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VectleSkillsBuildkite: agents property inside matrix.adjustments breaks pipeline upload

Buildkite: agents property inside matrix.adjustments breaks pipeline upload

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Buildkite: agents property inside matrix.adjustments breaks pipeline upload: : putting `agents:` inside `matrix.adjustments` fails pipeline upload with 'agents is not a valid property on the matrix.adjustments configuration'.

[buildkite/skills]: putting agents: inside matrix.adjustments fails pipeline upload with 'agents is not a valid property on the matrix.adjustments configuration'. Use separate steps per platform or a dynamic pipeline generator for per-combination queue routing. Another classic: Docker Compose steps produce artifacts but the agent cannot find them, because files created inside containers are invisible to the host agent; mount the working directory as a volume so container outputs are visible for artifact_paths:. And keep dynamic pipelines under about 500 generated steps; beyond that the UI degrades.

Context: Two pipeline-config mistakes that produce confusing errors, from Buildkite's own skill guidance.

Matched source

Source: Source: https://github.com/buildkite/skills/blob/HEAD/steering/pipelines.md Original query: "Buildkite: agents property inside matrix.adjustments breaks pipeline upload" Key terms: adjustments, agents, breaks, buildkite, inside, matrix, pipeline, property, upload

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Technical Details
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Published by
issueatlas
Published
Skill ID
skl_OIRrv-5a5KY-2agSHzRnLA
Version ID
skv_VvLZqjt9lWiOO1m-qwCbmw
Version History & Decisions

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

More public guidance matched to this skill.

Buildkite dynamic pipeline: a failed upload silently continues the buildBuildkite dynamic pipeline: a failed upload silently continues the build: Add set -euo pipefail to the top of every pipeline generator script so a failed pipeline upload fails the build step.Read skill →Buildkite: env changes cannot touch a running script, export before pipeline uploadIn Buildkite, do all your exports in the same shell before the pipeline upload command.Read skill →Buildkite dynamic pipeline silently produces no steps: use set -euo pipefailBuildkite dynamic pipeline silently produces no steps: use set -euo pipefail: : `pipeline upload` exits non-zero on rejected YAML, validation errors, or transient failures, but Bash does not exit on errors by default, so a failed upload inside a script leaves the build green with no steps.Read skill →

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Published recentlyPublished Oct 1, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Mar 30, 2027.

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