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,0x43,0x6a,0x9e,0xf9,0x07,0x73,0xd8,0xe8,0x24,0x93,0xcc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0xcb,0x6c,0x41,0x52,0x61,0x20,0x4e,0x77,0x39}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6a,0xf0,0x96,0x3c,0x4c,0x78,0x33,0xd0,0xf0,0x00}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6b,0x59,0x5f,0xe7,0xdd,0x57,0xba,0xc1,0x12,0x51}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6c,0x62,0x5b,0x0d,0x91,0x66,0xd0,0xca,0x10,0x2d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6c,0x62,0xc5,0x19,0x94,0x5b,0xcd,0x20,0xd9,0x73}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6d,0xb8,0x7f,0xac,0x82,0x55,0x27,0xf2,0x01,0xf5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6d,0x95,0x8d,0xd8,0x7b,0x41,0xdc,0x81,0xd4,0x3d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x6e,0x38,0xa5,0x11,0x8c,0x64,0x2b,0xc5,0xbe,0x6c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x76,0xbb,0x65,0x0a,0xdf,0x23,0xa2,0x6d,0x4d,0xc8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x76,0x8d,0x46,0x54,0x2a,0xb7,0x9e,0xce,0x74,0x45}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x77,0x30,0x99,0x1c,0x76,0x58,0x64,0x7c,0x2e,0x16}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x71,0x6f,0xc8,0x1a,0xde,0x5b,0xde,0xda,0xcc,0xd5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x72,0x89,0x34,0x3d,0x7c,0x33,0x47,0x01,0x02,0x92}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x74,0x3b,0x0e,0x42,0x30,0x42,0x63,0xa5,0x3e,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x74,0x2d,0xb6,0x15,0xc8,0x70,0x60,0x25,0x2e,0xe7}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x74,0x65,0x8d,0x57,0xdb,0x20,0xa2,0xc1,0xa7,0xbd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x74,0xf9,0x3c,0xb3,0x2d,0xc2,0x18,0xc5,0xcb,0x2a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x75,0x95,0xe1,0x69,0x25,0x99,0xec,0xac,0x00,0xe4}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x76,0x3f,0x29,0x6c,0xec,0xd3,0x95,0x7e,0x4e,0x8d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7e,0x9e,0x2f,0x58,0x20,0x23,0xea,0x34,0x78,0x44}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7e,0xaf,0xae,0x18,0x67,0x04,0x98,0x61,0x2f,0xa9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7f,0x84,0xea,0x51,0x31,0xd3,0x46,0x75,0xae,0xbb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x78,0x3e,0x3b,0x74,0x2b,0x6f,0x57,0x06,0x53,0xbb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x78,0x24,0xc1,0x1e,0x6e,0x73,0x93,0xa5,0x08,0xe3}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x78,0xc0,0xf5,0x28,0xea,0xf3,0xc2,0x2c,0x6a,0x69}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x79,0x0f,0xd0,0x25,0xd4,0xa5,0xbc,0xcb,0x72,0x51}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7a,0xa9,0x41,0x75,0xf6,0x5f,0x6f,0x83,0x58,0xf1}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7c,0x39,0x64,0xaf,0xf5,0x37,0xe7,0x22,0xe0,0x42}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x7c,0xc3,0x68,0x1e,0x92,0x7c,0xbb,0x04,0x12,0x0b}, 8333},