v0.8.5 moved upstream's own container builders to rust:1.98-slim (#9527) and kept 1.96 only as the declared SOURCE floor - what the crates promise, not what upstream actually builds with. We were pinned at 1.96 and had never compiled this code on it; the local check ran on 1.97. Track upstream instead of trusting the floor, staying on the bookworm variant so the binary's glibc still matches the debian:bookworm-slim runtime stage. CARGO_BUILD_JOBS defaults to 6 because the whole fleet is offline and gw-04 is now both the only reachable x86_64 host and the box serving production, so a build must not take every core from the services running beside it. Built and deployed: clawmates-runtime:v085 reports zeroclaw 0.8.5, health 200 with every component ok including the new relay, pairing survived the recreate, and the claude_cli/kimi_cli slots still resolve alongside upstream's grok_cli. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01WZb5A2kfVfjpdwSochkuHz