[INFO] cloning repository https://github.com/slightknack/sileno
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slightknack/sileno" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fsileno", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fsileno'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73c3b21ef5c5f9b00b35f883e8d3a4d2dbb65ab5
[INFO] testing slightknack/sileno against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fsileno" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slightknack/sileno on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/slightknack/sileno
[INFO] finished tweaking git repo https://github.com/slightknack/sileno
[INFO] tweaked toml for git repo https://github.com/slightknack/sileno written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/slightknack/sileno already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4984b7354a8acfad28d313c62b4e95cdccc6d70acd3d78384f53bb037b733e3b
[INFO] running `Command { std: "docker" "start" "-a" "4984b7354a8acfad28d313c62b4e95cdccc6d70acd3d78384f53bb037b733e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4984b7354a8acfad28d313c62b4e95cdccc6d70acd3d78384f53bb037b733e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4984b7354a8acfad28d313c62b4e95cdccc6d70acd3d78384f53bb037b733e3b", kill_on_drop: false }`
[INFO] [stdout] 4984b7354a8acfad28d313c62b4e95cdccc6d70acd3d78384f53bb037b733e3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b994820043abd1dcbb98519688443a8b281ed7617f100df2da2f9bb3f1d39e1
[INFO] running `Command { std: "docker" "start" "-a" "1b994820043abd1dcbb98519688443a8b281ed7617f100df2da2f9bb3f1d39e1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling ttf-parser v0.9.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling radium v0.4.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling inplace_it v0.3.2
[INFO] [stderr]    Compiling iced_core v0.3.0
[INFO] [stderr]    Compiling xi-unicode v0.3.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling zeroize v1.2.0
[INFO] [stderr]    Compiling const-oid v0.4.1
[INFO] [stderr]    Compiling winit v0.23.0
[INFO] [stderr]    Compiling svg_fmt v0.4.1
[INFO] [stderr]    Compiling cpuid-bool v0.2.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling libloading v0.6.6
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling wayland-sys v0.28.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling glam v0.10.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling wgpu-types v0.6.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling spirv_headers v1.5.0
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling ordered-float v2.0.1
[INFO] [stderr]    Compiling euclid v0.22.1
[INFO] [stderr]    Compiling rmp v0.8.9
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling rusttype v0.9.2
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling ash v0.31.0
[INFO] [stderr]    Compiling der v0.1.0
[INFO] [stderr]    Compiling iced_style v0.2.0
[INFO] [stderr]    Compiling wayland-scanner v0.28.2
[INFO] [stderr]    Compiling andrew v0.3.1
[INFO] [stderr]    Compiling pkcs8 v0.3.3
[INFO] [stderr]    Compiling owned_ttf_parser v0.9.0
[INFO] [stderr]    Compiling bitvec v0.18.4
[INFO] [stderr]    Compiling ab_glyph v0.2.7
[INFO] [stderr]    Compiling glyph_brush_layout v0.2.1
[INFO] [stderr]    Compiling guillotiere v0.6.0
[INFO] [stderr]    Compiling wayland-client v0.28.2
[INFO] [stderr]    Compiling wayland-protocols v0.28.2
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling crypto-mac v0.10.0
[INFO] [stderr]    Compiling cipher v0.2.5
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling gfx-hal v0.6.0
[INFO] [stderr]    Compiling poly1305 v0.6.2
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling sha2 v0.9.2
[INFO] [stderr]    Compiling chacha20 v0.6.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling chacha20poly1305 v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling xcursor v0.3.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling ff v0.8.0
[INFO] [stderr]    Compiling hkdf v0.10.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling group v0.8.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling elliptic-curve v0.8.4
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling k256 v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling twox-hash v1.6.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.55/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=4b56a0c581febdbb -C extra-filename=-4b56a0c581febdbb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e745718ee331648c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cd7216afd0a4191b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-a00294059a9d31c4.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1b994820043abd1dcbb98519688443a8b281ed7617f100df2da2f9bb3f1d39e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b994820043abd1dcbb98519688443a8b281ed7617f100df2da2f9bb3f1d39e1", kill_on_drop: false }`
[INFO] [stdout] 1b994820043abd1dcbb98519688443a8b281ed7617f100df2da2f9bb3f1d39e1