[INFO] updating cached repository https://github.com/kevinwilde/chat_server
[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] f8e45c687d8d0e7fbed9842f1c590b3b55703cff
[INFO] checking kevinwilde/chat_server against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinwilde%2Fchat_server" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinwilde/chat_server 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/kevinwilde/chat_server
[INFO] finished tweaking git repo https://github.com/kevinwilde/chat_server
[INFO] tweaked toml for git repo https://github.com/kevinwilde/chat_server written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinwilde/chat_server 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/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] 7e619306a9ee30afac6f9b59c8799795e6cee82efbafbf1784fa01ef7170db30
[INFO] running `"docker" "start" "-a" "7e619306a9ee30afac6f9b59c8799795e6cee82efbafbf1784fa01ef7170db30"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking chat_server v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/roommap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/roommap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `"docker" "inspect" "7e619306a9ee30afac6f9b59c8799795e6cee82efbafbf1784fa01ef7170db30"`
[INFO] running `"docker" "rm" "-f" "7e619306a9ee30afac6f9b59c8799795e6cee82efbafbf1784fa01ef7170db30"`
[INFO] [stdout] 7e619306a9ee30afac6f9b59c8799795e6cee82efbafbf1784fa01ef7170db30