[INFO] fetching crate golem-rpc-api 0.2.0...
[INFO] checking golem-rpc-api-0.2.0 against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] extracting crate golem-rpc-api 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate golem-rpc-api 0.2.0 on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate golem-rpc-api 0.2.0
[INFO] finished tweaking crates.io crate golem-rpc-api 0.2.0
[INFO] tweaked toml for crates.io crate golem-rpc-api 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 641fb12c94b35a1f4c2a7f8e3c1f4a4b2bbb8ffc51e9001188ab7a1a055a97d3
[INFO] running `Command { std: "docker" "start" "-a" "641fb12c94b35a1f4c2a7f8e3c1f4a4b2bbb8ffc51e9001188ab7a1a055a97d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "641fb12c94b35a1f4c2a7f8e3c1f4a4b2bbb8ffc51e9001188ab7a1a055a97d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "641fb12c94b35a1f4c2a7f8e3c1f4a4b2bbb8ffc51e9001188ab7a1a055a97d3", kill_on_drop: false }`
[INFO] [stdout] 641fb12c94b35a1f4c2a7f8e3c1f4a4b2bbb8ffc51e9001188ab7a1a055a97d3
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5cdf33124c76eb2c0c69c532169504f4bccc7c697641c70416f544944ee83e2
[INFO] running `Command { std: "docker" "start" "-a" "e5cdf33124c76eb2c0c69c532169504f4bccc7c697641c70416f544944ee83e2", kill_on_drop: false }`
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/settings.rs:155:28
[INFO] [stdout]     |
[INFO] [stdout] 155 |             Ok(S::to_value(Any::downcast_ref(&b).unwrap())?)
[INFO] [stdout]     |                            ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/settings.rs:155:28
[INFO] [stdout]     |
[INFO] [stdout] 155 |             Ok(S::to_value(Any::downcast_ref(&b).unwrap())?)
[INFO] [stdout]     |                            ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/pay.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         let result: (i32, Vec<WalletOperation>) = serde_json::from_str(str).unwrap();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "e5cdf33124c76eb2c0c69c532169504f4bccc7c697641c70416f544944ee83e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5cdf33124c76eb2c0c69c532169504f4bccc7c697641c70416f544944ee83e2", kill_on_drop: false }`
[INFO] [stdout] e5cdf33124c76eb2c0c69c532169504f4bccc7c697641c70416f544944ee83e2