[INFO] fetching crate block-toolbox 0.2.0...
[INFO] building block-toolbox-0.2.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate block-toolbox 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate block-toolbox 0.2.0
[INFO] finished tweaking crates.io crate block-toolbox 0.2.0
[INFO] tweaked toml for crates.io crate block-toolbox 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate block-toolbox 0.2.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate block-toolbox 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d5340f4f7bf67e63316c355bbc3fa3262e35eff4a6041962a17180b030ca2c2
[INFO] running `Command { std: "docker" "start" "-a" "1d5340f4f7bf67e63316c355bbc3fa3262e35eff4a6041962a17180b030ca2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d5340f4f7bf67e63316c355bbc3fa3262e35eff4a6041962a17180b030ca2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5340f4f7bf67e63316c355bbc3fa3262e35eff4a6041962a17180b030ca2c2", kill_on_drop: false }`
[INFO] [stdout] 1d5340f4f7bf67e63316c355bbc3fa3262e35eff4a6041962a17180b030ca2c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d977071582d9d954803f2118b1742b8eb0da7893430c8b1aeb9fde576e65734
[INFO] running `Command { std: "docker" "start" "-a" "1d977071582d9d954803f2118b1742b8eb0da7893430c8b1aeb9fde576e65734", kill_on_drop: false }`
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[INFO] [stderr]    Compiling impl-codec v0.5.1
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[INFO] [stderr]    Compiling ethereum-types v0.11.0
[INFO] [stderr]    Compiling ethabi v14.1.0
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.9
[INFO] [stderr]    Compiling web3 v0.17.0
[INFO] [stderr]    Compiling block-toolbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]  --> src/config.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Config {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Chain` is never constructed
[INFO] [stdout]  --> src/config.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Chain {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] running `Command { std: "docker" "inspect" "1d977071582d9d954803f2118b1742b8eb0da7893430c8b1aeb9fde576e65734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d977071582d9d954803f2118b1742b8eb0da7893430c8b1aeb9fde576e65734", kill_on_drop: false }`
[INFO] [stdout] 1d977071582d9d954803f2118b1742b8eb0da7893430c8b1aeb9fde576e65734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d60cd5ea0e897ae0cceb4663b24445fdf19a5809905a571d2c03fcff73eab65
[INFO] running `Command { std: "docker" "start" "-a" "5d60cd5ea0e897ae0cceb4663b24445fdf19a5809905a571d2c03fcff73eab65", kill_on_drop: false }`
[INFO] [stderr]    Compiling block-toolbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]  --> src/config.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Config {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Chain` is never constructed
[INFO] [stdout]  --> src/config.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Chain {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> examples/balance.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "5d60cd5ea0e897ae0cceb4663b24445fdf19a5809905a571d2c03fcff73eab65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d60cd5ea0e897ae0cceb4663b24445fdf19a5809905a571d2c03fcff73eab65", kill_on_drop: false }`
[INFO] [stdout] 5d60cd5ea0e897ae0cceb4663b24445fdf19a5809905a571d2c03fcff73eab65