### CONTEXT (Previous Events):
<system_output timestamp="2537.8319">I: Configuring tasksel-data...
</system_output>
<system_output timestamp="2537.868235">I: Configuring libc-bin...
</system_output>
<system_output timestamp="2537.957743">I: Base system installed successfully.
</system_output>
<system_output timestamp="2538.189282">Creating base.tar.xz
</system_output>
<system_output timestamp="2539.363092">Warning: no hostname for 172.16.0.17 found, not adding to /etc/hosts.
</system_output>
<system_output timestamp="2539.365974">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2539.368936">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2539.369947">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2539.567941">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="2539.809331">Get:2 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 Packages [8680 kB]
</system_output>
<system_output timestamp="2542.134282">Fetched 8831 kB in 3s (3356 kB/s)
Reading package lists...</system_output>
<system_output timestamp="2543.201623">
</system_output>
<system_output timestamp="2545.546949">Reading package lists...</system_output>
<system_output timestamp="2545.579523">
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="2545.585424">Building dependency tree...</system_output>

Answer: 2545.585424, new event