[INFO] cloning repository https://github.com/playzero/subzero
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/playzero/subzero" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplayzero%2Fsubzero", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplayzero%2Fsubzero'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c600e34f3c29288e309b2f997def15073987a10
[INFO] checking playzero/subzero against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplayzero%2Fsubzero" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/playzero/subzero on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/playzero/subzero
[INFO] finished tweaking git repo https://github.com/playzero/subzero
[INFO] tweaked toml for git repo https://github.com/playzero/subzero written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/playzero/subzero already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] b710d62b4933af9e573ac4ffafcacf0ab06914c3fcb4b53910b4494172e973ee
[INFO] running `Command { std: "docker" "start" "-a" "b710d62b4933af9e573ac4ffafcacf0ab06914c3fcb4b53910b4494172e973ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b710d62b4933af9e573ac4ffafcacf0ab06914c3fcb4b53910b4494172e973ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b710d62b4933af9e573ac4ffafcacf0ab06914c3fcb4b53910b4494172e973ee", kill_on_drop: false }`
[INFO] [stdout] b710d62b4933af9e573ac4ffafcacf0ab06914c3fcb4b53910b4494172e973ee
[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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6fca3aff70d5151f894dfdea3ae93fa38fff256f7679cba9b5174257fc92e88
[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" "b6fca3aff70d5151f894dfdea3ae93fa38fff256f7679cba9b5174257fc92e88", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]    Compiling parity-util-mem v0.9.0
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking signature v1.3.0
[INFO] [stderr]     Checking byte-slice-cast v1.0.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking sp-std v3.0.0 (/opt/rustwide/workdir/primitives/std)
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking hash-db v0.15.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking environmental v1.1.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking dyn-clone v1.0.4
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling prometheus v0.11.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.69.0
[INFO] [stderr]    Compiling target-lexicon v0.11.1
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking unsigned-varint v0.5.1
[INFO] [stderr]     Checking bs58 v0.4.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking cpuid-bool v0.2.0
[INFO] [stderr]    Compiling wasmtime-cache v0.22.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking parity-send-wrapper v0.1.0
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]     Checking wasmparser v0.71.0
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling sc-consensus-slots v0.9.0 (/opt/rustwide/workdir/client/consensus/slots)
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]     Checking ip_network v0.3.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]     Checking retain_mut v0.1.2
[INFO] [stderr]     Checking pdqselect v0.1.0
[INFO] [stderr]     Checking mio-named-pipes v0.1.7
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling pin-project-lite v0.1.11
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]     Checking safe-mix v1.0.1
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling platforms v1.1.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]    Compiling quick-error v2.0.0
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]     Checking fs_extra v1.2.0
[INFO] [stderr]    Compiling trybuild v1.0.39
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking dissimilar v1.0.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling chain-spec-builder v2.0.0 (/opt/rustwide/workdir/bin/utils/chain-spec-builder)
[INFO] [stderr]     Checking send_wrapper v0.5.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking ckb-merkle-mountain-range v0.3.1
[INFO] [stderr]     Checking parity-wasm v0.32.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking ed25519 v1.0.3
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking trie-root v0.16.0
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking quicksink v0.1.2
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]    Compiling cpp_demangle v0.3.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]     Checking wast v32.0.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking predicates v1.0.7
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr] error: could not compile `object`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name object --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/object-0.23.0/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="archive"' --cfg 'feature="coff"' --cfg 'feature="elf"' --cfg 'feature="macho"' --cfg 'feature="pe"' --cfg 'feature="read_core"' --cfg 'feature="unaligned"' -C metadata=8dd7daa6e9bb70fd -C extra-filename=-8dd7daa6e9bb70fd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "b6fca3aff70d5151f894dfdea3ae93fa38fff256f7679cba9b5174257fc92e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6fca3aff70d5151f894dfdea3ae93fa38fff256f7679cba9b5174257fc92e88", kill_on_drop: false }`
[INFO] [stdout] b6fca3aff70d5151f894dfdea3ae93fa38fff256f7679cba9b5174257fc92e88