[INFO] fetching crate webrender 0.61.0...
[INFO] checking webrender-0.61.0 against beta for pr-78714
[INFO] extracting crate webrender 0.61.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate webrender 0.61.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webrender 0.61.0
[INFO] finished tweaking crates.io crate webrender 0.61.0
[INFO] tweaked toml for crates.io crate webrender 0.61.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "+beta" "fetch" "--locked" "--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-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6afef709c82f0fc64794f53da69b6e190cfa7b385cb51ad00a60908bece58904
[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" "6afef709c82f0fc64794f53da69b6e190cfa7b385cb51ad00a60908bece58904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6afef709c82f0fc64794f53da69b6e190cfa7b385cb51ad00a60908bece58904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6afef709c82f0fc64794f53da69b6e190cfa7b385cb51ad00a60908bece58904", kill_on_drop: false }`
[INFO] [stdout] 6afef709c82f0fc64794f53da69b6e190cfa7b385cb51ad00a60908bece58904
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fffa7ce38adfa14a2e51d5338aeea2afc819813f1ed0341f9b8190efff631fe
[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" "4fffa7ce38adfa14a2e51d5338aeea2afc819813f1ed0341f9b8190efff631fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking binary-space-partition v0.1.2
[INFO] [stderr]     Checking thread_profiler v0.1.3
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling cstr-macros v0.1.6
[INFO] [stderr]    Compiling peek-poke-derive v0.2.1
[INFO] [stderr]    Compiling malloc_size_of_derive v0.1.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling mozangle v0.3.1
[INFO] [stderr]     Checking webrender_build v0.1.0
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling gleam v0.6.19
[INFO] [stderr]    Compiling webrender v0.61.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking cstr v0.1.7
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.117/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="rc"' --cfg 'feature="serde_derive"' --cfg 'feature="std"' -C metadata=264004b07a4ccb81 -C extra-filename=-264004b07a4ccb81 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-0044fa4f18f00cef.so --cap-lints allow --cap-lints=forbid --cfg ops_bound --cfg core_reverse --cfg de_boxed_c_str --cfg de_boxed_path --cfg de_rc_dst --cfg core_duration --cfg integer128 --cfg range_inclusive --cfg num_nonzero --cfg core_try_from --cfg num_nonzero_signed --cfg std_atomic64 --cfg std_atomic` (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: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4fffa7ce38adfa14a2e51d5338aeea2afc819813f1ed0341f9b8190efff631fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fffa7ce38adfa14a2e51d5338aeea2afc819813f1ed0341f9b8190efff631fe", kill_on_drop: false }`
[INFO] [stdout] 4fffa7ce38adfa14a2e51d5338aeea2afc819813f1ed0341f9b8190efff631fe