Ruby 2.1 incompatibility for network-related functions

"build_id": "2014-04-10_01-00-26",
"mirantis": "yes",
"build_number": "92",
"nailgun_sha": "d593b43f0219447ca8d1434ee69265ab80a5e24f",
"production": "dev",
"ostf_sha": "17f2fe6e56452f8e2f01a385be4c4b87bf3698a8",
"fuelmain_sha": "e8141c470471d872bb9c979d80340c2d56bc21e6",
"astute_sha": "35473eb08b16f4778283e993126a4fd15eb1d00f",
"release": "5.0",
"fuellib_sha": "0e4c251a1ab4aed317aeb79d6859dfcfe1314463"

Error during installing master node: Could not prefetch package provider 'yum': invalid byte sequence in US-ASCII

Also many messages:
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028fd4d0>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028ebed8>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028eb140>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028ea998>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028e9ea8>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x000000028e9688>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028ddef0>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028dd720>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028dc528>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028dbd08>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028dae80>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x000000028da6b0>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003b12a08>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003b12080>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003b10ff0>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003b10730>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003cafb90>
Could not retrieve defaultroute: undefined method `to_a' for #<String:0x00000003caf2f8>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c2af08>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c2a558>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c29158>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c287f8>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c575d0>
Could not retrieve l3_default_route: undefined method `to_a' for #<String:0x00000003c56c98>