RequiredUseDefaults: version 2.4.4: profile: 'default/linux/x86/17.0' (37 total) failed REQUIRED_USE: cpu_flags_x86_sse2
  DeadUrl: version 2.5.1: SRC_URI: HTTPSConnectionPool(host='downloads.sourceforge.net', port=443): Read timed out. (read timeout=5.0): https://downloads.sourceforge.net/project/bowtie-bio/bowtie2/2.5.1/bowtie2-2.5.1-source.zip
  RequiredUseDefaults: version 2.5.1: profile: 'default/linux/x86/17.0' (37 total) failed REQUIRED_USE: cpu_flags_x86_sse2