[INFO] cloning repository kevinw/eth-rust-workshop
[INFO] running `"git" "clone" "--bare" "git://github.com/kevinw/eth-rust-workshop.git" "work/cache/sources/gh/kevinw/eth-rust-workshop"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/kevinw/eth-rust-workshop'...
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinw/eth-rust-workshop" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kevinw/eth-rust-workshop"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kevinw/eth-rust-workshop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinw/eth-rust-workshop" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kevinw/eth-rust-workshop"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kevinw/eth-rust-workshop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e6aec89529bb6b9d132127cf08997320ba798f04
[INFO] sha for GitHub repo kevinw/eth-rust-workshop: e6aec89529bb6b9d132127cf08997320ba798f04
[INFO] validating manifest of kevinw/eth-rust-workshop on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kevinw/eth-rust-workshop on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kevinw/eth-rust-workshop
[INFO] finished frobbing kevinw/eth-rust-workshop
[INFO] frobbed toml for kevinw/eth-rust-workshop written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kevinw/eth-rust-workshop/Cargo.toml
[INFO] started frobbing kevinw/eth-rust-workshop
[INFO] finished frobbing kevinw/eth-rust-workshop
[INFO] frobbed toml for kevinw/eth-rust-workshop written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/kevinw/eth-rust-workshop/Cargo.toml
[INFO] crate kevinw/eth-rust-workshop has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kevinw/eth-rust-workshop against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-1/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/kevinw/eth-rust-workshop:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c7180dc56596519ca3d1b2cdab2e945afabf89cd2e4bb32bd760c2d0f9442b9a
[INFO] running `"docker" "start" "-a" "c7180dc56596519ca3d1b2cdab2e945afabf89cd2e4bb32bd760c2d0f9442b9a"`
[INFO] [stderr]     Blocking waiting for file lock on the registry index
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling uint v0.2.1
[INFO] [stderr]    Compiling ethereum-types v0.3.2
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking fixed-hash v0.2.1
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling serde_derive v1.0.62
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]     Checking websocket v0.20.2
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking serde_json v1.0.18
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking hyper-tls v0.1.3
[INFO] [stderr]     Checking jsonrpc-core v8.0.1
[INFO] [stderr]     Checking ethabi v5.1.1
[INFO] [stderr]     Checking web3 v0.3.0
[INFO] [stderr]     Checking ethworkshop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address_str`
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let address_str = line.clone();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_address_str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address_str`
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let address_str = line.clone();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_address_str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `"docker" "inspect" "c7180dc56596519ca3d1b2cdab2e945afabf89cd2e4bb32bd760c2d0f9442b9a"`
[INFO] running `"docker" "rm" "-f" "c7180dc56596519ca3d1b2cdab2e945afabf89cd2e4bb32bd760c2d0f9442b9a"`
[INFO] [stdout] c7180dc56596519ca3d1b2cdab2e945afabf89cd2e4bb32bd760c2d0f9442b9a