llvm-sys 40.2.1

# rustc version
rustc 1.33.0-nightly (adbfec229 2018-12-17)# docs.rs version
cratesfyi 0.6.0 (2f681cd 2018-12-20)# build log
Updating crates.io index
Downloading crates ...
Downloaded llvm-sys v40.2.1
Fresh version_check v0.1.5
Fresh cfg-if v0.1.6
Fresh ucd-util v0.1.3
Fresh lazy_static v1.2.0
Fresh semver-parser v0.7.0
Fresh utf8-ranges v1.0.2
Fresh gcc v0.3.55
Fresh lazy_static v0.2.11
Fresh regex-syntax v0.5.6
Fresh thread_local v0.3.6
Fresh semver v0.6.0
Fresh libc v0.2.45
Fresh memchr v2.1.2
Fresh aho-corasick v0.6.9
Fresh regex v0.2.11
Compiling llvm-sys v40.2.1
Running `rustc --crate-name build_script_build /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/llvm-sys-40.2.1/build.rs --color never --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=be6b4f85e694b54f -C extra-filename=-be6b4f85e694b54f --out-dir /home/cratesfyi/cratesfyi/debug/build/llvm-sys-be6b4f85e694b54f -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern gcc=/home/cratesfyi/cratesfyi/debug/deps/libgcc-449ac0588f8aebc9.rlib --extern lazy_static=/home/cratesfyi/cratesfyi/debug/deps/liblazy_static-aa0c0ee2d625b1ef.rlib --extern regex=/home/cratesfyi/cratesfyi/debug/deps/libregex-260574c521d3e4bf.rlib --extern semver=/home/cratesfyi/cratesfyi/debug/deps/libsemver-a9a2fa923975d5b3.rlib --cap-lints allow`
Running `/home/cratesfyi/cratesfyi/debug/build/llvm-sys-be6b4f85e694b54f/build-script-build`
thread 'main' panicked at 'ErrorMessage {
msg: "failed to run custom build command for `llvm-sys v40.2.1`\nprocess didn\'t exit successfully: `/home/cratesfyi/cratesfyi/debug/build/llvm-sys-be6b4f85e694b54f/build-script-build` (exit code: 101)\n--- stdout\nDidn\'t find usable system-wide LLVM.\nLLVM_SYS_40_PREFIX not set, not using precompiled binaries\nLLVM_SYS_40_AUTOBUILD not set, will not automatically compile LLVM\n\n--- stderr\nthread \'main\' panicked at \'Could not find a compatible version of LLVM\', /home/cratesfyi/.cargo/registry/src/github.com-1ecc6299db9ec823/llvm-sys-40.2.1/build.rs:77:9\nnote: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.\n"
}', src/bin/cratesfyi.rs:142:13
note: Run with `RUST_BACKTRACE=1` for a backtrace.