syzkaller: make target failed: failed to run ["make" "target"]: exit status 2

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:
git tree: https://github.com/google/syzkaller.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=156bc352100000
dashboard link: https://syzkaller.appspot.com/bug?extid=bf5135ee3588f7bab899
compiler: go version go1.10.8 linux/amd64

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+bf5135...@syzkaller.appspotmail.com



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[Dmitry Vyukov]

I have update netbsd toolchain:

#syz invalid

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