One of my nodes using `onlynet=tor` nodes is completely broken with current master as of 97a35f3ae5bff7f4a25d37d8961191fdbc8c5b67.

Tor is manually configured. Relevant `bitcoin.conf`:
```
onlynet=onion
proxy=127.0.0.1:9050
onion=127.0.0.1:9050
```

It does not manage to make any outgoing connections. The log has an endless stream of:
```
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
…
```
(multiple messages per second, all `[…]` are short v2 onion addresses)

```
$ systemctl status tor
● tor.service - Anonymizing overlay network for TCP
     Loaded: loaded (/etc/systemd/system/tor.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2021-03-03 14:45:24 CET; 3min 0s ago
    Process: 158931 ExecStartPre=/opt/tor/bin/tor -f /opt/tor/etc/tor/torrc --verify-config (code=exited, status=0/SUCCESS)
   Main PID: 158962 (tor)
      Tasks: 1 (limit: 9367)
     Memory: 38.4M
     CGroup: /system.slice/tor.service
             └─158962 /opt/tor/bin/tor -f /opt/tor/etc/tor/torrc

Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
```

I'll try to see if I can figure out what it's sending. Tor (current master) is otherwise successfully able to connect to hidden services, at least v3 ones.

Did Tor completely remove v2 support?

```
$ /opt/tor/bin/tor --version
Tor version 0.4.6.0-alpha-dev (git-8020ae02abb105db).
Tor is running on Linux with Libevent 2.1.11-stable, OpenSSL 1.1.1f, Zlib 1.2.11, Liblzma 5.2.4, Libzstd N/A and Glibc 2.31 as libc.
Tor compiled with GCC version 9.3.0
```
{{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x35,0x9d,0x76,0xb9,0x43,0x15,0x85,0xf3,0xe3,0x8f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3e,0xf7,0xb2,0xf2,0x0d,0xb1,0x3e,0xc8,0xe1,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3f,0x81,0xbd,0x37,0x81,0x58,0x6d,0x6c,0x37,0x83}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0x0b,0x69,0xc4,0x2e,0x74,0xb2,0xe2,0x30,0x2c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0x6c,0x73,0x48,0x3b,0x21,0x10,0xd6,0xc7,0xd3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0xab,0xe2,0xba,0xe7,0xeb,0x15,0xf2,0x9c,0x3d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0xfc,0x75,0x4c,0x4b,0xf5,0x80,0xcc,0xaf,0x2c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0xc1,0xe6,0x48,0x1c,0xaf,0x23,0x3f,0xfc,0xd7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x38,0xcc,0xdb,0xaa,0x90,0x90,0xfd,0x64,0xda,0xd7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x39,0x8f,0xb0,0x65,0xbb,0x21,0x24,0x31,0xd4,0x46}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x39,0xf1,0x7a,0x78,0x36,0x52,0x48,0x52,0x25,0xd9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3a,0x32,0xdf,0x45,0x8e,0x2c,0x8d,0xba,0x3d,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3a,0x61,0x7b,0xcb,0x1a,0x74,0x88,0xc2,0xd4,0x95}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3a,0x82,0xff,0xb0,0x26,0xb7,0x94,0xb5,0xcb,0x92}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3a,0xdc,0x9a,0x59,0x16,0x0a,0x9c,0x9e,0x28,0x79}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3a,0xf3,0x79,0x26,0x3f,0x70,0x77,0x0c,0xe6,0x10}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3b,0x51,0x4c,0xbd,0x64,0xc9,0x03,0x83,0xd7,0xe0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3b,0x9a,0x32,0x59,0x49,0xe4,0xb9,0x11,0x8a,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3c,0x17,0xd6,0xd7,0xd5,0x38,0x88,0x81,0xec,0x2d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3c,0x9e,0x97,0x7d,0x90,0x8c,0x49,0xd3,0x62,0xf1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3d,0x3d,0xc9,0x69,0x83,0x8e,0xef,0xfc,0x5d,0x40}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3d,0x6d,0x58,0x6a,0x56,0x54,0x2d,0xb8,0x57,0x0e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3d,0x9d,0xa0,0xa3,0x0d,0x1c,0x63,0x57,0xaf,0xc5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x3e,0x6e,0x9d,0x8e,0x67,0xde,0x35,0x79,0xf3,0xae}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x46,0xe8,0x5b,0xd2,0xdb,0x9f,0xc5,0x72,0x8d,0xf0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x40,0x36,0xdd,0xc3,0xb4,0xe7,0x4d,0x57,0xdf,0xe0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x40,0x8a,0x69,0x6c,0xa2,0x98,0x94,0x3e,0x60,0x8e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x40,0x9f,0x9f,0x4c,0xf0,0xa8,0xd2,0x2b,0x2e,0xa1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x41,0x77,0xac,0xbb,0xb4,0xe3,0x0e,0x3a,0x34,0xa3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x41,0xb8,0xb3,0x52,0x0b,0xf5,0x6e,0xa0,0xb1,0x91}, 8333},