[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#e2223c94bf433fc38234d1303e88cbaf14755863 for pr-69548
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffexolm%2Fjfec" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fexolm/jfec on toolchain e2223c94bf433fc38234d1303e88cbaf14755863
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e2223c94bf433fc38234d1303e88cbaf14755863" "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-5/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" "+e2223c94bf433fc38234d1303e88cbaf14755863" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+e2223c94bf433fc38234d1303e88cbaf14755863" "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] 27b0b0ee9b769c254de684a9b693b1bafe26451747fc1e0701dd0d01dd08ea44
[INFO] running `"docker" "start" "-a" "27b0b0ee9b769c254de684a9b693b1bafe26451747fc1e0701dd0d01dd08ea44"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking cast v0.1.0
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking simplelog v0.4.4
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]     Checking criterion-stats v0.1.3
[INFO] [stderr]     Checking criterion-plot v0.1.3
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling failure_derive v0.1.5
[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-762b888216e16fa7/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:     0x559ee236eec4 - backtrace::backtrace::libunwind::trace::h4ca49152e1f35005
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x559ee236eec4 - backtrace::backtrace::trace_unsynchronized::hc386219a292e35b7
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x559ee236eec4 - std::sys_common::backtrace::_print_fmt::hcc8e03acf0b4e191
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x559ee236eec4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6629260593428da6
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x559ee238fc1c - core::fmt::write::h33778cb9fc069ee9
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1053
[INFO] [stderr]    5:     0x559ee236b067 - std::io::Write::write_fmt::ha24c398f7cbcf857
[INFO] [stderr]                                at src/libstd/io/mod.rs:1428
[INFO] [stderr]    6:     0x559ee2371745 - std::sys_common::backtrace::_print::hc879c3241333a43c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x559ee2371745 - std::sys_common::backtrace::print::h20817dd43023ddb9
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x559ee2371745 - std::panicking::default_hook::{{closure}}::h99b6ca83277c224a
[INFO] [stderr]                                at src/libstd/panicking.rs:204
[INFO] [stderr]    9:     0x559ee2371487 - std::panicking::default_hook::hdf495aaeed5140cc
[INFO] [stderr]                                at src/libstd/panicking.rs:224
[INFO] [stderr]   10:     0x559ee2371da2 - std::panicking::rust_panic_with_hook::h455d273bc59e23f1
[INFO] [stderr]                                at src/libstd/panicking.rs:470
[INFO] [stderr]   11:     0x559ee232e471 - std::panicking::begin_panic::h417b437b1e7d9b5b
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libstd/panicking.rs:397
[INFO] [stderr]   12:     0x559ee211355f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::h02a816d0c7ebeb51
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:73
[INFO] [stderr]   13:     0x559ee211355f - core::ops::function::FnOnce::call_once::hdc2993baf161c541
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libcore/ops/function.rs:232
[INFO] [stderr]   14:     0x559ee211e08b - lazy_static::lazy::Lazy<T>::get::{{closure}}::h6e9124392b948b62
[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:     0x559ee2114882 - std::sync::once::Once::call_once::{{closure}}::h0bccad0ea7869c02
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libstd/sync/once.rs:264
[INFO] [stderr]   16:     0x559ee236e998 - std::sync::once::Once::call_inner::hc32311a26fc9e7a7
[INFO] [stderr]                                at src/libstd/sync/once.rs:416
[INFO] [stderr]   17:     0x559ee2114613 - std::sync::once::Once::call_once::h3808233b6d759814
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libstd/sync/once.rs:264
[INFO] [stderr]   18:     0x559ee210fea5 - lazy_static::lazy::Lazy<T>::get::h9ecb3984117632be
[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:     0x559ee210fea5 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h812e144c173e66b5
[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:     0x559ee210fea5 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h6372e41e43a53d01
[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:     0x559ee210da14 - build_script_build::llvm_config::h67163bc4d0e7721b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:167
[INFO] [stderr]   22:     0x559ee210ed40 - build_script_build::get_llvm_cflags::he5e31df65ac179dd
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:273
[INFO] [stderr]   23:     0x559ee210f124 - build_script_build::main::hbb2c3830db3f7bc7
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.1.0/build.rs:300
[INFO] [stderr]   24:     0x559ee21124fb - std::rt::lang_start::{{closure}}::h7d5171fef51f0303
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libstd/rt.rs:67
[INFO] [stderr]   25:     0x559ee2371863 - std::rt::lang_start_internal::{{closure}}::hb57f5e2d13eee8db
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   26:     0x559ee2371863 - std::panicking::try::do_call::h204ea578757a6ffa
[INFO] [stderr]                                at src/libstd/panicking.rs:303
[INFO] [stderr]   27:     0x559ee237a337 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   28:     0x559ee2372249 - std::panicking::try::hbdab64151e1c9d96
[INFO] [stderr]                                at src/libstd/panicking.rs:281
[INFO] [stderr]   29:     0x559ee2372249 - std::panic::catch_unwind::h354b07ea6be5bfc8
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   30:     0x559ee2372249 - std::rt::lang_start_internal::h50f05845fa10b1fa
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   31:     0x559ee21124d7 - std::rt::lang_start::he82fd8156b292573
[INFO] [stderr]                                at /rustc/e2223c94bf433fc38234d1303e88cbaf14755863/src/libstd/rt.rs:67
[INFO] [stderr]   32:     0x559ee210ff3a - main
[INFO] [stderr]   33:     0x7f56fc219b97 - __libc_start_main
[INFO] [stderr]   34:     0x559ee210c5ca - _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" "27b0b0ee9b769c254de684a9b693b1bafe26451747fc1e0701dd0d01dd08ea44"`
[INFO] running `"docker" "rm" "-f" "27b0b0ee9b769c254de684a9b693b1bafe26451747fc1e0701dd0d01dd08ea44"`
[INFO] [stdout] 27b0b0ee9b769c254de684a9b693b1bafe26451747fc1e0701dd0d01dd08ea44