### CONTEXT (Previous Events):
<system_output timestamp="855.08385">Reading state information...
</system_output>
<system_output timestamp="855.28505">Reading extended state information...
</system_output>
<system_output timestamp="855.307789">Initializing package states...
</system_output>
<system_output timestamp="855.832072">Writing extended state information...
</system_output>
<system_output timestamp="856.089155">Building tag database...
</system_output>
<system_output timestamp="856.662537">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="856.740704">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="856.745892">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="856.749388">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="856.789126">Get: 4 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 postgresql-15 i386 15.8-0+deb12u1 [17.0 MB]
</system_output>
<system_output timestamp="857.213377">Get: 5 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 postgresql all 15+248 [10.1 kB]
</system_output>
<system_output timestamp="857.21531">Fetched 19.0 MB in 0s (39.0 MB/s)
</system_output>
<system_output timestamp="857.314035">install_packages: executing  aptitude -R -d -o Aptitude::Log=/dev/null -o Aptitude::CmdLine::Ignore-Trust-Violations=yes -o APT::Get::AllowUnauthenticated=true -o Acquire::AllowInsecureRepositories=true -o DPkg::force-conflicts::=yes -o Dir::State=/usr/fai/mirror/aptcache/var/lib/apt -o Dir::Log=/usr/fai/mirror/aptcache/var/log/apt -o Dir::State::extended_states=/usr/fai/mirror/aptcache/var/lib/apt/lists/extended_states -o Dir::State::status=/usr/fai/mirror/aptcache/statefile -o Dir::Cache=/usr/fai/mirror/aptcache/var/cache/apt -o Dir::State=/usr/fai/mirror/aptcache/var/cache/apt -o Dir::Cache::Archives=/usr/fai/mirror/aptcache/var/cache/apt/archives -o Dir::Etc=/usr/fai/mirror/aptcache/etc/apt/ -o Dir::State::Lists=/usr/fai/mirror/aptcache/var/lib/apt/lists/ -y install multipath-tools
</system_output>
<system_output timestamp="857.361133">Reading package lists...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="857.616836">Building dependency tree...
</system_output>

Answer: 857.616836, old event