[INFO] fetching crate casperlabs-engine-core 0.6.1...
[INFO] checking casperlabs-engine-core-0.6.1 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate casperlabs-engine-core 0.6.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate casperlabs-engine-core 0.6.1 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casperlabs-engine-core 0.6.1
[INFO] finished tweaking crates.io crate casperlabs-engine-core 0.6.1
[INFO] tweaked toml for crates.io crate casperlabs-engine-core 0.6.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c95f2b357bc9cb9149186d31287f5bf24866f25ee85e56db05cc98015c9f7a97
[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" "c95f2b357bc9cb9149186d31287f5bf24866f25ee85e56db05cc98015c9f7a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c95f2b357bc9cb9149186d31287f5bf24866f25ee85e56db05cc98015c9f7a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c95f2b357bc9cb9149186d31287f5bf24866f25ee85e56db05cc98015c9f7a97", kill_on_drop: false }`
[INFO] [stdout] c95f2b357bc9cb9149186d31287f5bf24866f25ee85e56db05cc98015c9f7a97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4947c9843deb1cc801b8f04147d17fbe4eb8a6849ea4da4c2dd5dec68f58e646
[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" "4947c9843deb1cc801b8f04147d17fbe4eb8a6849ea4da4c2dd5dec68f58e646", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking adler v0.2.2
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking base16 v0.2.1
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking uint v0.8.3
[INFO] [stderr]    Compiling wabt-sys v0.7.2
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking lmdb v0.8.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.33/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=b1b932c6aade2336 -C extra-filename=-b1b932c6aade2336 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-356020925cb0f224.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e36c53807625c7af.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-1c1787496cb918bb.rmeta --cap-lints allow --cap-lints=forbid` (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" "4947c9843deb1cc801b8f04147d17fbe4eb8a6849ea4da4c2dd5dec68f58e646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4947c9843deb1cc801b8f04147d17fbe4eb8a6849ea4da4c2dd5dec68f58e646", kill_on_drop: false }`
[INFO] [stdout] 4947c9843deb1cc801b8f04147d17fbe4eb8a6849ea4da4c2dd5dec68f58e646