rust/rust-bors.toml at main · rust-lang/rust · GitHub

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# 6 hours timeout for CI builds
timeout = 21600

# Do not allow approving PRs with certain labels
labels_blocking_approval = [
    # Waiting for an FCP to finish
    "final-comment-period",
    "proposed-final-comment-period",
    # PRs that were closed or postponed by an FCP
    "disposition-close",
    "disposition-postpone",
    # Waiting for library ACP
    "S-waiting-on-ACP",
    "S-waiting-on-concerns",
    "S-waiting-on-crater",
    "S-waiting-on-fcp",
    "S-waiting-on-MCP",
    "S-waiting-on-t-lang",
    "S-waiting-on-t-compiler",
    "S-waiting-on-t-libs",
    "S-waiting-on-t-types",
    "S-waiting-on-t-opsem",
    "S-waiting-on-t-rustdoc",
    "S-waiting-on-t-rustdoc-frontend",
    "S-waiting-on-t-clippy",
    # PR manually set to blocked
    "S-blocked",
    # Needs a Crater run before being approved
    "needs-crater",
    # Needs a formal decision to be made
    "needs-rfc",
    "needs-fcp",
    "needs-acp",
    "needs-mcp",
    # A PR in the Rust reference must be done first
    "needs-reference-pr"
]

# If CI runs quicker than this duration, consider it to be a failure
min_ci_time = 600

merge_queue_enabled = true
report_merge_conflicts = true

[labels]
approved = [
    "+S-waiting-on-bors",
    "-S-blocked",
    "-S-waiting-on-author",
    "-S-waiting-on-crater",
    "-S-waiting-on-review",
    "-S-waiting-on-team",
]
unapproved = [
    "+S-waiting-on-author",
    "-S-blocked",
    "-S-waiting-on-bors",
    "-S-waiting-on-crater",
    "-S-waiting-on-review",
    "-S-waiting-on-team",
]
try_failed = [
    "+S-waiting-on-author",
    "-S-waiting-on-review",
    "-S-waiting-on-crater",
]
auto_build_succeeded = [
    "+merged-by-bors",
    "-S-waiting-on-bors",
]
auto_build_failed = [
    "+S-waiting-on-review",
    "-S-blocked",
    "-S-waiting-on-bors",
    "-S-waiting-on-author",
    "-S-waiting-on-crater",
    "-S-waiting-on-team",
]

# Enable management of EC2 self-hosted runners
[ec2_runners]
runner_group_id = 8
label_prefix = "ec2"
region = "us-east-2"
images = {
    "x86_64ami" = "latest-gha-runner-ami",
    "arm64ami" = "latest-gha-runner-ami-arm64",
}
jit_runner = "organization"
allowed_instances = [
    # AMD Zen 5 (x86_64) instances, a subset of these is used in production.
    # Prices per hour of on-demand compute in us-east-2 (as of Aug 2026)
    # See rough assessment of build speed for dist-x86_64-quick in https://github.com/rust-lang/simpleinfra/issues/1132
    # m8a.2x     8 vCPU, 32 GB   $0.48688/hr
    # c8a.4x    16 vCPU, 32 GB   $0.86216/hr
    # c8a.8x    32 vCPU, 64 GB   $1.72432/hr
    # c8a.12x   48 vCPU, 96 GB   $2.58648/hr
    # CodeBuild 36 vCPU          $4.78799/hr
    "m8a.2xlarge",
    "c8a.4xlarge",
    "c8a.8xlarge",
    "c8a.12xlarge",

    # Graviton 4 (aarch64) instances, currently just for experimentation
    "m8g.2xlarge",
    "c8g.4xlarge",
    "c8g.8xlarge",
    "c8g.12xlarge",

    # Graviton 5 (aarch64) instances, currently just for experimentation
    "m9g.2xlarge",
    "c9g.4xlarge",
    "c9g.8xlarge",
    "c9g.12xlarge",
]

# Enable unrolling of rollup member PRs after rollup merge
[unroll]