[INFO] fetching crate dgraph-tonic 0.8.6...
[INFO] testing dgraph-tonic-0.8.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate dgraph-tonic 0.8.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate dgraph-tonic 0.8.6 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dgraph-tonic 0.8.6
[INFO] finished tweaking crates.io crate dgraph-tonic 0.8.6
[INFO] tweaked toml for crates.io crate dgraph-tonic 0.8.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0882cd4f81215e059c9fa73b1efe5f301e17a3aa5f1d84ec99652d324e0ba975
[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" "0882cd4f81215e059c9fa73b1efe5f301e17a3aa5f1d84ec99652d324e0ba975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0882cd4f81215e059c9fa73b1efe5f301e17a3aa5f1d84ec99652d324e0ba975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0882cd4f81215e059c9fa73b1efe5f301e17a3aa5f1d84ec99652d324e0ba975", kill_on_drop: false }`
[INFO] [stdout] 0882cd4f81215e059c9fa73b1efe5f301e17a3aa5f1d84ec99652d324e0ba975
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3946a81a12c1bda31757275ecf8efc4074dfc9d4d091801e54999fb0c2f4cd8d
[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" "3946a81a12c1bda31757275ecf8efc4074dfc9d4d091801e54999fb0c2f4cd8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tower-layer v0.3.0
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr] error: could not compile `ring`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name ring --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ring-0.16.19/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="alloc"' --cfg 'feature="default"' --cfg 'feature="dev_urandom_fallback"' --cfg 'feature="once_cell"' -C metadata=c0b552ade098edd9 -C extra-filename=-c0b552ade098edd9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-6f12b0679cd4d4e6.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-fe08bf82c287d44f.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-37d4123b82335501.rmeta --extern untrusted=/opt/rustwide/target/debug/deps/libuntrusted-77ec9bc9f48f5db0.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/ring-c22b6d33a599ddae/out -l static=ring-core -l static=ring-test` (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" "3946a81a12c1bda31757275ecf8efc4074dfc9d4d091801e54999fb0c2f4cd8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3946a81a12c1bda31757275ecf8efc4074dfc9d4d091801e54999fb0c2f4cd8d", kill_on_drop: false }`
[INFO] [stdout] 3946a81a12c1bda31757275ecf8efc4074dfc9d4d091801e54999fb0c2f4cd8d