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,0x43,0x8b,0xc2,0xdb,0xf7,0x90,0x6a,0x11,0x58,0xb0,0xfb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8c,0xab,0x57,0x1a,0x03,0x5a,0x12,0xff,0xfc,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x8d,0x99,0xd1,0xf0,0xe6,0xd9,0xc5,0xff,0xa8,0x73}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x96,0xf0,0x45,0xaa,0xa2,0xe9,0x7b,0x72,0x62,0x56}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x97,0xa3,0x7e,0xe8,0xe8,0x9b,0x1e,0xfe,0x2c,0xc4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x90,0x3c,0xcd,0xc6,0xb8,0x12,0x1e,0x62,0x31,0x58}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x90,0x2a,0x40,0x90,0x92,0x62,0x91,0x56,0x14,0x2e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x90,0x70,0x98,0xf5,0xaf,0x56,0x98,0xb6,0x16,0xdf}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x91,0x23,0x64,0xf3,0x49,0x61,0x3b,0x73,0x9d,0x96}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x91,0xb9,0x56,0x50,0x35,0xd8,0xd3,0x1c,0xd6,0x87}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x91,0xe4,0x65,0x49,0x74,0xcf,0x92,0xa3,0x3f,0xc6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x92,0x71,0x96,0x5a,0xd4,0xf0,0xd0,0x84,0x4f,0x71}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x92,0xb6,0x46,0xee,0x24,0xa0,0xcd,0xb9,0x0c,0xdd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x92,0x9c,0x82,0xbf,0x8e,0x4f,0xd7,0xc7,0x4a,0x9d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x92,0xc9,0xa1,0x01,0xeb,0x52,0xdb,0xbd,0x93,0xf8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x93,0x06,0x3f,0xc3,0xe6,0x73,0x40,0x91,0xb1,0x30}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x93,0xd8,0x7a,0x5d,0x21,0xd0,0x87,0xf5,0x92,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x94,0x54,0x6c,0x57,0xa4,0x1b,0x74,0xf0,0x7d,0x0b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x94,0x96,0xd4,0xa4,0xed,0x65,0x96,0xbc,0x4a,0xbc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x95,0x3d,0xec,0x1a,0x20,0x97,0xa2,0xa1,0xcd,0xab}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x95,0x1a,0x3a,0xb0,0x29,0x8c,0xcc,0x32,0x80,0xf7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x95,0x47,0xee,0xab,0xa9,0x78,0x17,0xa7,0xed,0x73}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x95,0x68,0x0e,0x9d,0x10,0x5d,0x2d,0xf7,0x6a,0x56}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x95,0xe0,0x9a,0x05,0x94,0x67,0x22,0xc2,0x99,0xf4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9e,0xb9,0xda,0xa3,0xfc,0xd4,0xd1,0xb9,0xb5,0x40}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9f,0x0a,0x17,0x56,0xa6,0xcb,0xda,0x86,0x0f,0x4f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9f,0x17,0xcb,0x57,0x64,0x8a,0x8e,0xf1,0x93,0x4f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9f,0x60,0x23,0xd8,0x31,0xf5,0x3b,0x5d,0x00,0xca}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x9f,0xd2,0xb0,0x27,0xc6,0x36,0x2f,0xf9,0x76,0xb8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x98,0x3d,0x24,0x92,0x18,0x0e,0xbe,0x5e,0x37,0x80}, 8333},