[INFO] updating cached repository https://github.com/hoodie/peerchat
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] 6e21ac00fe3f41b321192d32d60964db24e016fe
[INFO] checking hoodie/peerchat against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Fpeerchat" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hoodie/peerchat on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hoodie/peerchat
[INFO] finished tweaking git repo https://github.com/hoodie/peerchat
[INFO] tweaked toml for git repo https://github.com/hoodie/peerchat written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/hoodie/peerchat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 531b19020c460d860b89d4c2f16fafb8ef1990e2a9ad35f2c0b3e527183d00d4
[INFO] running `"docker" "start" "-a" "531b19020c460d860b89d4c2f16fafb8ef1990e2a9ad35f2c0b3e527183d00d4"`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking peerchat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> examples/server.rs:56:14
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn broadcast(msg: &str, receivers: &[SocketAddr]) {
[INFO] [stderr]    |              ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receivers`
[INFO] [stderr]   --> examples/server.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn broadcast(msg: &str, receivers: &[SocketAddr]) {
[INFO] [stderr]    |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_receivers`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `broadcast`
[INFO] [stderr]   --> examples/server.rs:56:1
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn broadcast(msg: &str, receivers: &[SocketAddr]) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.10s
[INFO] running `"docker" "inspect" "531b19020c460d860b89d4c2f16fafb8ef1990e2a9ad35f2c0b3e527183d00d4"`
[INFO] running `"docker" "rm" "-f" "531b19020c460d860b89d4c2f16fafb8ef1990e2a9ad35f2c0b3e527183d00d4"`
[INFO] [stdout] 531b19020c460d860b89d4c2f16fafb8ef1990e2a9ad35f2c0b3e527183d00d4