[INFO] crate qrep 0.1.0 is already in cache
[INFO] extracting crate qrep 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/qrep/0.1.0
[INFO] extracting crate qrep 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/qrep/0.1.0
[INFO] validating manifest of qrep-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of qrep-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing qrep-0.1.0
[INFO] finished frobbing qrep-0.1.0
[INFO] frobbed toml for qrep-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/qrep/0.1.0/Cargo.toml
[INFO] started frobbing qrep-0.1.0
[INFO] finished frobbing qrep-0.1.0
[INFO] frobbed toml for qrep-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/qrep/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing qrep-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/qrep/0.1.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 1d8ba1f3f988da452f6ef749ee98cbc02bd30f3cf8cabe8450ecd867b90421fc
[INFO] running `"docker" "start" "-a" "1d8ba1f3f988da452f6ef749ee98cbc02bd30f3cf8cabe8450ecd867b90421fc"`
[INFO] [stderr]    Compiling bytecount v0.5.1
[INFO] [stderr]    Compiling spmc v0.2.2
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling grep-matcher v0.1.3
[INFO] [stderr]    Compiling encoding_rs_io v0.1.6
[INFO] [stderr]    Compiling serde-xml-rs v0.2.1
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling grep-regex v0.1.4
[INFO] [stderr]    Compiling grep-searcher v0.1.5
[INFO] [stderr]    Compiling rust_qt_binding_generator v0.2.2
[INFO] [stderr]    Compiling qrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `qrep v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/qrep-4554f2f92256e7b3/build-script-build` (exit code: 255)
[INFO] [stderr] --- stderr
[INFO] [stderr] running: "qmake" "-query" "QT_VERSION"
[INFO] [stderr] qmake: could not find a Qt installation of ''
[INFO] [stderr] qmake exited with status code: 1
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "1d8ba1f3f988da452f6ef749ee98cbc02bd30f3cf8cabe8450ecd867b90421fc"`
[INFO] running `"docker" "rm" "-f" "1d8ba1f3f988da452f6ef749ee98cbc02bd30f3cf8cabe8450ecd867b90421fc"`
[INFO] [stdout] 1d8ba1f3f988da452f6ef749ee98cbc02bd30f3cf8cabe8450ecd867b90421fc