It's hard to say "it's untested" when the rustc compiler itself is usually compiled with shared stdlib: $ ldd `which rustc` linux-vdso.so.1 librustc_dr

It's hard to say "it's untested" when the rustc compiler itself is usually compiled with shared stdlib: $ ldd `which rustc` linux-vdso.so.1 librustc_driver-1ca4abb0311ec689.so => /lib64/librustc_driver-1ca4abb0311ec689.so libstd-f1d4d1a0beb2c43e.so => /lib64/libstd-f1d4d1a0beb2c43e.so libc.so.6 => /lib64/libc.so.6 [...]