[INFO] fetching crate pallet-offences-benchmarking 2.0.0...
[INFO] checking pallet-offences-benchmarking-2.0.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate pallet-offences-benchmarking 2.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pallet-offences-benchmarking 2.0.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pallet-offences-benchmarking 2.0.0
[INFO] finished tweaking crates.io crate pallet-offences-benchmarking 2.0.0
[INFO] tweaked toml for crates.io crate pallet-offences-benchmarking 2.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sp-consensus-babe v0.8.0
[INFO] [stderr]   Downloaded sp-finality-tracker v2.0.0
[INFO] [stderr]   Downloaded pallet-offences v2.0.0
[INFO] [stderr]   Downloaded pallet-im-online v2.0.0
[INFO] [stderr]   Downloaded pallet-finality-tracker v2.0.0
[INFO] [stderr]   Downloaded pallet-grandpa v2.0.0
[INFO] [stderr]   Downloaded sp-consensus-vrf v0.8.0
[INFO] [stderr]   Downloaded sp-consensus-slots v0.8.0
[INFO] [stderr]   Downloaded pallet-babe v2.0.0
[INFO] [stderr]   Downloaded sp-finality-grandpa v2.0.0
[INFO] [stderr]   Downloaded finality-grandpa v0.12.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ab0e3e3c5ebb88a726a3a920842cd7c48fe13f55609e74416955bbe22172da5
[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" "8ab0e3e3c5ebb88a726a3a920842cd7c48fe13f55609e74416955bbe22172da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ab0e3e3c5ebb88a726a3a920842cd7c48fe13f55609e74416955bbe22172da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab0e3e3c5ebb88a726a3a920842cd7c48fe13f55609e74416955bbe22172da5", kill_on_drop: false }`
[INFO] [stdout] 8ab0e3e3c5ebb88a726a3a920842cd7c48fe13f55609e74416955bbe22172da5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] aecaf3b49d06530713e99bf4a1044089e12de45c05563380a2867048d9bf3b73
[INFO] running `Command { std: "docker" "start" "-a" "aecaf3b49d06530713e99bf4a1044089e12de45c05563380a2867048d9bf3b73", kill_on_drop: false }`
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[INFO] [stderr]    Compiling getrandom v0.1.15
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[INFO] [stderr]    Compiling prost-types v0.6.1
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[INFO] [stderr]     Checking sp-finality-tracker v2.0.0
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[INFO] [stderr]     Checking sp-io v2.0.0
[INFO] [stderr]     Checking substrate-prometheus-endpoint v0.8.0
[INFO] [stderr]     Checking sp-application-crypto v2.0.0
[INFO] [stderr]     Checking sp-runtime v2.0.0
[INFO] [stderr]     Checking sp-version v2.0.0
[INFO] [stderr]     Checking frame-support v2.0.0
[INFO] [stderr]     Checking sp-staking v2.0.0
[INFO] [stderr]     Checking sp-authorship v2.0.0
[INFO] [stderr]     Checking sp-consensus-vrf v0.8.0
[INFO] [stderr]     Checking sp-consensus-slots v0.8.0
[INFO] [stderr]     Checking sp-api v2.0.0
[INFO] [stderr]     Checking sp-timestamp v2.0.0
[INFO] [stderr]     Checking sp-session v2.0.0
[INFO] [stderr]     Checking sp-consensus v0.8.0
[INFO] [stderr]     Checking sp-finality-grandpa v2.0.0
[INFO] [stderr]     Checking sp-consensus-babe v0.8.0
[INFO] [stderr]     Checking frame-system v2.0.0
[INFO] [stderr]     Checking frame-benchmarking v2.0.0
[INFO] [stderr]     Checking pallet-authorship v2.0.0
[INFO] [stderr]     Checking pallet-finality-tracker v2.0.0
[INFO] [stderr]     Checking pallet-timestamp v2.0.0
[INFO] [stderr]     Checking pallet-balances v2.0.0
[INFO] [stderr]     Checking pallet-session v2.0.0
[INFO] [stderr]     Checking pallet-offences v2.0.0
[INFO] [stderr]     Checking pallet-babe v2.0.0
[INFO] [stderr]     Checking pallet-im-online v2.0.0
[INFO] [stderr]     Checking pallet-grandpa v2.0.0
[INFO] [stderr]     Checking pallet-staking v2.0.0
[INFO] [stderr]     Checking pallet-offences-benchmarking v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `serde`
[INFO] [stdout]    --> src/mock.rs:98:1
[INFO] [stdout]     |
[INFO] [stdout] 98  | / sp_runtime::impl_opaque_keys! {
[INFO] [stdout] 99  | |     pub struct SessionKeys {
[INFO] [stdout] 100 | |         pub foo: sp_runtime::testing::UintAuthorityId,
[INFO] [stdout] 101 | |     }
[INFO] [stdout] 102 | | }
[INFO] [stdout]     | |_^ can't find crate
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "aecaf3b49d06530713e99bf4a1044089e12de45c05563380a2867048d9bf3b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aecaf3b49d06530713e99bf4a1044089e12de45c05563380a2867048d9bf3b73", kill_on_drop: false }`
[INFO] [stdout] aecaf3b49d06530713e99bf4a1044089e12de45c05563380a2867048d9bf3b73