Rust beta crash when running cargo clippy with index out of bound error on travis ci osx

[iamsauravsharma]

Rust beta currently crash out when cargo clippy in run on travis CI. https://travis-ci.com/iamsauravsharma/cargo-trim/jobs/239695854#L121
If I am correct this issue was fixed by #64774 over nightly but it didn't land over beta rust branch so beta rust is still failing on travis CI OSX.
rust version
rustc 1.39.0-beta.1 (968967007 2019-09-24)
cargo version
cargo 1.39.0-beta (b6c6f685b 2019-09-19)

[matthiaskrgr]

Looks like rust-lang/cargo#7427
Should be fixed once #64773 is merged and a new beta is released.

[jonas-schievink]

Yeah, duplicate of rust-lang/cargo#7427