Rollup of 7 pull requests#68956

Closed

Dylan-DPC-zz wants to merge 24 commits into

rust-lang:masterfrom

Dylan-DPC-zz:rollup-jxj1qk9

Commits on Feb 4, 2020

Commits on Feb 5, 2020

Reorder declarations of Result::export/unwrap to match Option
brson
committed
Reorder declarations of Result::expect_err/unwrap_err to match Option
brson
committed

Commits on Feb 6, 2020

rustc_codegen_llvm: always set AlwaysPreserve on all debuginfo variables.
eddyb
committed

Commits on Feb 8, 2020