[INFO] updating cached repository https://github.com/HirotoShioi/nano_chain
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4c6615c381d15b85f625b53f6a140ccd76f449fc
[INFO] checking HirotoShioi/nano_chain against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHirotoShioi%2Fnano_chain" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HirotoShioi/nano_chain on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/HirotoShioi/nano_chain
[INFO] finished tweaking git repo https://github.com/HirotoShioi/nano_chain
[INFO] tweaked toml for git repo https://github.com/HirotoShioi/nano_chain written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/HirotoShioi/nano_chain already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 27c1dae4c425568bbf23f7509d69fe6d7e656c4dd4f6c01ca8ce3842d9aed7ea
[INFO] running `"docker" "start" "-a" "27c1dae4c425568bbf23f7509d69fe6d7e656c4dd4f6c01ca8ce3842d9aed7ea"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking chrono v0.4.8
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking serde v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking nano_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `recv`
[INFO] [stderr]   --> src/peer_discovery/util.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn recv(&self) -> Result<ChanMessage<T>, RecvError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `recv`
[INFO] [stderr]   --> src/peer_discovery/util.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn recv(&self) -> Result<ChanMessage<T>, RecvError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.42s
[INFO] running `"docker" "inspect" "27c1dae4c425568bbf23f7509d69fe6d7e656c4dd4f6c01ca8ce3842d9aed7ea"`
[INFO] running `"docker" "rm" "-f" "27c1dae4c425568bbf23f7509d69fe6d7e656c4dd4f6c01ca8ce3842d9aed7ea"`
[INFO] [stdout] 27c1dae4c425568bbf23f7509d69fe6d7e656c4dd4f6c01ca8ce3842d9aed7ea