fixed compile error

42 jobs from master in 27 minutes and 10 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #28651
build

04:18

canceled #28628
build

00:04

 
  Test
passed #28652
test:cargo:api

04:17

passed #28654
test:cargo:compiler

05:05

passed #28653
test:cargo:ir

04:17

passed #28655
test:cargo:runtime

04:17

passed #28661
allowed to fail
testjit:binops

00:06

passed #28662
allowed to fail
testjit:cmpops

00:05

passed #28663
allowed to fail
testjit:controlflow

00:03

passed #28664
allowed to fail
testjit:convops

00:03

passed #28665
allowed to fail
testjit:double

00:07

passed #28666
allowed to fail
testjit:memops

00:04

passed #28660
allowed to fail
testjit:milestones

00:04

passed #28667
allowed to fail
testjit:otherops

00:03

canceled #28668
allowed to fail
testjit:rpython

01:49

canceled #28669
allowed to fail
testjit:som

failed #28659
allowed to fail
testmuc:test_binop

00:33

failed #28658
allowed to fail
testmuc:test_cmp

00:34

failed #28656
allowed to fail
testmuc:test_simple

00:37

failed #28657
allowed to fail
testmuc:test_swapstack

00:39

canceled #28629
test:cargo:api

canceled #28631
test:cargo:compiler

canceled #28630
test:cargo:ir

canceled #28632
test:cargo:runtime

canceled #28638
allowed to fail
testjit:binops

canceled #28639
allowed to fail
testjit:cmpops

canceled #28640
allowed to fail
testjit:controlflow

canceled #28641
allowed to fail
testjit:convops

canceled #28642
allowed to fail
testjit:double

canceled #28643
allowed to fail
testjit:memops

canceled #28637
allowed to fail
testjit:milestones

canceled #28644
allowed to fail
testjit:otherops

canceled #28645
allowed to fail
testjit:rpython

canceled #28646
allowed to fail
testjit:som

canceled #28636
allowed to fail
testmuc:test_binop

canceled #28635
allowed to fail
testmuc:test_cmp

canceled #28633
allowed to fail
testmuc:test_simple

canceled #28634
allowed to fail
testmuc:test_swapstack

 
  Mubench
canceled #28670
mubench

canceled #28647
mubench

 
  Rustfmt
canceled #28671
rustfmt

canceled #28648
rustfmt