713acfe436e84ea
                        at src/bin/auto_cleanup.rs:41
  11:     0x7f27b7393748 - rust_try_inner
  12:     0x7f27b7393735 - rust_try
  13:     0x7f27b739036b - rt::lang_start::h9e9681a903e7387aOlw
  14:     0x7f27b73836c4 - main
  15:     0x7f27b6551ec4 - __libc_start_main
  16:     0x7f27b7361fb8 - <unknown>
  17:                0x0 - <unknown>
Thread <main>: Dropping bool at 0x7ffcfc083478
thread '<main>' panicked at 'Failed at iter 56, LockSpace{auto_clean,}', src/bin/auto_cleanup.rs:36
