[INFO] updating cached repository https://github.com/ubsan/newt
[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] 8a11c9db4200da624a563286ac8040a59ceffece
[INFO] checking ubsan/newt against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fubsan%2Fnewt" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ubsan/newt on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ubsan/newt
[INFO] finished tweaking git repo https://github.com/ubsan/newt
[INFO] tweaked toml for git repo https://github.com/ubsan/newt written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ubsan/newt already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ddbd73d829487660c525ce3bd37ceb9eb0e2c67f0a1bf3a7c5c469d5612a16a6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ddbd73d829487660c525ce3bd37ceb9eb0e2c67f0a1bf3a7c5c469d5612a16a6"`
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.6.7
[INFO] [stderr]    Compiling llvm-sys v70.0.0
[INFO] [stderr] error: failed to run custom build command for `llvm-sys v70.0.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/llvm-sys-a4518bb4367398c6/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-70.0.0/build.rs:73:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55611ab2b174 - backtrace::backtrace::libunwind::trace::hc26826043b7bf82f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55611ab2b174 - backtrace::backtrace::trace_unsynchronized::hf9fe7343abcf3b6a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55611ab2b174 - std::sys_common::backtrace::_print_fmt::hf5f83f377bc8d868
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x55611ab2b174 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb2a7a6aa1b182a99
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55611ab49abc - core::fmt::write::hc09f142ab04e56d2
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1057
[INFO] [stderr]    5:     0x55611ab27507 - std::io::Write::write_fmt::hafa429c292548705
[INFO] [stderr]                                at src/libstd/io/mod.rs:1426
[INFO] [stderr]    6:     0x55611ab2d455 - std::sys_common::backtrace::_print::hcf3fff603fe810fd
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55611ab2d455 - std::sys_common::backtrace::print::h5ea515a32d6700a5
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55611ab2d455 - std::panicking::default_hook::{{closure}}::h324ce5172a1777e2
[INFO] [stderr]                                at src/libstd/panicking.rs:204
[INFO] [stderr]    9:     0x55611ab2d141 - std::panicking::default_hook::h6593dbc4932c953a
[INFO] [stderr]                                at src/libstd/panicking.rs:224
[INFO] [stderr]   10:     0x55611ab2daba - std::panicking::rust_panic_with_hook::h04729d51ab5f86cb
[INFO] [stderr]                                at src/libstd/panicking.rs:472
[INFO] [stderr]   11:     0x55611ab14ad7 - std::panicking::begin_panic::hd45f978a4036a9e6
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/panicking.rs:399
[INFO] [stderr]   12:     0x55611a8ffcc6 - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__static_ref_initialize::he30b03807eb6cfe8
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.0.0/build.rs:73
[INFO] [stderr]   13:     0x55611a8ffcc6 - core::ops::function::FnOnce::call_once::he411c2c31e680fe1
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libcore/ops/function.rs:232
[INFO] [stderr]   14:     0x55611a8fec23 - lazy_static::lazy::Lazy<T>::get::{{closure}}::hc2bf541d45b723e0
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/inline_lazy.rs:28
[INFO] [stderr]   15:     0x55611a904595 - std::sync::once::Once::call_once::{{closure}}::hfcac37ccaae1932a
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/sync/once.rs:264
[INFO] [stderr]   16:     0x55611ab2ac71 - std::sync::once::Once::call_inner::h2159e724e039370b
[INFO] [stderr]                                at src/libstd/sync/once.rs:417
[INFO] [stderr]   17:     0x55611a904473 - std::sync::once::Once::call_once::hc8ea8547488053ee
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/sync/once.rs:264
[INFO] [stderr]   18:     0x55611a8fb88f - lazy_static::lazy::Lazy<T>::get::h14e5979d4838c0df
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/inline_lazy.rs:27
[INFO] [stderr]   19:     0x55611a8fb88f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::__stability::h35882e17a0372d72
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.0.0/<::lazy_static::__lazy_static_internal macros>:19
[INFO] [stderr]   20:     0x55611a8fb88f - <build_script_build::LLVM_CONFIG_PATH as core::ops::deref::Deref>::deref::h61f38eb9630512bd
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.0.0/<::lazy_static::__lazy_static_internal macros>:21
[INFO] [stderr]   21:     0x55611a8f92ba - build_script_build::llvm_config::h8c667bd385f5404f
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.0.0/build.rs:167
[INFO] [stderr]   22:     0x55611a8fab53 - build_script_build::main::hca7c9aee17882c25
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-70.0.0/build.rs:300
[INFO] [stderr]   23:     0x55611a8fdf20 - std::rt::lang_start::{{closure}}::h83b4cf3834d447ea
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   24:     0x55611ab2d583 - std::rt::lang_start_internal::{{closure}}::h5c17144678350141
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   25:     0x55611ab2d583 - std::panicking::try::do_call::h8eaf10466ef75c80
[INFO] [stderr]                                at src/libstd/panicking.rs:305
[INFO] [stderr]   26:     0x55611ab35c57 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   27:     0x55611ab2df60 - std::panicking::try::hbd218b3dcbe12757
[INFO] [stderr]                                at src/libstd/panicking.rs:281
[INFO] [stderr]   28:     0x55611ab2df60 - std::panic::catch_unwind::h0175a6dbda08cacb
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   29:     0x55611ab2df60 - std::rt::lang_start_internal::h09fd43f7d6ed11c7
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   30:     0x55611a8fdef9 - std::rt::lang_start::h04e3e9480afeaf0d
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   31:     0x55611a8fb90a - main
[INFO] [stderr]   32:     0x7f33c7635b97 - __libc_start_main
[INFO] [stderr]   33:     0x55611a8f7dca - _start
[INFO] [stderr]   34:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "ddbd73d829487660c525ce3bd37ceb9eb0e2c67f0a1bf3a7c5c469d5612a16a6"`
[INFO] running `"docker" "rm" "-f" "ddbd73d829487660c525ce3bd37ceb9eb0e2c67f0a1bf3a7c5c469d5612a16a6"`
[INFO] [stdout] ddbd73d829487660c525ce3bd37ceb9eb0e2c67f0a1bf3a7c5c469d5612a16a6