SGX target: clean up dist builder, update libunwind

[jethrogb]

This incorporates fortanix/llvm-project#4

Fixes fortanix/rust-sgx#65

r? @alexcrichton

[jethrogb]

Without -f, this only fails on network errors, not on e.g. 404 Not Found.

[alexcrichton]

@bors: r+

[bors]

📌 Commit 9ce3cfa has been approved by alexcrichton

[bors]

⌛ Testing commit 9ce3cfa with merge 75c2e7b976931bc78839362745a94dc55a367b90...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

Your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

[00:02:24]  ---> 51da13068bbc
[00:02:24] Step 5/35 : RUN apt-key adv --batch --yes --keyserver keyserver.ubuntu.com --recv-keys 74DA7924C5513486
[00:02:24]  ---> Running in fb39503ebd30
[00:02:25] Warning: apt-key output should not be parsed (stdout is not a terminal)
[00:02:25] Executing: /tmp/apt-key-gpghome.VIFxyrk2HM/gpg.1.sh --batch --yes --keyserver keyserver.ubuntu.com --recv-keys 74DA7924C5513486
[00:02:27] gpg: Total number processed: 1
[00:02:27] gpg:               imported: 1
[00:02:28] Removing intermediate container fb39503ebd30
[00:02:28]  ---> 2bfdd7d1926b
---
travis_time:end:0f7d3640:start=1548768709540306357,finish=1548768709547386648,duration=7080291
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:1b26a900
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:03a538af
travis_time:start:03a538af
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:0018e37c
$ dmesg | grep -i kill

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[jethrogb]

[00:36:36] Step 17/35 : RUN /tmp/build-x86_64-fortanix-unknown-sgx-toolchain.sh "75628849f538a62712353ac6e4c9e789da90923e"
[00:36:36]  ---> Running in 6087eb91a77b
[00:36:36] + hide_output install_prereq
[00:36:40] + hide_output build_unwind
[00:37:11] The command '/bin/sh -c /tmp/build-x86_64-fortanix-unknown-sgx-toolchain.sh "75628849f538a62712353ac6e4c9e789da90923e"' returned a non-zero code: 2

@VardhanThigle can you please look into this and also make it so Travis prints useful logs if the build fails?

[jethrogb]

Should be fixed now

[alexcrichton]

@bors: r+

[bors]

📌 Commit b025557 has been approved by alexcrichton

[bors]

⌛ Testing commit b025557 with merge 63505b8...

[bors]

☀️ Test successful - checks-travis, status-appveyor
Approved by: alexcrichton
Pushing 63505b8 to master...