[INFO] fetching crate sixtyfps-rendering-backend-qt 0.1.2...
[INFO] testing sixtyfps-rendering-backend-qt-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sixtyfps-rendering-backend-qt 0.1.2 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate sixtyfps-rendering-backend-qt 0.1.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sixtyfps-rendering-backend-qt 0.1.2
[INFO] finished tweaking crates.io crate sixtyfps-rendering-backend-qt 0.1.2
[INFO] tweaked toml for crates.io crate sixtyfps-rendering-backend-qt 0.1.2 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded field-offset v0.3.4
[INFO] [stderr]   Downloaded lyon_algorithms v0.17.5
[INFO] [stderr]   Downloaded triomphe v0.1.3
[INFO] [stderr]   Downloaded auto_enums v0.7.12
[INFO] [stderr]   Downloaded auto_enums_core v0.7.12
[INFO] [stderr]   Downloaded cpp v0.5.6
[INFO] [stderr]   Downloaded if_rust_version v1.0.0
[INFO] [stderr]   Downloaded qttypes v0.2.3
[INFO] [stderr]   Downloaded sid v0.6.1
[INFO] [stderr]   Downloaded lyon_geom v0.17.5
[INFO] [stderr]   Downloaded lyon_path v0.17.6
[INFO] [stderr]   Downloaded sixtyfps-corelib v0.1.2
[INFO] [stderr]   Downloaded pin-weak v1.0.0
[INFO] [stderr]   Downloaded sixtyfps-corelib-macros v0.1.2
[INFO] [stderr]   Downloaded const-field-offset-macro v0.1.1
[INFO] [stderr]   Downloaded vtable v0.1.3
[INFO] [stderr]   Downloaded weak-table v0.3.0
[INFO] [stderr]   Downloaded const-field-offset v0.1.1
[INFO] [stderr]   Downloaded vtable-macro v0.1.3
[INFO] [stderr]   Downloaded cpp_macros v0.5.6
[INFO] [stderr]   Downloaded cpp_common v0.5.6
[INFO] [stderr]   Downloaded cpp_build v0.5.6
[INFO] [stderr]   Downloaded derive_utils v0.11.2
[INFO] [stderr]   Downloaded auto_enums_derive v0.7.12
[INFO] [stderr]   Downloaded euclid v0.22.6
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d40cf2de51c5fcda45d0a2cb0a125e561671d88213b89e660c2eeefd15efddf
[INFO] running `Command { std: "docker" "start" "-a" "7d40cf2de51c5fcda45d0a2cb0a125e561671d88213b89e660c2eeefd15efddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d40cf2de51c5fcda45d0a2cb0a125e561671d88213b89e660c2eeefd15efddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d40cf2de51c5fcda45d0a2cb0a125e561671d88213b89e660c2eeefd15efddf", kill_on_drop: false }`
[INFO] [stdout] 7d40cf2de51c5fcda45d0a2cb0a125e561671d88213b89e660c2eeefd15efddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19e23c4c1a781f17013ef68a7aff3b3b976e9af35e6d8b5610ac826e9d2e1f5e
[INFO] running `Command { std: "docker" "start" "-a" "19e23c4c1a781f17013ef68a7aff3b3b976e9af35e6d8b5610ac826e9d2e1f5e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling if_rust_version v1.0.0
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling weak-table v0.3.0
[INFO] [stderr]    Compiling scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling pin-weak v1.0.0
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling rgb v0.8.27
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling auto_enums_derive v0.7.12
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling cpp_common v0.5.6
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling triomphe v0.1.3
[INFO] [stderr]    Compiling field-offset v0.3.4
[INFO] [stderr]    Compiling pathfinder_simd v0.5.1
[INFO] [stderr]    Compiling euclid v0.22.6
[INFO] [stderr]    Compiling sid v0.6.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling const-field-offset-macro v0.1.1
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling vtable-macro v0.1.3
[INFO] [stderr]    Compiling sixtyfps-corelib-macros v0.1.2
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling cpp_macros v0.5.6
[INFO] [stderr]    Compiling lyon_geom v0.17.5
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling cpp_build v0.5.6
[INFO] [stderr] error: could not compile `regex`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-1.5.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="aho-corasick"' --cfg 'feature="default"' --cfg 'feature="memchr"' --cfg 'feature="perf"' --cfg 'feature="perf-cache"' --cfg 'feature="perf-dfa"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="std"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=27bd9e77ed307a48 -C extra-filename=-27bd9e77ed307a48 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-4c39e51ac9fce8dc.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-0f592fda00c64810.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-b77be10fdde4f88a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "19e23c4c1a781f17013ef68a7aff3b3b976e9af35e6d8b5610ac826e9d2e1f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19e23c4c1a781f17013ef68a7aff3b3b976e9af35e6d8b5610ac826e9d2e1f5e", kill_on_drop: false }`
[INFO] [stdout] 19e23c4c1a781f17013ef68a7aff3b3b976e9af35e6d8b5610ac826e9d2e1f5e