Skip to content

Sergo - Serena Go Expert #286

Sergo - Serena Go Expert

Sergo - Serena Go Expert #286

Triggered via schedule October 9, 2026 03:54
Status Success
Total duration 16m 5s
Artifacts 6

sergo.lock.yml

on: schedule
Fit to window
Zoom out
Zoom in

Annotations

8 errors, 3 warnings, and 2 notices
agent
TypeAssertExpr nodeFilter flagging single-value pointer-type assertions without ok-check; correctly defers x,_:=v.(T) (ok discarded via blank) to sibling typeassertionokdiscarded, confirmed via reading that linters isTwoValueBlankOkAssertion which flags any discarded-ok regardless of pointer-ness - not a gap, intentional division of labor, testdatas own goodTwoValueUnderscore comment is accurate. FOUND BUG: analyzeTypeAssert(62-75) does `typeAssert.Type.(*ast.StarExpr)` as a syntactic gate and returns early BEFORE pass.TypesInfo is ever consulted, so (a) a type alias to a pointer (type P = *T; v.(P)) is invisible despite go/types resolving P to *types.Pointer transparently, and (b) parenthesized pointer-type syntax v.((*T)) (valid per the assertion grammar Type=TypeLit|(Type)) is invisible since typeAssert.Type becomes *ast.ParenExpr - no UnwrapParenExpr call exists anywhere in the file. This is the FIRST instance of the established paren_unwrap_gap class applying to a Type position instead of a value expression. Zero testdata coverage for either shape, no live pointer-type-alias found via grep in pkg/ (latent), typeassertionnil absent from cgo.yml LINTER_FLAGS (not CI-enforced). gh api search/issues confirmed zero prior coverage before filing. Filed sg84a1. 1 issue this run (chose a single high-confidence new-linter finding over padding, consistent with the many prior single-issue runs when only one finding was strong). Serena 24 tools stable, activate_project OK go/typescript/bash, no approval prompts for Read/Grep/Glob/Edit/gh api/safeoutputs/serena CLI; raw Bash grep -c/wc -c/find on repo-memory path blocked outright (reconfirms Glob/Read/Edit-only access to /tmp/gh-aw/repo-memory, consistent with all prior runs). safeoutputs create_issue via single JSON-object-argument CLI form worked in ONE shot (~3.6KB body), zero apostrophes, bold headers, fenced go block, no approval prompt, no retry. NEXT R85: verify sg84a1 landed; re-tally 17 opens (16 above + sg84a1); if registry grows (76th) audit fresh, and treat a first-pass paren_unwrap_gap probe (bare *ast.BasicLit/*ast.Ident/*ast.CallExpr/*ast.StarExpr assertions without UnwrapParenExpr) as a standing day-one check for any newly-registered linter, since it has now independently recurred in 3 consecutive new-linter audits (R82 closeerrorunchecked, R84 typeassertionnil, plus the originally-discovered instances); check whether closeerrorunchecked(74th) or typeassertionnil(75th) land in cgo.yml LINTER_FLAGS.\"}\n{\"date\": \"2026-10-03\", \"strategy\": \"DELTA-75to76-newlinter-audit(fprintferrorunchecked:node_filter_too_narrow-at-938-occurrence-scale)+reconcile-reverse-phantom-refile(63342-main-guard-4th,63343-nilctxpassed-3rd)\", \"findings\": 5, \"tasks_created\": 3, \"success_score\": 9, \"notes\": \"R85: registry DELTA 75->76 (grep -c Analyzer,$ registry.go=76). 76th=fprintferrorunchecked (PR #65073, added 2026-10-02, first-ever audit, ALREADY CI-enforced natively+wasm from day one per cgo.yml:1487/1490). AssignStmt-only nodeFilter (fprintferrorunchecked.go:40) means a bare ExprStmt call like fmt.Fprintf(w,...) with no assignment at all completely escapes detection - this is in fact the single most common way these calls are written in this codebase: grep found 938 bare fmt.Fprintf/Fprintln/Fprint statement calls across 193 files in pkg/ alone, vs the explicit `_, _ = ` form the linter actually catches. Two concrete sites cited: pkg/console/confirm.go:53-56 (writes to an io.Writer parameter, e.g. os.Stdout in real callers) and pkg/workflow/workflow_errors.go:99. This is the node_filter_too_narrow class (previously filed against globwalkignorederror/strconvparseignorederror, #61265/#63094) but at an unprecedented scale - prior instances affected a handful of sites, this affects nearly a thousand. Filed sg85a1. gh api reconcile: fresh state=open+labels=sergo query returned only 14 opens vs the 17 memory expected after R84 - diffed via a separate state=closed query sorted by updated and found 3 issues auto-expired within the prior 24h: 63342(4-linter main-guard gap, lineag
agent
TypeAssertExpr nodeFilter flagging single-value pointer-type assertions without ok-check; correctly defers x,_:=v.(T) (ok discarded via blank) to sibling typeassertionokdiscarded, confirmed via reading that linters isTwoValueBlankOkAssertion which flags any discarded-ok regardless of pointer-ness - not a gap, intentional division of labor, testdatas own goodTwoValueUnderscore comment is accurate. FOUND BUG: analyzeTypeAssert(62-75) does `typeAssert.Type.(*ast.StarExpr)` as a syntactic gate and returns early BEFORE pass.TypesInfo is ever consulted, so (a) a type alias to a pointer (type P = *T; v.(P)) is invisible despite go/types resolving P to *types.Pointer transparently, and (b) parenthesized pointer-type syntax v.((*T)) (valid per the assertion grammar Type=TypeLit|(Type)) is invisible since typeAssert.Type becomes *ast.ParenExpr - no UnwrapParenExpr call exists anywhere in the file. This is the FIRST instance of the established paren_unwrap_gap class applying to a Type position instead of a value expression. Zero testdata coverage for either shape, no live pointer-type-alias found via grep in pkg/ (latent), typeassertionnil absent from cgo.yml LINTER_FLAGS (not CI-enforced). gh api search/issues confirmed zero prior coverage before filing. Filed sg84a1. 1 issue this run (chose a single high-confidence new-linter finding over padding, consistent with the many prior single-issue runs when only one finding was strong). Serena 24 tools stable, activate_project OK go/typescript/bash, no approval prompts for Read/Grep/Glob/Edit/gh api/safeoutputs/serena CLI; raw Bash grep -c/wc -c/find on repo-memory path blocked outright (reconfirms Glob/Read/Edit-only access to /tmp/gh-aw/repo-memory, consistent with all prior runs). safeoutputs create_issue via single JSON-object-argument CLI form worked in ONE shot (~3.6KB body), zero apostrophes, bold headers, fenced go block, no approval prompt, no retry. NEXT R85: verify sg84a1 landed; re-tally 17 opens (16 above + sg84a1); if registry grows (76th) audit fresh, and treat a first-pass paren_unwrap_gap probe (bare *ast.BasicLit/*ast.Ident/*ast.CallExpr/*ast.StarExpr assertions without UnwrapParenExpr) as a standing day-one check for any newly-registered linter, since it has now independently recurred in 3 consecutive new-linter audits (R82 closeerrorunchecked, R84 typeassertionnil, plus the originally-discovered instances); check whether closeerrorunchecked(74th) or typeassertionnil(75th) land in cgo.yml LINTER_FLAGS.\"}\n{\"date\": \"2026-10-03\", \"strategy\": \"DELTA-75to76-newlinter-audit(fprintferrorunchecked:node_filter_too_narrow-at-938-occurrence-scale)+reconcile-reverse-phantom-refile(63342-main-guard-4th,63343-nilctxpassed-3rd)\", \"findings\": 5, \"tasks_created\": 3, \"success_score\": 9, \"notes\": \"R85: registry DELTA 75->76 (grep -c Analyzer,$ registry.go=76). 76th=fprintferrorunchecked (PR #65073, added 2026-10-02, first-ever audit, ALREADY CI-enforced natively+wasm from day one per cgo.yml:1487/1490). AssignStmt-only nodeFilter (fprintferrorunchecked.go:40) means a bare ExprStmt call like fmt.Fprintf(w,...) with no assignment at all completely escapes detection - this is in fact the single most common way these calls are written in this codebase: grep found 938 bare fmt.Fprintf/Fprintln/Fprint statement calls across 193 files in pkg/ alone, vs the explicit `_, _ = ` form the linter actually catches. Two concrete sites cited: pkg/console/confirm.go:53-56 (writes to an io.Writer parameter, e.g. os.Stdout in real callers) and pkg/workflow/workflow_errors.go:99. This is the node_filter_too_narrow class (previously filed against globwalkignorederror/strconvparseignorederror, #61265/#63094) but at an unprecedented scale - prior instances affected a handful of sites, this affects nearly a thousand. Filed sg85a1. gh api reconcile: fresh state=open+labels=sergo query returned only 14 opens vs the 17 memory expected after R84 - diffed via a separate state=closed query sorted by updated and found 3 issues auto-expired within the prior 24h: 63342(4-linter main-guard gap, lineag
agent
TypeAssertExpr nodeFilter flagging single-value pointer-type assertions without ok-check; correctly defers x,_:=v.(T) (ok discarded via blank) to sibling typeassertionokdiscarded, confirmed via reading that linters isTwoValueBlankOkAssertion which flags any discarded-ok regardless of pointer-ness - not a gap, intentional division of labor, testdatas own goodTwoValueUnderscore comment is accurate. FOUND BUG: analyzeTypeAssert(62-75) does `typeAssert.Type.(*ast.StarExpr)` as a syntactic gate and returns early BEFORE pass.TypesInfo is ever consulted, so (a) a type alias to a pointer (type P = *T; v.(P)) is invisible despite go/types resolving P to *types.Pointer transparently, and (b) parenthesized pointer-type syntax v.((*T)) (valid per the assertion grammar Type=TypeLit|(Type)) is invisible since typeAssert.Type becomes *ast.ParenExpr - no UnwrapParenExpr call exists anywhere in the file. This is the FIRST instance of the established paren_unwrap_gap class applying to a Type position instead of a value expression. Zero testdata coverage for either shape, no live pointer-type-alias found via grep in pkg/ (latent), typeassertionnil absent from cgo.yml LINTER_FLAGS (not CI-enforced). gh api search/issues confirmed zero prior coverage before filing. Filed sg84a1. 1 issue this run (chose a single high-confidence new-linter finding over padding, consistent with the many prior single-issue runs when only one finding was strong). Serena 24 tools stable, activate_project OK go/typescript/bash, no approval prompts for Read/Grep/Glob/Edit/gh api/safeoutputs/serena CLI; raw Bash grep -c/wc -c/find on repo-memory path blocked outright (reconfirms Glob/Read/Edit-only access to /tmp/gh-aw/repo-memory, consistent with all prior runs). safeoutputs create_issue via single JSON-object-argument CLI form worked in ONE shot (~3.6KB body), zero apostrophes, bold headers, fenced go block, no approval prompt, no retry. NEXT R85: verify sg84a1 landed; re-tally 17 opens (16 above + sg84a1); if registry grows (76th) audit fresh, and treat a first-pass paren_unwrap_gap probe (bare *ast.BasicLit/*ast.Ident/*ast.CallExpr/*ast.StarExpr assertions without UnwrapParenExpr) as a standing day-one check for any newly-registered linter, since it has now independently recurred in 3 consecutive new-linter audits (R82 closeerrorunchecked, R84 typeassertionnil, plus the originally-discovered instances); check whether closeerrorunchecked(74th) or typeassertionnil(75th) land in cgo.yml LINTER_FLAGS.\"}\n{\"date\": \"2026-10-03\", \"strategy\": \"DELTA-75to76-newlinter-audit(fprintferrorunchecked:node_filter_too_narrow-at-938-occurrence-scale)+reconcile-reverse-phantom-refile(63342-main-guard-4th,63343-nilctxpassed-3rd)\", \"findings\": 5, \"tasks_created\": 3, \"success_score\": 9, \"notes\": \"R85: registry DELTA 75->76 (grep -c Analyzer,$ registry.go=76). 76th=fprintferrorunchecked (PR #65073, added 2026-10-02, first-ever audit, ALREADY CI-enforced natively+wasm from day one per cgo.yml:1487/1490). AssignStmt-only nodeFilter (fprintferrorunchecked.go:40) means a bare ExprStmt call like fmt.Fprintf(w,...) with no assignment at all completely escapes detection - this is in fact the single most common way these calls are written in this codebase: grep found 938 bare fmt.Fprintf/Fprintln/Fprint statement calls across 193 files in pkg/ alone, vs the explicit `_, _ = ` form the linter actually catches. Two concrete sites cited: pkg/console/confirm.go:53-56 (writes to an io.Writer parameter, e.g. os.Stdout in real callers) and pkg/workflow/workflow_errors.go:99. This is the node_filter_too_narrow class (previously filed against globwalkignorederror/strconvparseignorederror, #61265/#63094) but at an unprecedented scale - prior instances affected a handful of sites, this affects nearly a thousand. Filed sg85a1. gh api reconcile: fresh state=open+labels=sergo query returned only 14 opens vs the 17 memory expected after R84 - diffed via a separate state=closed query sorted by updated and found 3 issues auto-expired within the prior 24h: 63342(4-linter main-guard gap, lineag
agent
TypeAssertExpr nodeFilter flagging single-value pointer-type assertions without ok-check; correctly defers x,_:=v.(T) (ok discarded via blank) to sibling typeassertionokdiscarded, confirmed via reading that linters isTwoValueBlankOkAssertion which flags any discarded-ok regardless of pointer-ness - not a gap, intentional division of labor, testdatas own goodTwoValueUnderscore comment is accurate. FOUND BUG: analyzeTypeAssert(62-75) does `typeAssert.Type.(*ast.StarExpr)` as a syntactic gate and returns early BEFORE pass.TypesInfo is ever consulted, so (a) a type alias to a pointer (type P = *T; v.(P)) is invisible despite go/types resolving P to *types.Pointer transparently, and (b) parenthesized pointer-type syntax v.((*T)) (valid per the assertion grammar Type=TypeLit|(Type)) is invisible since typeAssert.Type becomes *ast.ParenExpr - no UnwrapParenExpr call exists anywhere in the file. This is the FIRST instance of the established paren_unwrap_gap class applying to a Type position instead of a value expression. Zero testdata coverage for either shape, no live pointer-type-alias found via grep in pkg/ (latent), typeassertionnil absent from cgo.yml LINTER_FLAGS (not CI-enforced). gh api search/issues confirmed zero prior coverage before filing. Filed sg84a1. 1 issue this run (chose a single high-confidence new-linter finding over padding, consistent with the many prior single-issue runs when only one finding was strong). Serena 24 tools stable, activate_project OK go/typescript/bash, no approval prompts for Read/Grep/Glob/Edit/gh api/safeoutputs/serena CLI; raw Bash grep -c/wc -c/find on repo-memory path blocked outright (reconfirms Glob/Read/Edit-only access to /tmp/gh-aw/repo-memory, consistent with all prior runs). safeoutputs create_issue via single JSON-object-argument CLI form worked in ONE shot (~3.6KB body), zero apostrophes, bold headers, fenced go block, no approval prompt, no retry. NEXT R85: verify sg84a1 landed; re-tally 17 opens (16 above + sg84a1); if registry grows (76th) audit fresh, and treat a first-pass paren_unwrap_gap probe (bare *ast.BasicLit/*ast.Ident/*ast.CallExpr/*ast.StarExpr assertions without UnwrapParenExpr) as a standing day-one check for any newly-registered linter, since it has now independently recurred in 3 consecutive new-linter audits (R82 closeerrorunchecked, R84 typeassertionnil, plus the originally-discovered instances); check whether closeerrorunchecked(74th) or typeassertionnil(75th) land in cgo.yml LINTER_FLAGS.\"}\n{\"date\": \"2026-10-03\", \"strategy\": \"DELTA-75to76-newlinter-audit(fprintferrorunchecked:node_filter_too_narrow-at-938-occurrence-scale)+reconcile-reverse-phantom-refile(63342-main-guard-4th,63343-nilctxpassed-3rd)\", \"findings\": 5, \"tasks_created\": 3, \"success_score\": 9, \"notes\": \"R85: registry DELTA 75->76 (grep -c Analyzer,$ registry.go=76). 76th=fprintferrorunchecked (PR #65073, added 2026-10-02, first-ever audit, ALREADY CI-enforced natively+wasm from day one per cgo.yml:1487/1490). AssignStmt-only nodeFilter (fprintferrorunchecked.go:40) means a bare ExprStmt call like fmt.Fprintf(w,...) with no assignment at all completely escapes detection - this is in fact the single most common way these calls are written in this codebase: grep found 938 bare fmt.Fprintf/Fprintln/Fprint statement calls across 193 files in pkg/ alone, vs the explicit `_, _ = ` form the linter actually catches. Two concrete sites cited: pkg/console/confirm.go:53-56 (writes to an io.Writer parameter, e.g. os.Stdout in real callers) and pkg/workflow/workflow_errors.go:99. This is the node_filter_too_narrow class (previously filed against globwalkignorederror/strconvparseignorederror, #61265/#63094) but at an unprecedented scale - prior instances affected a handful of sites, this affects nearly a thousand. Filed sg85a1. gh api reconcile: fresh state=open+labels=sergo query returned only 14 opens vs the 17 memory expected after R84 - diffed via a separate state=closed query sorted by updated and found 3 issues auto-expired within the prior 24h: 63342(4-linter main-guard gap, lineag
agent
analyzeFuncBody ast.Inspect visits every BlockStmt/CaseClause/CommClause independently (line 52-63) and analyzeBlockStatements(line 72) only searches hasScannerErrCheck(stmts[i+1:]) within THAT SAME stmts slice (line 98) - a scanner.Err() check placed in an ENCLOSING block after an if/for/switch wrapping the scan loop lives in a different stmts slice and is invisible; matches the block_scope_state_reset class already catalogued from bufferresetbeforereuse one linter later. testdata badNestedBlock/goodNestedBlock only cover Err() check INSIDE the same if-block as the loop, never the enclosing-block case. Grepped every scanner.Scan()/scanner.Err() prod site in pkg/ (excl _test.go, ~20 sites across pkg/cli+pkg/parser+pkg/workflow) - ALL place loop+errcheck as direct top-level-function siblings, so 0 live FPs today (latent, same latency profile as sg61a1). receiverKey (line 227-250) recurses through arbitrarily-deep SelectorExpr chains keeping the ROOT idents types.Object fixed while accumulating path - CORRECTLY avoids the nested_selector_key_collapse class (sg62a1/#41376) that manualmutexunlock still has; audited-clean on that vein, better design than its predecessor. doc.go already documents 70th linter (no doc-sync gap); not yet in cgo.yml LINTER_FLAGS (not CI-enforced, pure diagnostic no SuggestedFix). Filed sg66a1=#aw_sg66a1 (block-scope Err()-check gap). Serena 24 tools STABLE. NEXT R67: verify sg66a1 landed; re-check the 5+1=6 opens (60367,60170,59875,59627,59122,+sg66a1); if registry grows again (71st) audit fresh; low-priority idea: probe bufioscannererunchecked isBufioScanner for wrapper-struct-embedding-bufio.Scanner blind spot (likely intentional scope limit, not filed).\"}\n{\"date\": \"2026-09-15\", \"strategy\": \"DELTA-70to71-newlinter-audit(blankassigncomma)+reconcile-reverse-phantom-refile(59122-closed-not_planned-bug-still-present)\", \"findings\": 5, \"tasks_created\": 2, \"success_score\": 9, \"notes\": \"R67: registry DELTA 70->71. 71st=blankassigncomma (PR #60893, 2026-09-14, no SuggestedFix, first-ever audit). gh api reconcile: #60557(sg65a1) confirmed CLOSED-COMPLETED (already fixed by R66). #59122 (nolint space-prefix, was open at R66) flipped to closed/not_planned (auto-expired) this run - re-read pkg/linters/internal/nolint/nolint.go:59-60 (strings.TrimPrefix(comment.Text,\\\"//\\\") then HasPrefix(text,\\\"nolint:\\\")) and confirmed the bug is STILL 100% present: a `// nolint:x` (single space) comment leaves a leading space after TrimPrefix and fails HasPrefix, silently dropping the directive from the index. This is the SECOND reverse-phantom-reconcile instance (closed but unfixed) after #58376/#60557 - re-filed as sg67a1. Full audit of blankassigncomma.go (stateless single-nodeFilter AssignStmt check, all-Lhs-blank with len>=2, properly wired to filecheck.ShouldSkipFilename + nolint.HasDirectiveForLinter, no scope-boundary/double-traversal/selector-collapse bug classes apply since it holds no state and does no ancestor walk): grepped every `_, _ = ` site in pkg/ (excl testdata/_test.go) and found 14 production matches, ALL deliberate idiomatic discards - pkg/console/spinner.go:208, pkg/workflow/maintenance_cron.go:46, pkg/workflow/compiler_yaml_main_job.go:37 (the PRs own cited motivating example), pkg/workflow/strings.go:174-175 (one line below an explicit comment: hash.Hash.Write never returns an error in practice, but check to satisfy gosec G104 - direct proof the pattern exists ONLY to satisfy a different linter), pkg/cli/outcome_eval_review.go:311, graders_run.go:365, update_extension_check.go:161, deps_outdated.go:181, deps_security.go:164, trial_repository.go:183 (explicit Ignore error comment), codemod_steps_run_secrets_env.go:450, docker_images.go:354, bootstrap_profile_github_app.go:284. Cross-referenced .golangci.yml:37 which disables errcheck repo-wide (exclude-functions broken in v2) - meaning `_, _ =` is this codebases MANUAL SUBSTITUTE for a broken exclude-list mechanism, and blankassigncomma (no allow-list of its own) directly re-flags the same pattern. NEW PATTERN CLASS added
detection
Process completed with exit code 1.
detection
ERR_SYSTEM: ❌ Detection result file not found at: /tmp/gh-aw/threat-detection/detection_result.json
detection
Process completed with exit code 2.
agent
Removed symbolic link before artifact upload: /tmp/gh-aw/latest
conclusion
Failed to post comment to detection runs issue: Commenting is disabled on issues with more than 2500 comments - https://docs.github.com/rest/issues/comments#create-an-issue-comment
conclusion
Threat detection produced no security verdict. Review the detection job logs before trusting the agent outputs.
agent
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
detection
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Artifacts

Produced during runtime
Name Size Digest
agent
1.37 MB
sha256:a9eecb6fb8a7b12888168346740c11fdece88dc357b2e1454ed0f1b37c6d18c8
agent-output-fallback
12.9 KB
sha256:c52e45e9ff39ee0bc274da762f18175bf66bc9e3fcae5e149fbb432a236366ce
detection
18 KB
sha256:faac2edbae2a009f5ff99f560dc5fda3f47014e5668ef3fe2fcdb07c21984112
info
616 Bytes
sha256:44e26799f1d0cd60d897d4ea20f4a5f7c8b38550adc118315c5ce3760bf913f0
safe-outputs-items
631 Bytes
sha256:ca2b0965bfd6ac3af515667784f1a624e8dde6d820c517152dc70f7d0e44a27c
usage
127 KB
sha256:4046c15b984ea1a365e639aab416f092d3ed4b4dc2812a05557b24421d2da95a