[INFO] fetching crate scribble 0.1.0...
[INFO] testing scribble-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate scribble 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate scribble 0.1.0 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 scribble 0.1.0
[INFO] finished tweaking crates.io crate scribble 0.1.0
[INFO] tweaked toml for crates.io crate scribble 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate scribble 0.1.0 already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 8122b270e56c777883894c52b6c7dd0d0e2cf7819dd47dc28f8bdb5c3ab765d3
[INFO] running `Command { std: "docker" "start" "-a" "8122b270e56c777883894c52b6c7dd0d0e2cf7819dd47dc28f8bdb5c3ab765d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8122b270e56c777883894c52b6c7dd0d0e2cf7819dd47dc28f8bdb5c3ab765d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8122b270e56c777883894c52b6c7dd0d0e2cf7819dd47dc28f8bdb5c3ab765d3", kill_on_drop: false }`
[INFO] [stdout] 8122b270e56c777883894c52b6c7dd0d0e2cf7819dd47dc28f8bdb5c3ab765d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 0b19ac88dea745bb7fcd5eba917372053d1d87beede7f907c28c9b6fa5698912
[INFO] running `Command { std: "docker" "start" "-a" "0b19ac88dea745bb7fcd5eba917372053d1d87beede7f907c28c9b6fa5698912", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling cairo-rs v0.8.1
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling tinystr v0.3.2
[INFO] [stderr]    Compiling standback v0.2.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling gio v0.8.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling pango v0.8.0
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling gstreamer v0.15.6
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling gdk-pixbuf v0.8.0
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling atk v0.8.0
[INFO] [stderr]    Compiling muldiv v0.2.1
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling gdk v0.12.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling gtk v0.8.1
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling gstreamer-base v0.15.4
[INFO] [stderr]    Compiling xi-unicode v0.2.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling fluent-syntax v0.9.3
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling instant v0.1.4
[INFO] [stderr]    Compiling strength_reduce v0.2.3
[INFO] [stderr]    Compiling gstreamer-video v0.15.6
[INFO] [stderr]    Compiling gstreamer-audio v0.15.5
[INFO] [stderr]    Compiling gstreamer-app v0.15.6
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling transpose v0.1.0
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling apodize v1.0.0
[INFO] [stderr]    Compiling array-init v0.1.1
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling lufs v0.1.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling unic-langid-impl v0.9.0
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling kurbo v0.6.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling unic-langid v0.9.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling glib-sys v0.9.1
[INFO] [stderr]    Compiling gobject-sys v0.9.1
[INFO] [stderr]    Compiling gstreamer-sys v0.8.1
[INFO] [stderr]    Compiling gio-sys v0.9.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.9.2
[INFO] [stderr]    Compiling gstreamer-base-sys v0.8.1
[INFO] [stderr]    Compiling pango-sys v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.9.1
[INFO] [stderr]    Compiling atk-sys v0.9.1
[INFO] [stderr]    Compiling gdk-sys v0.9.1
[INFO] [stderr]    Compiling gtk-sys v0.9.2
[INFO] [stderr]    Compiling gstreamer-audio-sys v0.8.1
[INFO] [stderr]    Compiling gstreamer-video-sys v0.8.1
[INFO] [stderr]    Compiling gstreamer-app-sys v0.8.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling simple_logger v1.6.0
[INFO] [stderr]    Compiling piet v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling intl_pluralrules v7.0.0
[INFO] [stderr]    Compiling fluent-langneg v0.13.0
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling pkg-version-impl v0.1.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.18/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="default"' --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=8d133295d5bc9215 -C extra-filename=-8d133295d5bc9215 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "0b19ac88dea745bb7fcd5eba917372053d1d87beede7f907c28c9b6fa5698912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b19ac88dea745bb7fcd5eba917372053d1d87beede7f907c28c9b6fa5698912", kill_on_drop: false }`
[INFO] [stdout] 0b19ac88dea745bb7fcd5eba917372053d1d87beede7f907c28c9b6fa5698912