rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7fe5ac76fa10) = 10136
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x442f00, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fe5ab90c2e0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fe5ab90c2e0}, 8) = 0
wait4(-1, /nix/store/xyx0gcdqx6pn4s904b004bzsf10q34b3-chrootenv:chrootenv.c:140: unshare: Operation not permitted