chroot: failed to run command `/bin/bash': No such file or directory

strace will help you!

# LANG= strace -s100 -f -e trace=open chroot . ./lib64/ld-2.12.so  /bin/bash
...
open("/lib64/libtinfo.so.5", O_RDONLY)  = -1 ENOENT (No such file or directory)
open("/lib64/tls/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/tls/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib64/libtinfo.so.5", O_RDONLY)  = -1 ENOENT (No such file or directory)
open("/usr/lib64/tls/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/tls/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory)
/bin/bash: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory

You need to install libtinfo into chroot in this example.