GDB crash when debugging cargo

Installed cargo-1.47.0-r1, rust-dbg-1.47.0-r1, and gdb-10.1-r0.
```
tbodt-pro:~# gdb --args cargo new foo
GNU gdb (GDB) 10.1
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Reading symbols from cargo...
Reading symbols from /usr/lib/debug//usr/bin/cargo.debug...
(gdb) r
Starting program: /usr/bin/cargo new foo
warning: unable to open /proc file '/proc/27/task/27/maps'
Aborted
```
dmesg shows `5 page fault on 0x58585808 at 0xf7f891f9`.