Q.Eucalyptus Tree Problem
I bought a eucalyptus tree last summer and put it in a large pot. The tree seemed fine all over the winter and did not seem bothered by the snow. Since the weather has gotten warmer, the tree appears to be dying. The leaves have all dried out and is looking very sorry for itself. It does seem to have grown taller since we had it, however.

Certified GKH Gardening Expert
It may be overwatered. Cut back on watering and check the roots for root rot. This article will help:
https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm