[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/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ngotchac/eth-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ngotchac/eth-metrics" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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 master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ngotchac/eth-metrics on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "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/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking ngotchac/eth-metrics against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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=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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 96ce8774215f20b6ffd016ddb99392183b87663d4515a740999c2140ce5ba742
[INFO] running `"docker" "start" "-a" "96ce8774215f20b6ffd016ddb99392183b87663d4515a740999c2140ce5ba742"`
[INFO] [stderr]     Checking fs_extra v1.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking h2 v0.1.13
[INFO] [stderr]     Checking tokio-tls v0.2.0
[INFO] [stderr]     Checking jsonrpc-core v8.0.1
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking console v0.7.0
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking ethabi v6.1.0
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking hyper v0.12.16
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking websocket v0.21.1
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking web3 v0.5.0 (https://github.com/tomusdrw/rust-web3#86ca0f14)
[INFO] [stderr]     Checking 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] 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 41.25s
[INFO] running `"docker" "inspect" "96ce8774215f20b6ffd016ddb99392183b87663d4515a740999c2140ce5ba742"`
[INFO] running `"docker" "rm" "-f" "96ce8774215f20b6ffd016ddb99392183b87663d4515a740999c2140ce5ba742"`
[INFO] [stdout] 96ce8774215f20b6ffd016ddb99392183b87663d4515a740999c2140ce5ba742