False Positives in CI

[andig]

Welcome

• Yes, I'm using a binary release within 2 latest releases. Only such installations are supported.
• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've read the typecheck section of the FAQ.
• Yes, I've tried with the standalone linter if available (e.g., gocritic, go vet, etc.).
• I agree to follow this project's Code of Conduct

How did you install golangci-lint?

Official GitHub Action

Description of the problem

Since 2.6.0 I'm seing various false positives: https://github.com/evcc-io/evcc/actions. I suspect golangci-lint since the positives include vet and gci, independent of any code changes. Latest example is https://github.com/evcc-io/evcc/actions/runs/18933135220/job/54053788167 where generated files are linted.

I did not try linters standalone since multiple affected and no code changes. I'm also- which is confusing- not able to replicate the errors locally with 2.6..0.

Version of golangci-lint

$ golangci-lint --version
# Paste output here

Configuration

# paste configuration file or CLI flags here

Go environment

$ go version && go env
# paste output here

Verbose output of running

prepare environment
  Checking for go.mod: go.mod
  Cache hit for: golangci-lint.cache-Linux-2913-405228c3a5ed00c4494c94858156e3b1fb7815c3
  Cache Size: ~0 MB (303045 B)
  /usr/bin/tar -xf /home/runner/work/_temp/53e6732d-1b2a-4561-91db-8e21a1d0e6a8/cache.tzst -P -C /home/runner/work/evcc/evcc --use-compress-program unzstd
  Cache restored successfully
  Restored cache for golangci-lint from key 'golangci-lint.cache-Linux-2913-405228c3a5ed00c4494c94858156e3b1fb7815c3' in 470ms
  Finding needed golangci-lint version...
  Requested golangci-lint 'latest', using 'v2.6.0', calculation took 36ms
  Installation mode: binary
  Installing golangci-lint binary v2.6.0...

A minimal reproducible example or link to a public repository

// add your code here

Validation

• Yes, I've included all information above (version, config, etc.).

Supporter

• I am a sponsor/backer through GitHub or OpenCollective

[andig]

The last "good" run we've had on CI was yesterday https://github.com/evcc-io/evcc/actions/runs/18914532703/job/53994202670 and that was still on 2.5.0:

Run golangci/golangci-lint-action@v8
prepare environment
run golangci-lint
  Running [/home/runner/golangci-lint-2.5.0-linux-arm64/golangci-lint config path] in [/home/runner/work/evcc/evcc] ...
  Running [/home/runner/golangci-lint-2.5.0-linux-arm64/golangci-lint config verify] in [/home/runner/work/evcc/evcc] ...
  Running [/home/runner/golangci-lint-2.5.0-linux-arm64/golangci-lint run  --timeout 5m] in [/home/runner/work/evcc/evcc] ...
  0 issues.
  
  golangci-lint found no issues
  Ran golangci-lint in 73108ms

I'm stumped why 2.6.0 doesn't fail locally.

[andig]

Local run:

golangci-lint cache clean
golangci-lint run -v
INFO golangci-lint has version 2.6.0 built with go1.25.3 from fb09c37 on 2025-10-29T19:28:07Z 
INFO [config_reader] Config search paths: [./ /Users/a25058/htdocs/evcc /Users/a25058/htdocs /Users/a25058 /Users /] 
INFO [config_reader] Used config file .golangci.yml 
INFO maxprocs: Leaving GOMAXPROCS=12: CPU quota undefined 
INFO [goenv] Read go env for 5.405834ms: map[string]string{"GOCACHE":"/Users/a25058/Library/Caches/go-build", "GOROOT":"/opt/homebrew/Cellar/go/1.25.3/libexec"} 
INFO [lintersdb] Active 19 linters: [durationcheck gci gofmt goimports goprintffuncname govet importas ineffassign makezero misspell nolintlint rowserrcheck sqlclosecheck staticcheck tparallel unconvert unused wastedassign whitespace] 
INFO [loader] Go packages loading at mode 8767 (deps|exports_file|files|compiled_files|imports|name|types_sizes) took 1.738201125s 
INFO [runner/filename_unadjuster] Pre-built 0 adjustments in 55.024667ms 
INFO [linters_context] importas settings found, but no aliases listed. List aliases under alias: key. 
INFO [linters_context/goanalysis] analyzers took 2m49.447069667s with top 10 stages: goimports: 1m6.930374583s, wastedassign: 38.687091667s, unused: 10.831316127s, gci: 8.086298327s, buildssa: 5.540349925s, gofmt: 4.878241127s, misspell: 4.24540513s, unconvert: 4.23386287s, printf: 3.703181733s, ctrlflow: 3.400680012s 
INFO [runner/exclusion_paths] Skipped 0 issues by pattern "third_party$" 
INFO [runner/exclusion_paths] Skipped 0 issues by pattern "builtin$" 
INFO [runner/exclusion_paths] Skipped 0 issues by pattern "examples$" 
INFO [runner/exclusion_rules] Skipped 0 issues by rules: [Path: "third_party$", Linters: "gci, gofmt, goimports"] 
INFO [runner/exclusion_rules] Skipped 0 issues by rules: [Path: "builtin$", Linters: "gci, gofmt, goimports"] 
INFO [runner/exclusion_rules] Skipped 0 issues by rules: [Path: "examples$", Linters: "gci, gofmt, goimports"] 
INFO [runner] Issues before processing: 70, after processing: 0 
INFO [runner] Processors filtering stat (in/out): path_absoluter: 70/70, exclusion_paths: 70/70, invalid_issue: 70/70, path_relativity: 70/70, generated_file_filter: 70/0, cgo: 70/70, filename_unadjuster: 70/70 
INFO [runner] processing took 3.432961ms with stages: generated_file_filter: 3.328875ms, exclusion_paths: 57.834µs, path_relativity: 22.292µs, exclusion_rules: 11.334µs, invalid_issue: 3.208µs, sort_results: 2.708µs, cgo: 1.667µs, path_absoluter: 1.041µs, max_same_issues: 750ns, nolint_filter: 750ns, fixer: 501ns, filename_unadjuster: 417ns, source_code: 375ns, path_prettifier: 250ns, uniq_by_line: 209ns, diff: 207ns, path_shortener: 167ns, max_from_linter: 167ns, max_per_file_from_linter: 125ns, severity-rules: 84ns 
INFO [runner] linters took 17.197287166s with stages: goanalysis_metalinter: 17.193784125s 
0 issues.
INFO File cache stats: 0 entries of total size 0B 
INFO Memory: 191 samples, avg is 1117.5MB, max is 1542.1MB 
INFO Execution took 19.004169167s                 

[ldez]

This is probably a cache issue in the CI.

Can you try to delete the cache?

https://github.com/evcc-io/evcc/actions/caches

[andig]

Still broken:

gh cache delete --all

Then validated in https://github.com/evcc-io/evcc/actions/caches that caches are really nuked. They were.

Then reverted typing gci-lint to 2.5:

git revert e0c51c529d09d69d45efd9fb1deeb0080e885e80
[master 831c7cb3e] Revert "chore: fix golangci-lint 2.5.0"
1 file changed, 1 insertion(+), 1 deletion(-)

Issue is back: https://github.com/evcc-io/evcc/actions/runs/18945701444/job/54096225242

[andig]

However, I'm still consuming >8G caches and build is still using cache:

Run actions/cache@v4
Cache hit for: Linux-go-lint-0ab5c32504fcb99ae580b215740023f6228a9ffac06c86f63eb7666e69ca8e0c
Cache Size: ~843 MB (883704271 B)
/usr/bin/tar -xf /home/runner/work/_temp/97cff2b0-6260-4429-929b-0cd94afbd980/cache.tzst -P -C /home/runner/work/evcc/evcc --use-compress-program unzstd
Cache restored successfully
Cache restored from key: Linux-go-lint-0ab5c32504fcb99ae580b215740023f6228a9ffac06c86f63eb7666e69ca8e0c

This looks like a breakage on GH?

[andig]

Indeed, just re-ran: still getting cache hits with all caches nuked. Opening issue with GH now.

Update #3870653