S 0:00.00 | `-- /usr/pkg/bin/cargo rustc
                   --release --frozen --manifest-path /tmp/www/firefox102/work/firefox-1

gdb attach 26168
...
(gdb) bt                                                                                                                                                    
#0  0x00007f7e9100c3aa in ___lwp_park60 () from /usr/libexec/ld.elf_so                                                                                      
#1  0x00007f7e91001595 in _rtld_shared_enter () from /usr/libexec/ld.elf_so                                                                                 
#2  0x00007f7e91000b9b in _rtld_bind () from /usr/libexec/ld.elf_so                                                                                         
#3  0x00007f7e910007fd in _rtld_bind_start () from /usr/libexec/ld.elf_so                                                                                   
#4  0x0000000000000206 in ?? ()                                                                                                                             
#5  0x00006fece0e87d5a in dup2 () from /usr/lib/libc.so.12                                                                                                  
#6  0x00006fece0f06cf9 in je_jemalloc_prefork () from /usr/lib/libc.so.12                                                                                   
#7  0x00006fece2c41400 in ?? ()                                                                                                                             
#8  0x000000000000009c in ?? ()                                                                                                                             
#9  0x00006fece180a010 in pthread_sigmask () from /usr/lib/libpthread.so.1                                                                                  
#10 0x00000000078b7349 in std::sys::unix::process::process_inner::<impl std::sys::unix::process::process_common::Command>::do_exec ()                       
#11 0x00000000078b6ae8 in std::sys::unix::process::process_inner::<impl std::sys::unix::process::process_common::Command>::spawn ()                         
#12 0x00000000078bd85d in std::process::Command::spawn ()                                                                                                   
#13 0x0000000007892f68 in _RNvMs_NtCsjUqB4JSTq2M_10cargo_util15process_builderNtB4_14ProcessBuilder19exec_with_streaming ()                                 
#14 0x00000000074a6ccd in _RNvXs_NtNtCsg2hJkdK9ygB_5cargo4core8compilerNtB4_15DefaultExecutorNtB4_8Executor4exec ()                                         

#15 0x00000000072092ed in
 _RNSNvYNCNvNtNtCsg2hJkdK9ygB_5cargo4core8compiler5rustcs0_0INtNtNtCsZYKxwOXNSt_4core3ops8function6FnOnceTRNtNtB8_9job_queue8
 JobStateEE9call_once6vtableBc_.llvm.16194771563675763117 ()

#16 0x0000000007207a9c in
 _RNSNvYNCNvMNtNtNtCsg2hJkdK9ygB_5cargo4core8compiler3jobNtB9_4Work4then0INtNtNtCsZYKxwOXNSt_4core3ops8function6FnOnceTRNtNtB
 b_9job_queue8JobStateEE9call_once6vtableBf_.llvm.16194771563675763117
 ()

#17 0x0000000007207a9c in
 _RNSNvYNCNvMNtNtNtCsg2hJkdK9ygB_5cargo4core8compiler3jobNtB9_4Work4then0INtNtNtCsZYKxwOXNSt_4core3ops8function6FnOnceTRNtNtB
 b_9job_queue8JobStateEE9call_once6vtableBf_.llvm.16194771563675763117
 ()

#18 0x000000000731bd3b in
 _RNSNvYNCINvMs1_NtCsgkX0uWUCQW8_15crossbeam_utils6threadNtBd_19ScopedThreadBuilder5spawnNCNvMs2_NtNtNtCsg2hJkdK9ygB_5cargo4c
 ore8compiler9job_queueNtB1v_10DrainState3runs_0uE0INtNtNtCsZYKxwOXNSt_4core3ops8function6FnOnceuE9call_once6vtableB1B_
 ()

#19 0x00000000075df26e in
_RINvNtNtCsiswA29uyhDg_3std10sys_common9backtrace28___rust_begin_short_backtraceINtNtCsiFWkucN7cMJ_5alloc5boxed3BoxDINtNtNtC
sZYKxwOXNSt_4core3ops8function6FnOnceuEp6OutputuNtNtB1W_6marker4SendEL_EuECsg2hJkdK9ygB_5cargo
() --Type <RET> for more, q to quit, c to continue without paging--

#20 0x00000000074f045a in
 _RNSNvYNCINvMNtCsiswA29uyhDg_3std6threadNtBa_7Builder16spawn_unchecked_INtNtCsiFWkucN7cMJ_5alloc5boxed3BoxDINtNtNtCsZYKxwOXNS
 t_4core3ops8function6FnOnceuEp6OutputuNtNtB1N_6marker4SendEL_EuEs_0IB1H_uE9call_once6vtableCsg2hJkdK9ygB_5cargo
 ()

#21 0x00000000078b61a3 in std::sys::unix::thread::Thread::new::thread_start ()                                                                              
#22 0x00006fece180c072 in ?? () from /usr/lib/libpthread.so.1                                                                                               
#23 0x00006fece0e87af0 in ?? () from /usr/lib/libc.so.12                                                                                                    
#24 0x0000000000000000 in ?? ()                                                                                                                             
(gdb) quit                                                                                                                                                  
A debugging session is active.

        Inferior 1 [process 26168] will be detached.                                                                                                        

Quit anyway? (y or n) y                                                                                                                                     
Detaching from program: /usr/pkg/bin/cargo, process 26168                                                                                                   
[Inferior 1 (process 26168) detached]