+> target=/nix/store/nfw6wn6cxmikcpz9vam76w3sjgvpi9i3-libc.a-builder 
 +> mkdir -p /nix/store/nfw6wn6cxmikcpz9vam76w3sjgvpi9i3-libc.a-builder. 
 +> cp /build/.attr-1lf969yddshzhld7sr1vbagr07bnygg99lgl6gk5kxcnp4z9wbcq /nix/store/nfw6wn6cxmikcpz9vam76w3sjgvpi9i3-libc.a-builder