[INFO] fetching crate casperlabs-engine-core 0.7.1...
[INFO] testing casperlabs-engine-core-0.7.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate casperlabs-engine-core 0.7.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate casperlabs-engine-core 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 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-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f54dcb170239aad9e26c430aa2ac59e1630306bd78f300dba6f731ff4c09753f
[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" "f54dcb170239aad9e26c430aa2ac59e1630306bd78f300dba6f731ff4c09753f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f54dcb170239aad9e26c430aa2ac59e1630306bd78f300dba6f731ff4c09753f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54dcb170239aad9e26c430aa2ac59e1630306bd78f300dba6f731ff4c09753f", kill_on_drop: false }`
[INFO] [stdout] f54dcb170239aad9e26c430aa2ac59e1630306bd78f300dba6f731ff4c09753f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de06fc3683fbe2314d89c7eca62415b61e8f45d8e543f04d41ba07aac618e3d0
[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" "de06fc3683fbe2314d89c7eca62415b61e8f45d8e543f04d41ba07aac618e3d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling hex_fmt v0.3.0
[INFO] [stderr]    Compiling base16 v0.2.1
[INFO] [stderr]    Compiling parity-wasm v0.41.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling blake2 v0.8.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling uint v0.8.5
[INFO] [stderr]    Compiling wabt-sys v0.8.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling wasmi-validation v0.3.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling wasmi v0.6.2
[INFO] [stderr]    Compiling lmdb v0.8.0
[INFO] [stderr]    Compiling serde v1.0.118
[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,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-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=a2b9920b6d7d5a34 -C extra-filename=-a2b9920b6d7d5a34 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bit_set=/opt/rustwide/target/debug/deps/libbit_set-a0c1b6bd36be8ca8.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-de31228f2c0549ed.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-91b6af920b096909.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7895c92c6d278491.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-4a59219676fe7595.rmeta --extern quick_error=/opt/rustwide/target/debug/deps/libquick_error-02525b70077f996f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-384fad76ac26eed5.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-93019106e9a94e72.rmeta --extern rand_xorshift=/opt/rustwide/target/debug/deps/librand_xorshift-716d63fd76a0fe98.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-2b91d401512672d8.rmeta --extern rusty_fork=/opt/rustwide/target/debug/deps/librusty_fork-c569feef88e0c7fc.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-cbbcb525fd43f24c.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" "de06fc3683fbe2314d89c7eca62415b61e8f45d8e543f04d41ba07aac618e3d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de06fc3683fbe2314d89c7eca62415b61e8f45d8e543f04d41ba07aac618e3d0", kill_on_drop: false }`
[INFO] [stdout] de06fc3683fbe2314d89c7eca62415b61e8f45d8e543f04d41ba07aac618e3d0