[INFO] updating cached repository https://github.com/mattjquinn/jcompiler
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1f135314d4bde54f2830facfd82048328874c2d
[INFO] checking mattjquinn/jcompiler against try#38f08371587f97c145dedb2c055ac7b01bf1e788 for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattjquinn%2Fjcompiler" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattjquinn/jcompiler on toolchain 38f08371587f97c145dedb2c055ac7b01bf1e788
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mattjquinn/jcompiler
[INFO] finished tweaking git repo https://github.com/mattjquinn/jcompiler
[INFO] tweaked toml for git repo https://github.com/mattjquinn/jcompiler written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mattjquinn/jcompiler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "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] 29bd71838e6f2b1c33c1c4dbab5943f2401acbacc9759ba1c5b1de4b77eaf00f
[INFO] running `"docker" "start" "-a" "29bd71838e6f2b1c33c1c4dbab5943f2401acbacc9759ba1c5b1de4b77eaf00f"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking ascii v0.9.1
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking criterion-plot v0.3.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v70.1.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/llvm-sys-95ef2bf29ccf2924/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] Found LLVM version 6.0.0 on PATH, but need 7.0.0.
[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-70.1.0/build.rs:73:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5618d675cf64 - backtrace::backtrace::libunwind::trace::hef6fc58b54b0c273
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5618d675cf64 - backtrace::backtrace::trace_unsynchronized::hed70e532b71a8977
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5618d675cf64 - std::sys_common::backtrace::_print_fmt::hb989f9624749a87e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x5618d675cf64 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h752e880115b2e6b8
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]    4:     0x5618d677d68c - core::fmt::write::h8587a0223398998a
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1028
[INFO] [stderr]    5:     0x5618d6759117 - std::io::Write::write_fmt::h739e1721b42dc764
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x5618d675f55e - std::sys_common::backtrace::_print::he941da29bef7c30c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:65
[INFO] [stderr]    7:     0x5618d675f55e - std::sys_common::backtrace::print::haf56476e740dbe1b
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:50
[INFO] [stderr]    8:     0x5618d675f55e - std::panicking::default_hook::{{closure}}::ha490775aa99416ce
[INFO] [stderr]                                at src/libstd/panicking.rs:189
[INFO] [stderr]    9:     0x5618d675f261 - std::panicking::default_hook::h27c65cbf7bc04c7a
[INFO] [stderr]                                at src/libstd/panicking.rs:206
[INFO] [stderr]   10:     0x5618d675fc55 - std::panicking::rust_panic_with_hook::h5640e0014aa25ab8
[INFO] [stderr]                                at src/libstd/panicking.rs:469
[INFO] [stderr]   11:     0x5618d66d45a3 - std::panicking::begin_panic::hc8b8e4fb46351f18
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libstd/panicking.rs:403
[INFO] [stderr]   12:     0x5618d64fbbc0 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::ha855d8fe159c9d0b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:73
[INFO] [stderr]   13:     0x5618d64fbbc0 - core::ops::function::FnOnce::call_once::h94e82b11951691dd
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libcore/ops/function.rs:227
[INFO] [stderr]   14:     0x5618d64f9f6f - lazy_static::lazy::Lazy<T>::get::{{closure}}::h63d630f5d8592f8d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.2.0/src/inline_lazy.rs:28
[INFO] [stderr]   15:     0x5618d64fee4b - std::sync::once::Once::call_once::{{closure}}::hbd6bb218b46d7196
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libstd/sync/once.rs:225
[INFO] [stderr]   16:     0x5618d675ca88 - std::sync::once::Once::call_inner::h2a49ca79f0e06e96
[INFO] [stderr]                                at src/libstd/sync/once.rs:392
[INFO] [stderr]   17:     0x5618d64feca3 - std::sync::once::Once::call_once::h67e8e0c949a90107
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libstd/sync/once.rs:225
[INFO] [stderr]   18:     0x5618d64f8675 - lazy_static::lazy::Lazy<T>::get::h1c3b17b3bb7c8757
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.2.0/src/inline_lazy.rs:27
[INFO] [stderr]   19:     0x5618d64f8675 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h4a7a6c6f0c23611b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/<::lazy_static::__lazy_static_internal macros>:16
[INFO] [stderr]   20:     0x5618d64f8675 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h726ccc103ef31445
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/<::lazy_static::__lazy_static_internal macros>:18
[INFO] [stderr]   21:     0x5618d64f5f6a - build_script_build::llvm_config::h9c8a646748751a13
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:167
[INFO] [stderr]   22:     0x5618d64f75e0 - build_script_build::get_llvm_cflags::hbef3b9b26653153c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:273
[INFO] [stderr]   23:     0x5618d64f79ae - build_script_build::main::h26ad7c0594b67044
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:300
[INFO] [stderr]   24:     0x5618d64fa980 - std::rt::lang_start::{{closure}}::h0c533c86c5991c4b
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libstd/rt.rs:61
[INFO] [stderr]   25:     0x5618d675f683 - std::rt::lang_start_internal::{{closure}}::h5f0ee1fc0a13fd44
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   26:     0x5618d675f683 - std::panicking::try::do_call::h1b76048f8cff5994
[INFO] [stderr]                                at src/libstd/panicking.rs:288
[INFO] [stderr]   27:     0x5618d6767b3a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   28:     0x5618d676014d - std::panicking::try::hb92b65c4d6ee9dd4
[INFO] [stderr]                                at src/libstd/panicking.rs:267
[INFO] [stderr]   29:     0x5618d676014d - std::panic::catch_unwind::hc76e28cdfa615edb
[INFO] [stderr]                                at src/libstd/panic.rs:396
[INFO] [stderr]   30:     0x5618d676014d - std::rt::lang_start_internal::h8abfd636cde844de
[INFO] [stderr]                                at src/libstd/rt.rs:47
[INFO] [stderr]   31:     0x5618d64fa959 - std::rt::lang_start::h328da276d42e7373
[INFO] [stderr]                                at /rustc/38f08371587f97c145dedb2c055ac7b01bf1e788/src/libstd/rt.rs:61
[INFO] [stderr]   32:     0x5618d64f86fa - main
[INFO] [stderr]   33:     0x7fc5c54a3b97 - __libc_start_main
[INFO] [stderr]   34:     0x5618d64f4b6a - _start
[INFO] [stderr]   35:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "29bd71838e6f2b1c33c1c4dbab5943f2401acbacc9759ba1c5b1de4b77eaf00f"`
[INFO] running `"docker" "rm" "-f" "29bd71838e6f2b1c33c1c4dbab5943f2401acbacc9759ba1c5b1de4b77eaf00f"`
[INFO] [stdout] 29bd71838e6f2b1c33c1c4dbab5943f2401acbacc9759ba1c5b1de4b77eaf00f