lint: don't skip builtin

.golangci.yml

@@ -16,6 +16,12 @@ linters:
     - deadcode
     - scopelint
 
+# We don't want to skip builtin/
+skip-dirs-use-default: false
+skip-dirs:
+  - vendor$
+  - testdata$
+  - examples$
 
 issues:
   exclude:

chain/actors/builtin/builtin.go

@@ -52,7 +52,7 @@ type PoStProof = proof0.PoStProof
 type FilterEstimate = smoothing0.FilterEstimate
 
 func FromV0FilterEstimate(v0 smoothing0.FilterEstimate) FilterEstimate {
-	return (FilterEstimate)(v0)
+	return (FilterEstimate)(v0) //nolint:unconvert
 }
 
 // Doesn't change between actors v0, v2, and v3.

chain/actors/builtin/multisig/state0.go

@@ -68,7 +68,7 @@ func (s *state0) ForEachPendingTxn(cb func(id int64, txn Transaction) error) err
 		if n <= 0 {
 			return xerrors.Errorf("invalid pending transaction key: %v", key)
 		}
-		return cb(txid, (Transaction)(out))
+		return cb(txid, (Transaction)(out)) //nolint:unconvert
 	})
 }
 

chain/actors/builtin/multisig/state2.go

@@ -67,7 +67,7 @@ func (s *state2) ForEachPendingTxn(cb func(id int64, txn Transaction) error) err
 		if n <= 0 {
 			return xerrors.Errorf("invalid pending transaction key: %v", key)
 		}
-		return cb(txid, (Transaction)(out))
+		return cb(txid, (Transaction)(out)) //nolint:unconvert
 	})
 }
 

chain/actors/builtin/multisig/state3.go

@@ -69,7 +69,7 @@ func (s *state3) ForEachPendingTxn(cb func(id int64, txn Transaction) error) err
 		if n <= 0 {
 			return xerrors.Errorf("invalid pending transaction key: %v", key)
 		}
-		return cb(txid, (Transaction)(out))
+		return cb(txid, (Transaction)(out)) //nolint:unconvert
 	})
 }