[INFO] crate pallet-elections-phragmen 2.0.0-alpha.5 is already in cache
[INFO] checking pallet-elections-phragmen-2.0.0-alpha.5 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate pallet-elections-phragmen 2.0.0-alpha.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pallet-elections-phragmen 2.0.0-alpha.5 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pallet-elections-phragmen 2.0.0-alpha.5
[INFO] finished tweaking crates.io crate pallet-elections-phragmen 2.0.0-alpha.5
[INFO] tweaked toml for crates.io crate pallet-elections-phragmen 2.0.0-alpha.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 309829c19239dc296ad734ddf1a193d25e0eaecd891758003847089ba700dd84
[INFO] running `"docker" "start" "-a" "309829c19239dc296ad734ddf1a193d25e0eaecd891758003847089ba700dd84"`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking sp-std v2.0.0-alpha.5
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking hash-db v0.15.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking environmental v1.1.1
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]     Checking integer-sqrt v0.1.3
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling sp-debug-derive v2.0.0-alpha.5
[INFO] [stderr]    Compiling derive_more v0.99.5
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]    Compiling frame-support-procedural-tools-derive v2.0.0-alpha.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]     Checking sp-panic-handler v2.0.0-alpha.5
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking trie-root v0.16.0
[INFO] [stderr]     Checking hmac-drbg v0.2.0
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]     Checking impl-serde v0.3.0
[INFO] [stderr]     Checking impl-serde v0.2.3
[INFO] [stderr]     Checking hash256-std-hasher v0.15.2
[INFO] [stderr]     Checking trie-db v0.20.0
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking uint v0.8.2
[INFO] [stderr]     Checking fixed-hash v0.6.0
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking paste v0.1.10
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking merlin v2.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]     Checking tiny-bip39 v0.7.3
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking schnorrkel v0.9.1
[INFO] [stderr]    Compiling frame-support-procedural-tools v2.0.0-alpha.5
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.2.0
[INFO] [stderr]    Compiling sp-runtime-interface-proc-macro v2.0.0-alpha.5
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking sp-storage v2.0.0-alpha.5
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking substrate-bip39 v0.4.1
[INFO] [stderr]     Checking sp-externalities v0.8.0-alpha.5
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]    Compiling frame-support-procedural v2.0.0-alpha.5
[INFO] [stderr]     Checking parity-scale-codec v1.3.0
[INFO] [stderr]     Checking impl-codec v0.4.2
[INFO] [stderr]     Checking sp-wasm-interface v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-arithmetic v2.0.0-alpha.5
[INFO] [stderr]     Checking primitive-types v0.7.0
[INFO] [stderr]     Checking parity-util-mem v0.6.0
[INFO] [stderr]     Checking sp-runtime-interface v2.0.0-alpha.5
[INFO] [stderr]     Checking memory-db v0.20.0
[INFO] [stderr]     Checking sp-core v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-trie v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-inherents v2.0.0-alpha.5
[INFO] [stderr]     Checking frame-metadata v11.0.0-alpha.5
[INFO] [stderr]     Checking sp-state-machine v0.8.0-alpha.5
[INFO] [stderr]     Checking sp-io v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-application-crypto v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-runtime v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-version v2.0.0-alpha.5
[INFO] [stderr]     Checking frame-support v2.0.0-alpha.5
[INFO] [stderr]     Checking sp-phragmen v2.0.0-alpha.5
[INFO] [stderr]     Checking frame-system v2.0.0-alpha.5
[INFO] [stderr]     Checking pallet-elections-phragmen v2.0.0-alpha.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `serde`
[INFO] [stderr]    --> src/lib.rs:985:2
[INFO] [stderr]     |
[INFO] [stderr] 985 |       frame_support::construct_runtime!(
[INFO] [stderr]     |  _____^
[INFO] [stderr] 986 | |         pub enum Test where
[INFO] [stderr] 987 | |             Block = Block,
[INFO] [stderr] 988 | |             NodeBlock = Block,
[INFO] [stderr] ...   |
[INFO] [stderr] 994 | |         }
[INFO] [stderr] 995 | |     );
[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-elections-phragmen`.
[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" "309829c19239dc296ad734ddf1a193d25e0eaecd891758003847089ba700dd84"`
[INFO] running `"docker" "rm" "-f" "309829c19239dc296ad734ddf1a193d25e0eaecd891758003847089ba700dd84"`
[INFO] [stdout] 309829c19239dc296ad734ddf1a193d25e0eaecd891758003847089ba700dd84