[INFO] fetching crate sc-rpc-api 0.8.0-rc6...
[INFO] checking sc-rpc-api-0.8.0-rc6 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate sc-rpc-api 0.8.0-rc6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate sc-rpc-api 0.8.0-rc6 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sc-rpc-api 0.8.0-rc6
[INFO] finished tweaking crates.io crate sc-rpc-api 0.8.0-rc6
[INFO] tweaked toml for crates.io crate sc-rpc-api 0.8.0-rc6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0e4f8440fe3e3e9467272b0c6019aea7e327b66553dcdef6ea93ff1b47d3ae2
[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" "a0e4f8440fe3e3e9467272b0c6019aea7e327b66553dcdef6ea93ff1b47d3ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0e4f8440fe3e3e9467272b0c6019aea7e327b66553dcdef6ea93ff1b47d3ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0e4f8440fe3e3e9467272b0c6019aea7e327b66553dcdef6ea93ff1b47d3ae2", kill_on_drop: false }`
[INFO] [stdout] a0e4f8440fe3e3e9467272b0c6019aea7e327b66553dcdef6ea93ff1b47d3ae2
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bb58d48d6548aafbcf927c1c9b2f080aa2640fbf6dbcf046c148439c3d08d70
[INFO] running `Command { std: "docker" "start" "-a" "6bb58d48d6548aafbcf927c1c9b2f080aa2640fbf6dbcf046c148439c3d08d70", kill_on_drop: false }`
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[INFO] [stderr]     Checking sc-rpc-api v0.8.0-rc6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `jsonrpc_core::futures::Future`
[INFO] [stdout]   --> src/chain/mod.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use jsonrpc_core::futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `jsonrpc_core::futures::Future`
[INFO] [stdout]   --> src/state/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use jsonrpc_core::futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `jsonrpc_core::futures::Future`
[INFO] [stdout]   --> src/chain/mod.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use jsonrpc_core::futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `jsonrpc_core::futures::Future`
[INFO] [stdout]   --> src/state/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use jsonrpc_core::futures::Future;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 51s
[INFO] running `Command { std: "docker" "inspect" "6bb58d48d6548aafbcf927c1c9b2f080aa2640fbf6dbcf046c148439c3d08d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb58d48d6548aafbcf927c1c9b2f080aa2640fbf6dbcf046c148439c3d08d70", kill_on_drop: false }`
[INFO] [stdout] 6bb58d48d6548aafbcf927c1c9b2f080aa2640fbf6dbcf046c148439c3d08d70