argunix: pushing drv closure to `eu` failed:
`nix copy` exited Some(1) (direction="to"): copying 23 paths...
copying path '/nix/store/1amwanizjaisdbrnz3bgy1nl38safyyi-Cargo.lock.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/23mxyzy5b3zbms2nk1j557wcgwv9m8kp-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/5cj67zjiqb2njj0cacvvdhxh8dhka57i-download-socket2-0.5.10.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/3s7gjgyl3dqxkz1qpsc06mgyh9n2mc6k-unpack-socket2-0.5.10.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/5zrc4126j1mil3ksqnixiqam8swk0v40-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/arc6aj6r0d2mwgbkrjp0b34qzix308q1-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/c852kby99dq1qm8lc8m265nax4kbgxx4-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/c87vmvzvvlhkc0pxjs5hsiax9jmxjbz4-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/vpjj2yj4kan384q3ly3h2vy9118g9sb1-crates-io-dependencies.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/f4ryq0vw48rmr94axnh37aqhbva8ydgz-config.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/ks1iwrzlfsnfdpjy1rwr8n3an441ml8h-source' to 'ssh-ng://localhost'...
copying path '/nix/store/hna27vvy85a8z2ly7hqi5v8pnf4cmaxq-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/ifmy1z3f0gj364ds1w04yyd3jzvfb9jj-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/jzby82yyn6daxvbvgv6phf2psjlkckpy-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/m8k01ikx4vjlizha188amy09i9hahw75-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/mq5sfjl2ynky0fmapl1dc9l7lllf171s-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/p4w3fr02rr42cp5dyiqjdrcygiwzybrk-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/qqcb25slh6l03dd02rjvd7n2cnlq4gvm-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/vfwc0fyy7gjdd99fggv6jyrziya99iax-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/z3pxpyszbpn7hibc2gb31snspsqdifsh-Cargo.toml.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/p6f3fjaa9xbpgx8j87k786ky1z3dcg3r-dummy-src.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/myvhpqjiwk5dh3rwq5cd3bks2s1sildl-argunix-cargo-tests-deps-unknown.drv' to 'ssh-ng://localhost'...
copying path '/nix/store/dca61n13ndxp84rrnmymhk68vndcad30-argunix-cargo-tests-unknown.drv' to 'ssh-ng://localhost'...
error: Nix daemon disconnected unexpectedly (maybe it crashed?)

argunix: drv=/nix/store/dca61n13ndxp84rrnmymhk68vndcad30-argunix-cargo-tests-unknown.drv