[INFO] updating cached repository https://github.com/jrroman/chatter
[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] 675e24f6a1e99877600bedc7cd55d9b03f69bf2c
[INFO] checking jrroman/chatter against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrroman%2Fchatter" "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/jrroman/chatter on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jrroman/chatter
[INFO] finished tweaking git repo https://github.com/jrroman/chatter
[INFO] tweaked toml for git repo https://github.com/jrroman/chatter written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jrroman/chatter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4089eca09a3ef9a950d2b8ac8913548b1bd31183e770c23a3e7d7c1af7cc7aa9
[INFO] running `"docker" "start" "-a" "4089eca09a3ef9a950d2b8ac8913548b1bd31183e770c23a3e7d7c1af7cc7aa9"`
[INFO] [stderr]     Checking chatter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     handle_client(stream);
[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] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     handle_client(stream);
[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] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "4089eca09a3ef9a950d2b8ac8913548b1bd31183e770c23a3e7d7c1af7cc7aa9"`
[INFO] running `"docker" "rm" "-f" "4089eca09a3ef9a950d2b8ac8913548b1bd31183e770c23a3e7d7c1af7cc7aa9"`
[INFO] [stdout] 4089eca09a3ef9a950d2b8ac8913548b1bd31183e770c23a3e7d7c1af7cc7aa9