[INFO] fetching crate citrus 0.8.0...
[INFO] extracting crate citrus 0.8.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/citrus/0.8.0
[INFO] extracting crate citrus 0.8.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/citrus/0.8.0
[INFO] validating manifest of citrus-0.8.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of citrus-0.8.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing citrus-0.8.0
[INFO] finished frobbing citrus-0.8.0
[INFO] frobbed toml for citrus-0.8.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/citrus/0.8.0/Cargo.toml
[INFO] started frobbing citrus-0.8.0
[INFO] finished frobbing citrus-0.8.0
[INFO] frobbed toml for citrus-0.8.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/citrus/0.8.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c3 v0.9.0
[INFO] [stderr]   Downloaded c3_clang_extensions v0.3.7
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking citrus-0.8.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/citrus/0.8.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 73c6cd37a21c151ba951270328cdda4ac24b78a0a9d736a0573f6b388361074c
[INFO] running `"docker" "start" "-a" "73c6cd37a21c151ba951270328cdda4ac24b78a0a9d736a0573f6b388361074c"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling dunce v0.1.1
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking file v1.1.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling clang-sys v0.20.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling clang-sys v0.19.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr] error: failed to run custom build command for `clang-sys v0.20.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/clang-sys-61b915405149bb87/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "couldn\'t find any of [\'libclang.a\'], set the LIBCLANG_STATIC_PATH environment variable to a path where one of these files can be found (skipped: [])"', src/libcore/result.rs:999:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x557644bed58b - backtrace::backtrace::libunwind::trace::h8758853b907b30fd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x557644bed58b - backtrace::backtrace::trace_unsynchronized::h979d07d4bfdce29c
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x557644bed58b - std::sys_common::backtrace::_print::ha749bbdb811617ea
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x557644bed58b - std::sys_common::backtrace::print::h86a6ff63a904e869
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x557644bed58b - std::panicking::default_hook::{{closure}}::h68500b20afb715b9
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x557644bed267 - std::panicking::default_hook::ha801ade4ae33c264
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x557644bedc50 - std::panicking::rust_panic_with_hook::hfb51b615c6060100
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x557644bed7d2 - std::panicking::continue_panic_fmt::h94bd84d5bf32c833
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x557644bed6b6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x557644c0825d - core::panicking::panic_fmt::h8a74e5820cacd07c
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x557644bab023 - core::result::unwrap_failed::hbf011da70cd1613b
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x557644bacb9c - core::result::Result<T,E>::unwrap::h39a7edfc57b4f104
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x557644b8e356 - build_script_build::link_static::hbd96f6fb9f1f146b
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/clang-sys-0.20.1/build.rs:310
[INFO] [stderr]   13:     0x557644b8fb15 - build_script_build::main::h87544e4ddaa12da7
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/clang-sys-0.20.1/build.rs:385
[INFO] [stderr]   14:     0x557644b83f00 - std::rt::lang_start::{{closure}}::he603e15e583f1253
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   15:     0x557644bed6a3 - std::rt::lang_start_internal::{{closure}}::h25858f7dd6124e1a
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   16:     0x557644bed6a3 - std::panicking::try::do_call::h51cc84caa9338daf
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   17:     0x557644bf4f3a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   18:     0x557644bee15d - std::panicking::try::heb9d5da34e3fa707
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   19:     0x557644bee15d - std::panic::catch_unwind::he2a2041733180f4c
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   20:     0x557644bee15d - std::rt::lang_start_internal::h9e24cef029766dfd
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   21:     0x557644b83ed9 - std::rt::lang_start::h140d0e5887605fe9
[INFO] [stderr]                                at /rustc/8f81d0bf6baf07b92f1246696722485c4ca0b049/src/libstd/rt.rs:64
[INFO] [stderr]   22:     0x557644b8fe2a - main
[INFO] [stderr]   23:     0x7f55c58fa2e1 - __libc_start_main
[INFO] [stderr]   24:     0x557644b83d6a - _start
[INFO] [stderr]   25:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "73c6cd37a21c151ba951270328cdda4ac24b78a0a9d736a0573f6b388361074c"`
[INFO] running `"docker" "rm" "-f" "73c6cd37a21c151ba951270328cdda4ac24b78a0a9d736a0573f6b388361074c"`
[INFO] [stdout] 73c6cd37a21c151ba951270328cdda4ac24b78a0a9d736a0573f6b388361074c