can't build on arch

 Finished `release` profile [optimized] target(s) in 59.10s
==> Entering fakeroot environment...
==> Starting package()...
install: cannot stat 'target/x86_64-unknown-linux-gnu/release/app_grid': No such file or directory
==> ERROR: A failure occurred in package().
    Aborting...
error: failed to build 'stardust-xr-protostar-0.1.0-2': 
error: packages failed to build: stardust-xr-protostar-0.1.0-2

 Finished `release` profile [optimized] target(s) in 59.10s
==> Entering fakeroot environment...
==> Starting package()...
install: cannot stat 'target/x86_64-unknown-linux-gnu/release/app_grid': No such file or directory
==> ERROR: A failure occurred in package().
    Aborting...
error: failed to build 'stardust-xr-protostar-0.1.0-2': 
error: packages failed to build: stardust-xr-protostar-0.1.0-2