rtk golangci-lint broken with golangci-lint v2 (injects removed --out-format flag)

[bnema]

Bug

rtk golangci-lint run ./... fails on golangci-lint v2 with a misleading error:

golangci-lint (JSON parse failed: EOF while parsing a value at line 1 column 0)

Running with -v shows that the wrapper injects --out-format=json, which was removed in golangci-lint v2:

Running: golangci-lint run --out-format=json
Error: unknown flag: --out-format

The subprocess exits before producing any JSON output, and rtk tries to parse the empty stdout, which causes the EOF parse error.

Running golangci-lint directly works fine:

$ /usr/bin/golangci-lint version
golangci-lint has version 2.11.3 built with go1.26.1

$ /usr/bin/golangci-lint run ./...
0 issues.

References

• Migration guide on --out-format removal
• v2 CLI docs for run command flags

Environment

• rtk: latest
• golangci-lint: 2.11.3
• OS: Linux