[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] e736f8260d16c9f7e7fd68fca9f79b93d3c84dee
[INFO] checking mattjquinn/jcompiler against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattjquinn%2Fjcompiler" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattjquinn/jcompiler on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-0/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] c9281a9f06194efe0428f591f7dad100434130e8bfb9b8b752bf9fac64c2b5db
[INFO] running `"docker" "start" "-a" "c9281a9f06194efe0428f591f7dad100434130e8bfb9b8b752bf9fac64c2b5db"`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking ascii v0.9.1
[INFO] [stderr]     Checking ieee754 v0.2.6
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking criterion-plot v0.3.0
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]     Checking rand v0.7.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling pest_derive v2.1.0
[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-ef842f9641a7eb7f/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:     0x55fe606c92b4 - backtrace::backtrace::libunwind::trace::hb657e419eb382f5a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x55fe606c92b4 - backtrace::backtrace::trace_unsynchronized::h63de2160a81d17d0
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55fe606c92b4 - std::sys_common::backtrace::_print_fmt::hc542595b8774416c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x55fe606c92b4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8b5627db94fbf233
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55fe606ef33c - core::fmt::write::h7b159f05674a9488
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1069
[INFO] [stderr]    5:     0x55fe606c55a3 - std::io::Write::write_fmt::h8379227660cddc2e
[INFO] [stderr]                                at src/libstd/io/mod.rs:1504
[INFO] [stderr]    6:     0x55fe606cbb25 - std::sys_common::backtrace::_print::hb3b286bfcc94e0bc
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55fe606cbb25 - std::sys_common::backtrace::print::hd75a13b009bc2bde
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55fe606cbb25 - std::panicking::default_hook::{{closure}}::h95885250e71c9db2
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x55fe606cb862 - std::panicking::default_hook::h9c7a080b2c36bec1
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x55fe606cc182 - std::panicking::rust_panic_with_hook::h3a55f8a9f7c957a1
[INFO] [stderr]                                at src/libstd/panicking.rs:511
[INFO] [stderr]   11:     0x55fe6062a281 - std::panicking::begin_panic::hb2b6919168dfef9f
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/panicking.rs:438
[INFO] [stderr]   12:     0x55fe6049ee97 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::h0045ffc9f7e463a6
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:73
[INFO] [stderr]   13:     0x55fe6049ee97 - core::ops::function::FnOnce::call_once::hb4a9f01045bf9f5b
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libcore/ops/function.rs:232
[INFO] [stderr]   14:     0x55fe604a889b - lazy_static::lazy::Lazy<T>::get::{{closure}}::h09f5ab93ca0e200e
[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:     0x55fe604a0b32 - std::sync::once::Once::call_once::{{closure}}::h3d5beeb9ed307de2
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/sync/once.rs:264
[INFO] [stderr]   16:     0x55fe606c8d48 - std::sync::once::Once::call_inner::h2ca8dd6bf8dee347
[INFO] [stderr]                                at src/libstd/sync/once.rs:416
[INFO] [stderr]   17:     0x55fe604a08c1 - std::sync::once::Once::call_once::h0fb6d2348c6e6390
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/sync/once.rs:264
[INFO] [stderr]   18:     0x55fe6049a3d5 - lazy_static::lazy::Lazy<T>::get::h87ad0ac7f33de309
[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:     0x55fe6049a3d5 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::hf228854a8e35d81a
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.2.0/src/lib.rs:139
[INFO] [stderr]   20:     0x55fe6049a3d5 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h0a0fecdc5c5e5863
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.2.0/src/lib.rs:141
[INFO] [stderr]   21:     0x55fe60498024 - build_script_build::llvm_config::hc134cce214cd0a2b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:167
[INFO] [stderr]   22:     0x55fe604993b0 - build_script_build::get_llvm_cflags::h5f56eb59b2fa2f0c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:273
[INFO] [stderr]   23:     0x55fe60499794 - build_script_build::main::ha5def4f3cec8ff6c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:300
[INFO] [stderr]   24:     0x55fe6049de5b - std::rt::lang_start::{{closure}}::hde66ab355f38714c
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/rt.rs:67
[INFO] [stderr]   25:     0x55fe606cc5c8 - std::rt::lang_start_internal::{{closure}}::h976a57c2451b294c
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   26:     0x55fe606cc5c8 - std::panicking::try::do_call::he5f80a3843ae2933
[INFO] [stderr]                                at src/libstd/panicking.rs:331
[INFO] [stderr]   27:     0x55fe606cc5c8 - std::panicking::try::h3e0cfec6df77fa26
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   28:     0x55fe606cc5c8 - std::panic::catch_unwind::h6f2dd2e86d8bf8b6
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   29:     0x55fe606cc5c8 - std::rt::lang_start_internal::hb175d88e70ae7611
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   30:     0x55fe6049de37 - std::rt::lang_start::h20d9e495d6af4431
[INFO] [stderr]                                at /rustc/45d050cde277b22a755847338f2acc2c7b834141/src/libstd/rt.rs:67
[INFO] [stderr]   31:     0x55fe6049a46a - main
[INFO] [stderr]   32:     0x7f7c0e16cb97 - __libc_start_main
[INFO] [stderr]   33:     0x55fe60496c9a - _start
[INFO] [stderr]   34:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c9281a9f06194efe0428f591f7dad100434130e8bfb9b8b752bf9fac64c2b5db"`
[INFO] running `"docker" "rm" "-f" "c9281a9f06194efe0428f591f7dad100434130e8bfb9b8b752bf9fac64c2b5db"`
[INFO] [stdout] c9281a9f06194efe0428f591f7dad100434130e8bfb9b8b752bf9fac64c2b5db