[INFO] fetching crate pallet-contracts-rpc 0.8.0-alpha.6...
[INFO] testing pallet-contracts-rpc-0.8.0-alpha.6 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate pallet-contracts-rpc 0.8.0-alpha.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate pallet-contracts-rpc 0.8.0-alpha.6 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pallet-contracts-rpc 0.8.0-alpha.6
[INFO] finished tweaking crates.io crate pallet-contracts-rpc 0.8.0-alpha.6
[INFO] tweaked toml for crates.io crate pallet-contracts-rpc 0.8.0-alpha.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pallet-contracts-rpc-runtime-api v0.8.0-alpha.6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 12ed1f3f6044f928436421318d1cb9bead1abb9f35d69a0b408c01ef7ff3e0c6
[INFO] running `"docker" "start" "-a" "12ed1f3f6044f928436421318d1cb9bead1abb9f35d69a0b408c01ef7ff3e0c6"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
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[INFO] [stderr]    Compiling sp-panic-handler v2.0.0-alpha.6
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[INFO] [stderr]    Compiling fixed-hash v0.6.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling twox-hash v1.5.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling trie-db v0.20.1
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[INFO] [stderr]    Compiling wasmi v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
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[INFO] [stderr]    Compiling zeroize_derive v1.0.0
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[INFO] [stderr]    Compiling parity-util-mem-derive v0.1.0
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]    Compiling pin-project-internal v0.4.9
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[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling paste v0.1.10
[INFO] [stderr]    Compiling asn1_der v0.6.3
[INFO] [stderr]    Compiling curve25519-dalek v2.0.0
[INFO] [stderr]    Compiling merlin v2.0.0
[INFO] [stderr]    Compiling tiny-bip39 v0.7.3
[INFO] [stderr]    Compiling thiserror v1.0.15
[INFO] [stderr]    Compiling pin-project v0.4.9
[INFO] [stderr]    Compiling ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]    Compiling schnorrkel v0.9.1
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling substrate-bip39 v0.4.1
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling rw-stream-sink v0.2.1
[INFO] [stderr]    Compiling multistream-select v0.8.0
[INFO] [stderr]    Compiling wasm-timer v0.2.4
[INFO] [stderr]    Compiling sp-utils v2.0.0-alpha.6
[INFO] [stderr]    Compiling libp2p-core v0.18.0
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling impl-serde v0.3.0
[INFO] [stderr]    Compiling impl-serde v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling parity-multiaddr v0.8.0
[INFO] [stderr]    Compiling sp-storage v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-externalities v0.8.0-alpha.6
[INFO] [stderr]    Compiling jsonrpc-core v14.1.0
[INFO] [stderr]    Compiling futures-diagnose v1.0.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.2.0
[INFO] [stderr]    Compiling sp-runtime-interface-proc-macro v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-api-proc-macro v2.0.0-alpha.6
[INFO] [stderr]    Compiling jsonrpc-derive v14.0.5
[INFO] [stderr]    Compiling jsonrpc-pubsub v14.1.0
[INFO] [stderr]    Compiling jsonrpc-client-transports v14.1.0
[INFO] [stderr]    Compiling libp2p-swarm v0.18.1
[INFO] [stderr]    Compiling jsonrpc-core-client v14.1.0
[INFO] [stderr]    Compiling parity-scale-codec v1.3.0
[INFO] [stderr]    Compiling libp2p v0.18.1
[INFO] [stderr]    Compiling impl-codec v0.4.2
[INFO] [stderr]    Compiling sp-wasm-interface v2.0.0-alpha.6
[INFO] [stderr]    Compiling primitive-types v0.7.0
[INFO] [stderr]    Compiling sp-runtime-interface v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-arithmetic v2.0.0-alpha.6
[INFO] [stderr]    Compiling memory-db v0.20.1
[INFO] [stderr]    Compiling sp-core v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-trie v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-inherents v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-rpc v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-state-machine v0.8.0-alpha.6
[INFO] [stderr]    Compiling sp-io v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-application-crypto v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-runtime v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-version v2.0.0-alpha.6
[INFO] [stderr]    Compiling pallet-contracts-primitives v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-api v2.0.0-alpha.6
[INFO] [stderr]    Compiling sp-consensus v0.8.0-alpha.6
[INFO] [stderr]    Compiling sp-block-builder v2.0.0-alpha.6
[INFO] [stderr]    Compiling pallet-contracts-rpc-runtime-api v0.8.0-alpha.6
[INFO] [stderr]    Compiling sp-blockchain v2.0.0-alpha.6
[INFO] [stderr]    Compiling pallet-contracts-rpc v0.8.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8m 11s
[INFO] running `"docker" "inspect" "12ed1f3f6044f928436421318d1cb9bead1abb9f35d69a0b408c01ef7ff3e0c6"`
[INFO] running `"docker" "rm" "-f" "12ed1f3f6044f928436421318d1cb9bead1abb9f35d69a0b408c01ef7ff3e0c6"`
[INFO] [stdout] 12ed1f3f6044f928436421318d1cb9bead1abb9f35d69a0b408c01ef7ff3e0c6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8befd50ef0f931b08420458400f46e7f5f0291c5f84962720cf8dd40a63111cf
[INFO] running `"docker" "start" "-a" "8befd50ef0f931b08420458400f46e7f5f0291c5f84962720cf8dd40a63111cf"`
[INFO] [stderr]    Compiling pallet-contracts-rpc v0.8.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/lib.rs:287:37
[INFO] [stderr]     |
[INFO] [stderr] 287 |             let res: RpcContractExecResult = serde_json::from_str(expected).unwrap();
[INFO] [stderr]     |                                              ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/lib.rs:288:17
[INFO] [stderr]     |
[INFO] [stderr] 288 |             let actual = serde_json::to_string(&res).unwrap();
[INFO] [stderr]     |                          ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `pallet-contracts-rpc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8befd50ef0f931b08420458400f46e7f5f0291c5f84962720cf8dd40a63111cf"`
[INFO] running `"docker" "rm" "-f" "8befd50ef0f931b08420458400f46e7f5f0291c5f84962720cf8dd40a63111cf"`
[INFO] [stdout] 8befd50ef0f931b08420458400f46e7f5f0291c5f84962720cf8dd40a63111cf