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,0x43,0x59,0x89,0x67,0xa7,0x3f,0x41,0x3e,0x30,0x42,0x11}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x59,0x95,0x50,0xd6,0x2e,0xf7,0xd2,0xe6,0x3a,0x56}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5a,0x2d,0xdc,0xf1,0xa6,0x40,0xbc,0x1f,0xd5,0xb5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5a,0x65,0xf3,0x5a,0x2c,0x66,0x41,0xe8,0x78,0xc0}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5b,0x2a,0x0b,0xec,0x9e,0x05,0x81,0x7a,0x9e,0x08}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5c,0x73,0xff,0x8e,0xc5,0xfe,0x21,0xc1,0x19,0xb3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5d,0x41,0xde,0x3d,0xa1,0x86,0x9b,0x26,0x27,0x11}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5d,0xc5,0xaa,0x3c,0xf7,0xc6,0x2e,0x55,0x9d,0xa5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5e,0x13,0x80,0x8e,0x3c,0x3b,0x13,0xb0,0xc0,0x01}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x5e,0x75,0x95,0xb5,0x98,0xc3,0x6d,0x33,0x58,0xba}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x67,0x8e,0x26,0xbd,0x0a,0x43,0x30,0x7d,0xff,0x0f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x60,0xfd,0xbe,0xb9,0x89,0x6c,0x4c,0x72,0x10,0x7b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x60,0xc3,0xb7,0x51,0xf6,0x2f,0x0b,0xa8,0x61,0x21}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x61,0x3c,0x3e,0x12,0x57,0xfb,0x8e,0x36,0xdd,0xa4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x61,0x04,0x55,0x21,0x5d,0x12,0x39,0xfb,0x09,0x49}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x61,0x63,0x52,0x55,0xbf,0xb7,0xa3,0x69,0x3f,0x91}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x62,0x19,0x4a,0x4d,0x64,0xb7,0x65,0x19,0x8e,0x8a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x63,0x71,0x25,0x6d,0x19,0xbd,0x62,0x0d,0x9e,0x95}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x64,0x29,0xe3,0x42,0x71,0x3b,0x3d,0x7c,0xda,0xc7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x65,0xa8,0x2f,0x55,0xcc,0xe3,0x4c,0x84,0xcc,0x3b}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x65,0xc7,0x38,0xa4,0xe4,0xd6,0x0b,0x2b,0xed,0xe6}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6f,0x10,0x12,0x4f,0x8f,0x44,0x85,0x5d,0x69,0xa9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6f,0x87,0xcf,0x54,0x39,0xbf,0x36,0x12,0x55,0x61}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6f,0xa7,0xe5,0x14,0xd9,0x5d,0x5d,0x9b,0x9c,0xac}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6f,0xe3,0x17,0x08,0xf6,0x24,0x4b,0xa8,0x5f,0x24}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x68,0xa4,0x34,0x41,0x8d,0xb9,0xda,0xd4,0x86,0x59}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0x27,0x7b,0x6d,0x0b,0x29,0x5a,0x67,0xd1,0x95}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0x57,0x2a,0xd0,0x28,0x58,0xc8,0x75,0xd2,0xd1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0x64,0xb2,0xc9,0x15,0xc6,0x0e,0x8b,0x86,0x4f}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0x8b,0xd2,0x78,0x3f,0x7a,0xf8,0x92,0x8f,0x80}, 8333},