$ ~/rr/bin/rr ./julia -q
rr: Saving execution to trace directory `/home/vtjnash/.local/share/rr/julia-42'.
julia> run(ignorestatus(`bash -i -c ls`))
analyzegc     CITATION.cff  CONTRIBUTING.md  etc         julia-03e2a561a1  julia-tsan   Makefile   normalizetypes.jl  src          test.ll        usr
base          cli           deps             Hello       julia-8b2824314a  julia-win32  Make.inc   nothing.jl         stdlib       THIRDPARTY.md  usr-staging
build-x86     Compiler      dist-extras      HISTORY.md  julia-asan        julia-win64  Make.user  pkgimage.mk        sysimage.mk  typos.toml     VERSION
CITATION.bib  contrib       doc              julia       julia.spdx.json   LICENSE.md   NEWS.md    README.md          test         ui             zipyard
Process(`bash -i -c ls`, ProcessExited(0))

julia> [FATAL src/RecordSession.cc:834:task_continue()] 
 (task 3764226 (rec:3764226) at time 5866)
 -> Assertion `!t->emulated_stop_pending' failed to hold. 
Tail of trace dump:
{
  real_time:30568399.848184 global_time:5846, event:`SYSCALLBUF_RESET' tid:3764226, ticks:1411912920
}
{
  real_time:30568399.848228 global_time:5847, event:`SYSCALL: write' (state:EXITING_SYSCALL) tid:3764226, ticks:1411912920
rax:0x1 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x1 rsi:0x7f573ad46c48 rdi:0xd rbp:0x7f5722e6b090 rsp:0x681ffdf0 r8:0x0 r9:0x7f57333824e0 r10:0x7f57454c3080 r11:0x246 r12:0x5608acfd0670 r13:0x5608ac6beb50 r14:0x7f57312f4790 r15:0x7f57454def30 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x1 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848388 global_time:5848, event:`SYSCALLBUF_FLUSH' tid:3764226, ticks:1411924018
  { syscall:'epoll_pwait', ret:0x0, size:0x10 }
  { syscall:'clock_gettime', ret:0x0, size:0x20 }
  { syscall:'clock_gettime', ret:0x0, size:0x20 }
}
{
  real_time:30568399.848399 global_time:5849, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411924018
rax:0xffffffffffffffda rbx:0x7f5722e6af10 rcx:0xffffffffffffffff rdx:0x7f5722e6ae80 rsi:0x5413 rdi:0xd rbp:0x7f5722e6ae90 rsp:0x7f5722e6ae00 r8:0x1 r9:0x7f573a53a000 r10:0x7f57454c3080 r11:0x246 r12:0x0 r13:0x7f57312f4828 r14:0x7f57320001a0 r15:0x7f57340c0000 rip:0x7f5745cdf94f eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848407 global_time:5850, event:`SYSCALLBUF_RESET' tid:3764226, ticks:1411924018
}
{
  real_time:30568399.848456 global_time:5851, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:3764226, ticks:1411924018
rax:0x0 rbx:0x7f5722e6af10 rcx:0xffffffffffffffff rdx:0x7f5722e6ae80 rsi:0x5413 rdi:0xd rbp:0x7f5722e6ae90 rsp:0x7f5722e6ae00 r8:0x1 r9:0x7f573a53a000 r10:0x7f57454c3080 r11:0x246 r12:0x0 r13:0x7f57312f4828 r14:0x7f57320001a0 r15:0x7f57340c0000 rip:0x7f5745cdf94f eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
  { tid:3764226, addr:0x7f5722e6ae80, length:0x8 }
}
{
  real_time:30568399.848521 global_time:5852, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411924534
rax:0xffffffffffffffda rbx:0x7f5722e6af10 rcx:0xffffffffffffffff rdx:0x7f5722e6ae80 rsi:0x5413 rdi:0xd rbp:0x7f5722e6ae90 rsp:0x7f5722e6ae00 r8:0x1 r9:0x7f573a53a000 r10:0x7f57454c3080 r11:0x246 r12:0x0 r13:0x7f57312f4828 r14:0x7f57320001a0 r15:0x7f57340c0000 rip:0x7f5745cdf94f eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848565 global_time:5853, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:3764226, ticks:1411924534
rax:0x0 rbx:0x7f5722e6af10 rcx:0xffffffffffffffff rdx:0x7f5722e6ae80 rsi:0x5413 rdi:0xd rbp:0x7f5722e6ae90 rsp:0x7f5722e6ae00 r8:0x1 r9:0x7f573a53a000 r10:0x7f57454c3080 r11:0x246 r12:0x0 r13:0x7f57312f4828 r14:0x7f57320001a0 r15:0x7f57340c0000 rip:0x7f5745cdf94f eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
  { tid:3764226, addr:0x7f5722e6ae80, length:0x8 }
}
{
  real_time:30568399.848664 global_time:5854, event:`SYSCALL: write' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411927203
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x2c rsi:0x7f571f17f498 rdi:0xd rbp:0x7f5722e6af30 rsp:0x681ffdf0 r8:0x0 r9:0x7f57333824e0 r10:0x7f57454c3080 r11:0x246 r12:0x5608acfd0670 r13:0x5608ac6beb50 r14:0x7f57312f4790 r15:0x7f57454def30 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x1 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848711 global_time:5855, event:`SYSCALL: write' (state:EXITING_SYSCALL) tid:3764226, ticks:1411927203
rax:0x2c rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x2c rsi:0x7f571f17f498 rdi:0xd rbp:0x7f5722e6af30 rsp:0x681ffdf0 r8:0x0 r9:0x7f57333824e0 r10:0x7f57454c3080 r11:0x246 r12:0x5608acfd0670 r13:0x5608ac6beb50 r14:0x7f57312f4790 r15:0x7f57454def30 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x1 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848824 global_time:5856, event:`SYSCALLBUF_FLUSH' tid:3764226, ticks:1411928752
  { syscall:'epoll_pwait', ret:0x0, size:0x10 }
  { syscall:'clock_gettime', ret:0x0, size:0x20 }
  { syscall:'clock_gettime', ret:0x0, size:0x20 }
}
{
  real_time:30568399.848834 global_time:5857, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411928752
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b810 rsi:0x5401 rdi:0xa rbp:0x7f5722e6b8d0 rsp:0x681ffdd0 r8:0x5608ac6beb08 r9:0x7f57395a7010 r10:0x7f57454c3080 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848840 global_time:5858, event:`SYSCALLBUF_RESET' tid:3764226, ticks:1411928752
}
{
  real_time:30568399.848884 global_time:5859, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:3764226, ticks:1411928752
rax:0x0 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b810 rsi:0x5401 rdi:0xa rbp:0x7f5722e6b8d0 rsp:0x681ffdd0 r8:0x5608ac6beb08 r9:0x7f57395a7010 r10:0x7f57454c3080 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
  { tid:3764226, addr:0x7f5722e6b810, length:0x24 }
}
{
  real_time:30568399.848935 global_time:5860, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411928776
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7d0 rsi:0x5401 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x7f57454c3080 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.848982 global_time:5861, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:3764226, ticks:1411928776
rax:0x0 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7d0 rsi:0x5401 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x7f57454c3080 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
  { tid:3764226, addr:0x7f5722e6b7d0, length:0x24 }
}
{
  real_time:30568399.849036 global_time:5862, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:3764226, ticks:1411928793
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7a0 rsi:0x5403 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x0 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.849081 global_time:5863, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:3764226, ticks:1411928793
rax:0xfffffffffffffe00 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7a0 rsi:0x5403 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x0 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
}
{
  real_time:30568399.849138 global_time:5864, event:`SIGNAL: SIGTTOU(async)' tid:3764226, ticks:1411928793
rax:0xfffffffffffffe00 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7a0 rsi:0x5403 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x0 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0 st0:0x0 st1:0x0 st2:0x0 st3:0x0 st4:0x0 st5:0x0 st6:0x0 st7:0x0 ymm0:0xa30000000bf0000000500004000 ymm1:0xa30000000bf ymm2:0xa30 ymm3:0x5 ymm4:0x16170f12001a131100010004157f1c03 ymm5:0x5608acb1d8e000005608acb1d8f0 ymm6:0x5608acb1d8e000005608acb1d8f0 ymm7:0x0 ymm8:0x6a8678e0c6558f31a585f270791a5e86 ymm9:0x7f571ec9651000007f571ec8a5b0 ymm10:0x7f571ec8af3000007f571ec8a1d0 ymm11:0x7f571ec8a6b000007f571ec8a690 ymm12:0x7f571ec89e1000007f571ec88070 ymm13:0x7f571ec8973000007f571ec89750 ymm14:0x7f571ec960f000007f571ec964d0 ymm15:0x7f571ec9613000007f571ec97590
}
{
  real_time:30568399.849197 global_time:5865, event:`SIGNAL_DELIVERY: SIGTTOU(async)' tid:3764226, ticks:1411928793
rax:0x10 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7f5722e6b7a0 rsi:0x5403 rdi:0xa rbp:0x7f5722e6b840 rsp:0x681ffdd0 r8:0x7f5722e6b870 r9:0x1 r10:0x0 r11:0x246 r12:0x977f r13:0x7f57312f4828 r14:0x1 r15:0x7f57234b93e0 rip:0x70000000 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x7f5745ba0c40 gs_base:0x0
  { tid:3764226, addr:0x681ffdd0, length:(nil) }
}
=== Start rr backtrace:
/home/vtjnash/rr/bin/rr(_ZN2rr13dump_rr_stackERNS_8ScopedFdE+0x5b)[0x55c2341d5a4b]
/home/vtjnash/rr/bin/rr(_ZN2rr15emergency_debugEPNS_4TaskE+0x152)[0x55c2340a9032]
/home/vtjnash/rr/bin/rr(+0xdfba2)[0x55c2340a9ba2]
/home/vtjnash/rr/bin/rr(+0xe01af)[0x55c2340aa1af]
/home/vtjnash/rr/bin/rr(_ZN2rr13RecordSession13task_continueERKNS0_9StepStateE+0x505)[0x55c2340d0725]
/home/vtjnash/rr/bin/rr(_ZN2rr13RecordSession11record_stepEv+0x3aa)[0x55c2340df28a]
/home/vtjnash/rr/bin/rr(_ZN2rr13RecordCommand3runERSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EE+0xda1)[0x55c2340d3271]
/home/vtjnash/rr/bin/rr(main+0x1a1)[0x55c23401f481]
/lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f62581cbd90]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f62581cbe40]
/home/vtjnash/rr/bin/rr(_start+0x25)[0x55c234021f65]
=== End rr backtrace
Launch debugger with
  'gdb' '-l' '10000' '-ex' 'set sysroot /' '-ex' 'target extended-remote 127.0.0.1:28674' '/home/vtjnash/julia/usr/bin/julia'