[INFO] fetching crate jcompiler 0.1.0...
[INFO] extracting crate jcompiler 0.1.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/jcompiler/0.1.0
[INFO] extracting crate jcompiler 0.1.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/jcompiler/0.1.0
[INFO] validating manifest of jcompiler-0.1.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jcompiler-0.1.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jcompiler-0.1.0
[INFO] finished frobbing jcompiler-0.1.0
[INFO] frobbed toml for jcompiler-0.1.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/jcompiler/0.1.0/Cargo.toml
[INFO] started frobbing jcompiler-0.1.0
[INFO] finished frobbing jcompiler-0.1.0
[INFO] frobbed toml for jcompiler-0.1.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/jcompiler/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking jcompiler-0.1.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/jcompiler/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aaf0bfa0e1491b6b2d50571ad44446bb9ddc1e2ae7f46458e02cb9187b82e29a
[INFO] running `"docker" "start" "-a" "aaf0bfa0e1491b6b2d50571ad44446bb9ddc1e2ae7f46458e02cb9187b82e29a"`
[INFO] [stderr]    Compiling llvm-sys v70.2.1
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v70.2.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/llvm-sys-2757e973496209b3/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 3.8.0 on PATH, but need 7.0.1.
[INFO] [stderr] Didn't find usable system-wide LLVM.
[INFO] [stderr] No suitable version of LLVM was found system-wide or pointed
[INFO] [stderr]                   to by LLVM_SYS_70_PREFIX.
[INFO] [stderr]                   
[INFO] [stderr]                   Consider using `llvmenv` to compile an appropriate copy of LLVM, and
[INFO] [stderr]                   refer to the llvm-sys documentation for more information.
[INFO] [stderr]                   
[INFO] [stderr]                   llvm-sys: https://crates.io/crates/llvm-sys
[INFO] [stderr]                   llvmenv: https://crates.io/crates/llvmenv
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Could not find a compatible version of LLVM', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:73:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55855bae9acb - backtrace::backtrace::libunwind::trace::h8758853b907b30fd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55855bae9acb - backtrace::backtrace::trace_unsynchronized::h979d07d4bfdce29c
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55855bae9acb - std::sys_common::backtrace::_print::ha749bbdb811617ea
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55855bae9acb - std::sys_common::backtrace::print::h86a6ff63a904e869
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55855bae9acb - std::panicking::default_hook::{{closure}}::h68500b20afb715b9
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55855bae97a7 - std::panicking::default_hook::ha801ade4ae33c264
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55855baea240 - std::panicking::rust_panic_with_hook::hfb51b615c6060100
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55855ba51fb8 - std::panicking::begin_panic::h8f4f022e667fad70
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x55855b835ea1 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::h052c082a1ee790a5
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:73
[INFO] [stderr]    9:     0x55855b835ea1 - core::ops::function::FnOnce::call_once::h39aca9e0f7d4597f
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libcore/ops/function.rs:231
[INFO] [stderr]   10:     0x55855b843792 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hb319f6ef795238a1
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:28
[INFO] [stderr]   11:     0x55855b83953b - std::sync::once::Once::call_once::{{closure}}::h404b046ff109eaa5
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/sync/once.rs:225
[INFO] [stderr]   12:     0x55855bae6e34 - std::sync::once::Once::call_inner::h0059186f7ca0d0f0
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   13:     0x55855b839323 - std::sync::once::Once::call_once::h10369dab624b1ae6
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/sync/once.rs:225
[INFO] [stderr]   14:     0x55855b830342 - lazy_static::lazy::Lazy<T>::get::hc3dadf9be66526b4
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:27
[INFO] [stderr]   15:     0x55855b830342 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h9e0aaf0ace53365c
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/<::lazy_static::__lazy_static_internal macros>:12
[INFO] [stderr]   16:     0x55855b830342 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h3314332fb516c123
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/<::lazy_static::__lazy_static_internal macros>:13
[INFO] [stderr]   17:     0x55855b82d8fa - build_script_build::llvm_config::hfbb9ae7f60ae4b64
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:167
[INFO] [stderr]   18:     0x55855b82f030 - build_script_build::get_llvm_cflags::ha38125e3e8845956
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:273
[INFO] [stderr]   19:     0x55855b82f42e - build_script_build::main::hce2952a99afbdccd
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:305
[INFO] [stderr]   20:     0x55855b835100 - std::rt::lang_start::{{closure}}::he3b8b24fa712738f
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55855bae9c43 - std::rt::lang_start_internal::{{closure}}::h25858f7dd6124e1a
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   22:     0x55855bae9c43 - std::panicking::try::do_call::h51cc84caa9338daf
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   23:     0x55855baf23ca - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   24:     0x55855baea74d - std::panicking::try::heb9d5da34e3fa707
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   25:     0x55855baea74d - std::panic::catch_unwind::he2a2041733180f4c
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   26:     0x55855baea74d - std::rt::lang_start_internal::h9e24cef029766dfd
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   27:     0x55855b8350d9 - std::rt::lang_start::h6b2aaa438c60fb51
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   28:     0x55855b8303da - main
[INFO] [stderr]   29:     0x7fa35ae652e1 - __libc_start_main
[INFO] [stderr]   30:     0x55855b82c53a - _start
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "aaf0bfa0e1491b6b2d50571ad44446bb9ddc1e2ae7f46458e02cb9187b82e29a"`
[INFO] running `"docker" "rm" "-f" "aaf0bfa0e1491b6b2d50571ad44446bb9ddc1e2ae7f46458e02cb9187b82e29a"`
[INFO] [stdout] aaf0bfa0e1491b6b2d50571ad44446bb9ddc1e2ae7f46458e02cb9187b82e29a