The cargo binary reports wrong version in edge
$ apk add cargo rust
Installing rust (1.31.1-r1)
Installing cargo (1.31.1-r1)
$ cargo -V
cargo 1.31.0 # should print 1.31.1
$ rustc -V
rustc 1.31.1
$ cargo build
Segmentation fault
(from redmine: issue id 9825, created on 2019-01-02, closed on 2019-06-19)