fix(infra): avoid huge warp backtraces in aggregator and relay logs

[jpraynaud]

Content

This PR includes a fix for multi-megabyte log entries emitted by the aggregator and relays when an error is logged from a warp route.

Since Rust 1.97.0, the v0 symbol mangling scheme is the default: backtrace frames now embed the fully monomorphized type of warp's route tree, inflating each frame to ~65 KB. With RUST_BACKTRACE=1, anyhow captures such a backtrace on every error, producing log entries of over 2 MB.

• Add RUST_LIB_BACKTRACE=0 to the aggregator and relay docker compose files: this disables anyhow error backtraces while keeping full panic backtraces from RUST_BACKTRACE=1
• Error logs keep the anyhow context chain
• The signer is left unchanged as it does not embed warp (only the signer test relay is updated)
• Add RUST_LIB_BACKTRACE=0 to the end to end test

Pre-submit checklist

• Branch
  • Crates versions are updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • All check jobs of the CI have succeeded
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested

Issue(s)

Relates to #3271

[github-actions]

Test Results

     5 files  ±0     209 suites  ±0   59m 29s ⏱️ + 4m 26s
 3 330 tests ±0   3 330 ✅ ±0  0 💤 ±0  0 ❌ ±0 
11 090 runs  ±0  11 090 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit d3f4c07. ± Comparison against base commit bf1c9b3.

♻️ This comment has been updated with latest results.

[Copilot]

Pull request overview

This PR addresses multi-megabyte log entries caused by anyhow capturing extremely large warp route-tree backtraces (notably since Rust 1.97 / v0 symbol mangling), by disabling library backtraces in the affected container environments while preserving panic backtraces.

Changes:

• Bump infra asset version from 0.5.17 to 0.5.18.
• Add RUST_LIB_BACKTRACE=0 to aggregator and relay-related docker-compose environments to prevent anyhow backtrace capture.
• Apply the same RUST_LIB_BACKTRACE=0 setting to the signer relay docker-compose override as well.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
mithril-infra/assets/infra.version	Bumps infra asset version to reflect the rollout of the backtrace logging mitigation.
mithril-infra/assets/docker/docker-compose-signer-p2p-base-no-dmq-override.yaml	Disables library backtraces for the signer relay container via environment variable.
mithril-infra/assets/docker/docker-compose-aggregator-p2p-base-override.yaml	Disables library backtraces for the aggregator relay container via environment variable.
mithril-infra/assets/docker/docker-compose-aggregator-base.yaml	Disables library backtraces for the aggregator container via environment variable.