[INFO] fetching crate fawkes-crypto-phase2 0.2.2...
[INFO] documenting fawkes-crypto-phase2-0.2.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate fawkes-crypto-phase2 0.2.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate fawkes-crypto-phase2 0.2.2 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fawkes-crypto-phase2 0.2.2
[INFO] finished tweaking crates.io crate fawkes-crypto-phase2 0.2.2
[INFO] tweaked toml for crates.io crate fawkes-crypto-phase2 0.2.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate fawkes-crypto-phase2 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74985bb1ab8f7b58d2bd36b4e50d98a19897b66dbc857f22906229910d2af6eb
[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" "74985bb1ab8f7b58d2bd36b4e50d98a19897b66dbc857f22906229910d2af6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74985bb1ab8f7b58d2bd36b4e50d98a19897b66dbc857f22906229910d2af6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74985bb1ab8f7b58d2bd36b4e50d98a19897b66dbc857f22906229910d2af6eb", kill_on_drop: false }`
[INFO] [stdout] 74985bb1ab8f7b58d2bd36b4e50d98a19897b66dbc857f22906229910d2af6eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0808326dc6df2af998301bea231a2f7a8ea97a0ed3869b538c95eee70aa1e2d6
[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" "0808326dc6df2af998301bea231a2f7a8ea97a0ed3869b538c95eee70aa1e2d6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]    Compiling ff_derive_ce v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking ff_ce v0.7.1
[INFO] [stderr]     Checking fawkes-crypto-pairing_ce v0.18.0
[INFO] [stderr]     Checking fawkes-crypto-bellman_ce v0.3.1
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking fawkes-crypto-phase2 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting fawkes-crypto-phase2 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `fawkes-crypto-phase2`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name verify_contribution src/bin/verify_contribution.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="rust-crypto"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern blake2=/opt/rustwide/target/debug/deps/libblake2-a989bef193bf9255.rmeta --extern blake2_rfc=/opt/rustwide/target/debug/deps/libblake2_rfc-7bbf6f9c3b97bd10.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-364c148656283980.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-b31c81520e08f43a.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-1d11686e5609488c.rmeta --extern exitcode=/opt/rustwide/target/debug/deps/libexitcode-2ed41d16722122b1.rmeta --extern bellman_ce=/opt/rustwide/target/debug/deps/libfawkes_crypto_bellman_ce-c152327e21e643bf.rmeta --extern fawkes_crypto_phase2=/opt/rustwide/target/debug/deps/libfawkes_crypto_phase2-e48dd3abb7cf6ef0.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-b38b297ae8f34fd9.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9b4c3c8ba22d4f89.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-3add28dd3129f345.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-d6a5ee60f6d50bfb.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-9e18ae946552d161.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2aefcda68bc59edd.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-fb4b4bb610192578.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2ae9cd59edec41aa.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-14784f019161d4d7.rmeta --cap-lints=warn --crate-version 0.2.2` (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" "0808326dc6df2af998301bea231a2f7a8ea97a0ed3869b538c95eee70aa1e2d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0808326dc6df2af998301bea231a2f7a8ea97a0ed3869b538c95eee70aa1e2d6", kill_on_drop: false }`
[INFO] [stdout] 0808326dc6df2af998301bea231a2f7a8ea97a0ed3869b538c95eee70aa1e2d6