icu-devtools-dbg 57.1-4 (arm64 binary) in ubuntu yakkety

 ICU is a C++ and C library that provides robust and full-featured
 Unicode and locale support. This package contains programs used to
 manipulate data files found in the ICU sources and is a dependency of
 libicu-dev. End users would generally not need to install this package.
 .
 This package contains debugging symbols for icu-devtools.