[INFO] updating cached repository kevinw/eth-rust-workshop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kevinw/eth-rust-workshop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinw/eth-rust-workshop" "work/ex/beta-1.38-1/sources/1.37.0/gh/kevinw/eth-rust-workshop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kevinw/eth-rust-workshop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kevinw/eth-rust-workshop" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kevinw/eth-rust-workshop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kevinw/eth-rust-workshop on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/kevinw/eth-rust-workshop/Cargo.toml
[INFO] crate kevinw/eth-rust-workshop already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kevinw/eth-rust-workshop against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b95950b991b26887d252b521907e568d423dc8ceca03f7d3d436ecdce91c6478
[INFO] running `"docker" "start" "-a" "b95950b991b26887d252b521907e568d423dc8ceca03f7d3d436ecdce91c6478"`
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling rustc-hex v1.0.0
[INFO] [stderr]    Compiling smallvec v0.6.1
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling backtrace-sys v0.1.21
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling uint v0.2.1
[INFO] [stderr]    Compiling ethereum-types v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.62
[INFO] [stderr]    Compiling tiny-keccak v1.4.2
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling fixed-hash v0.2.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.6
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.1.7
[INFO] [stderr]    Compiling websocket v0.20.2
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling ethereum-types-serialize v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.18
[INFO] [stderr]    Compiling ethbloom v0.5.0
[INFO] [stderr]    Compiling jsonrpc-core v8.0.1
[INFO] [stderr]    Compiling hyper-tls v0.1.3
[INFO] [stderr]    Compiling ethabi v5.1.1
[INFO] [stderr]    Compiling web3 v0.3.0
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 2m 28s
[INFO] running `"docker" "inspect" "b95950b991b26887d252b521907e568d423dc8ceca03f7d3d436ecdce91c6478"`
[INFO] running `"docker" "rm" "-f" "b95950b991b26887d252b521907e568d423dc8ceca03f7d3d436ecdce91c6478"`
[INFO] [stdout] b95950b991b26887d252b521907e568d423dc8ceca03f7d3d436ecdce91c6478
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9fb501d202d1c6fcfda92b0e5106746b9d5a27fa2cc31674259a3a137ae19f04
[INFO] running `"docker" "start" "-a" "9fb501d202d1c6fcfda92b0e5106746b9d5a27fa2cc31674259a3a137ae19f04"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `"docker" "inspect" "9fb501d202d1c6fcfda92b0e5106746b9d5a27fa2cc31674259a3a137ae19f04"`
[INFO] running `"docker" "rm" "-f" "9fb501d202d1c6fcfda92b0e5106746b9d5a27fa2cc31674259a3a137ae19f04"`
[INFO] [stdout] 9fb501d202d1c6fcfda92b0e5106746b9d5a27fa2cc31674259a3a137ae19f04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] b994aedff1a52eae5d6d1eddb7c4c3a8a28fc13a828904dffa716e47380aa01f
[INFO] running `"docker" "start" "-a" "b994aedff1a52eae5d6d1eddb7c4c3a8a28fc13a828904dffa716e47380aa01f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ethworkshop-d0042863f99d5a7e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b994aedff1a52eae5d6d1eddb7c4c3a8a28fc13a828904dffa716e47380aa01f"`
[INFO] running `"docker" "rm" "-f" "b994aedff1a52eae5d6d1eddb7c4c3a8a28fc13a828904dffa716e47380aa01f"`
[INFO] [stdout] b994aedff1a52eae5d6d1eddb7c4c3a8a28fc13a828904dffa716e47380aa01f