Latest tested version?

[yjsoh]

In the Dockerfile, you use rust:latest. I believe something is incompatible with the latest version. What was the latest version that successfully execute the test codes?

[FaizChishtie]

Ah, apologies - should pin this; will push up a fix shortly!

[VeVarunSharma]

Ah, apologies - should pin this; will push up a fix shortly!

Where's the fix