I did not find anything posted searching for this Internet-structure-research-project-bot UA but just saw a visit coming from a CLOUD Serverius (RIPE) range:
92.63.110.0/23
92.63.110.0 - 92.63.111.255
Entire UA: "Internet-structure-research-project-bot"
requested only the root but since it is on a domain that I'm closing there's nothing much there. No images were included so it is only 2k file with inline css, nothing else to request except a clear .png file. I am afraid it added nothing to their "research".
Did not request robots.txt which does exist.