[INFO] cloning repository https://github.com/Rua/ferret
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rua/ferret" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRua%2Fferret", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRua%2Fferret'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc42b4c4a76fcdffbda18d611664770f0d9ea63c
[INFO] testing Rua/ferret against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRua%2Fferret" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rua/ferret on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rua/ferret
[INFO] finished tweaking git repo https://github.com/Rua/ferret
[INFO] tweaked toml for git repo https://github.com/Rua/ferret written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Rua/ferret already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] de1762d4f2de5c9da2c7ca52d98188c6436a5d12493daac295dbeb2761cd057e
[INFO] running `Command { std: "docker" "start" "-a" "de1762d4f2de5c9da2c7ca52d98188c6436a5d12493daac295dbeb2761cd057e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de1762d4f2de5c9da2c7ca52d98188c6436a5d12493daac295dbeb2761cd057e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de1762d4f2de5c9da2c7ca52d98188c6436a5d12493daac295dbeb2761cd057e", kill_on_drop: false }`
[INFO] [stdout] de1762d4f2de5c9da2c7ca52d98188c6436a5d12493daac295dbeb2761cd057e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c6f163be252c776b2571529cd38df2c79908d3e3ede3539eea15daa83a8654b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5c6f163be252c776b2571529cd38df2c79908d3e3ede3539eea15daa83a8654b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling vulkano v0.19.0 (https://github.com/vulkano-rs/vulkano#aa1f402c)
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling cpal v0.12.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vk-sys v0.5.2 (https://github.com/vulkano-rs/vulkano#aa1f402c)
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling paste v1.0.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling shrev v1.1.1
[INFO] [stderr]    Compiling relative-path v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling instant v0.1.7
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling matrixmultiply v0.2.3
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling alsa-sys v0.3.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling shaderc-sys v0.6.2
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling net2 v0.2.35
[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 opt-level=1 -C embed-bitcode=no -C debuginfo=2 -C debug-assertions=on --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=d2ea0ba7468adda9 -C extra-filename=-d2ea0ba7468adda9 --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] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5c6f163be252c776b2571529cd38df2c79908d3e3ede3539eea15daa83a8654b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6f163be252c776b2571529cd38df2c79908d3e3ede3539eea15daa83a8654b", kill_on_drop: false }`
[INFO] [stdout] 5c6f163be252c776b2571529cd38df2c79908d3e3ede3539eea15daa83a8654b
