ESP8266 crashes with 3 APIs

[AndreKR]

Here's a simple sketch that does nothing:

#include <ESP8266WiFi.h>

#define THINGSBOARD_ENABLE_DYNAMIC 1
#include <Arduino_MQTT_Client.h>
#include <OTA_Firmware_Update.h>
#include <Server_Side_RPC.h>
#include <Shared_Attribute_Update.h>
#include <ThingsBoard.h>

WiFiClient espClient;
Arduino_MQTT_Client mqttClient(espClient);
OTA_Firmware_Update<> ota;
Server_Side_RPC<> rpc;
Shared_Attribute_Update<> shared_update;
const std::array<IAPI_Implementation*, 3U> apis = { &rpc, &ota, &shared_update };
ThingsBoard tb(mqttClient, 128U, 128U, Default_Max_Stack_Size, Default_Max_Response_Size, apis.cbegin(), apis.cend());

void setup() {
  Serial.begin(115200);
}

void loop() {
  Serial.print(".");
  delay(1000);
}

When I compile this and flash it to a D1 mini (with an ESP8266MOD on it), it causes a boot loop:

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 3424, room 16 
tail 0
chksum 0x2e
load 0x3fff20b8, len 40, room 8 
tail 0
chksum 0x2b
csum 0x2b
v00062080
~ld


Hardware WDT Stack Dump - enabled

If I remove one of the APIs and adjust the array length, then it stops crashing.

Not sure what's going on here. Out of memory? I have enabled all the log levels including OOM but it won't show any more info than that.