[INFO] cloning repository https://github.com/airalab/xrt-lp-rewards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/airalab/xrt-lp-rewards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairalab%2Fxrt-lp-rewards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairalab%2Fxrt-lp-rewards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ba143428add2a85fbb4082b17733f180b1b70bd
[INFO] documenting airalab/xrt-lp-rewards against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairalab%2Fxrt-lp-rewards" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/airalab/xrt-lp-rewards on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/airalab/xrt-lp-rewards
[INFO] finished tweaking git repo https://github.com/airalab/xrt-lp-rewards
[INFO] tweaked toml for git repo https://github.com/airalab/xrt-lp-rewards written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/airalab/xrt-lp-rewards already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded environmental v1.1.1
[INFO] [stderr]   Downloaded parity-util-mem-derive v0.1.0
[INFO] [stderr]   Downloaded impl-serde v0.3.1
[INFO] [stderr]   Downloaded hash256-std-hasher v0.15.2
[INFO] [stderr]   Downloaded impl-serde v0.2.3
[INFO] [stderr]   Downloaded hmac-drbg v0.2.0
[INFO] [stderr]   Downloaded parity-util-mem v0.7.0
[INFO] [stderr]   Downloaded ed25519 v1.0.1
[INFO] [stderr]   Downloaded base58 v0.1.0
[INFO] [stderr]   Downloaded signature v1.1.0
[INFO] [stderr]   Downloaded keccak v0.1.0
[INFO] [stderr]   Downloaded memory-db v0.24.0
[INFO] [stderr]   Downloaded parity-scale-codec-derive v1.2.0
[INFO] [stderr]   Downloaded integer-sqrt v0.1.3
[INFO] [stderr]   Downloaded radium v0.3.0
[INFO] [stderr]   Downloaded crunchy v0.2.2
[INFO] [stderr]   Downloaded rustc-hex v2.1.0
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded trie-db v0.22.0
[INFO] [stderr]   Downloaded bitvec v0.17.4
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
[INFO] [stderr]   Downloaded zeroize_derive v1.0.0
[INFO] [stderr]   Downloaded trie-root v0.16.0
[INFO] [stderr]   Downloaded wasmi v0.6.2
[INFO] [stderr]   Downloaded tracing-attributes v0.1.9
[INFO] [stderr]   Downloaded parity-wasm v0.41.0
[INFO] [stderr]   Downloaded secrecy v0.6.0
[INFO] [stderr]   Downloaded uint v0.8.3
[INFO] [stderr]   Downloaded curve25519-dalek v2.1.0
[INFO] [stderr]   Downloaded tiny-keccak v2.0.2
[INFO] [stderr]   Downloaded fixed-hash v0.6.1
[INFO] [stderr]   Downloaded schnorrkel v0.9.1
[INFO] [stderr]   Downloaded libsecp256k1 v0.3.5
[INFO] [stderr]   Downloaded ref-cast-impl v1.0.2
[INFO] [stderr]   Downloaded substrate-bip39 v0.4.1
[INFO] [stderr]   Downloaded tiny-bip39 v0.7.3
[INFO] [stderr]   Downloaded hash-db v0.15.2
[INFO] [stderr]   Downloaded impl-trait-for-tuples v0.1.3
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.1
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0-pre.4
[INFO] [stderr]   Downloaded merlin v2.0.0
[INFO] [stderr]   Downloaded impl-codec v0.4.2
[INFO] [stderr]   Downloaded primitive-types v0.7.2
[INFO] [stderr]   Downloaded ref-cast v1.0.2
[INFO] [stderr]   Downloaded wasmi-validation v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "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] 40206a175ca13d35982e3f4dcbcdc264599ce1a91b3eb8f0555444bf10da52b6
[INFO] running `Command { std: "docker" "start" "-a" "40206a175ca13d35982e3f4dcbcdc264599ce1a91b3eb8f0555444bf10da52b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40206a175ca13d35982e3f4dcbcdc264599ce1a91b3eb8f0555444bf10da52b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40206a175ca13d35982e3f4dcbcdc264599ce1a91b3eb8f0555444bf10da52b6", kill_on_drop: false }`
[INFO] [stdout] 40206a175ca13d35982e3f4dcbcdc264599ce1a91b3eb8f0555444bf10da52b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 378cfe65b8732f666a10e0ec12beeea411388e96ca8f649b9a44053c6c25b00b
[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" "378cfe65b8732f666a10e0ec12beeea411388e96ca8f649b9a44053c6c25b00b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking sp-std v2.0.0-rc4 (https://github.com/paritytech/substrate#5c43b2be)
[INFO] [stderr]     Checking signature v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking uint v0.8.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking ed25519 v1.0.1
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking itertools v0.9.0
[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 rand_pcg v0.2.1
[INFO] [stderr]     Checking sp-panic-handler v2.0.0-rc4 (https://github.com/paritytech/substrate#5c43b2be)
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking trie-db v0.22.0
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling sp-debug-derive v2.0.0-rc4 (https://github.com/paritytech/substrate#5c43b2be)
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling rental-impl v0.5.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr] error: could not compile `tracing-attributes`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name tracing_attributes --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tracing-attributes-0.1.9/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -Cembed-bitcode=no -C debuginfo=2 -C metadata=69ed0ae58889e04e -C extra-filename=-69ed0ae58889e04e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-71c5aa24984e0547.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-86659819dd43cd20.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-87cf8cfcf41c3e89.rlib --extern proc_macro --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" "378cfe65b8732f666a10e0ec12beeea411388e96ca8f649b9a44053c6c25b00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "378cfe65b8732f666a10e0ec12beeea411388e96ca8f649b9a44053c6c25b00b", kill_on_drop: false }`
[INFO] [stdout] 378cfe65b8732f666a10e0ec12beeea411388e96ca8f649b9a44053c6c25b00b