[INFO] crate rute 0.0.6 is already in cache
[INFO] extracting crate rute 0.0.6 into work/ex/beta-1.38-1/sources/1.37.0/reg/rute/0.0.6
[INFO] extracting crate rute 0.0.6 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rute/0.0.6
[INFO] validating manifest of rute-0.0.6 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rute-0.0.6 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rute-0.0.6
[INFO] finished frobbing rute-0.0.6
[INFO] frobbed toml for rute-0.0.6 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rute/0.0.6/Cargo.toml
[INFO] started frobbing rute-0.0.6
[INFO] finished frobbing rute-0.0.6
[INFO] frobbed toml for rute-0.0.6 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rute/0.0.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rute-0.0.6 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rute/0.0.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] de0c33c0603a6439f318c3eb4d46733ec8ece4cf0b0a243d60c7b1ab612265b2
[INFO] running `"docker" "start" "-a" "de0c33c0603a6439f318c3eb4d46733ec8ece4cf0b0a243d60c7b1ab612265b2"`
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling rayon v1.1.0
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rute v0.0.6 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `rute v0.0.6 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/rute-5cd7e53bc33d17c9/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at '
[INFO] [stderr] 
[INFO] [stderr] Unable to find QT5 environment variable. This needs to be set in order to use Rute.
[INFO] [stderr] You can download Qt from https://www.qt.io and the set the variable. Examples:
[INFO] [stderr] macOS: export QT5=/Users/USER_NAME/Qt/5.11.2/clang_64
[INFO] [stderr] 
[INFO] [stderr] GNU/Linux: export QT5=/opt/qt510
[INFO] [stderr] 
[INFO] [stderr] ', build.rs:20:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x561e03372fab - backtrace::backtrace::libunwind::trace::h23ae608c8b906c69
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x561e03372fab - backtrace::backtrace::trace_unsynchronized::h65b3ea295a85fd48
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x561e03372fab - std::sys_common::backtrace::_print::h24f527b44b6cfc06
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x561e03372fab - std::sys_common::backtrace::print::h712608e4347fd64a
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x561e03372fab - std::panicking::default_hook::{{closure}}::h6c3d570c2b500048
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x561e03372c86 - std::panicking::default_hook::hb29963fb4747e0dd
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x561e0337371d - std::panicking::rust_panic_with_hook::hd1236c3083de823a
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x561e0334c6d5 - std::panicking::begin_panic::hc14cdfbec6b32229
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x561e03272740 - build_script_build::main::{{closure}}::h94a3c5e51fb20e02
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:20
[INFO] [stderr]    9:     0x561e03273120 - core::result::Result<T,E>::unwrap_or_else::h36eee4986d660581
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/result.rs:818
[INFO] [stderr]   10:     0x561e03270c26 - build_script_build::main::hd898dd70da4fc087
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:19
[INFO] [stderr]   11:     0x561e03272da0 - std::rt::lang_start::{{closure}}::h7e9c9d3a04fc6a70
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x561e03373123 - std::rt::lang_start_internal::{{closure}}::hf367a5a6ae52b0ce
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   13:     0x561e03373123 - std::panicking::try::do_call::h9d779bc5e27e3284
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   14:     0x561e0337b67a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   15:     0x561e03373ced - std::panicking::try::h4af22d9cb0afa351
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   16:     0x561e03373ced - std::panic::catch_unwind::hbb68a9ada87bfb97
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   17:     0x561e03373ced - std::rt::lang_start_internal::hba9e09d74440ce4d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   18:     0x561e03272d79 - std::rt::lang_start::hba8eccc2deab891e
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64
[INFO] [stderr]   19:     0x561e0327279a - main
[INFO] [stderr]   20:     0x7f7c518f82e1 - __libc_start_main
[INFO] [stderr]   21:     0x561e0327098a - _start
[INFO] [stderr]   22:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "de0c33c0603a6439f318c3eb4d46733ec8ece4cf0b0a243d60c7b1ab612265b2"`
[INFO] running `"docker" "rm" "-f" "de0c33c0603a6439f318c3eb4d46733ec8ece4cf0b0a243d60c7b1ab612265b2"`
[INFO] [stdout] de0c33c0603a6439f318c3eb4d46733ec8ece4cf0b0a243d60c7b1ab612265b2