Auto merge of rust-lang#3239 - GuillaumeGomez:update, r=JohnTitor

Update crate version to 0.2.144

Please make a new release so I can use the new constants I added for macOS. :)

r? `@Amanieu`

Auto merge of rust-lang#3236 - JohnTitor:release-0.2.143, r=JohnTitor

Release 0.2.143

Fixes rust-lang#3234

Auto merge of rust-lang#3208 - ComputerDruid:bump_142, r=JohnTitor

Bump to 0.2.142

A new release would unblock rust-lang/rust#110562

Auto merge of rust-lang#3180 - jsha:print-rustc-error-output, r=JohnT…

…itor

build.rs: print rustc stderr if exit status != 0

I was trying to run benchmarks locally with rustc-perf and found that many of them failed to build with a message from libc's build.rs "Failed to get rustc version." I made this change locally to help debug, and I think it would be generally useful. In my case it quickly revealed that rustc was failing to find libLLVM and so `rustc --version` was emitting nothing on stdout.

I think this may have been part of what was intended with rust-lang#3000 and might help debug rust-lang/crater#663.

Auto merge of rust-lang#3141 - Amanieu:v0.2.140, r=JohnTitor

Bump version to 0.2.140

Auto merge of rust-lang#3042 - flba-eb:release_0.2.139, r=JohnTitor

Prepare 0.2.139 release

It would be great to have a new release of libc pushed to crates.io 😄

Auto merge of rust-lang#2994 - SteveLauC:libc-02138, r=JohnTitor

bump to 0.2.138

Bump version to 0.2.138 🚀

Auto merge of rust-lang#2982 - JohnTitor:release-0.2.137, r=JohnTitor

Prepare 0.2.137 release

Signed-off-by: Yuki Okushi <[email protected]>

Auto merge of rust-lang#2975 - JohnTitor:release-0.2.136, r=JohnTitor

Prepare 0.2.136 release

Signed-off-by: Yuki Okushi <[email protected]>

Auto merge of rust-lang#2951 - MrCroxx:xx/bump-to-135, r=JohnTitor

Bump to 0.2.135

I'm going to make a new release as requested by nix-rust/nix#1743 (comment) .