Rollup of 4 pull requests

[frewsxcv]

• Successful merges: -Z linker-flavor #40018, Reduce str transmutes, add mut versions of methods. #41096, Fix jemalloc support for musl #41168, COPYRIGHT: remove hoedown license #41183
• Failed merges:

[frewsxcv]

@bors r+ p=10

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

[bors]

📌 Commit 73e26a5 has been approved by frewsxcv

[bors]

⌛ Testing commit 73e26a5 with merge 62a33c9...

[bors]

💔 Test failed - status-travis

[alexcrichton]

@bors: retry * openssl error #40417

…

On Mon, Apr 10, 2017 at 12:10 PM, bors ***@***.***> wrote: 💔 Test failed - status-travis <https://travis-ci.org/rust-lang/rust/builds/220609338> — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#41188 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAD95DNcKm-mre_XP0pd1OxjUhCJ_Bfaks5rumJ0gaJpZM4M47k3> .

[bors]

⌛ Testing commit 73e26a5 with merge 38230af...

[bors]

💔 Test failed - status-appveyor

[TimNN]

@bors retry

• Spurious failures on AppVeyor due to ar.exe errors #40546

[bors]

⌛ Testing commit 73e26a5 with merge 1984027...

[bors]

💔 Test failed - status-travis

[TimNN]

[00:00:00] +++dirname src/ci/init_repo.sh
[00:00:00] ++cd src/ci
[00:00:00] ++pwd
[00:00:00] +ci_dir=/Users/travis/build/rust-lang/rust/src/ci
[00:00:00] +. /Users/travis/build/rust-lang/rust/src/ci/shared.sh
[00:00:00] +REPO_DIR=.
[00:00:00] +CACHE_DIR=/Users/travis/rustsrc
[00:00:00] +cache_src_dir=/Users/travis/rustsrc/src
[00:00:00] +cache_valid_file=/Users/travis/rustsrc/cache_valid1
[00:00:00] +'[' '!' -d . -o '!' -d ./.git ']'
[00:00:00] +cd .
[00:00:00] +'[' '!' -d /Users/travis/rustsrc ']'
[00:00:00] +'[' '!' -f /Users/travis/rustsrc/cache_valid1 ']'
[00:00:00] +set +o errexit
[00:00:00] ++cd /Users/travis/rustsrc/src
[00:00:00] ++git status --porcelain
[00:00:00] ++wc -l
[00:00:01] fatal: Not a git repository: src/compiler-rt/../../.git/modules/src/compiler-rt
[00:00:01] +stat_lines='       0'
[00:00:01] ++cd /Users/travis/rustsrc/src
[00:00:01] ++git status
[00:00:02] ++echo 128
[00:00:02] +stat_ec=128
[00:00:02] +set -o errexit
[00:00:02] +'[' '!' -d /Users/travis/rustsrc/src/.git -o 0 '!=' 0 -o 128 '!=' 0 ']'
[00:00:02] +echo 'WARNING: /Users/travis/rustsrc/cache_valid1 exists but bad repo: l:       0, ec:128'
[00:00:02] +rm -rf /Users/travis/rustsrc
[00:00:02] WARNING: /Users/travis/rustsrc/cache_valid1 exists but bad repo: l:       0, ec:128
[00:00:15] rm: /Users/travis/rustsrc/src: Directory not empty
[00:00:15] rm: /Users/travis/rustsrc: Directory not empty

cc @aidanhs

[aidanhs]

adding /Users/travis/rustsrc to cache
creating directory /Users/travis/rustsrc
running `casher add/Users/travis/docker /Users/travis/rustsrc` took longer than 180 seconds and has been aborted

ok, restoring the cache was aborted. This is fine, the paranoia script will just nuke it, as it then attempted. But rm -rf printing things like "directory not empty" sounds like either a bad disk or a network drive. Looking at the partitions:

$ echo "#### Build failed; Disk usage after running script:"; df -h; du . | sort -nr | head -n100
    
#### Build failed; Disk usage after running script:
Filesystem      Size   Used  Avail Capacity  iused    ifree %iused  Mounted on
/dev/disk0s2   149Gi   71Gi   78Gi    48% 18580816 20530880   48%   /
devfs          176Ki  176Ki    0Bi   100%      608        0  100%   /dev
map -hosts       0Bi    0Bi    0Bi   100%        0        0  100%   /net
map auto_home    0Bi    0Bi    0Bi   100%        0        0  100%   /home
[...]

auto_home sounds suspiciously like a network drive, especially after searching online.

I would submit a PR to remove caching logic from everywhere, but that wouldn't have helped in this case - the git submodule deinit -f . && git submodule update --init loop that existed previously would also have blown up. I've created #41201 to track this issue, I don't have any better immediate suggestion than a retry.