[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-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/djmitche/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/djmitche/rust-chat" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/djmitche/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/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#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of djmitche/rust-chat on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-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-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/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-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking djmitche/rust-chat against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-6/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/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=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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2a29e9a84ff05db12bbc754c58ee6ccaa58e3ce573e0f2c5e3c28397eba72adf
[INFO] running `"docker" "start" "-a" "2a29e9a84ff05db12bbc754c58ee6ccaa58e3ce573e0f2c5e3c28397eba72adf"`
[INFO] [stderr]     Checking chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:75:31
[INFO] [stderr]    |
[INFO] [stderr] 75 |     ) -> (ChatConnection, Box<Future<Item = (), Error = ()>>) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] 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] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:138:27
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn serve(self) -> Box<Future<Item = (), Error = io::Error>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = io::Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:75:31
[INFO] [stderr]    |
[INFO] [stderr] 75 |     ) -> (ChatConnection, Box<Future<Item = (), Error = ()>>) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = ()>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] 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] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:138:27
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn serve(self) -> Box<Future<Item = (), Error = io::Error>> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (), Error = io::Error>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "2a29e9a84ff05db12bbc754c58ee6ccaa58e3ce573e0f2c5e3c28397eba72adf"`
[INFO] running `"docker" "rm" "-f" "2a29e9a84ff05db12bbc754c58ee6ccaa58e3ce573e0f2c5e3c28397eba72adf"`
[INFO] [stdout] 2a29e9a84ff05db12bbc754c58ee6ccaa58e3ce573e0f2c5e3c28397eba72adf