[INFO] fetching crate pallet-contracts-rpc 0.8.0-rc6...
[INFO] checking pallet-contracts-rpc-0.8.0-rc6 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate pallet-contracts-rpc 0.8.0-rc6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pallet-contracts-rpc 0.8.0-rc6 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pallet-contracts-rpc 0.8.0-rc6
[INFO] finished tweaking crates.io crate pallet-contracts-rpc 0.8.0-rc6
[INFO] tweaked toml for crates.io crate pallet-contracts-rpc 0.8.0-rc6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pallet-contracts-rpc-runtime-api v0.8.0-rc6
[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" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f7b5f4679695de3be4fe00895c4171928b5d060a31c2ffb61cadd1d209fd322
[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" "5f7b5f4679695de3be4fe00895c4171928b5d060a31c2ffb61cadd1d209fd322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f7b5f4679695de3be4fe00895c4171928b5d060a31c2ffb61cadd1d209fd322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f7b5f4679695de3be4fe00895c4171928b5d060a31c2ffb61cadd1d209fd322", kill_on_drop: false }`
[INFO] [stdout] 5f7b5f4679695de3be4fe00895c4171928b5d060a31c2ffb61cadd1d209fd322
[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" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 176960fcf2e2d6901e6682f4be74d968286675c6259d44ec70571902c96ebefc
[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" "176960fcf2e2d6901e6682f4be74d968286675c6259d44ec70571902c96ebefc", kill_on_drop: false }`
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[INFO] [stderr]     Checking pallet-contracts-primitives v2.0.0-rc6
[INFO] [stderr]     Checking sp-api v2.0.0-rc6
[INFO] [stderr]     Checking sp-block-builder v2.0.0-rc6
[INFO] [stderr]     Checking sp-consensus v0.8.0-rc6
[INFO] [stderr]     Checking pallet-contracts-rpc-runtime-api v0.8.0-rc6
[INFO] [stderr]     Checking sp-blockchain v2.0.0-rc6
[INFO] [stderr]     Checking pallet-contracts-rpc v0.8.0-rc6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:300:18
[INFO] [stdout]     |
[INFO] [stdout] 300 |         let req: Req = serde_json::from_str(r#"
[INFO] [stdout]     |                        ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:315:37
[INFO] [stdout]     |
[INFO] [stdout] 315 |             let res: RpcContractExecResult = serde_json::from_str(expected).unwrap();
[INFO] [stdout]     |                                              ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stdout]    --> src/lib.rs:316:17
[INFO] [stdout]     |
[INFO] [stdout] 316 |             let actual = serde_json::to_string(&res).unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^ use of undeclared type 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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "176960fcf2e2d6901e6682f4be74d968286675c6259d44ec70571902c96ebefc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176960fcf2e2d6901e6682f4be74d968286675c6259d44ec70571902c96ebefc", kill_on_drop: false }`
[INFO] [stdout] 176960fcf2e2d6901e6682f4be74d968286675c6259d44ec70571902c96ebefc