[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/beta-1.37-6/sources/1.36.0/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/djmitche/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/djmitche/rust-chat" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of djmitche/rust-chat on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/djmitche/rust-chat/Cargo.toml
[INFO] crate djmitche/rust-chat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing djmitche/rust-chat against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/djmitche/rust-chat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 3cf722c4b7360ca9a741ade0ae65fbc0571a8facb17b39fbac1ecde33a5b0e69
[INFO] running `"docker" "start" "-a" "3cf722c4b7360ca9a741ade0ae65fbc0571a8facb17b39fbac1ecde33a5b0e69"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `"docker" "inspect" "3cf722c4b7360ca9a741ade0ae65fbc0571a8facb17b39fbac1ecde33a5b0e69"`
[INFO] running `"docker" "rm" "-f" "3cf722c4b7360ca9a741ade0ae65fbc0571a8facb17b39fbac1ecde33a5b0e69"`
[INFO] [stdout] 3cf722c4b7360ca9a741ade0ae65fbc0571a8facb17b39fbac1ecde33a5b0e69
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/djmitche/rust-chat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 016b32c2c225e4cabd699cc67a06d04af59d18dceafa4f174b981d51c7acc895
[INFO] running `"docker" "start" "-a" "016b32c2c225e4cabd699cc67a06d04af59d18dceafa4f174b981d51c7acc895"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "016b32c2c225e4cabd699cc67a06d04af59d18dceafa4f174b981d51c7acc895"`
[INFO] running `"docker" "rm" "-f" "016b32c2c225e4cabd699cc67a06d04af59d18dceafa4f174b981d51c7acc895"`
[INFO] [stdout] 016b32c2c225e4cabd699cc67a06d04af59d18dceafa4f174b981d51c7acc895
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/djmitche/rust-chat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 973eac4d16ffcd7a77ab636be92698ff7ee3a79c7377d7234a6c0971ea1f576b
[INFO] running `"docker" "start" "-a" "973eac4d16ffcd7a77ab636be92698ff7ee3a79c7377d7234a6c0971ea1f576b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chat-878072907c1006b6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "973eac4d16ffcd7a77ab636be92698ff7ee3a79c7377d7234a6c0971ea1f576b"`
[INFO] running `"docker" "rm" "-f" "973eac4d16ffcd7a77ab636be92698ff7ee3a79c7377d7234a6c0971ea1f576b"`
[INFO] [stdout] 973eac4d16ffcd7a77ab636be92698ff7ee3a79c7377d7234a6c0971ea1f576b