node-exporter can't start

[lemonqqqq]

$uname -a
Linux 4.9.168-019.ali3000.alios7.x86_64 #1 SMP Thu Dec 31 20:20:01 CST 2020 x86_64 x86_64 x86_64 GNU/Linux

node_exporter --version
v1.8.0/v1.7.0

error

[SuperQ]

Interesting, I wonder if one of the recent changes to error message handling broke the not exist check for this.

CC @rexagod