[INFO] fetching crate cargo-contract 0.8.0...
[INFO] testing cargo-contract-0.8.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate cargo-contract 0.8.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cargo-contract 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 cargo-contract 0.8.0
[INFO] finished tweaking crates.io crate cargo-contract 0.8.0
[INFO] tweaked toml for crates.io crate cargo-contract 0.8.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate cargo-contract 0.8.0 already has a lockfile, it will not be regenerated
[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 ref-cast-impl v1.0.2
[INFO] [stderr]   Downloaded sp-consensus-babe v0.8.0
[INFO] [stderr]   Downloaded sp-npos-elections-compact v2.0.0
[INFO] [stderr]   Downloaded pallet-im-online v2.0.0
[INFO] [stderr]   Downloaded sp-npos-elections v2.0.0
[INFO] [stderr]   Downloaded sp-consensus-vrf v0.8.0
[INFO] [stderr]   Downloaded binaryen v0.12.0
[INFO] [stderr]   Downloaded contract-metadata v0.2.0
[INFO] [stderr]   Downloaded wasm-timer v0.2.5
[INFO] [stderr]   Downloaded jsonrpsee-proc-macros v0.1.0
[INFO] [stderr]   Downloaded pallet-staking v2.0.0
[INFO] [stderr]   Downloaded jsonrpsee v0.1.0
[INFO] [stderr]   Downloaded wabt v0.10.0
[INFO] [stderr]   Downloaded soketto v0.3.2
[INFO] [stderr]   Downloaded pwasm-utils v0.16.0
[INFO] [stderr]   Downloaded pallet-indices v2.0.0
[INFO] [stderr]   Downloaded binaryen-sys v0.12.0
[INFO] [stderr]   Downloaded sp-consensus-slots v0.8.0
[INFO] [stderr]   Downloaded wabt-sys v0.8.0
[INFO] [stderr]   Downloaded sp-authority-discovery v2.0.0
[INFO] [stderr]   Downloaded substrate-subxt v0.13.0
[INFO] [stderr]   Downloaded ref-cast v1.0.2
[INFO] [stderr]   Downloaded substrate-subxt-proc-macro v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 14c76f022121f10dfc534a3479fdb66bab38133b9f780b0af94fb6d18372d12c
[INFO] running `Command { std: "docker" "start" "-a" "14c76f022121f10dfc534a3479fdb66bab38133b9f780b0af94fb6d18372d12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c76f022121f10dfc534a3479fdb66bab38133b9f780b0af94fb6d18372d12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c76f022121f10dfc534a3479fdb66bab38133b9f780b0af94fb6d18372d12c", kill_on_drop: false }`
[INFO] [stdout] 14c76f022121f10dfc534a3479fdb66bab38133b9f780b0af94fb6d18372d12c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 6b0a2fafcb6f162f10f8fc9e3d1b001fca036f3e83ad463e81dadd72adb04b9c
[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" "6b0a2fafcb6f162f10f8fc9e3d1b001fca036f3e83ad463e81dadd72adb04b9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling byte-slice-cast v0.3.5
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling parity-wasm v0.41.0
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pwasm-utils v0.16.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling binaryen-sys v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling semver-parser v0.10.0
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling zip v0.5.8
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling structopt v0.3.20
[INFO] [stderr]    Compiling cargo-contract v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.117/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=065579d40f330a29 -C extra-filename=-065579d40f330a29 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fc674c02767ecd53.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-1ba06248e155a417.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-6ae7e6acc55a0afb.rlib --extern proc_macro --cap-lints allow --cap-lints=warn --cfg underscore_consts` (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" "6b0a2fafcb6f162f10f8fc9e3d1b001fca036f3e83ad463e81dadd72adb04b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b0a2fafcb6f162f10f8fc9e3d1b001fca036f3e83ad463e81dadd72adb04b9c", kill_on_drop: false }`
[INFO] [stdout] 6b0a2fafcb6f162f10f8fc9e3d1b001fca036f3e83ad463e81dadd72adb04b9c