Sep 06 08:55:14.516 INFO checking cervus-0.3.6 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 08:55:14.516 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 08:55:14.516 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-7/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 08:55:14.647 INFO blam! 3d38836df7a94baa7e435afc7991520d342143891ad26471202a396c66cbcd2e
Sep 06 08:55:14.648 INFO running `"docker" "start" "-a" "3d38836df7a94baa7e435afc7991520d342143891ad26471202a396c66cbcd2e"`
Sep 06 08:55:15.485 INFO kablam! usermod: no changes
Sep 06 08:55:15.537 INFO kablam!    Compiling semver-parser v0.6.2
Sep 06 08:55:16.454 INFO kablam!    Compiling semver v0.4.1
Sep 06 08:55:17.930 INFO kablam!    Compiling llvm-sys v38.2.0
Sep 06 08:55:20.425 INFO kablam! error: failed to run custom build command for `llvm-sys v38.2.0`
Sep 06 08:55:20.425 INFO kablam! process didn't exit successfully: `/target/debug/build/llvm-sys-83498f4f1af5096c/build-script-build` (exit code: 101)
Sep 06 08:55:20.425 INFO kablam! --- stdout
Sep 06 08:55:20.425 INFO kablam! Didn't find usable system-wide LLVM.
Sep 06 08:55:20.425 INFO kablam! LLVM_SYS_38_PREFIX not set, not using precompiled binaries
Sep 06 08:55:20.425 INFO kablam! LLVM_SYS_38_AUTOBUILD not set, will not automatically compile LLVM
Sep 06 08:55:20.425 INFO kablam! 
Sep 06 08:55:20.425 INFO kablam! --- stderr
Sep 06 08:55:20.425 INFO kablam! thread 'main' panicked at 'Could not find a compatible version of LLVM', /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/build.rs:77:9
Sep 06 08:55:20.425 INFO kablam! stack backtrace:
Sep 06 08:55:20.425 INFO kablam!    0:     0x55f645c3d46e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h8a3717aa058b4444
Sep 06 08:55:20.425 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 06 08:55:20.425 INFO kablam!    1:     0x55f645c2d3b6 - std::sys_common::backtrace::print::h617f5662cea50e67
Sep 06 08:55:20.425 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 06 08:55:20.425 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 06 08:55:20.425 INFO kablam!    2:     0x55f645c2b74d - std::panicking::default_hook::{{closure}}::h45bb696cfc423488
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panicking.rs:211
Sep 06 08:55:20.426 INFO kablam!    3:     0x55f645c2b4c0 - std::panicking::default_hook::h4902fe318897fea2
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panicking.rs:227
Sep 06 08:55:20.426 INFO kablam!    4:     0x55f645c2bdbc - std::panicking::rust_panic_with_hook::h2d79c14c8c515345
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panicking.rs:477
Sep 06 08:55:20.426 INFO kablam!    5:     0x55f645b8e62f - std::panicking::begin_panic::hd83a97dd02a4ea26
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libstd/panicking.rs:411
Sep 06 08:55:20.426 INFO kablam!    6:     0x55f645a7bf28 - core::ops::function::FnOnce::call_once::hd4a39fdd780242ec
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/build.rs:77
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libcore/ops/function.rs:238
Sep 06 08:55:20.426 INFO kablam!    7:     0x55f645a84602 - <lazy_static::lazy::Lazy<T>>::get::{{closure}}::h04ca908faab8103a
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:24
Sep 06 08:55:20.426 INFO kablam!    8:     0x55f645a8454a - std::sync::once::Once::call_once::{{closure}}::he4adb2c1443f1a59
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libstd/sync/once.rs:234
Sep 06 08:55:20.426 INFO kablam!    9:     0x55f645c2b0c0 - std::sync::once::Once::call_inner::hc8545fb071af0cc2
Sep 06 08:55:20.426 INFO kablam!                                at libstd/sync/once.rs:351
Sep 06 08:55:20.426 INFO kablam!   10:     0x55f645a8449a - std::sync::once::Once::call_once::he5e0464eb5e6adf6
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libstd/sync/once.rs:234
Sep 06 08:55:20.426 INFO kablam!   11:     0x55f645a774de - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h6d46b61acef08ce4
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:23
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/<__lazy_static_internal macros>:13
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/<__lazy_static_internal macros>:14
Sep 06 08:55:20.426 INFO kablam!   12:     0x55f645a75839 - build_script_build::llvm_config::h1ec6707ebb8d463b
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/build.rs:163
Sep 06 08:55:20.426 INFO kablam!   13:     0x55f645a76714 - build_script_build::main::h1653b538a9d641e1
Sep 06 08:55:20.426 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-38.2.0/build.rs:224
Sep 06 08:55:20.426 INFO kablam!   14:     0x55f645a842bf - std::rt::lang_start::{{closure}}::h4f2c8e2ae12e69a5
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 06 08:55:20.426 INFO kablam!   15:     0x55f645c2b852 - std::panicking::try::do_call::hf986ca4f663b7a95
Sep 06 08:55:20.426 INFO kablam!                                at libstd/rt.rs:59
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panicking.rs:310
Sep 06 08:55:20.426 INFO kablam!   16:     0x55f645c4fab9 - __rust_maybe_catch_panic
Sep 06 08:55:20.426 INFO kablam!                                at libpanic_unwind/lib.rs:103
Sep 06 08:55:20.426 INFO kablam!   17:     0x55f645c38c15 - std::rt::lang_start_internal::h1fa2095e36818e42
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panicking.rs:289
Sep 06 08:55:20.426 INFO kablam!                                at libstd/panic.rs:392
Sep 06 08:55:20.426 INFO kablam!                                at libstd/rt.rs:58
Sep 06 08:55:20.426 INFO kablam!   18:     0x55f645a84297 - std::rt::lang_start::h53d4a92ccea3b0bc
Sep 06 08:55:20.426 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 06 08:55:20.426 INFO kablam!   19:     0x55f645a77529 - main
Sep 06 08:55:20.426 INFO kablam!   20:     0x7f5e6e36582f - __libc_start_main
Sep 06 08:55:20.426 INFO kablam!   21:     0x55f645a74498 - _start
Sep 06 08:55:20.426 INFO kablam!   22:                0x0 - <unknown>
Sep 06 08:55:20.428 INFO kablam! 
Sep 06 08:55:20.430 INFO kablam! su: No module specific data is present
Sep 06 08:55:21.090 INFO running `"docker" "rm" "-f" "3d38836df7a94baa7e435afc7991520d342143891ad26471202a396c66cbcd2e"`
Sep 06 08:55:21.204 INFO blam! 3d38836df7a94baa7e435afc7991520d342143891ad26471202a396c66cbcd2e