[INFO] fetching crate jcompiler 0.1.0...
[INFO] checking jcompiler-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate jcompiler 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate jcompiler 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jcompiler 0.1.0
[INFO] finished tweaking crates.io crate jcompiler 0.1.0
[INFO] tweaked toml for crates.io crate jcompiler 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8607cffce609cb38bad82218b1e71075795628461574e46fc9faa2170c788a9b
[INFO] running `"docker" "start" "-a" "8607cffce609cb38bad82218b1e71075795628461574e46fc9faa2170c788a9b"`
[INFO] [stderr]    Compiling llvm-sys v70.2.1
[INFO] [stderr]     Checking quickcheck v0.3.2
[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/rustwide/target/debug/build/llvm-sys-155e09a2cb9fb431/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 6.0.0 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/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:73:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55fb7c2a738a - backtrace::backtrace::libunwind::trace::hef9286fd8c27fd45
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55fb7c2a738a - backtrace::backtrace::trace_unsynchronized::h92082381ae588065
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55fb7c2a738a - std::sys_common::backtrace::_print_fmt::h00c64aa4e7e3372c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x55fb7c2a738a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc568c1817d410574
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]    4:     0x55fb7c2c7c1c - core::fmt::write::he445cb7086c25009
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1028
[INFO] [stderr]    5:     0x55fb7c2a3477 - std::io::Write::write_fmt::he0bcb31f8a60d79b
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x55fb7c2a9a0e - std::sys_common::backtrace::_print::h45adb36ea9b21f61
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:65
[INFO] [stderr]    7:     0x55fb7c2a9a0e - std::sys_common::backtrace::print::h223c050f40432de9
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:50
[INFO] [stderr]    8:     0x55fb7c2a9a0e - std::panicking::default_hook::{{closure}}::hf3487b4e375d5982
[INFO] [stderr]                                at src/libstd/panicking.rs:189
[INFO] [stderr]    9:     0x55fb7c2a9711 - std::panicking::default_hook::h9d095a3a991b35b0
[INFO] [stderr]                                at src/libstd/panicking.rs:206
[INFO] [stderr]   10:     0x55fb7c2aa105 - std::panicking::rust_panic_with_hook::h907bb8227c8498d1
[INFO] [stderr]                                at src/libstd/panicking.rs:469
[INFO] [stderr]   11:     0x55fb7c257b23 - std::panicking::begin_panic::h164467d7052e19da
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/panicking.rs:403
[INFO] [stderr]   12:     0x55fb7bfc300e - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::h7d27e3f974bbe7f5
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:73
[INFO] [stderr]   13:     0x55fb7bfc300e - core::ops::function::FnOnce::call_once::h781d0b4f07bfb00a
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libcore/ops/function.rs:227
[INFO] [stderr]   14:     0x55fb7bfc135f - lazy_static::lazy::Lazy<T>::get::{{closure}}::h27eb3202680dc87d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31
[INFO] [stderr]   15:     0x55fb7bfc7a4b - std::sync::once::Once::call_once::{{closure}}::h755b075743501077
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/sync/once.rs:225
[INFO] [stderr]   16:     0x55fb7c2a6e88 - std::sync::once::Once::call_inner::h18708d08d5bd5b65
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   17:     0x55fb7bfc79d3 - std::sync::once::Once::call_once::h9c5f347134233f0b
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/sync/once.rs:225
[INFO] [stderr]   18:     0x55fb7bfbf975 - lazy_static::lazy::Lazy<T>::get::h6276d75fdb42d5cd
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30
[INFO] [stderr]   19:     0x55fb7bfbf975 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::hddf0fc5eaba9a3e1
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/<::lazy_static::__lazy_static_internal macros>:16
[INFO] [stderr]   20:     0x55fb7bfbf975 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::ha5ee7bc693873566
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/<::lazy_static::__lazy_static_internal macros>:18
[INFO] [stderr]   21:     0x55fb7bfbccea - build_script_build::llvm_config::h85faed150cc5bcc2
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:167
[INFO] [stderr]   22:     0x55fb7bfbe6b5 - build_script_build::get_llvm_cflags::h7087d876f7a9a795
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:273
[INFO] [stderr]   23:     0x55fb7bfbeade - build_script_build::main::h44078f87e358c321
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.2.1/build.rs:305
[INFO] [stderr]   24:     0x55fb7bfc1d70 - std::rt::lang_start::{{closure}}::h1cf17e8215401211
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]   25:     0x55fb7c2a9b33 - std::rt::lang_start_internal::{{closure}}::h87ac7726b4ada2a9
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   26:     0x55fb7c2a9b33 - std::panicking::try::do_call::he4d58a26927f0537
[INFO] [stderr]                                at src/libstd/panicking.rs:288
[INFO] [stderr]   27:     0x55fb7c2b20ca - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   28:     0x55fb7c2aa5fd - std::panicking::try::hc8ad7011d3baf74d
[INFO] [stderr]                                at src/libstd/panicking.rs:267
[INFO] [stderr]   29:     0x55fb7c2aa5fd - std::panic::catch_unwind::haaf07c0b1c45cbc8
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   30:     0x55fb7c2aa5fd - std::rt::lang_start_internal::h53afdaeda14f9890
[INFO] [stderr]                                at src/libstd/rt.rs:47
[INFO] [stderr]   31:     0x55fb7bfc1d49 - std::rt::lang_start::ha384bae08eec8084
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]   32:     0x55fb7bfbf9fa - main
[INFO] [stderr]   33:     0x7fa470495b97 - __libc_start_main
[INFO] [stderr]   34:     0x55fb7bfbb8ea - _start
[INFO] [stderr]   35:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "8607cffce609cb38bad82218b1e71075795628461574e46fc9faa2170c788a9b"`
[INFO] running `"docker" "rm" "-f" "8607cffce609cb38bad82218b1e71075795628461574e46fc9faa2170c788a9b"`
[INFO] [stdout] 8607cffce609cb38bad82218b1e71075795628461574e46fc9faa2170c788a9b