Dec 18 04:09:02.373 INFO checking alternately/hangman against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:09:02.373 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/alternately/hangman:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:09:02.896 INFO [stdout] 808fee98f90a8a2a686ccb63152796cdbe57d33a7d20db12b90febdd4c81d01b
Dec 18 04:09:02.902 INFO running `"docker" "start" "-a" "808fee98f90a8a2a686ccb63152796cdbe57d33a7d20db12b90febdd4c81d01b"`
Dec 18 04:09:03.921 INFO [stderr]     Checking hangman v0.1.0 (/opt/crater/workdir)
Dec 18 04:09:04.131 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 04:09:04.131 INFO [stderr]   --> src/main.rs:89:30
Dec 18 04:09:04.131 INFO [stderr]    |
Dec 18 04:09:04.131 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 18 04:09:04.131 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 04:09:04.131 INFO [stderr]    |
Dec 18 04:09:04.132 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 04:09:04.132 INFO [stderr] 
Dec 18 04:09:04.149 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 04:09:04.149 INFO [stderr]   --> src/main.rs:89:30
Dec 18 04:09:04.149 INFO [stderr]    |
Dec 18 04:09:04.149 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 18 04:09:04.149 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 04:09:04.149 INFO [stderr]    |
Dec 18 04:09:04.149 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 04:09:04.149 INFO [stderr] 
Dec 18 04:09:04.262 INFO [stderr] warning: function is never used: `veccombine`
Dec 18 04:09:04.263 INFO [stderr]   --> src/main.rs:64:1
Dec 18 04:09:04.263 INFO [stderr]    |
Dec 18 04:09:04.263 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 18 04:09:04.263 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.268 INFO [stderr]    |
Dec 18 04:09:04.268 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 04:09:04.268 INFO [stderr] 
Dec 18 04:09:04.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:09:04.278 INFO [stderr]   --> src/main.rs:50:9
Dec 18 04:09:04.278 INFO [stderr]    |
Dec 18 04:09:04.278 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 18 04:09:04.278 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.278 INFO [stderr]    |
Dec 18 04:09:04.278 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:09:04.278 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:09:04.278 INFO [stderr] 
Dec 18 04:09:04.279 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:09:04.279 INFO [stderr]    --> src/main.rs:134:5
Dec 18 04:09:04.279 INFO [stderr]     |
Dec 18 04:09:04.279 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 18 04:09:04.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.279 INFO [stderr]     |
Dec 18 04:09:04.279 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:09:04.279 INFO [stderr] 
Dec 18 04:09:04.311 INFO [stderr] warning: function is never used: `veccombine`
Dec 18 04:09:04.311 INFO [stderr]   --> src/main.rs:64:1
Dec 18 04:09:04.312 INFO [stderr]    |
Dec 18 04:09:04.312 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 18 04:09:04.312 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.312 INFO [stderr]    |
Dec 18 04:09:04.313 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 04:09:04.313 INFO [stderr] 
Dec 18 04:09:04.322 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:09:04.322 INFO [stderr]   --> src/main.rs:50:9
Dec 18 04:09:04.322 INFO [stderr]    |
Dec 18 04:09:04.322 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 18 04:09:04.323 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.324 INFO [stderr]    |
Dec 18 04:09:04.324 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:09:04.324 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:09:04.324 INFO [stderr] 
Dec 18 04:09:04.324 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:09:04.324 INFO [stderr]    --> src/main.rs:134:5
Dec 18 04:09:04.324 INFO [stderr]     |
Dec 18 04:09:04.324 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 18 04:09:04.324 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:09:04.324 INFO [stderr]     |
Dec 18 04:09:04.324 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:09:04.324 INFO [stderr] 
Dec 18 04:09:04.342 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 18 04:09:04.642 INFO running `"docker" "inspect" "808fee98f90a8a2a686ccb63152796cdbe57d33a7d20db12b90febdd4c81d01b"`
Dec 18 04:09:04.751 INFO running `"docker" "rm" "-f" "808fee98f90a8a2a686ccb63152796cdbe57d33a7d20db12b90febdd4c81d01b"`
Dec 18 04:09:04.880 INFO [stdout] 808fee98f90a8a2a686ccb63152796cdbe57d33a7d20db12b90febdd4c81d01b