mold not generate debug symbols on mac m1

[gfreezy]

How to reproduce:

cargo new --bin test-mold
cd test-mold
env RUSTFLAGS="-C link-arg=-fuse-ld=/opt/homebrew/bin/ld64.mold" cargo build

dsymutil -s target/debug/test-mold|grep N_OSO

dsymutil outputs no content.

mold version: mold 1.4.1 (800d246ec3b74aaf6a29850fff542c3bd070437f; compatible with GNU ld)