Adding VersionStream for ztunnel-1.29

[octo-sts]

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[octo-sts]

🔢 Build Failed: Dependency Version Mismatch

failed to select a version for the requirement lru = "^0.14" candidate versions found which didn't match: 0.16.3 location searched: crates.io index required by package pingora-pool v0.6.0 ... which satisfies dependency pingora-pool = "^0.6" (locked to 0.6.0) of package ztunnel v0.0.0 (/home/build)

Build Details

Category	Details
Build System	rust/cargo
Failure Point	cargobump dependency update during rust/cargobump step

Root Cause Analysis 🔍

Version conflict during dependency update - cargobump attempted to update the 'lru' package from version 0.14.0 to 0.16.3, but the pingora-pool v0.6.0 dependency requires lru ^0.14 (compatible with 0.14.x but not 0.16.x). This is a semantic versioning incompatibility where the major version change from 0.14 to 0.16 introduces breaking changes that are not compatible with the existing dependency constraints.

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🔍 Build failure fix suggestions

Found similar build failures that have been fixed in the past and analyzed them to suggest a fix:

Suggested Changes

File: Cargo.toml

• addition at line after line with pprof modification (After the pprof modification section)
  Replacement:

# Pin lru to 0.14.x to maintain compatibility with pingora-pool v0.6.0
      sed -i '/\[dependencies\]/a lru = "0.14"' Cargo.toml

Content:

Add explicit lru dependency constraint to prevent incompatible version updates

File: The Melange YAML pipeline section

• modification at line Before the build environment setup (Before the cargo auditable build command)
  Original:

  - runs: |
      export ZTUNNEL_BUILD_buildStatus=clean

Replacement:

  - runs: |
      # Pin lru dependency to maintain compatibility with pingora-pool
      echo 'lru = "0.14"' >> Cargo.toml
      
  - runs: |
      export ZTUNNEL_BUILD_buildStatus=clean

Content:

Add dependency constraint to prevent lru version conflict

Click to expand fix analysis

Analysis

No similar build failures were found in the historical data, so I'm analyzing this as a new Rust dependency version conflict issue. The error indicates that the rust/cargobump step attempted to update the lru crate from version 0.14.0 to 0.16.3, but the pingora-pool v0.6.0 dependency has a constraint requiring lru = "^0.14" which is incompatible with the 0.16.x major version due to semantic versioning rules. This type of issue typically requires either downgrading the problematic dependency or finding an alternative approach to handle the version conflict.

Click to expand fix explanation

Explanation

The fix addresses the root cause of the dependency version conflict by explicitly constraining the lru crate to version 0.14.x before the rust/cargobump step runs. This prevents cargobump from attempting to update lru to version 0.16.3, which would be incompatible with pingora-pool v0.6.0's requirement for lru = "^0.14". By adding the constraint early in the pipeline, we ensure that dependency resolution respects the existing compatibility requirements. The semantic versioning conflict occurs because the jump from 0.14 to 0.16 represents breaking changes that pingora-pool hasn't been updated to handle yet. This approach maintains compatibility while allowing other dependencies to be updated normally by cargobump.

Click to expand alternative approaches

Alternative Approaches

• Skip the rust/cargobump step entirely and rely on the existing Cargo.lock file for dependency versions
• Modify the cargobump configuration to exclude the lru crate from automatic updates using cargo-edit allow lists
• Update to a newer version of pingora-pool that supports lru 0.16.x if available upstream
• Use cargo-edit to selectively update only non-conflicting dependencies instead of using cargobump

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