[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-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/ngotchac/eth-metrics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ngotchac/eth-metrics" "work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/ngotchac/eth-metrics"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/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#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ngotchac/eth-metrics on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-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-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/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-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/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" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ngotchac/eth-metrics against try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af for pr-61753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61753/worker-6/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/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" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8c686409c27f90c1a9931d2adb208e0fcdcda53b65325036bdc53b351f67f2f8
[INFO] running `"docker" "start" "-a" "8c686409c27f90c1a9931d2adb208e0fcdcda53b65325036bdc53b351f67f2f8"`
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking fs_extra v1.1.0
[INFO] [stderr]     Checking gnuplot v0.0.26
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v0.3.0
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking rand v0.6.1
[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 parking_lot v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking console v0.7.0
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking hyper v0.12.16
[INFO] [stderr]     Checking ethabi v6.1.0
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]     Checking websocket v0.21.1
[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 41.11s
[INFO] running `"docker" "inspect" "8c686409c27f90c1a9931d2adb208e0fcdcda53b65325036bdc53b351f67f2f8"`
[INFO] running `"docker" "rm" "-f" "8c686409c27f90c1a9931d2adb208e0fcdcda53b65325036bdc53b351f67f2f8"`
[INFO] [stdout] 8c686409c27f90c1a9931d2adb208e0fcdcda53b65325036bdc53b351f67f2f8