[INFO] updating cached repository ngotchac/eth-metrics
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ngotchac/eth-metrics
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ngotchac/eth-metrics" "work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ngotchac/eth-metrics" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ngotchac/eth-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4e37af16c96d218607611e9f39743bb42e4b57b9
[INFO] sha for GitHub repo ngotchac/eth-metrics: 4e37af16c96d218607611e9f39743bb42e4b57b9
[INFO] validating manifest of ngotchac/eth-metrics 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 ngotchac/eth-metrics 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 ngotchac/eth-metrics
[INFO] finished frobbing ngotchac/eth-metrics
[INFO] frobbed toml for ngotchac/eth-metrics written to work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics/Cargo.toml
[INFO] started frobbing ngotchac/eth-metrics
[INFO] finished frobbing ngotchac/eth-metrics
[INFO] frobbed toml for ngotchac/eth-metrics written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ngotchac/eth-metrics/Cargo.toml
[INFO] crate ngotchac/eth-metrics 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] testing ngotchac/eth-metrics 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics:/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] 9916b38a7ae2b6e12385d80f769388a6973200c5826e023f87638639975ecc48
[INFO] running `"docker" "start" "-a" "9916b38a7ae2b6e12385d80f769388a6973200c5826e023f87638639975ecc48"`
[INFO] [stderr]    Compiling gnuplot v0.0.26
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling clicolors-control v0.3.0
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.39
[INFO] [stderr]    Compiling ethereum-types-serialize v0.2.1
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling statrs v0.10.0
[INFO] [stderr]    Compiling fixed-hash v0.2.5
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling hyper v0.10.15
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling tokio-io v0.1.10
[INFO] [stderr]    Compiling ethbloom v0.5.0
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling ethereum-types v0.4.0
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling h2 v0.1.13
[INFO] [stderr]    Compiling crossbeam-deque v0.6.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.7
[INFO] [stderr]    Compiling console v0.7.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.9
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling tokio-tls v0.2.0
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling indicatif v0.9.0
[INFO] [stderr]    Compiling tokio v0.1.13
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling hyper v0.12.16
[INFO] [stderr]    Compiling websocket v0.21.1
[INFO] [stderr]    Compiling tokio-uds v0.1.7
[INFO] [stderr]    Compiling jsonrpc-core v8.0.1
[INFO] [stderr]    Compiling ethabi v6.1.0
[INFO] [stderr]    Compiling hyper-tls v0.3.1
[INFO] [stderr]    Compiling web3 v0.5.0 (https://github.com/tomusdrw/rust-web3#86ca0f14)
[INFO] [stderr]    Compiling eth-metrics v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/runner.rs:335:3
[INFO] [stderr]     |
[INFO] [stderr] 335 |         write!(file, "{}", result);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `"docker" "inspect" "9916b38a7ae2b6e12385d80f769388a6973200c5826e023f87638639975ecc48"`
[INFO] running `"docker" "rm" "-f" "9916b38a7ae2b6e12385d80f769388a6973200c5826e023f87638639975ecc48"`
[INFO] [stdout] 9916b38a7ae2b6e12385d80f769388a6973200c5826e023f87638639975ecc48
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics:/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] 3f2a91ff35ab98f272580141171c456d3e608ccf5bab8d14866475645a8be7e2
[INFO] running `"docker" "start" "-a" "3f2a91ff35ab98f272580141171c456d3e608ccf5bab8d14866475645a8be7e2"`
[INFO] [stderr]    Compiling eth-metrics v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/runner.rs:335:3
[INFO] [stderr]     |
[INFO] [stderr] 335 |         write!(file, "{}", result);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `"docker" "inspect" "3f2a91ff35ab98f272580141171c456d3e608ccf5bab8d14866475645a8be7e2"`
[INFO] running `"docker" "rm" "-f" "3f2a91ff35ab98f272580141171c456d3e608ccf5bab8d14866475645a8be7e2"`
[INFO] [stdout] 3f2a91ff35ab98f272580141171c456d3e608ccf5bab8d14866475645a8be7e2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ngotchac/eth-metrics:/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] 03e1d1e30ff87d8b436f21b2a611ba029b27b36e8f9edf6a1f51b222b8fa5dd2
[INFO] running `"docker" "start" "-a" "03e1d1e30ff87d8b436f21b2a611ba029b27b36e8f9edf6a1f51b222b8fa5dd2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/eth_metrics-cc75fceef72a62c8
[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" "03e1d1e30ff87d8b436f21b2a611ba029b27b36e8f9edf6a1f51b222b8fa5dd2"`
[INFO] running `"docker" "rm" "-f" "03e1d1e30ff87d8b436f21b2a611ba029b27b36e8f9edf6a1f51b222b8fa5dd2"`
[INFO] [stdout] 03e1d1e30ff87d8b436f21b2a611ba029b27b36e8f9edf6a1f51b222b8fa5dd2