[INFO] fetching crate pallet-offences-benchmarking 2.0.0-rc2...
[INFO] checking pallet-offences-benchmarking-2.0.0-rc2 against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] extracting crate pallet-offences-benchmarking 2.0.0-rc2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate pallet-offences-benchmarking 2.0.0-rc2 on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pallet-offences-benchmarking 2.0.0-rc2
[INFO] finished tweaking crates.io crate pallet-offences-benchmarking 2.0.0-rc2
[INFO] tweaked toml for crates.io crate pallet-offences-benchmarking 2.0.0-rc2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pallet-babe v2.0.0-rc2
[INFO] [stderr]   Downloaded sp-consensus-vrf v0.8.0-rc2
[INFO] [stderr]   Downloaded pallet-finality-tracker v2.0.0-rc2
[INFO] [stderr]   Downloaded pallet-im-online v2.0.0-rc2
[INFO] [stderr]   Downloaded sp-consensus-babe v0.8.0-rc2
[INFO] [stderr]   Downloaded sp-finality-tracker v2.0.0-rc2
[INFO] [stderr]   Downloaded sp-finality-grandpa v2.0.0-rc2
[INFO] [stderr]   Downloaded pallet-grandpa v2.0.0-rc2
[INFO] [stderr]   Downloaded pallet-offences v2.0.0-rc2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+4662032ab74cd44d423120d08d251dfead4914a0" "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] 94aa286a4299494a66e5db3c03b5892a5b057aa022f5ce6e528f19147b831030
[INFO] running `"docker" "start" "-a" "94aa286a4299494a66e5db3c03b5892a5b057aa022f5ce6e528f19147b831030"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking merlin v2.0.0
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking hashbrown v0.6.3
[INFO] [stderr]    Compiling sp-phragmen-compact v2.0.0-rc2
[INFO] [stderr]     Checking sp-arithmetic v2.0.0-rc2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking finality-grandpa v0.12.3
[INFO] [stderr]     Checking schnorrkel v0.9.1
[INFO] [stderr]     Checking memory-db v0.20.1
[INFO] [stderr]     Checking trie-db v0.20.1
[INFO] [stderr]     Checking substrate-bip39 v0.4.1
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking sp-wasm-interface v2.0.0-rc2
[INFO] [stderr]     Checking sp-phragmen v2.0.0-rc2
[INFO] [stderr]     Checking sp-runtime-interface v2.0.0-rc2
[INFO] [stderr]     Checking sp-core v2.0.0-rc2
[INFO] [stderr]     Checking sp-trie v2.0.0-rc2
[INFO] [stderr]     Checking sp-inherents v2.0.0-rc2
[INFO] [stderr]     Checking frame-metadata v11.0.0-rc2
[INFO] [stderr]     Checking sp-finality-tracker v2.0.0-rc2
[INFO] [stderr]     Checking sp-state-machine v0.8.0-rc2
[INFO] [stderr]     Checking sp-io v2.0.0-rc2
[INFO] [stderr]     Checking sp-application-crypto v2.0.0-rc2
[INFO] [stderr]     Checking sp-runtime v2.0.0-rc2
[INFO] [stderr]     Checking sp-version v2.0.0-rc2
[INFO] [stderr]     Checking frame-support v2.0.0-rc2
[INFO] [stderr]     Checking sp-staking v2.0.0-rc2
[INFO] [stderr]     Checking sp-authorship v2.0.0-rc2
[INFO] [stderr]     Checking sp-consensus-vrf v0.8.0-rc2
[INFO] [stderr]     Checking sp-api v2.0.0-rc2
[INFO] [stderr]     Checking sp-consensus v0.8.0-rc2
[INFO] [stderr]     Checking sp-timestamp v2.0.0-rc2
[INFO] [stderr]     Checking sp-session v2.0.0-rc2
[INFO] [stderr]     Checking sp-finality-grandpa v2.0.0-rc2
[INFO] [stderr]     Checking sp-consensus-babe v0.8.0-rc2
[INFO] [stderr]     Checking frame-system v2.0.0-rc2
[INFO] [stderr]     Checking linregress v0.1.7
[INFO] [stderr]     Checking frame-benchmarking v2.0.0-rc2
[INFO] [stderr]     Checking pallet-authorship v2.0.0-rc2
[INFO] [stderr]     Checking pallet-finality-tracker v2.0.0-rc2
[INFO] [stderr]     Checking pallet-timestamp v2.0.0-rc2
[INFO] [stderr]     Checking pallet-balances v2.0.0-rc2
[INFO] [stderr]     Checking pallet-session v2.0.0-rc2
[INFO] [stderr]     Checking pallet-offences v2.0.0-rc2
[INFO] [stderr]     Checking pallet-im-online v2.0.0-rc2
[INFO] [stderr]     Checking pallet-grandpa v2.0.0-rc2
[INFO] [stderr]     Checking pallet-staking v2.0.0-rc2
[INFO] [stderr]     Checking pallet-babe v2.0.0-rc2
[INFO] [stderr]     Checking pallet-offences-benchmarking v2.0.0-rc2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `serde`
[INFO] [stderr]   --> src/mock.rs:93:1
[INFO] [stderr]    |
[INFO] [stderr] 93 | / sp_runtime::impl_opaque_keys! {
[INFO] [stderr] 94 | |     pub struct SessionKeys {
[INFO] [stderr] 95 | |         pub foo: sp_runtime::testing::UintAuthorityId,
[INFO] [stderr] 96 | |     }
[INFO] [stderr] 97 | | }
[INFO] [stderr]    | |_^ can't find crate
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `pallet-offences-benchmarking`.
[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" "94aa286a4299494a66e5db3c03b5892a5b057aa022f5ce6e528f19147b831030"`
[INFO] running `"docker" "rm" "-f" "94aa286a4299494a66e5db3c03b5892a5b057aa022f5ce6e528f19147b831030"`
[INFO] [stdout] 94aa286a4299494a66e5db3c03b5892a5b057aa022f5ce6e528f19147b831030