[INFO] cloning repository https://github.com/blankoslo/led-vegg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blankoslo/led-vegg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblankoslo%2Fled-vegg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblankoslo%2Fled-vegg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0da83e20fd4b6f7220fc39c4afc589320cbd3ab9
[INFO] checking blankoslo/led-vegg against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblankoslo%2Fled-vegg" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blankoslo/led-vegg on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blankoslo/led-vegg
[INFO] finished tweaking git repo https://github.com/blankoslo/led-vegg
[INFO] tweaked toml for git repo https://github.com/blankoslo/led-vegg written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/blankoslo/led-vegg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--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 artnet_protocol v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c66b7fec75047c2f63aa2ba88c02c7b973e16d73e931ca7b7e8efe5b986c5c4
[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" "5c66b7fec75047c2f63aa2ba88c02c7b973e16d73e931ca7b7e8efe5b986c5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c66b7fec75047c2f63aa2ba88c02c7b973e16d73e931ca7b7e8efe5b986c5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c66b7fec75047c2f63aa2ba88c02c7b973e16d73e931ca7b7e8efe5b986c5c4", kill_on_drop: false }`
[INFO] [stdout] 5c66b7fec75047c2f63aa2ba88c02c7b973e16d73e931ca7b7e8efe5b986c5c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] f42fb1ea3cefbe554f9587511aca4d4405d4b8710953db8028d955ebfb9c3aa6
[INFO] running `Command { std: "docker" "start" "-a" "f42fb1ea3cefbe554f9587511aca4d4405d4b8710953db8028d955ebfb9c3aa6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking atom v0.3.5
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking inplace_it v0.3.2
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]     Checking libloading v0.6.3
[INFO] [stderr]     Checking tracing-core v0.1.16
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking ash v0.31.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking wgpu-types v0.6.1
[INFO] [stderr]     Checking artnet_protocol v0.2.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking gfx-hal v0.6.0
[INFO] [stderr]     Checking spirv_headers v1.5.0
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling shaderc-sys v0.6.2
[INFO] [stderr]     Checking gfx-backend-empty v0.6.0
[INFO] [stderr]     Checking gfx-memory v0.2.0
[INFO] [stderr]     Checking gfx-descriptor v0.2.0
[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-1.0.41/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=fb933a726776e17d -C extra-filename=-fb933a726776e17d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e3bb3e3bb63d7c79.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5e6829f352700ab4.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.rmeta --cap-lints allow --cap-lints=forbid` (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" "f42fb1ea3cefbe554f9587511aca4d4405d4b8710953db8028d955ebfb9c3aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42fb1ea3cefbe554f9587511aca4d4405d4b8710953db8028d955ebfb9c3aa6", kill_on_drop: false }`
[INFO] [stdout] f42fb1ea3cefbe554f9587511aca4d4405d4b8710953db8028d955ebfb9c3aa6