[INFO] updating cached repository gilbertw1/adventure-rust-future-tokio-code
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gilbertw1/adventure-rust-future-tokio-code
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gilbertw1/adventure-rust-future-tokio-code" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/gilbertw1/adventure-rust-future-tokio-code"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/gilbertw1/adventure-rust-future-tokio-code'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gilbertw1/adventure-rust-future-tokio-code" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/gilbertw1/adventure-rust-future-tokio-code"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/gilbertw1/adventure-rust-future-tokio-code'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3231c9284db3c57f3f3cfb42ba7b4b6147b723ec
[INFO] sha for GitHub repo gilbertw1/adventure-rust-future-tokio-code: 3231c9284db3c57f3f3cfb42ba7b4b6147b723ec
[INFO] validating manifest of gilbertw1/adventure-rust-future-tokio-code on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gilbertw1/adventure-rust-future-tokio-code on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gilbertw1/adventure-rust-future-tokio-code
[INFO] finished frobbing gilbertw1/adventure-rust-future-tokio-code
[INFO] frobbed toml for gilbertw1/adventure-rust-future-tokio-code written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/gilbertw1/adventure-rust-future-tokio-code/Cargo.toml
[INFO] started frobbing gilbertw1/adventure-rust-future-tokio-code
[INFO] finished frobbing gilbertw1/adventure-rust-future-tokio-code
[INFO] frobbed toml for gilbertw1/adventure-rust-future-tokio-code written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/gilbertw1/adventure-rust-future-tokio-code/Cargo.toml
[INFO] crate gilbertw1/adventure-rust-future-tokio-code already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gilbertw1/adventure-rust-future-tokio-code against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-7/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/gilbertw1/adventure-rust-future-tokio-code:/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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ff2858155736df49fe49e140cee6478341b8f84ab7fef896608f5f76de28b7e8
[INFO] running `"docker" "start" "-a" "ff2858155736df49fe49e140cee6478341b8f84ab7fef896608f5f76de28b7e8"`
[INFO] [stderr]     Checking http v0.1.10
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking domain v0.2.4
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]     Checking hyper v0.12.9
[INFO] [stderr]     Checking adventure-rust-future-and-tokio-code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let result = self.request_sender.unbounded_send(ReverseLookupRequest { ip: ip, sender: resp_tx });
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         request.sender.send(response);
[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:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         tx.send(resolv);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let result = self.request_sender.unbounded_send(ReverseLookupRequest { ip: ip, sender: resp_tx });
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         request.sender.send(response);
[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:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         tx.send(resolv);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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 17.21s
[INFO] running `"docker" "inspect" "ff2858155736df49fe49e140cee6478341b8f84ab7fef896608f5f76de28b7e8"`
[INFO] running `"docker" "rm" "-f" "ff2858155736df49fe49e140cee6478341b8f84ab7fef896608f5f76de28b7e8"`
[INFO] [stdout] ff2858155736df49fe49e140cee6478341b8f84ab7fef896608f5f76de28b7e8