[INFO] updating cached repository alexander-koch/loopc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alexander-koch/loopc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alexander-koch/loopc" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/alexander-koch/loopc"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/alexander-koch/loopc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alexander-koch/loopc" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/alexander-koch/loopc"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/alexander-koch/loopc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4cb724edce1e0f4798421803361a6ce35db94617
[INFO] sha for GitHub repo alexander-koch/loopc: 4cb724edce1e0f4798421803361a6ce35db94617
[INFO] validating manifest of alexander-koch/loopc on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alexander-koch/loopc on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alexander-koch/loopc
[INFO] finished frobbing alexander-koch/loopc
[INFO] frobbed toml for alexander-koch/loopc written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/alexander-koch/loopc/Cargo.toml
[INFO] started frobbing alexander-koch/loopc
[INFO] finished frobbing alexander-koch/loopc
[INFO] frobbed toml for alexander-koch/loopc written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/alexander-koch/loopc/Cargo.toml
[INFO] crate alexander-koch/loopc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking alexander-koch/loopc against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/alexander-koch/loopc:/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=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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b6572dc7992844f01c86b80efa20ea5bbcedcae4a1aa89d0c4c389d5322492c3
[INFO] running `"docker" "start" "-a" "b6572dc7992844f01c86b80efa20ea5bbcedcae4a1aa89d0c4c389d5322492c3"`
[INFO] [stderr]    Compiling llvm-sys v50.0.3
[INFO] [stderr]     Checking env_logger v0.5.3
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v50.0.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/llvm-sys-28b89c92a06d1ac1/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 3.8.0 on PATH, but need 5.0.3.
[INFO] [stderr] Didn't find usable system-wide LLVM.
[INFO] [stderr] LLVM_SYS_50_PREFIX not set, not using precompiled binaries
[INFO] [stderr] LLVM_SYS_50_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', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/build.rs:77:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55aa7bf242fb - backtrace::backtrace::libunwind::trace::hbfb69e72f505529b
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55aa7bf242fb - backtrace::backtrace::trace_unsynchronized::hac9ea77fa06b91bd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55aa7bf242fb - std::sys_common::backtrace::_print::hf6f722cabcf8c26d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55aa7bf242fb - std::sys_common::backtrace::print::h9cca5983945bdb52
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55aa7bf242fb - std::panicking::default_hook::{{closure}}::h2fab7259edc3a80d
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55aa7bf23fd7 - std::panicking::default_hook::ha99acf6d9268d46d
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55aa7bf24a70 - std::panicking::rust_panic_with_hook::hddab2c65ce92e648
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55aa7befe898 - std::panicking::begin_panic::h9d931cfffa272055
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x55aa7bd4bee3 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::h0456ff15ff4ea445
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/build.rs:77
[INFO] [stderr]    9:     0x55aa7bd4bee3 - core::ops::function::FnOnce::call_once::h8101549f832f0b8a
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libcore/ops/function.rs:231
[INFO] [stderr]   10:     0x55aa7bd57ef3 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hd78398ee99900131
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:24
[INFO] [stderr]   11:     0x55aa7bd4f95b - std::sync::once::Once::call_once::{{closure}}::h6fa11dc6d40054cc
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/sync/once.rs:225
[INFO] [stderr]   12:     0x55aa7bf21684 - std::sync::once::Once::call_inner::hec6811931650cc9e
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   13:     0x55aa7bd4f833 - std::sync::once::Once::call_once::h8dd86568d84f670b
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/sync/once.rs:225
[INFO] [stderr]   14:     0x55aa7bd46a3f - lazy_static::lazy::Lazy<T>::get::hb70ed0b84ab2f39d
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-0.2.11/src/lazy.rs:23
[INFO] [stderr]   15:     0x55aa7bd46a3f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h0c4f79a3f4d51906
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/<::lazy_static::__lazy_static_internal macros>:13
[INFO] [stderr]   16:     0x55aa7bd46a3f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h17d73377ab960690
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/<::lazy_static::__lazy_static_internal macros>:14
[INFO] [stderr]   17:     0x55aa7bd442da - build_script_build::llvm_config::hff66e49787c72b62
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/build.rs:164
[INFO] [stderr]   18:     0x55aa7bd45de3 - build_script_build::main::h9bf14e34be9c38e6
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-50.0.3/build.rs:296
[INFO] [stderr]   19:     0x55aa7bd57fc0 - std::rt::lang_start::{{closure}}::h94ad153030963ae4
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   20:     0x55aa7bf24473 - std::rt::lang_start_internal::{{closure}}::hbec6d1ff7b00d029
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   21:     0x55aa7bf24473 - std::panicking::try::do_call::h83e51489f66cd002
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   22:     0x55aa7bf2c8ca - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   23:     0x55aa7bf24f7d - std::panicking::try::hb1deae6a8854c8be
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   24:     0x55aa7bf24f7d - std::panic::catch_unwind::hff09c33b8b66b7a2
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   25:     0x55aa7bf24f7d - std::rt::lang_start_internal::h01b3f7988e3fe75d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   26:     0x55aa7bd57f99 - std::rt::lang_start::h026a26fea428e9f3
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   27:     0x55aa7bd46a8a - main
[INFO] [stderr]   28:     0x7fcc919472e1 - __libc_start_main
[INFO] [stderr]   29:     0x55aa7bd4306a - _start
[INFO] [stderr]   30:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "b6572dc7992844f01c86b80efa20ea5bbcedcae4a1aa89d0c4c389d5322492c3"`
[INFO] running `"docker" "rm" "-f" "b6572dc7992844f01c86b80efa20ea5bbcedcae4a1aa89d0c4c389d5322492c3"`
[INFO] [stdout] b6572dc7992844f01c86b80efa20ea5bbcedcae4a1aa89d0c4c389d5322492c3