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,0x43,0xbe,0xda,0x60,0xee,0xa0,0xf8,0xdd,0x5a,0x11,0xb6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbf,0x7f,0x7f,0x68,0x2c,0x63,0x70,0xba,0xbb,0xf1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xb9,0xaa,0xce,0xfd,0x87,0x35,0x7b,0xee,0x0d,0x40}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xb9,0xe5,0xb3,0x2c,0xb6,0x6d,0x91,0x46,0x22,0xad}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xba,0x49,0xd2,0xda,0xb8,0x28,0xe8,0x4d,0x53,0xca}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xba,0xcd,0x40,0x9b,0x0b,0xc6,0x82,0xba,0xc8,0xdd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbb,0x57,0x4d,0xce,0xa0,0x53,0x4d,0x8f,0xcd,0x4f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbb,0xba,0xc0,0x45,0x0b,0x3d,0x30,0xef,0x86,0x93}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbc,0x80,0x0b,0xa0,0xe3,0xc1,0x9b,0x6b,0xc5,0x17}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbd,0x3a,0xc5,0xd0,0xc3,0x93,0x32,0x55,0x57,0x27}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbd,0x63,0x78,0x09,0xf3,0x85,0x50,0x42,0x0c,0x3a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xbd,0xb2,0x78,0xc7,0x06,0x2c,0xe1,0xb8,0x72,0xdc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc7,0x25,0x66,0x48,0x17,0x18,0x9d,0x2d,0x05,0xb4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc7,0x66,0xbe,0x2e,0x08,0xdf,0xba,0xf7,0xae,0x83}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc7,0x6d,0x92,0x43,0x00,0x24,0xe5,0xd6,0x83,0xd3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc7,0xf7,0x05,0x69,0x99,0x52,0x54,0x77,0x2b,0x1f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc7,0xdd,0x9d,0xe0,0x6d,0xaa,0x03,0xcb,0x9c,0x21}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc0,0x0f,0xf8,0x18,0xb0,0x84,0x66,0x47,0x08,0xe4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc0,0x41,0xc0,0xc5,0x9d,0xef,0x46,0x46,0xae,0x7f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc1,0x89,0x05,0x1b,0x88,0x6b,0xd7,0x20,0x08,0x9b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc2,0x4e,0xd2,0xd3,0xfd,0x58,0x32,0x14,0x6f,0x87}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc2,0x6d,0xf5,0x40,0x0f,0xbd,0xfb,0x53,0x19,0xc9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc3,0x3e,0x86,0xb1,0xd5,0x0c,0x5a,0x0e,0x18,0x4e}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0x3a,0x2a,0x49,0xb4,0x72,0xa4,0x2c,0x7b,0x99}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0x44,0x04,0x3a,0x11,0x84,0x47,0x67,0x2a,0x13}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0x45,0x1f,0xbc,0xc9,0xa0,0x32,0x01,0xeb,0xbc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0x55,0x2a,0xb9,0xbb,0x9b,0x2a,0xe7,0x1c,0x75}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0xdf,0x49,0x72,0xb7,0xed,0xbe,0x9f,0x59,0xfa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc4,0xe0,0x24,0x19,0x5a,0x39,0xc6,0xbe,0x74,0xee}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0xc5,0xdc,0x95,0xee,0xec,0x4d,0x25,0xb1,0xa1,0x5a}, 8333},