[INFO] cloning repository https://github.com/ngotchac/eth-metrics
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ngotchac/eth-metrics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngotchac%2Feth-metrics"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngotchac%2Feth-metrics'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4e37af16c96d218607611e9f39743bb42e4b57b9
[INFO] checking ngotchac/eth-metrics against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fngotchac%2Feth-metrics" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ngotchac/eth-metrics on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ngotchac/eth-metrics
[INFO] finished tweaking git repo https://github.com/ngotchac/eth-metrics
[INFO] tweaked toml for git repo https://github.com/ngotchac/eth-metrics written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ngotchac/eth-metrics already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f174b50b5a6284eea019fc34e4fa4e80f823b55bf405f4a0e79638e0addbf136
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f174b50b5a6284eea019fc34e4fa4e80f823b55bf405f4a0e79638e0addbf136"`
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking gnuplot v0.0.26
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking openssl v0.10.15
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking console v0.7.0
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking native-tls v0.2.2
[INFO] [stderr]     Checking tokio-tls v0.2.0
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking hyper v0.12.16
[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 jsonrpc-core v8.0.1
[INFO] [stderr]     Checking ethabi v6.1.0
[INFO] [stderr]     Checking web3 v0.5.0 (https://github.com/tomusdrw/rust-web3#86ca0f14)
[INFO] [stderr]     Checking eth-metrics v0.1.0 (/opt/rustwide/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 1m 00s
[INFO] running `"docker" "inspect" "f174b50b5a6284eea019fc34e4fa4e80f823b55bf405f4a0e79638e0addbf136"`
[INFO] running `"docker" "rm" "-f" "f174b50b5a6284eea019fc34e4fa4e80f823b55bf405f4a0e79638e0addbf136"`
[INFO] [stdout] f174b50b5a6284eea019fc34e4fa4e80f823b55bf405f4a0e79638e0addbf136