roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/21422002?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/21422002?buildTab=artifacts#/cdc/frontier-persistence-benchmark/interval=30s/tables=1/ranges=10000) on release-25.4.14-rc @ [d4564e40f2d5b1ab8e6c07b219bf72fbe9c07d04](https://github.com/cockroachdb/cockroach/commits/d4564e40f2d5b1ab8e6c07b219bf72fbe9c07d04):

```
test cdc/frontier-persistence-benchmark/interval=30s/tables=1/ranges=10000 failed: (test_runner.go:891).func4: in provider: aws: aws create failed due to capacity for machine type m6id.4xlarge in zone(s) [us-east-2c]; suggested zone(s): [us-east-2a us-east-2b]: failed to run: aws ec2 run-instances --associate-public-ip-address --count 1 --instance-type m6id.4xlarge --image-id ami-0e83be366243f524a --key-name teamcity-runner-1RwTZFp1RUGn-mxFWkesdiOuF8k= --region us-east-2 --security-group-ids sg-04d72b57e29d671f1 --subnet-id subnet-0e71591c1fe06645e --tag-specifications ResourceType=instance,Tags=[{Key=usage,Value=roachtest},{Key=roachtest-branch,Value=release-25-4-14-rc},{Key=arch,Value=amd64},{Key=created,Value=2026-07-14T11:42:06Z},{Key=Name,Value=teamcity-21422002-1784028244-17-n4cpu16-0003},{Key=Cluster,Value=teamcity-21422002-1784028244-17-n4cpu16},{Key=spot,Value=true},{Key=roachprod,Value=true},{Key=cluster,Value=teamcity-21422002-1784028244-17-n4cpu16},{Key=lifetime,Value=12h0m0s}] ResourceType=volume,Tags=[{Key=usage,Value=roachtest},{Key=roachtest-branch,Value=release-25-4-14-rc},{Key=arch,Value=amd64},{Key=created,Value=2026-07-14T11:42:06Z},{Key=Name,Value=teamcity-21422002-1784028244-17-n4cpu16-0003},{Key=Cluster,Value=teamcity-21422002-1784028244-17-n4cpu16},{Key=spot,Value=true},{Key=roachprod,Value=true},{Key=cluster,Value=teamcity-21422002-1784028244-17-n4cpu16},{Key=lifetime,Value=12h0m0s}] --user-data file:///tmp/aws-startup-script1303034901 --iam-instance-profile Name=roachprod-testing --block-device-mapping file:///tmp/aws-block-device-mapping68353166 --instance-market-options MarketType=spot,SpotOptions={SpotInstanceType=one-time,InstanceInterruptionBehavior=terminate} --output json: stderr:
An error occurred (InsufficientInstanceCapacity) when calling the RunInstances operation (reached max retries: 2): We currently do not have sufficient m6id.4xlarge capacity in the Availability Zone you requested (us-east-2c). Our system will be working on provisioning additional capacity. You can currently get m6id.4xlarge capacity by not specifying an Availability Zone in your request or choosing us-east-2a, us-east-2b.: exit status 254 [owner=test-eng]
```

Parameters:
- cloud=aws
- coverageBuild=false
- cpu=16
- runtimeAssertionsBuild=false
- ssd=0
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

Same failure on other branches

- #172506 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.22-rc]
- #172191 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.4]
- #172020 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2]
- #171624 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-26.1.6-rc]
- #171623 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.4.12-rc]
- #171620 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.20-rc]
- #171526 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.1.30-rc]

/cc @cockroachlabs/test-eng

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*cluster_creation.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-65755

Start with the roachtest README and the linked TeamCity log for the AWS cluster_creation failure. Compare this report with the related failures in issues #172506, #172191, #172020, #171624, #171623, and #171620 to determine the expected handling of insufficient m6id.4xlarge capacity; done means the recurring failure has an agreed resolution and no longer blocks these runs.

Written by the indexing model from the issue text.