[INFO] updating cached repository https://github.com/fexolm/jfec
[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] 6de42e1766324b065d6ef53eb278677017d115bc
[INFO] checking fexolm/jfec against master#212aa3ea28d91a97d1e1261709c0b6e6790788e6 for pr-69340
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffexolm%2Fjfec" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fexolm/jfec on toolchain 212aa3ea28d91a97d1e1261709c0b6e6790788e6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fexolm/jfec
[INFO] finished tweaking git repo https://github.com/fexolm/jfec
[INFO] tweaked toml for git repo https://github.com/fexolm/jfec written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/fexolm/jfec already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "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] 1d135e434bb07cd9aaa77701b7b74d39a0e635206885c4b2914b416f1976224d
[INFO] running `"docker" "start" "-a" "1d135e434bb07cd9aaa77701b7b74d39a0e635206885c4b2914b416f1976224d"`
[INFO] [stderr]     Checking cast v0.1.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking simplelog v0.4.4
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking criterion-stats v0.1.3
[INFO] [stderr]     Checking criterion-plot v0.1.3
[INFO] [stderr]     Checking criterion v0.1.2
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[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-ae8a3b74c79eed33/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:     0x55cec2fe00a4 - backtrace::backtrace::libunwind::trace::h2f6ff4a33b1e15bd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x55cec2fe00a4 - backtrace::backtrace::trace_unsynchronized::h1c74f218935a964e
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55cec2fe00a4 - std::sys_common::backtrace::_print_fmt::he616a2ffb42d7095
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x55cec2fe00a4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3630928d424e5705
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55cec3000e5c - core::fmt::write::h51cecfc4364da7ce
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1052
[INFO] [stderr]    5:     0x55cec2fdc0d7 - std::io::Write::write_fmt::hc4f750c57e05a637
[INFO] [stderr]                                at src/libstd/io/mod.rs:1428
[INFO] [stderr]    6:     0x55cec2fe2965 - std::sys_common::backtrace::_print::hf5f697e6be8faefc
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55cec2fe2965 - std::sys_common::backtrace::print::h82e92953d052a9e7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55cec2fe2965 - std::panicking::default_hook::{{closure}}::hc7dd9b0d16882bee
[INFO] [stderr]                                at src/libstd/panicking.rs:204
[INFO] [stderr]    9:     0x55cec2fe26a6 - std::panicking::default_hook::h36e2db9fb0f86871
[INFO] [stderr]                                at src/libstd/panicking.rs:224
[INFO] [stderr]   10:     0x55cec2fe2fc2 - std::panicking::rust_panic_with_hook::h68e7a51e63e4fdd1
[INFO] [stderr]                                at src/libstd/panicking.rs:470
[INFO] [stderr]   11:     0x55cec2f04e01 - std::panicking::begin_panic::h0b710ca3be329323
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libstd/panicking.rs:397
[INFO] [stderr]   12:     0x55cec2d73f2f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::hde368c96e9271720
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:73
[INFO] [stderr]   13:     0x55cec2d73f2f - core::ops::function::FnOnce::call_once::hb46511be2d022b1f
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libcore/ops/function.rs:232
[INFO] [stderr]   14:     0x55cec2d7f5eb - lazy_static::lazy::Lazy<T>::get::{{closure}}::hdd03d4bec303a695
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:28
[INFO] [stderr]   15:     0x55cec2d76312 - std::sync::once::Once::call_once::{{closure}}::h74f68d417d1a200e
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libstd/sync/once.rs:264
[INFO] [stderr]   16:     0x55cec2fdfb78 - std::sync::once::Once::call_inner::h48866c4c297e58ff
[INFO] [stderr]                                at src/libstd/sync/once.rs:416
[INFO] [stderr]   17:     0x55cec2d76293 - std::sync::once::Once::call_once::hd29ebf2829daa1f7
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libstd/sync/once.rs:264
[INFO] [stderr]   18:     0x55cec2d70895 - lazy_static::lazy::Lazy<T>::get::h81d7046e565ff4b4
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:27
[INFO] [stderr]   19:     0x55cec2d70895 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h30e96339a016754e
[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:     0x55cec2d70895 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h03053ad6457e6430
[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:     0x55cec2d6e2c4 - build_script_build::llvm_config::h195939c373a02746
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:167
[INFO] [stderr]   22:     0x55cec2d6f730 - build_script_build::get_llvm_cflags::h190d75af2ebc601d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:273
[INFO] [stderr]   23:     0x55cec2d6fb14 - build_script_build::main::h32dac7d093e27e01
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:300
[INFO] [stderr]   24:     0x55cec2d7f78b - std::rt::lang_start::{{closure}}::h10395807be3a9f72
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libstd/rt.rs:67
[INFO] [stderr]   25:     0x55cec2fe2a83 - std::rt::lang_start_internal::{{closure}}::h5734d12debc7ef02
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   26:     0x55cec2fe2a83 - std::panicking::try::do_call::ha59ccfbb0233cd67
[INFO] [stderr]                                at src/libstd/panicking.rs:303
[INFO] [stderr]   27:     0x55cec2feb457 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   28:     0x55cec2fe3469 - std::panicking::try::hb1f8b5942fedc28f
[INFO] [stderr]                                at src/libstd/panicking.rs:281
[INFO] [stderr]   29:     0x55cec2fe3469 - std::panic::catch_unwind::h3cfbd670c04cfa0a
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   30:     0x55cec2fe3469 - std::rt::lang_start_internal::h86b43da953c7be5a
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   31:     0x55cec2d7f767 - std::rt::lang_start::h14da3bd819103aed
[INFO] [stderr]                                at /rustc/212aa3ea28d91a97d1e1261709c0b6e6790788e6/src/libstd/rt.rs:67
[INFO] [stderr]   32:     0x55cec2d7092a - main
[INFO] [stderr]   33:     0x7fd3c1b64b97 - __libc_start_main
[INFO] [stderr]   34:     0x55cec2d6ce4a - _start
[INFO] [stderr]   35:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "1d135e434bb07cd9aaa77701b7b74d39a0e635206885c4b2914b416f1976224d"`
[INFO] running `"docker" "rm" "-f" "1d135e434bb07cd9aaa77701b7b74d39a0e635206885c4b2914b416f1976224d"`
[INFO] [stdout] 1d135e434bb07cd9aaa77701b7b74d39a0e635206885c4b2914b416f1976224d