[INFO] updating cached repository djmitche/rust-chat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/djmitche/rust-chat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/djmitche/rust-chat" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/djmitche/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/djmitche/rust-chat" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/djmitche/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a5ac9f928239f5d50e7536a2d9ef003150445aa
[INFO] sha for GitHub repo djmitche/rust-chat: 1a5ac9f928239f5d50e7536a2d9ef003150445aa
[INFO] validating manifest of djmitche/rust-chat on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of djmitche/rust-chat on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing djmitche/rust-chat
[INFO] finished frobbing djmitche/rust-chat
[INFO] frobbed toml for djmitche/rust-chat written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/djmitche/rust-chat/Cargo.toml
[INFO] started frobbing djmitche/rust-chat
[INFO] finished frobbing djmitche/rust-chat
[INFO] frobbed toml for djmitche/rust-chat written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/djmitche/rust-chat/Cargo.toml
[INFO] crate djmitche/rust-chat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking djmitche/rust-chat against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-5/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/djmitche/rust-chat:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6350c6f568bb98e34f48a152703b1ede73814f4d5f3f21b8abf03cf678bf2071
[INFO] running `"docker" "start" "-a" "6350c6f568bb98e34f48a152703b1ede73814f4d5f3f21b8abf03cf678bf2071"`
[INFO] [stderr]     Checking chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:64
[INFO] [stderr]     |
[INFO] [stderr] 103 |             Box::new(writer_fut.select(reader_fut).then(|_| Ok((()))).map(
[INFO] [stderr]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:64
[INFO] [stderr]     |
[INFO] [stderr] 103 |             Box::new(writer_fut.select(reader_fut).then(|_| Ok((()))).map(
[INFO] [stderr]     |                                                                ^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "6350c6f568bb98e34f48a152703b1ede73814f4d5f3f21b8abf03cf678bf2071"`
[INFO] running `"docker" "rm" "-f" "6350c6f568bb98e34f48a152703b1ede73814f4d5f3f21b8abf03cf678bf2071"`
[INFO] [stdout] 6350c6f568bb98e34f48a152703b1ede73814f4d5f3f21b8abf03cf678bf2071