diff --git a/cli/outputflags/flags.go b/cli/outputflags/flags.go
index 8fc7912104..cadff39e31 100644
--- a/cli/outputflags/flags.go
+++ b/cli/outputflags/flags.go
@@ -26,7 +26,6 @@ type Flags struct {
 	forceBinary   bool
 	jsonPretty    bool
 	jsonShortcut  bool
-	noHeader      bool
 	outputFile    string
 	pretty        int
 	split         string
diff --git a/compiler/rungen/op.go b/compiler/rungen/op.go
index a7a1d5cb4e..f3f02cbe9b 100644
--- a/compiler/rungen/op.go
+++ b/compiler/rungen/op.go
@@ -408,17 +408,6 @@ func (b *Builder) compileAssignmentsToLvals(assignments []dag.Assignment) ([]*ex
 	return srcs, dsts, nil
 }
 
-func splitAssignments(assignments []expr.Assignment) ([]*expr.Lval, []expr.Evaluator) {
-	n := len(assignments)
-	lhs := make([]*expr.Lval, 0, n)
-	rhs := make([]expr.Evaluator, 0, n)
-	for _, a := range assignments {
-		lhs = append(lhs, a.LHS)
-		rhs = append(rhs, a.RHS)
-	}
-	return lhs, rhs
-}
-
 func (b *Builder) compileSeq(seq dag.Seq, parents []sbuf.Puller) ([]sbuf.Puller, error) {
 	for _, o := range seq {
 		var err error
diff --git a/compiler/rungen/vop.go b/compiler/rungen/vop.go
index 816b8a5c55..4149878833 100644
--- a/compiler/rungen/vop.go
+++ b/compiler/rungen/vop.go
@@ -99,15 +99,6 @@ func (b *Builder) combineVam(pullers []vector.Puller) vector.Puller {
 	return vamop.NewCombine(b.rctx, pullers)
 }
 
-func (b *Builder) compileVamScan(scan *dag.SeqScan, parent sbuf.Puller) (vector.Puller, error) {
-	pool, err := b.lookupPool(scan.Pool)
-	if err != nil {
-		return nil, err
-	}
-	//XXX check VectorCache not nil
-	return vamop.NewScanner(b.rctx, b.env.DB().VectorCache(), parent, pool, scan.Fields, nil, nil), nil
-}
-
 func (b *Builder) compileVamFork(fork *dag.ForkOp, parent vector.Puller) ([]vector.Puller, error) {
 	var f *vamop.Fork
 	if parent != nil {
diff --git a/compiler/semantic/checker.go b/compiler/semantic/checker.go
index ff9b59a84a..b7763c4628 100644
--- a/compiler/semantic/checker.go
+++ b/compiler/semantic/checker.go
@@ -28,13 +28,6 @@ func newChecker(t *translator) *checker {
 	}
 }
 
-func (c *checker) check(r reporter, seq sem.Seq) {
-	c.pushErrs()
-	c.seq(c.unknown, seq)
-	errs := c.popErrs()
-	errs.flushErrs(r)
-}
-
 func (c *checker) seq(typ super.Type, seq sem.Seq) super.Type {
 	for len(seq) > 0 {
 		if fork, ok := seq[0].(*sem.ForkOp); ok && len(seq) >= 2 {
diff --git a/compiler/semantic/evaluator.go b/compiler/semantic/evaluator.go
index ef8c048ab5..3a8f03cb24 100644
--- a/compiler/semantic/evaluator.go
+++ b/compiler/semantic/evaluator.go
@@ -2,7 +2,6 @@ package semantic
 
 import (
 	"errors"
-	"strings"
 
 	"github.com/brimdata/super"
 	"github.com/brimdata/super/compiler/ast"
@@ -276,17 +275,6 @@ func (e *evaluator) expr(expr sem.Expr) bool {
 	}
 }
 
-func quotedPath(path []string) string {
-	if len(path) == 0 {
-		return "this"
-	}
-	var elems []string
-	for _, s := range path {
-		elems = append(elems, sup.QuotedName(s))
-	}
-	return strings.Join(elems, ".")
-}
-
 func (e *evaluator) arrayElems(elems []sem.ArrayElem) bool {
 	isConst := true
 	for _, elem := range elems {
diff --git a/runtime/sam/expr/agg/fuser.go b/runtime/sam/expr/agg/fuser.go
index 3f5d93c525..9a5406086d 100644
--- a/runtime/sam/expr/agg/fuser.go
+++ b/runtime/sam/expr/agg/fuser.go
@@ -12,8 +12,6 @@ type Fuser struct {
 
 	typ   super.Type
 	types map[super.Type]struct{}
-
-	missingFieldsNullable bool
 }
 
 // XXX this is used by type checker but I think we can use the other one
diff --git a/runtime/sam/expr/cast.go b/runtime/sam/expr/cast.go
index 9b54b9985f..46d7f6338d 100644
--- a/runtime/sam/expr/cast.go
+++ b/runtime/sam/expr/cast.go
@@ -244,24 +244,6 @@ func (c *casterBytes) Eval(val super.Value) super.Value {
 	return super.NewBytes(val.Bytes())
 }
 
-type casterNamedType struct {
-	sctx *super.Context
-	expr Evaluator
-	name string
-}
-
-func (c *casterNamedType) Eval(this super.Value) super.Value {
-	val := c.expr.Eval(this)
-	if val.IsError() {
-		return val
-	}
-	typ, err := c.sctx.LookupTypeNamed(c.name, super.TypeUnder(val.Type()))
-	if err != nil {
-		return c.sctx.NewError(err)
-	}
-	return super.NewValue(typ, val.Bytes())
-}
-
 type casterType struct {
 	sctx *super.Context
 }
diff --git a/runtime/vam/expr/cast/number.go b/runtime/vam/expr/cast/number.go
index 1b0cfd3e79..e3efd4b44a 100644
--- a/runtime/vam/expr/cast/number.go
+++ b/runtime/vam/expr/cast/number.go
@@ -39,18 +39,6 @@ func castToNumber(vec vector.Any, typ super.Type, index []uint32) (vector.Any, [
 	}
 }
 
-func inverseIndex(index []uint32, n uint32) []uint32 {
-	var inverse []uint32
-	for i := range n {
-		if len(index) > 0 && index[0] == i {
-			index = index[1:]
-			continue
-		}
-		inverse = append(inverse, i)
-	}
-	return inverse
-}
-
 func toNumeric[T numeric](vec vector.Any, typ super.Type, index []uint32) ([]T, []uint32) {
 	switch vec := vec.(type) {
 	case *vector.Uint:
diff --git a/runtime/vam/expr/mapcall.go b/runtime/vam/expr/mapcall.go
index d9d8902e56..63ae846de7 100644
--- a/runtime/vam/expr/mapcall.go
+++ b/runtime/vam/expr/mapcall.go
@@ -2,15 +2,13 @@ package expr
 
 import (
 	"github.com/brimdata/super"
-	"github.com/brimdata/super/scode"
 	"github.com/brimdata/super/vector"
 )
 
 type mapCall struct {
-	sctx    *super.Context
-	builder scode.Builder
-	expr    Evaluator
-	lambda  Evaluator
+	sctx   *super.Context
+	expr   Evaluator
+	lambda Evaluator
 }
 
 func NewMapCall(sctx *super.Context, e, lambda Evaluator) Evaluator {
diff --git a/sio/dbio/writer.go b/sio/dbio/writer.go
index b6c3cca513..4d41c9cc8f 100644
--- a/sio/dbio/writer.go
+++ b/sio/dbio/writer.go
@@ -29,7 +29,6 @@ type Writer struct {
 	sup      *sup.Formatter
 	commits  table
 	branches map[ksuid.KSUID][]string
-	rulename string
 	width    int
 	colors   color.Stack
 	headID   ksuid.KSUID
@@ -216,26 +215,3 @@ func (t table) formatCommit(b *bytes.Buffer, commit *commits.Commit, branches []
 		b.WriteString(s)
 	}
 }
-
-func (t table) formatActions(b *bytes.Buffer, id ksuid.KSUID) {
-	for _, action := range t[id] {
-		switch action := action.(type) {
-		case *commits.Add:
-			formatAdd(b, 4, action)
-		case *commits.Delete:
-			formatDelete(b, 4, action)
-		}
-	}
-	b.WriteString("\n")
-}
-
-func formatDelete(b *bytes.Buffer, indent int, delete *commits.Delete) {
-	tab(b, indent)
-	b.WriteString("Delete ")
-	b.WriteString(delete.ID.String())
-	b.WriteByte('\n')
-}
-
-func formatAdd(b *bytes.Buffer, indent int, add *commits.Add) {
-	formatDataObject(b, &add.Object, "Add", indent)
-}
diff --git a/sio/parquetio/vectorreader.go b/sio/parquetio/vectorreader.go
index bf442a06be..4af0798220 100644
--- a/sio/parquetio/vectorreader.go
+++ b/sio/parquetio/vectorreader.go
@@ -24,9 +24,8 @@ import (
 )
 
 type VectorReader struct {
-	ctx      context.Context
-	sctx     *super.Context
-	pushdown sbuf.Pushdown
+	ctx  context.Context
+	sctx *super.Context
 
 	fr                 *pqarrow.FileReader
 	colIndexes         []int
diff --git a/sup/lexer.go b/sup/lexer.go
index 7fcba64e04..fbcbf38d68 100644
--- a/sup/lexer.go
+++ b/sup/lexer.go
@@ -131,13 +131,6 @@ func (l *Lexer) matchTight(b byte) (bool, error) {
 	return false, nil
 }
 
-func (l *Lexer) matchBytes(b []byte) (bool, error) {
-	if err := l.skipSpace(); err != nil {
-		return false, err
-	}
-	return l.matchBytesTight(b)
-}
-
 func (l *Lexer) matchBytesTight(b []byte) (bool, error) {
 	n := len(b)
 	if err := l.check(n); err != nil {
@@ -150,23 +143,6 @@ func (l *Lexer) matchBytesTight(b []byte) (bool, error) {
 	return ok, nil
 }
 
-func (l *Lexer) scanTo(b byte) ([]byte, error) {
-	var out []byte
-	for {
-		next, err := l.readByte()
-		if err != nil {
-			return nil, err
-		}
-		if next == b {
-			return out, nil
-		}
-		out = append(out, next)
-		if len(out) > MaxSize {
-			return nil, ErrBufferOverflow
-		}
-	}
-}
-
 func (l *Lexer) readByte() (byte, error) {
 	if err := l.check(1); err != nil {
 		return 0, err
diff --git a/sup/marshal.go b/sup/marshal.go
index e83b642021..ebb01c89f1 100644
--- a/sup/marshal.go
+++ b/sup/marshal.go
@@ -853,25 +853,6 @@ func indirect(v reflect.Value, val super.Value) (BSUPUnmarshaler, reflect.Value)
 	return nil, v
 }
 
-func (u *UnmarshalBSUPContext) decodeNull(val super.Value, v reflect.Value) error {
-	inner := v
-	for inner.Kind() == reflect.Pointer {
-		if inner.IsNil() {
-			// Set nil elements so we can find the actual type of the underlying
-			// value. This is not so we can set the type since the outer value
-			// will eventually get set to nil- but rather so we can type check
-			// the null (i.e., you cannot marshal a int64 to null(ip), etc.).
-			v.Set(reflect.New(v.Type().Elem()))
-		}
-		inner = inner.Elem()
-	}
-	if err := u.decodeAny(val, inner); err != nil {
-		return err
-	}
-	v.Set(reflect.Zero(v.Type()))
-	return nil
-}
-
 func (u *UnmarshalBSUPContext) decodeNetipAddr(val super.Value, v reflect.Value) error {
 	if super.TypeUnder(val.Type()) != super.TypeIP {
 		return incompatTypeError(val.Type(), v)
diff --git a/vector/record.go b/vector/record.go
index 6ccbbc0cb5..b8c4f9d880 100644
--- a/vector/record.go
+++ b/vector/record.go
@@ -197,7 +197,6 @@ func buildTags(nones []uint32, n uint32) ([]uint32, uint32) {
 // the first, which may be zero when the first value is non-none.
 type RLE struct {
 	runs       []uint32
-	running    bool
 	prediction uint32
 	last       uint32
 }