[INFO] fetching crate llvm-sys 40.3.1...
[INFO] extracting crate llvm-sys 40.3.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/llvm-sys/40.3.1
[INFO] extracting crate llvm-sys 40.3.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/llvm-sys/40.3.1
[INFO] validating manifest of llvm-sys-40.3.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of llvm-sys-40.3.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing llvm-sys-40.3.1
[INFO] finished frobbing llvm-sys-40.3.1
[INFO] frobbed toml for llvm-sys-40.3.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/llvm-sys/40.3.1/Cargo.toml
[INFO] started frobbing llvm-sys-40.3.1
[INFO] finished frobbing llvm-sys-40.3.1
[INFO] frobbed toml for llvm-sys-40.3.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/llvm-sys/40.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing llvm-sys-40.3.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/llvm-sys/40.3.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d4b6083311bcf5420c84b437659ca08f8e1b4eb56a7e27ca6cf9401f02452b4f
[INFO] running `"docker" "start" "-a" "d4b6083311bcf5420c84b437659ca08f8e1b4eb56a7e27ca6cf9401f02452b4f"`
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling llvm-sys v40.3.1 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v40.3.1 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/llvm-sys-84b94d4d09f835b8/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 3.8.1 on PATH, but need 4.0.1.
[INFO] [stderr] Didn't find usable system-wide LLVM.
[INFO] [stderr] LLVM_SYS_40_PREFIX not set, not using precompiled binaries
[INFO] [stderr] LLVM_SYS_40_AUTOBUILD not set, will not automatically compile LLVM
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Could not find a compatible version of LLVM', build.rs:77:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x558b7c8d18db - backtrace::backtrace::libunwind::trace::h5dfa5d4c5feed6dc
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x558b7c8d18db - backtrace::backtrace::trace_unsynchronized::hb731fe64f3fa469f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x558b7c8d18db - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x558b7c8d18db - std::sys_common::backtrace::print::h31646c3786c57441
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x558b7c8d18db - std::panicking::default_hook::{{closure}}::hda785e768c746ae7
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x558b7c8d15b7 - std::panicking::default_hook::h0c4b76f338614ef1
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x558b7c8d2050 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x558b7c878988 - std::panicking::begin_panic::hcd2a54803b1b958f
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x558b7c698f87 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::hd4c840488f6093ac
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:77
[INFO] [stderr]    9:     0x558b7c698f87 - core::ops::function::FnOnce::call_once::ha42dcc1900c9f593
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libcore/ops/function.rs:231
[INFO] [stderr]   10:     0x558b7c695e53 - lazy_static::lazy::Lazy<T>::get::{{closure}}::h9af0c5b16035bff2
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:24
[INFO] [stderr]   11:     0x558b7c69c00b - std::sync::once::Once::call_once::{{closure}}::h3b64e8c03a393c49
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/sync/once.rs:225
[INFO] [stderr]   12:     0x558b7c8cea74 - std::sync::once::Once::call_inner::h2daeac7a28e6dd90
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   13:     0x558b7c69bf93 - std::sync::once::Once::call_once::hab0fb5cc7dd24bce
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/sync/once.rs:225
[INFO] [stderr]   14:     0x558b7c69360f - lazy_static::lazy::Lazy<T>::get::h024344892af86274
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:23
[INFO] [stderr]   15:     0x558b7c69360f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h63ef20f145f0fb7e
[INFO] [stderr]                                at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:13
[INFO] [stderr]   16:     0x558b7c69360f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::ha54a9cb866f4ad7c
[INFO] [stderr]                                at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:14
[INFO] [stderr]   17:     0x558b7c69121a - build_script_build::llvm_config::h479b2bc4c269621d
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:164
[INFO] [stderr]   18:     0x558b7c6925b0 - build_script_build::get_llvm_cflags::hb47414348841d957
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:266
[INFO] [stderr]   19:     0x558b7c6929ae - build_script_build::main::hd3fcaf6c9a34811a
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:291
[INFO] [stderr]   20:     0x558b7c695f90 - std::rt::lang_start::{{closure}}::hd081a657766d39e3
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x558b7c8d1a53 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   22:     0x558b7c8d1a53 - std::panicking::try::do_call::h480cafa68c9928b4
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   23:     0x558b7c8da03a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   24:     0x558b7c8d255d - std::panicking::try::he0549d0299de204a
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   25:     0x558b7c8d255d - std::panic::catch_unwind::h422dc2db98f03517
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   26:     0x558b7c8d255d - std::rt::lang_start_internal::h121de03325a3f900
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   27:     0x558b7c695f69 - std::rt::lang_start::he353582b2afc3f1f
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   28:     0x558b7c69365a - main
[INFO] [stderr]   29:     0x7f60adfb82e1 - __libc_start_main
[INFO] [stderr]   30:     0x558b7c68ffaa - _start
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "d4b6083311bcf5420c84b437659ca08f8e1b4eb56a7e27ca6cf9401f02452b4f"`
[INFO] running `"docker" "rm" "-f" "d4b6083311bcf5420c84b437659ca08f8e1b4eb56a7e27ca6cf9401f02452b4f"`
[INFO] [stdout] d4b6083311bcf5420c84b437659ca08f8e1b4eb56a7e27ca6cf9401f02452b4f