[INFO] fetching crate grpcio 0.7.1...
[INFO] testing grpcio-0.7.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate grpcio 0.7.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate grpcio 0.7.1 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 grpcio 0.7.1
[INFO] finished tweaking crates.io crate grpcio 0.7.1
[INFO] tweaked toml for crates.io crate grpcio 0.7.1 written to /workspace/builds/worker-9/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 6fbd6526864d27c2d6b09f279744a42bd94f09219e126ee7988651202bf54dd6
[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" "6fbd6526864d27c2d6b09f279744a42bd94f09219e126ee7988651202bf54dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fbd6526864d27c2d6b09f279744a42bd94f09219e126ee7988651202bf54dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fbd6526864d27c2d6b09f279744a42bd94f09219e126ee7988651202bf54dd6", kill_on_drop: false }`
[INFO] [stdout] 6fbd6526864d27c2d6b09f279744a42bd94f09219e126ee7988651202bf54dd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] af96f920145c7dc96ccacf244aea0581762f64a51dcde4cf0d009277b2d7ee60
[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" "af96f920145c7dc96ccacf244aea0581762f64a51dcde4cf0d009277b2d7ee60", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling boringssl-src v0.1.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling grpcio-sys v0.7.2
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr] error: could not compile `futures-util`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.8/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="async-await"' --cfg 'feature="async-await-macro"' --cfg 'feature="channel"' --cfg 'feature="futures-channel"' --cfg 'feature="futures-io"' --cfg 'feature="futures-macro"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="proc-macro-hack"' --cfg 'feature="proc-macro-nested"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' -C metadata=77196e8e9a192c50 -C extra-filename=-77196e8e9a192c50 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_channel=/opt/rustwide/target/debug/deps/libfutures_channel-513df3763516b9e6.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-eb0fbbf52a947ffa.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-62da94cea0ed16a7.rmeta --extern futures_macro=/opt/rustwide/target/debug/deps/libfutures_macro-b67ec4a8798b1d18.so --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-1e2394422c007318.rmeta --extern futures_task=/opt/rustwide/target/debug/deps/libfutures_task-b1ff2fe4590ccf5d.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-e03602aba27a22bc.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-9e4da46d2fe81271.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-1b5011892cb37eb5.rmeta --extern proc_macro_hack=/opt/rustwide/target/debug/deps/libproc_macro_hack-b5fd38e486d5fb72.so --extern proc_macro_nested=/opt/rustwide/target/debug/deps/libproc_macro_nested-cd96790c1dea6f14.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-65742487a18009d6.rmeta --cap-lints allow --cap-lints=warn` (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" "af96f920145c7dc96ccacf244aea0581762f64a51dcde4cf0d009277b2d7ee60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af96f920145c7dc96ccacf244aea0581762f64a51dcde4cf0d009277b2d7ee60", kill_on_drop: false }`
[INFO] [stdout] af96f920145c7dc96ccacf244aea0581762f64a51dcde4cf0d009277b2d7ee60