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,0x43,0x09,0x3a,0x13,0x09,0xee,0xe3,0x9d,0x4b,0xf6,0x18}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x09,0x96,0x0e,0x33,0xd9,0x24,0xeb,0x3a,0xfd,0x72}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x09,0xf7,0xa3,0x66,0xdb,0x6e,0x04,0xac,0xc2,0x93}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x09,0xdd,0xc5,0x38,0x6f,0x21,0xdb,0xfb,0xc7,0x77}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0a,0x26,0x27,0x21,0xbc,0x8a,0xca,0x0e,0x5a,0x17}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0a,0x2d,0xf9,0x79,0x25,0xf4,0x74,0xc2,0xec,0x54}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0a,0xbf,0x87,0xf8,0x8f,0x6b,0x04,0xb5,0xc3,0xfa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0a,0xc4,0xa9,0xc4,0xd5,0x27,0x6a,0x49,0xa6,0x4a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0a,0xec,0x17,0xfc,0xc5,0x19,0x4a,0x39,0x5f,0x86}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0b,0x6e,0xdf,0x42,0x02,0xef,0x4d,0x56,0xf5,0xcf}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0b,0xfe,0xed,0x69,0x75,0x12,0x41,0x62,0x2e,0xb5}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0c,0x21,0x88,0x50,0x46,0x4f,0x26,0x23,0xb7,0xdc}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x0d,0x47,0x96,0x52,0x62,0x81,0x7e,0x6c,0xe5,0xbd}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x16,0xfd,0x96,0x10,0xc9,0x52,0x1a,0x59,0xb2,0x65}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x17,0x0a,0xdf,0x68,0xcd,0x5c,0xd6,0x68,0xbe,0x75}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x10,0x00,0x45,0xf7,0x04,0x1d,0x50,0xe7,0x43,0x2a}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x10,0x21,0xde,0x00,0x2b,0x28,0x62,0xda,0x30,0x63}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x11,0x22,0xd8,0xb2,0x2a,0xee,0x5c,0xcc,0xbb,0x2d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x11,0xe2,0x8f,0x22,0x66,0x48,0x00,0x67,0x17,0x93}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x13,0x45,0x64,0x2b,0x73,0x68,0xf4,0x44,0xb3,0xb9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x15,0x30,0x98,0x3b,0x28,0x23,0x04,0xcb,0x02,0xeb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x15,0xff,0x00,0x68,0xcf,0x86,0x1f,0xf7,0xac,0x7d}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x16,0x5f,0xfb,0x18,0x14,0x97,0x0d,0x54,0x3b,0xfa}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1e,0x8a,0xde,0xf2,0x25,0xc2,0x46,0x06,0x99,0x1c}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1e,0xa4,0xae,0x76,0x9e,0x10,0x3d,0xcc,0x12,0x07}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1e,0xc0,0xeb,0x31,0xa6,0xaa,0xa7,0x2c,0xa0,0x04}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1f,0x51,0x4e,0x01,0x19,0xde,0x34,0xa3,0x08,0xc9}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x1f,0xb2,0x1b,0x6a,0x57,0x6d,0xcc,0x9e,0xca,0xbb}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x18,0x7b,0x11,0xf4,0x9c,0xf4,0xfe,0xc3,0x21,0xa8}, 8333},
    {{0xfd,0x87,0xd8,0x7e,0xeb,0x43,0x18,0x91,0xa3,0x51,0x6e,0x8a,0xf9,0xcc,0x27,0xbd}, 8333},