[INFO] fetching crate casperlabs-engine-core 0.7.1...
[INFO] documenting casperlabs-engine-core-0.7.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate casperlabs-engine-core 0.7.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate casperlabs-engine-core 0.7.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casperlabs-engine-core 0.7.1
[INFO] finished tweaking crates.io crate casperlabs-engine-core 0.7.1
[INFO] tweaked toml for crates.io crate casperlabs-engine-core 0.7.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] 6636bc8c605b4ccc7141289d382badf75e0fa06878a23711d26b14d117beec8b
[INFO] running `Command { std: "docker" "start" "-a" "6636bc8c605b4ccc7141289d382badf75e0fa06878a23711d26b14d117beec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6636bc8c605b4ccc7141289d382badf75e0fa06878a23711d26b14d117beec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6636bc8c605b4ccc7141289d382badf75e0fa06878a23711d26b14d117beec8b", kill_on_drop: false }`
[INFO] [stdout] 6636bc8c605b4ccc7141289d382badf75e0fa06878a23711d26b14d117beec8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bd379e9afee61901744be6a1f8f00381fdc1a3c95f4ef671f14e636d136041a
[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" "7bd379e9afee61901744be6a1f8f00381fdc1a3c95f4ef671f14e636d136041a", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking base16 v0.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]    Compiling wabt-sys v0.8.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking pwasm-utils v0.12.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking lmdb v0.8.0
[INFO] [stderr] error: could not compile `proptest`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name proptest --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proptest-0.9.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="bit-set"' --cfg 'feature="break-dead-code"' --cfg 'feature="default"' --cfg 'feature="fork"' --cfg 'feature="lazy_static"' --cfg 'feature="quick-error"' --cfg 'feature="regex-syntax"' --cfg 'feature="rusty-fork"' --cfg 'feature="std"' --cfg 'feature="tempfile"' --cfg 'feature="timeout"' -C metadata=d19cadea51086398 -C extra-filename=-d19cadea51086398 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bit_set=/opt/rustwide/target/debug/deps/libbit_set-df0c224ca93765ae.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-b7cb6f2855b37747.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4984679cbeb82acd.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-705f46f124ac753d.rmeta --extern quick_error=/opt/rustwide/target/debug/deps/libquick_error-9713faaf1226fac1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-7d53a782b7e31c62.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-7d96b87ac6e52968.rmeta --extern rand_xorshift=/opt/rustwide/target/debug/deps/librand_xorshift-7f5d1e63e7bedd3e.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-d1d21519be9940fd.rmeta --extern rusty_fork=/opt/rustwide/target/debug/deps/librusty_fork-d53bc2771a04a5d5.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-7b08bc8ad39c73c8.rmeta --cap-lints allow` (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" "7bd379e9afee61901744be6a1f8f00381fdc1a3c95f4ef671f14e636d136041a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bd379e9afee61901744be6a1f8f00381fdc1a3c95f4ef671f14e636d136041a", kill_on_drop: false }`
[INFO] [stdout] 7bd379e9afee61901744be6a1f8f00381fdc1a3c95f4ef671f14e636d136041a