[INFO] fetching crate arcon 0.1.0...
[INFO] extracting crate arcon 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/arcon/0.1.0
[INFO] extracting crate arcon 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/arcon/0.1.0
[INFO] validating manifest of arcon-0.1.0 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 arcon-0.1.0 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 arcon-0.1.0
[INFO] finished frobbing arcon-0.1.0
[INFO] frobbed toml for arcon-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/arcon/0.1.0/Cargo.toml
[INFO] started frobbing arcon-0.1.0
[INFO] finished frobbing arcon-0.1.0
[INFO] frobbed toml for arcon-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/arcon/0.1.0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arcon_macros v0.1.0
[INFO] [stderr]   Downloaded keyby v0.1.0
[INFO] [stderr]   Downloaded weld v0.3.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arcon-0.1.0 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-4/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/arcon/0.1.0:/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] 7e5d4e061a3fab763c2a6638e5a1544bb07ab45b0046e9382e8da299f24527e5
[INFO] running `"docker" "start" "-a" "7e5d4e061a3fab763c2a6638e5a1544bb07ab45b0046e9382e8da299f24527e5"`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling weld v0.3.0
[INFO] [stderr]    Compiling oncemutex v0.1.1
[INFO] [stderr]    Compiling sequence_trie v0.3.6
[INFO] [stderr]    Compiling as_num v0.2.5
[INFO] [stderr]    Compiling bitfields v0.2.0
[INFO] [stderr]    Compiling synchronoise v0.4.0
[INFO] [stderr]    Compiling protoc v2.8.0
[INFO] [stderr]    Compiling protobuf-codegen v2.8.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling tokio-retry v0.2.0
[INFO] [stderr]    Compiling llvm-sys v60.4.1
[INFO] [stderr]    Compiling kompact-component-derive v0.7.0
[INFO] [stderr]    Compiling kompact-actor-derive v0.7.0
[INFO] [stderr]    Compiling keyby v0.1.0
[INFO] [stderr]    Compiling arcon_macros v0.1.0
[INFO] [stderr]    Compiling spaniel v0.1.0
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling executors v0.4.4
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v60.4.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/llvm-sys-33865f301b6ead08/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 3.8.0 on PATH, but need 6.0.1.
[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_60_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-60.4.1/build.rs:63:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5608f8b0285b - 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:     0x5608f8b0285b - 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:     0x5608f8b0285b - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5608f8b0285b - std::sys_common::backtrace::print::h31646c3786c57441
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5608f8b0285b - std::panicking::default_hook::{{closure}}::hda785e768c746ae7
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x5608f8b02537 - std::panicking::default_hook::h0c4b76f338614ef1
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x5608f8b02fd0 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x5608f8aa9908 - std::panicking::begin_panic::hcd2a54803b1b958f
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x5608f88a6a7e - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::ha70edad527e48954
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/build.rs:63
[INFO] [stderr]    9:     0x5608f88a6a7e - core::ops::function::FnOnce::call_once::h245ae08779920f20
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libcore/ops/function.rs:231
[INFO] [stderr]   10:     0x5608f88aa152 - lazy_static::lazy::Lazy<T>::get::{{closure}}::h5d978350b2b8e41a
[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:     0x5608f88a44ab - std::sync::once::Once::call_once::{{closure}}::ha10cc0d3f89f10d7
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/sync/once.rs:225
[INFO] [stderr]   12:     0x5608f8aff9f4 - std::sync::once::Once::call_inner::h2daeac7a28e6dd90
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   13:     0x5608f88a4383 - std::sync::once::Once::call_once::h2c2e79910bffe081
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/sync/once.rs:225
[INFO] [stderr]   14:     0x5608f88a1b02 - lazy_static::lazy::Lazy<T>::get::h465b145180423070
[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:     0x5608f88a1b02 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::hb23d45bcd9677769
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/<::lazy_static::__lazy_static_internal macros>:12
[INFO] [stderr]   16:     0x5608f88a1b02 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h7dde0104e0b693e3
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/<::lazy_static::__lazy_static_internal macros>:13
[INFO] [stderr]   17:     0x5608f889f17a - build_script_build::llvm_config::h88942a83909bc3be
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/build.rs:150
[INFO] [stderr]   18:     0x5608f88a0890 - build_script_build::get_llvm_cflags::h6d6de2ebd50baed7
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/build.rs:259
[INFO] [stderr]   19:     0x5608f88a0c8e - build_script_build::main::h9891b74bd8af7c0c
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-60.4.1/build.rs:289
[INFO] [stderr]   20:     0x5608f88a52c0 - std::rt::lang_start::{{closure}}::he66c90b30432f61c
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x5608f8b029d3 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   22:     0x5608f8b029d3 - std::panicking::try::do_call::h480cafa68c9928b4
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   23:     0x5608f8b0afba - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   24:     0x5608f8b034dd - std::panicking::try::he0549d0299de204a
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   25:     0x5608f8b034dd - std::panic::catch_unwind::h422dc2db98f03517
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   26:     0x5608f8b034dd - std::rt::lang_start_internal::h121de03325a3f900
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   27:     0x5608f88a5299 - std::rt::lang_start::h410c18517bf480e9
[INFO] [stderr]                                at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64
[INFO] [stderr]   28:     0x5608f88a1b9a - main
[INFO] [stderr]   29:     0x7f29906df2e1 - __libc_start_main
[INFO] [stderr]   30:     0x5608f889df0a - _start
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7e5d4e061a3fab763c2a6638e5a1544bb07ab45b0046e9382e8da299f24527e5"`
[INFO] running `"docker" "rm" "-f" "7e5d4e061a3fab763c2a6638e5a1544bb07ab45b0046e9382e8da299f24527e5"`
[INFO] [stdout] 7e5d4e061a3fab763c2a6638e5a1544bb07ab45b0046e9382e8da299f24527e5