Slightly improve error messages

[matklad]

• print "build failed" error to stderr (have not executed that line, but it should work :) )
• don't print "warning: warning:". Now the error looks like this:

warning: could not determine a browser to open docs with, tried:
        xdg-open
        gnome-open
        kde-open

[rust-highfive]

r? @alexcrichton

(rust_highfive has picked a reviewer for you, use r? to override)

[matklad]

Not sure why CI fails on Mac/beta. Looks like an unrelated race condition

[alexcrichton]

@bors: r+ 207d088e5b2a6ceb38d2237dc33b0a700be16f95

[bors]

⌛ Testing commit 207d088 with merge 667a8ab...

[bors]

💔 Test failed - cargo-win-msvc-64

[alexcrichton]

@bors: r+

[bors]

📌 Commit 49b6d04 has been approved by alexcrichton

[bors]

⌛ Testing commit 49b6d04 with merge 52e9fbb...

[bors]

💔 Test failed - cargo-linux-64

[alexcrichton]

@bors: retry

On Mon, May 16, 2016 at 11:13 AM, bors [email protected] wrote:

[image: 💔] Test failed - cargo-linux-64
http://buildbot.rust-lang.org/builders/cargo-linux-64/builds/1610

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#2665 (comment)

[bors]

⚡ Previous build results for cargo-cross-linux, cargo-win-gnu-32, cargo-win-gnu-64 are reusable. Rebuilding only cargo-linux-32, cargo-linux-64, cargo-mac-32, cargo-mac-64, cargo-win-msvc-32, cargo-win-msvc-64...

[bors]

💔 Test failed - cargo-win-msvc-64

[alexcrichton]

@bors: retry

[bors]

⌛ Testing commit 49b6d04 with merge ed20d7b...

[bors]

💔 Test failed - cargo-win-msvc-64

[alexcrichton]

The other CI builds succeeded but this seems like a legitimate error happening 3 times in a row...

[matklad]

It is indeed genuie: cross_compile tests always fail locally, so I don't run them. I've tried to fix the test in question.

How should I run cross test locally? At the moment, I just cargo test with CFG_DISABLE_CROSS_TESTS=1.

[alexcrichton]

You'll just need to install the cross-std, so if you're on rustup you can just do something like rustup target add i686-unknown-linux-gnu

[bors]

☔ The latest upstream changes (presumably #2722) made this pull request unmergeable. Please resolve the merge conflicts.