[INFO] fetching crate pallet-contracts-rpc 3.0.0...
[INFO] checking pallet-contracts-rpc-3.0.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate pallet-contracts-rpc 3.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate pallet-contracts-rpc 3.0.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pallet-contracts-rpc 3.0.0
[INFO] finished tweaking crates.io crate pallet-contracts-rpc 3.0.0
[INFO] tweaked toml for crates.io crate pallet-contracts-rpc 3.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b93001a782678a8c5def21e67a2c8a14b8c38d6e1fa7e7574b11dee4af74f5f
[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" "7b93001a782678a8c5def21e67a2c8a14b8c38d6e1fa7e7574b11dee4af74f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b93001a782678a8c5def21e67a2c8a14b8c38d6e1fa7e7574b11dee4af74f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b93001a782678a8c5def21e67a2c8a14b8c38d6e1fa7e7574b11dee4af74f5f", kill_on_drop: false }`
[INFO] [stdout] 7b93001a782678a8c5def21e67a2c8a14b8c38d6e1fa7e7574b11dee4af74f5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 422c1a7d819293111efef7f7e7d787cb4404ce840130eb30b5ab88b280ea609d
[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" "422c1a7d819293111efef7f7e7d787cb4404ce840130eb30b5ab88b280ea609d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
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[INFO] [stderr]     Checking substrate-bip39 v0.4.2
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[INFO] [stderr]     Checking tracing-subscriber v0.2.19
[INFO] [stderr]     Checking jsonrpc-core v15.1.0
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking jsonrpc-pubsub v15.1.0
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking jsonrpc-client-transports v15.1.0
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[INFO] [stderr]     Checking sp-core v3.0.0
[INFO] [stderr]     Checking sp-trie v3.0.0
[INFO] [stderr]     Checking sp-keystore v0.9.0
[INFO] [stderr]     Checking sp-inherents v3.0.0
[INFO] [stderr]     Checking sp-rpc v3.0.0
[INFO] [stderr]     Checking sp-state-machine v0.9.0
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[INFO] [stderr]     Checking sp-application-crypto v3.0.0
[INFO] [stderr]     Checking sp-runtime v3.0.0
[INFO] [stderr]     Checking sp-version v3.0.0
[INFO] [stderr]     Checking pallet-contracts-primitives v3.0.0
[INFO] [stderr]     Checking sp-api v3.0.0
[INFO] [stderr]     Checking sp-consensus v0.9.0
[INFO] [stderr]     Checking pallet-contracts-rpc-runtime-api v3.0.0
[INFO] [stderr]     Checking sp-blockchain v3.0.0
[INFO] [stderr]     Checking pallet-contracts-rpc v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:316:18
[INFO] [stdout]     |
[INFO] [stdout] 316 |         let req: Req = serde_json::from_str(r#"
[INFO] [stdout]     |                        ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:332:37
[INFO] [stdout]     |
[INFO] [stdout] 332 |             let res: RpcContractExecResult = serde_json::from_str(expected).unwrap();
[INFO] [stdout]     |                                              ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:333:17
[INFO] [stdout]     |
[INFO] [stdout] 333 |             let actual = serde_json::to_string(&res).unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pallet-contracts-rpc` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "422c1a7d819293111efef7f7e7d787cb4404ce840130eb30b5ab88b280ea609d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "422c1a7d819293111efef7f7e7d787cb4404ce840130eb30b5ab88b280ea609d", kill_on_drop: false }`
[INFO] [stdout] 422c1a7d819293111efef7f7e7d787cb4404ce840130eb30b5ab88b280ea609d