Thanks for the response.
On further inspection, I had updated a dependency around the same time as updating to 1.14.0. The newer version does not build on the smaller specced VM with previous versions of rustc either.
--(0700 AM:101:$)-- cargo b --verbose
Compiling winapi v0.2.8 (file:///home/awsaba/winapi-rs)
Running `rustc src/lib.rs --crate-name winapi --crate-type lib -C metadata=0d44ad282bd35975 --out-dir /home/awsaba/ampere-build/target/debug/deps --emit=dep-info,link -L dependency=/home/awsaba/winapi-rs/target/debug/deps`
fatal runtime error: out of memory
error: Could not compile `winapi`.
This is on Ubuntu 16.04 x64. The crate is winapi-rs 0.2.x branch, with this line removed to build: https://github.com/retep998/winapi-rs/blob/0.2/src/lib.rs#L7
At the time, this was easier than obtaining about a half-dozen structs by other means.
I was having the same issue with another crate, postgres 0.13.4, but I can’t seem to reproduce that one as reliably today.