[INFO] fetching crate pallet-randomness-collective-flip 2.0.0-alpha.8...
[INFO] checking pallet-randomness-collective-flip-2.0.0-alpha.8 against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] extracting crate pallet-randomness-collective-flip 2.0.0-alpha.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pallet-randomness-collective-flip 2.0.0-alpha.8 on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pallet-randomness-collective-flip 2.0.0-alpha.8
[INFO] finished tweaking crates.io crate pallet-randomness-collective-flip 2.0.0-alpha.8
[INFO] tweaked toml for crates.io crate pallet-randomness-collective-flip 2.0.0-alpha.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] a89af8f94190c67c2e91d8cae9cfd80ed0778b2e0b9edbe73a1c202accb246db
[INFO] running `"docker" "start" "-a" "a89af8f94190c67c2e91d8cae9cfd80ed0778b2e0b9edbe73a1c202accb246db"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking safe-mix v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking sp-arithmetic v2.0.0-alpha.8
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking sp-wasm-interface v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-runtime-interface v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-core v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-trie v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-inherents v2.0.0-alpha.8
[INFO] [stderr]     Checking frame-metadata v11.0.0-alpha.8
[INFO] [stderr]     Checking sp-state-machine v0.8.0-alpha.8
[INFO] [stderr]     Checking sp-io v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-application-crypto v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-runtime v2.0.0-alpha.8
[INFO] [stderr]     Checking sp-version v2.0.0-alpha.8
[INFO] [stderr]     Checking frame-support v2.0.0-alpha.8
[INFO] [stderr]     Checking frame-system v2.0.0-alpha.8
[INFO] [stderr]     Checking pallet-randomness-collective-flip v2.0.0-alpha.8 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `sp_core`
[INFO] [stderr]    --> src/lib.rs:136:6
[INFO] [stderr]     |
[INFO] [stderr] 136 |     use sp_core::H256;
[INFO] [stderr]     |         ^^^^^^^ use of undeclared type or module `sp_core`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `sp_io`
[INFO] [stderr]    --> src/lib.rs:188:23
[INFO] [stderr]     |
[INFO] [stderr] 188 |     fn new_test_ext() -> sp_io::TestExternalities {
[INFO] [stderr]     |                          ^^^^^ use of undeclared type or module `sp_io`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `pallet-randomness-collective-flip`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a89af8f94190c67c2e91d8cae9cfd80ed0778b2e0b9edbe73a1c202accb246db"`
[INFO] running `"docker" "rm" "-f" "a89af8f94190c67c2e91d8cae9cfd80ed0778b2e0b9edbe73a1c202accb246db"`
[INFO] [stdout] a89af8f94190c67c2e91d8cae9cfd80ed0778b2e0b9edbe73a1c202accb246db