$ ./target/debug/omdb --dns-server [::1]:34590 db sleds | head -n 0
head: Invalid "-n 0" option
usage: head [-q] [-v] [-n #] [-c #] [-#] [filename...]
note: database URL not specified.  Will search DNS.
note: (override with --db-url or OMDB_DB_URL)
note: using database URL postgresql://root@[::1]:59338/omicron?sslmode=disable
WARN: found schema version 150.0.0, expected 148.0.0
It's possible the database is running a version that's different from what this
tool understands.  This may result in errors or incorrect output.
note: listing all commissioned sleds (use -F to filter, e.g. -F in-service)

thread 'main' panicked at library/std/src/io/stdio.rs:1165:9:
failed printing to stdout: Broken pipe (os error 32)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Jun 17 16:59:48.837 ERRO Pool dropped without invoking `terminate`. qorb background tasks
                 should be cancelled, but they may briefly still be initializing connections

dap@castle /staff/dock/rack2/mupdate-20250613 $ mdb /staff/core/dogfood-mupdate-20250613/14/core.oxz_switch.omdb.4133.1749654363
Loading modules: [ libumem.so.1 libnvpair.so.1 libc.so.1 ld.so.1 ]
> $G
C++ symbol demangling enabled
> $C 
fffff5ffffde9cd0 libc.so.1`_lwp_kill+0xa()
fffff5ffffde9d00 libc.so.1`raise+0x22(6)
fffff5ffffde9d50 libc.so.1`abort+0x58()
fffff5ffffde9d60 ~panic_abort::__rust_start_panic::abort::h349954c3ed15731c+8()
fffff5ffffde9d70 ~__rustc::__rust_start_panic+8()
fffff5ffffde9dd0 __rustc::rust_panic+0xd()
fffff5ffffde9e90 std::panicking::rust_panic_with_hook::hb99087f77e1043a2+0x22f()
fffff5ffffde9ed0 std::panicking::begin_panic_handler::{{closure}}::hdc6b5764a1eb26a4+0x98()
fffff5ffffde9ee0 ~std::sys::backtrace::__rust_end_short_backtrace::h2fdfec1ded489945+8()
fffff5ffffde9f10 ~__rustc::rust_begin_unwind+0x1b()
fffff5ffffde9f40 ~core::panicking::panic_fmt::h84330e1efd4e6522+0x1e()
fffff5ffffde9fd0 std::io::stdio::_print::h4cfd8b3a3c3cdb51+0xcc()
fffff5ffffdeae70 omdb::db::cmd_crucible_dataset_list::{{closure}}::he1e92ce8334d6568+0x45a()
fffff5ffffded0f0 omdb::main::_$u7b$$u7b$closure$u7d$$u7d$::h1ae782f3e11650e1 +0x7c39()
fffff5ffffdee4d0 tokio::runtime::park::CachedParkThread::block_on::h1b17cbb1ecc3507e+0xb3()
fffff5ffffdef8c0 tokio::runtime::context::runtime::enter_runtime::h6c358638de65487c+0x13d()
fffff5ffffdf2100 omdb::main::hcddea64eae948ab8+0xce()
fffff5ffffdf2110 std::sys::backtrace::__rust_begin_short_backtrace::h1826ce7cb0fec08e+6()
fffff5ffffdf2170 std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::hd4a90b26aceba257 +0x11()
fffff5ffffdf2210 std::rt::lang_start_internal::hcda8dc089aca4d48+0x3af()
fffff5ffffdf2230 main+0x2c()
fffff5ffffdf2260 _start_crt+0x87()
fffff5ffffdf2270 _start+0x18()
> ::status
debugging core file of omdb (64-bit) from oxz_switch
initial argv: omdb db crucible-dataset list
threading model: native threads
status: process terminated by SIGABRT (Abort), pid=4133 uid=0 code=-1