`make[1]: Circular libuv.a <- libuv.a dependency dropped.`

[huonw]

On a normal invocation of make I see:

compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so
make[1]: Entering directory `/home/huon/rust/build/x86_64-unknown-linux-gnu/rt/libuv'
make[1]: Circular libuv.a <- libuv.a dependency dropped.
  COPY libuv.a
make[1]: Leaving directory `/home/huon/rust/build/x86_64-unknown-linux-gnu/rt/libuv'

The build does proceed as normal, and it all works fine.