[INFO] fetching crate substrate-browser-utils 0.8.0...
[INFO] testing substrate-browser-utils-0.8.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate substrate-browser-utils 0.8.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate substrate-browser-utils 0.8.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate substrate-browser-utils 0.8.0
[INFO] finished tweaking crates.io crate substrate-browser-utils 0.8.0
[INFO] tweaked toml for crates.io crate substrate-browser-utils 0.8.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kvdb-web v0.7.0
[INFO] [stderr]   Downloaded send_wrapper v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 0cd115abeb330c631b8f881ea9868b579dd07f7f4320fb79dcae2395309fe595
[INFO] running `Command { std: "docker" "start" "-a" "0cd115abeb330c631b8f881ea9868b579dd07f7f4320fb79dcae2395309fe595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cd115abeb330c631b8f881ea9868b579dd07f7f4320fb79dcae2395309fe595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd115abeb330c631b8f881ea9868b579dd07f7f4320fb79dcae2395309fe595", kill_on_drop: false }`
[INFO] [stdout] 0cd115abeb330c631b8f881ea9868b579dd07f7f4320fb79dcae2395309fe595
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", 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] 1d1b91d3ad8b38757b069a5332dd4d65b917810cb8aacb075c286d779214e2a1
[INFO] running `Command { std: "docker" "start" "-a" "1d1b91d3ad8b38757b069a5332dd4d65b917810cb8aacb075c286d779214e2a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling send_wrapper v0.4.0
[INFO] [stderr]    Compiling cpuid-bool v0.2.0
[INFO] [stderr]    Compiling nohash-hasher v0.2.0
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling mio-named-pipes v0.1.7
[INFO] [stderr]    Compiling ip_network v0.3.4
[INFO] [stderr]    Compiling retain_mut v0.1.2
[INFO] [stderr]    Compiling send_wrapper v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling linked_hash_set v0.1.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dns-parser v0.8.0
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling uint v0.8.5
[INFO] [stderr]    Compiling snow v0.7.2
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling block-cipher v0.8.0
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling directories v2.0.2
[INFO] [stderr]    Compiling minicbor-derive v0.4.1
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling slog_derive v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling sha2 v0.9.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling blake2b_simd v0.5.11
[INFO] [stderr]    Compiling blake2s_simd v0.5.11
[INFO] [stderr]    Compiling aes-soft v0.5.0
[INFO] [stderr]    Compiling stream-cipher v0.7.1
[INFO] [stderr]    Compiling polyval v0.4.5
[INFO] [stderr]    Compiling poly1305 v0.6.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling lru v0.6.3
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling ghash v0.3.1
[INFO] [stderr]    Compiling aes v0.5.0
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling ct-logs v0.7.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling jsonrpc-core v15.1.0
[INFO] [stderr]    Compiling sp-chain-spec v2.0.0
[INFO] [stderr]    Compiling tracing-subscriber v0.2.15
[INFO] [stderr]    Compiling curve25519-dalek v3.0.0
[INFO] [stderr]    Compiling curve25519-dalek v2.1.0
[INFO] [stderr]    Compiling merlin v2.0.0
[INFO] [stderr]    Compiling chacha20 v0.5.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling aes-gcm v0.7.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling rustls-native-certs v0.4.0
[INFO] [stderr]    Compiling sp-api-proc-macro v2.0.0
[INFO] [stderr]    Compiling jsonrpc-derive v15.1.0
[INFO] [stderr]    Compiling sc-chain-spec-derive v2.0.0
[INFO] [stderr]    Compiling miow v0.3.6
[INFO] [stderr]    Compiling slog-json v2.3.0
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling chacha20poly1305 v0.6.0
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling x25519-dalek v1.1.0
[INFO] [stderr]    Compiling parity-scale-codec v1.3.5
[INFO] [stderr]    Compiling x25519-dalek v0.6.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling fixed-hash v0.6.1
[INFO] [stderr]    Compiling schnorrkel v0.9.1
[INFO] [stderr]    Compiling tiny-bip39 v0.7.3
[INFO] [stderr]    Compiling twox-hash v1.6.0
[INFO] [stderr]    Compiling jsonrpc-pubsub v15.1.0
[INFO] [stderr]    Compiling parity-ws v0.10.0
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr] error: could not compile `tracing-subscriber`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name tracing_subscriber --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tracing-subscriber-0.2.15/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="ansi"' --cfg 'feature="ansi_term"' --cfg 'feature="chrono"' --cfg 'feature="default"' --cfg 'feature="env-filter"' --cfg 'feature="fmt"' --cfg 'feature="json"' --cfg 'feature="lazy_static"' --cfg 'feature="matchers"' --cfg 'feature="regex"' --cfg 'feature="registry"' --cfg 'feature="serde"' --cfg 'feature="serde_json"' --cfg 'feature="sharded-slab"' --cfg 'feature="smallvec"' --cfg 'feature="thread_local"' --cfg 'feature="tracing"' --cfg 'feature="tracing-log"' --cfg 'feature="tracing-serde"' -C metadata=941a1022f2fe8c8d -C extra-filename=-941a1022f2fe8c8d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-25ca82cc7e01f56d.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-34bc877b1fa75965.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rmeta --extern matchers=/opt/rustwide/target/debug/deps/libmatchers-db6f7c4e86cbd1fb.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-88a1e75c7e2bfbce.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3b1f4a3923cc42e3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-3c1041afd6c491a6.rmeta --extern sharded_slab=/opt/rustwide/target/debug/deps/libsharded_slab-f3da79da0ae43e9c.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-5ae1e2fa6e7c2ceb.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-abd19461110d9879.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-920c6234c374f780.rmeta --extern tracing_core=/opt/rustwide/target/debug/deps/libtracing_core-b99d1da45829bc17.rmeta --extern tracing_log=/opt/rustwide/target/debug/deps/libtracing_log-ace9498c835e1657.rmeta --extern tracing_serde=/opt/rustwide/target/debug/deps/libtracing_serde-41c029b9ec046e86.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" "1d1b91d3ad8b38757b069a5332dd4d65b917810cb8aacb075c286d779214e2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d1b91d3ad8b38757b069a5332dd4d65b917810cb8aacb075c286d779214e2a1", kill_on_drop: false }`
[INFO] [stdout] 1d1b91d3ad8b38757b069a5332dd4d65b917810cb8aacb075c286d779214e2a1