Dec 19 20:37:41.807 INFO checking alternately/hangman against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:37:41.807 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:37:42.053 INFO [stdout] 2093ed98f6da47cb0c34b90e7cc1b1be781f564aa1621e3bb7fff14f11d4d048
Dec 19 20:37:42.055 INFO running `"docker" "start" "-a" "2093ed98f6da47cb0c34b90e7cc1b1be781f564aa1621e3bb7fff14f11d4d048"`
Dec 19 20:37:42.534 INFO [stderr]     Checking hangman v0.1.0 (/opt/crater/workdir)
Dec 19 20:37:42.730 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 20:37:42.730 INFO [stderr]   --> src/main.rs:89:30
Dec 19 20:37:42.730 INFO [stderr]    |
Dec 19 20:37:42.730 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 19 20:37:42.730 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:37:42.730 INFO [stderr]    |
Dec 19 20:37:42.730 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:37:42.731 INFO [stderr] 
Dec 19 20:37:42.752 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 20:37:42.752 INFO [stderr]   --> src/main.rs:89:30
Dec 19 20:37:42.752 INFO [stderr]    |
Dec 19 20:37:42.752 INFO [stderr] 89 |             printstring.push((c.clone().to_string()));
Dec 19 20:37:42.752 INFO [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:37:42.752 INFO [stderr]    |
Dec 19 20:37:42.752 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:37:42.752 INFO [stderr] 
Dec 19 20:37:42.796 INFO [stderr] warning: function is never used: `veccombine`
Dec 19 20:37:42.796 INFO [stderr]   --> src/main.rs:64:1
Dec 19 20:37:42.796 INFO [stderr]    |
Dec 19 20:37:42.796 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 19 20:37:42.796 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.796 INFO [stderr]    |
Dec 19 20:37:42.796 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:37:42.796 INFO [stderr] 
Dec 19 20:37:42.804 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:42.804 INFO [stderr]   --> src/main.rs:50:9
Dec 19 20:37:42.804 INFO [stderr]    |
Dec 19 20:37:42.804 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 19 20:37:42.804 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.804 INFO [stderr]    |
Dec 19 20:37:42.804 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:37:42.804 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:42.804 INFO [stderr] 
Dec 19 20:37:42.804 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:42.804 INFO [stderr]    --> src/main.rs:134:5
Dec 19 20:37:42.804 INFO [stderr]     |
Dec 19 20:37:42.804 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 19 20:37:42.804 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.804 INFO [stderr]     |
Dec 19 20:37:42.804 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:42.804 INFO [stderr] 
Dec 19 20:37:42.813 INFO [stderr] warning: function is never used: `veccombine`
Dec 19 20:37:42.814 INFO [stderr]   --> src/main.rs:64:1
Dec 19 20:37:42.814 INFO [stderr]    |
Dec 19 20:37:42.814 INFO [stderr] 64 | fn veccombine(victor: Vec<String>) -> String{
Dec 19 20:37:42.814 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.814 INFO [stderr]    |
Dec 19 20:37:42.814 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:37:42.814 INFO [stderr] 
Dec 19 20:37:42.822 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:42.822 INFO [stderr]   --> src/main.rs:50:9
Dec 19 20:37:42.822 INFO [stderr]    |
Dec 19 20:37:42.822 INFO [stderr] 50 |         io::stdin().read_line(&mut input);
Dec 19 20:37:42.822 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.822 INFO [stderr]    |
Dec 19 20:37:42.822 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:37:42.822 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:42.822 INFO [stderr] 
Dec 19 20:37:42.822 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:37:42.822 INFO [stderr]    --> src/main.rs:134:5
Dec 19 20:37:42.822 INFO [stderr]     |
Dec 19 20:37:42.822 INFO [stderr] 134 |     file.read_to_string(&mut contents);
Dec 19 20:37:42.822 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:37:42.822 INFO [stderr]     |
Dec 19 20:37:42.822 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:37:42.822 INFO [stderr] 
Dec 19 20:37:42.837 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
Dec 19 20:37:43.122 INFO running `"docker" "inspect" "2093ed98f6da47cb0c34b90e7cc1b1be781f564aa1621e3bb7fff14f11d4d048"`
Dec 19 20:37:43.334 INFO running `"docker" "rm" "-f" "2093ed98f6da47cb0c34b90e7cc1b1be781f564aa1621e3bb7fff14f11d4d048"`
Dec 19 20:37:43.516 INFO [stdout] 2093ed98f6da47cb0c34b90e7cc1b1be781f564aa1621e3bb7fff14f11d4d048