Dec 19 20:37:42.156 INFO checking alternately/hangman against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:37:42.156 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:37:42.338 INFO [stdout] 09e67c8aa8eea8e8fc091e0dc0d111e79e057c1b87531db9cb1e61e61e93e642
Dec 19 20:37:42.340 INFO running `"docker" "start" "-a" "09e67c8aa8eea8e8fc091e0dc0d111e79e057c1b87531db9cb1e61e61e93e642"`
Dec 19 20:37:43.112 INFO [stderr]     Checking hangman v0.1.0 (/opt/crater/workdir)
Dec 19 20:37:43.321 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 20:37:43.321 INFO [stderr]   --> src/main.rs:89:30
Dec 19 20:37:43.321 INFO [stderr]    |
Dec 19 20:37:43.321 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 19 20:37:43.321 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:37:43.329 INFO [stderr]    |
Dec 19 20:37:43.329 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:37:43.329 INFO [stderr] 
Dec 19 20:37:43.363 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 20:37:43.363 INFO [stderr]   --> src/main.rs:89:30
Dec 19 20:37:43.363 INFO [stderr]    |
Dec 19 20:37:43.363 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 19 20:37:43.363 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:37:43.363 INFO [stderr]    |
Dec 19 20:37:43.363 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:37:43.363 INFO [stderr] 
Dec 19 20:37:43.456 INFO [stderr] warning: function is never used: `veccombine`
Dec 19 20:37:43.456 INFO [stderr]   --> src/main.rs:64:1
Dec 19 20:37:43.456 INFO [stderr]    |
Dec 19 20:37:43.456 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 19 20:37:43.456 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.456 INFO [stderr]    |
Dec 19 20:37:43.456 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:37:43.456 INFO [stderr] 
Dec 19 20:37:43.456 INFO [stderr] warning: function is never used: `veccombine`
Dec 19 20:37:43.456 INFO [stderr]   --> src/main.rs:64:1
Dec 19 20:37:43.456 INFO [stderr]    |
Dec 19 20:37:43.456 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 19 20:37:43.456 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.456 INFO [stderr]    |
Dec 19 20:37:43.456 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:37:43.456 INFO [stderr] 
Dec 19 20:37:43.464 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:43.464 INFO [stderr]   --> src/main.rs:50:9
Dec 19 20:37:43.464 INFO [stderr]    |
Dec 19 20:37:43.464 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 19 20:37:43.465 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.465 INFO [stderr]    |
Dec 19 20:37:43.465 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:37:43.465 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:43.465 INFO [stderr] 
Dec 19 20:37:43.465 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:43.465 INFO [stderr]    --> src/main.rs:134:5
Dec 19 20:37:43.465 INFO [stderr]     |
Dec 19 20:37:43.465 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 19 20:37:43.465 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.465 INFO [stderr]     |
Dec 19 20:37:43.465 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:43.465 INFO [stderr] 
Dec 19 20:37:43.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:43.472 INFO [stderr]   --> src/main.rs:50:9
Dec 19 20:37:43.472 INFO [stderr]    |
Dec 19 20:37:43.472 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 19 20:37:43.472 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.472 INFO [stderr]    |
Dec 19 20:37:43.472 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:37:43.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:43.472 INFO [stderr] 
Dec 19 20:37:43.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:43.472 INFO [stderr]    --> src/main.rs:134:5
Dec 19 20:37:43.472 INFO [stderr]     |
Dec 19 20:37:43.472 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 19 20:37:43.472 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:43.472 INFO [stderr]     |
Dec 19 20:37:43.472 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:43.472 INFO [stderr] 
Dec 19 20:37:43.498 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
Dec 19 20:37:43.729 INFO running `"docker" "inspect" "09e67c8aa8eea8e8fc091e0dc0d111e79e057c1b87531db9cb1e61e61e93e642"`
Dec 19 20:37:43.882 INFO running `"docker" "rm" "-f" "09e67c8aa8eea8e8fc091e0dc0d111e79e057c1b87531db9cb1e61e61e93e642"`
Dec 19 20:37:44.063 INFO [stdout] 09e67c8aa8eea8e8fc091e0dc0d111e79e057c1b87531db9cb1e61e61e93e642