[INFO] fetching crate sp-rpc 3.0.0...
[INFO] testing sp-rpc-3.0.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate sp-rpc 3.0.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate sp-rpc 3.0.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sp-rpc 3.0.0
[INFO] finished tweaking crates.io crate sp-rpc 3.0.0
[INFO] tweaked toml for crates.io crate sp-rpc 3.0.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aea26e44fe2a664eb27f43a645a232e9cff9ab9b77d2f9e39846100e7333392f
[INFO] running `Command { std: "docker" "start" "-a" "aea26e44fe2a664eb27f43a645a232e9cff9ab9b77d2f9e39846100e7333392f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aea26e44fe2a664eb27f43a645a232e9cff9ab9b77d2f9e39846100e7333392f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea26e44fe2a664eb27f43a645a232e9cff9ab9b77d2f9e39846100e7333392f", kill_on_drop: false }`
[INFO] [stdout] aea26e44fe2a664eb27f43a645a232e9cff9ab9b77d2f9e39846100e7333392f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d8f1dced85ea47a92de3011d2cd435621186ece8cd28ce8edc401152cc5c707
[INFO] running `Command { std: "docker" "start" "-a" "7d8f1dced85ea47a92de3011d2cd435621186ece8cd28ce8edc401152cc5c707", kill_on_drop: false }`
[INFO] [stderr]    Compiling parity-util-mem v0.9.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tiny-bip39 v0.8.0
[INFO] [stderr]    Compiling tracing-subscriber v0.2.19
[INFO] [stderr]    Compiling sp-tracing v3.0.0
[INFO] [stderr]    Compiling sp-runtime-interface v3.0.0
[INFO] [stderr]    Compiling sp-core v3.0.0
[INFO] [stderr]    Compiling sp-rpc v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.64s
[INFO] running `Command { std: "docker" "inspect" "7d8f1dced85ea47a92de3011d2cd435621186ece8cd28ce8edc401152cc5c707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d8f1dced85ea47a92de3011d2cd435621186ece8cd28ce8edc401152cc5c707", kill_on_drop: false }`
[INFO] [stdout] 7d8f1dced85ea47a92de3011d2cd435621186ece8cd28ce8edc401152cc5c707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c12619a144c83e31d7b346df9d8ea176c624275016a8e71b709d1c121c0e013
[INFO] running `Command { std: "docker" "start" "-a" "8c12619a144c83e31d7b346df9d8ea176c624275016a8e71b709d1c121c0e013", kill_on_drop: false }`
[INFO] [stderr]    Compiling sp-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:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |         serde_json::from_str::<T>(s).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:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |         serde_json::to_string(&expected).unwrap(),
[INFO] [stdout]    |         ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `sp-rpc` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "8c12619a144c83e31d7b346df9d8ea176c624275016a8e71b709d1c121c0e013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c12619a144c83e31d7b346df9d8ea176c624275016a8e71b709d1c121c0e013", kill_on_drop: false }`
[INFO] [stdout] 8c12619a144c83e31d7b346df9d8ea176c624275016a8e71b709d1c121c0e013
