[INFO] crate pallet-babe 2.0.0-alpha.3 is already in cache
[INFO] checking pallet-babe-2.0.0-alpha.3 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] extracting crate pallet-babe 2.0.0-alpha.3 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate pallet-babe 2.0.0-alpha.3 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pallet-babe 2.0.0-alpha.3
[INFO] finished tweaking crates.io crate pallet-babe 2.0.0-alpha.3
[INFO] tweaked toml for crates.io crate pallet-babe 2.0.0-alpha.3 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8cf08c09f2a51f1bc1bc29e928433c8c312f1c8b6f625ebc4995c26d49ee4cfd
[INFO] running `"docker" "start" "-a" "8cf08c09f2a51f1bc1bc29e928433c8c312f1c8b6f625ebc4995c26d49ee4cfd"`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking parity-send-wrapper v0.1.0
[INFO] [stderr]    Compiling ring v0.16.11
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking chacha20-poly1305-aead v0.1.2
[INFO] [stderr]     Checking quicksink v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking uint v0.8.2
[INFO] [stderr]    Compiling snow v0.6.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking salsa20-core v0.2.3
[INFO] [stderr]     Checking ctr v0.3.2
[INFO] [stderr]     Checking cuckoofilter v0.3.2
[INFO] [stderr]     Checking sp-panic-handler v2.0.0-alpha.3
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]     Checking fixed-hash v0.5.2
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking salsa20 v0.3.0
[INFO] [stderr]     Checking aes-ctr v0.3.0
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.59
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.11
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling sp-debug-derive v2.0.0-alpha.3
[INFO] [stderr]    Compiling asn1_der_derive v0.1.2
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]    Compiling derive_more v0.99.3
[INFO] [stderr]    Compiling frame-support-procedural-tools-derive v2.0.0-alpha.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling libp2p-core-derive v0.16.0
[INFO] [stderr] error: could not compile `wasm-bindgen-backend`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name wasm_bindgen_backend --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wasm-bindgen-backend-0.2.59/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="spans"' -C metadata=457b91e25ca6c418 -C extra-filename=-457b91e25ca6c418 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bumpalo=/opt/rustwide/target/debug/deps/libbumpalo-04e02b7865a3a36c.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-14246eb7fa131f83.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-e5443d3e8ccf3217.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-22598ef6c87da0f4.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-fd360626638b72c9.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-65c75b2f8b83b116.rmeta --extern wasm_bindgen_shared=/opt/rustwide/target/debug/deps/libwasm_bindgen_shared-c9b73c76f21b74d8.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: 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-0.1.7/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C debuginfo=2 -C metadata=51ea81f106399c8f -C extra-filename=-51ea81f106399c8f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-fd360626638b72c9.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-65c75b2f8b83b116.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sp-debug-derive`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name sp_debug_derive --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/sp-debug-derive-2.0.0-alpha.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C debuginfo=2 --cfg 'feature="std"' -C metadata=42c83c1eabd4ecaf -C extra-filename=-42c83c1eabd4ecaf --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-22598ef6c87da0f4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-fd360626638b72c9.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-65c75b2f8b83b116.rlib --extern proc_macro --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 `"docker" "inspect" "8cf08c09f2a51f1bc1bc29e928433c8c312f1c8b6f625ebc4995c26d49ee4cfd"`
[INFO] running `"docker" "rm" "-f" "8cf08c09f2a51f1bc1bc29e928433c8c312f1c8b6f625ebc4995c26d49ee4cfd"`
[INFO] [stdout] 8cf08c09f2a51f1bc1bc29e928433c8c312f1c8b6f625ebc4995c26d49ee4cfd