Nov 28 08:53:24.454 INFO checking bastikr/wordacademy-solver against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 08:53:24.456 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 08:53:24.984 INFO [stdout] 2795464fd65c5352518a9fe7a8a55509addb56586dde67ca23f094ff60c65f2c
Nov 28 08:53:24.986 INFO running `"docker" "start" "-a" "2795464fd65c5352518a9fe7a8a55509addb56586dde67ca23f094ff60c65f2c"`
Nov 28 08:53:26.388 INFO [stderr] usermod: no changes
Nov 28 08:53:26.481 INFO [stderr]     Checking wordacademy-solver v0.1.0 (/source)
Nov 28 08:53:27.084 INFO [stderr] warning: unused import: `std::collections::HashMap`
Nov 28 08:53:27.084 INFO [stderr]  --> src/chargraph.rs:1:5
Nov 28 08:53:27.084 INFO [stderr]   |
Nov 28 08:53:27.084 INFO [stderr] 1 | use std::collections::HashMap;
Nov 28 08:53:27.084 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.084 INFO [stderr]   |
Nov 28 08:53:27.085 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 08:53:27.085 INFO [stderr] 
Nov 28 08:53:27.236 INFO [stderr] warning: unused import: `Mask`
Nov 28 08:53:27.236 INFO [stderr]    --> src/board.rs:245:29
Nov 28 08:53:27.236 INFO [stderr]     |
Nov 28 08:53:27.236 INFO [stderr] 245 |     use board::{Neighbours, Mask};
Nov 28 08:53:27.236 INFO [stderr]     |                             ^^^^
Nov 28 08:53:27.236 INFO [stderr]     |
Nov 28 08:53:27.236 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Nov 28 08:53:27.236 INFO [stderr] 
Nov 28 08:53:27.236 INFO [stderr] warning: unused import: `std::collections::HashMap`
Nov 28 08:53:27.236 INFO [stderr]  --> src/chargraph.rs:1:5
Nov 28 08:53:27.236 INFO [stderr]   |
Nov 28 08:53:27.236 INFO [stderr] 1 | use std::collections::HashMap;
Nov 28 08:53:27.236 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.236 INFO [stderr] 
Nov 28 08:53:27.588 INFO [stderr] warning: unused variable: `index`
Nov 28 08:53:27.589 INFO [stderr]   --> src/chargraph.rs:73:17
Nov 28 08:53:27.589 INFO [stderr]    |
Nov 28 08:53:27.589 INFO [stderr] 73 |             Err(index) => { panic!("bla") }
Nov 28 08:53:27.590 INFO [stderr]    |                 ^^^^^ help: consider using `_index` instead
Nov 28 08:53:27.590 INFO [stderr]    |
Nov 28 08:53:27.590 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 08:53:27.590 INFO [stderr] 
Nov 28 08:53:27.621 INFO [stderr] warning: unused variable: `graph`
Nov 28 08:53:27.621 INFO [stderr]   --> src/chargraph.rs:97:13
Nov 28 08:53:27.621 INFO [stderr]    |
Nov 28 08:53:27.621 INFO [stderr] 97 |         let graph = CharGraph::from_strings(&words);
Nov 28 08:53:27.621 INFO [stderr]    |             ^^^^^ help: consider using `_graph` instead
Nov 28 08:53:27.621 INFO [stderr]    |
Nov 28 08:53:27.621 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 08:53:27.621 INFO [stderr] 
Nov 28 08:53:27.621 INFO [stderr] warning: unused variable: `index`
Nov 28 08:53:27.621 INFO [stderr]   --> src/chargraph.rs:73:17
Nov 28 08:53:27.621 INFO [stderr]    |
Nov 28 08:53:27.621 INFO [stderr] 73 |             Err(index) => { panic!("bla") }
Nov 28 08:53:27.621 INFO [stderr]    |                 ^^^^^ help: consider using `_index` instead
Nov 28 08:53:27.621 INFO [stderr] 
Nov 28 08:53:27.716 INFO [stderr] warning: function is never used: `writeable`
Nov 28 08:53:27.716 INFO [stderr]    --> src/solver_positional.rs:515:1
Nov 28 08:53:27.716 INFO [stderr]     |
Nov 28 08:53:27.717 INFO [stderr] 515 | fn writeable(word: &str, board: &Board) -> bool {
Nov 28 08:53:27.717 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.717 INFO [stderr]     |
Nov 28 08:53:27.717 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 28 08:53:27.717 INFO [stderr] 
Nov 28 08:53:27.717 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.717 INFO [stderr]   --> src/board.rs:66:9
Nov 28 08:53:27.717 INFO [stderr]    |
Nov 28 08:53:27.718 INFO [stderr] 66 |         writeln!(f);
Nov 28 08:53:27.718 INFO [stderr]    |         ^^^^^^^^^^^^
Nov 28 08:53:27.718 INFO [stderr]    |
Nov 28 08:53:27.718 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 08:53:27.718 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.718 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.718 INFO [stderr] 
Nov 28 08:53:27.719 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.719 INFO [stderr]   --> src/board.rs:68:13
Nov 28 08:53:27.719 INFO [stderr]    |
Nov 28 08:53:27.719 INFO [stderr] 68 |             writeln!(f, "{}", separator);
Nov 28 08:53:27.719 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.719 INFO [stderr]    |
Nov 28 08:53:27.719 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.719 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.720 INFO [stderr] 
Nov 28 08:53:27.720 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.720 INFO [stderr]   --> src/board.rs:70:17
Nov 28 08:53:27.720 INFO [stderr]    |
Nov 28 08:53:27.720 INFO [stderr] 70 |                 write!(f, "|");
Nov 28 08:53:27.720 INFO [stderr]    |                 ^^^^^^^^^^^^^^^
Nov 28 08:53:27.720 INFO [stderr]    |
Nov 28 08:53:27.720 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.721 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.721 INFO [stderr] 
Nov 28 08:53:27.721 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.721 INFO [stderr]   --> src/board.rs:72:21
Nov 28 08:53:27.721 INFO [stderr]    |
Nov 28 08:53:27.721 INFO [stderr] 72 |                     write!(f, "{}", self.get(i, j));
Nov 28 08:53:27.721 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.721 INFO [stderr]    |
Nov 28 08:53:27.722 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.722 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.722 INFO [stderr] 
Nov 28 08:53:27.722 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.722 INFO [stderr]   --> src/board.rs:74:21
Nov 28 08:53:27.722 INFO [stderr]    |
Nov 28 08:53:27.722 INFO [stderr] 74 |                     write!(f, " ");
Nov 28 08:53:27.722 INFO [stderr]    |                     ^^^^^^^^^^^^^^^
Nov 28 08:53:27.723 INFO [stderr]    |
Nov 28 08:53:27.723 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.723 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.723 INFO [stderr] 
Nov 28 08:53:27.723 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.723 INFO [stderr]   --> src/board.rs:77:13
Nov 28 08:53:27.723 INFO [stderr]    |
Nov 28 08:53:27.723 INFO [stderr] 77 |             writeln!(f, "|");
Nov 28 08:53:27.724 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.724 INFO [stderr]    |
Nov 28 08:53:27.724 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.724 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.724 INFO [stderr] 
Nov 28 08:53:27.732 INFO [stderr] warning: function is never used: `writeable`
Nov 28 08:53:27.732 INFO [stderr]    --> src/solver_positional.rs:515:1
Nov 28 08:53:27.733 INFO [stderr]     |
Nov 28 08:53:27.733 INFO [stderr] 515 | fn writeable(word: &str, board: &Board) -> bool {
Nov 28 08:53:27.733 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.733 INFO [stderr]     |
Nov 28 08:53:27.733 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 28 08:53:27.733 INFO [stderr] 
Nov 28 08:53:27.733 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.733 INFO [stderr]   --> src/board.rs:66:9
Nov 28 08:53:27.734 INFO [stderr]    |
Nov 28 08:53:27.734 INFO [stderr] 66 |         writeln!(f);
Nov 28 08:53:27.734 INFO [stderr]    |         ^^^^^^^^^^^^
Nov 28 08:53:27.734 INFO [stderr]    |
Nov 28 08:53:27.734 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 08:53:27.734 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.734 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.734 INFO [stderr] 
Nov 28 08:53:27.735 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.735 INFO [stderr]   --> src/board.rs:68:13
Nov 28 08:53:27.735 INFO [stderr]    |
Nov 28 08:53:27.735 INFO [stderr] 68 |             writeln!(f, "{}", separator);
Nov 28 08:53:27.735 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.735 INFO [stderr]    |
Nov 28 08:53:27.735 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.735 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.735 INFO [stderr] 
Nov 28 08:53:27.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.736 INFO [stderr]   --> src/board.rs:70:17
Nov 28 08:53:27.736 INFO [stderr]    |
Nov 28 08:53:27.736 INFO [stderr] 70 |                 write!(f, "|");
Nov 28 08:53:27.736 INFO [stderr]    |                 ^^^^^^^^^^^^^^^
Nov 28 08:53:27.736 INFO [stderr]    |
Nov 28 08:53:27.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.737 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.737 INFO [stderr] 
Nov 28 08:53:27.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.737 INFO [stderr]   --> src/board.rs:72:21
Nov 28 08:53:27.737 INFO [stderr]    |
Nov 28 08:53:27.737 INFO [stderr] 72 |                     write!(f, "{}", self.get(i, j));
Nov 28 08:53:27.737 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.737 INFO [stderr]    |
Nov 28 08:53:27.738 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.738 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.738 INFO [stderr] 
Nov 28 08:53:27.738 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.738 INFO [stderr]   --> src/board.rs:74:21
Nov 28 08:53:27.738 INFO [stderr]    |
Nov 28 08:53:27.738 INFO [stderr] 74 |                     write!(f, " ");
Nov 28 08:53:27.738 INFO [stderr]    |                     ^^^^^^^^^^^^^^^
Nov 28 08:53:27.738 INFO [stderr]    |
Nov 28 08:53:27.739 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.739 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.739 INFO [stderr] 
Nov 28 08:53:27.739 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:53:27.739 INFO [stderr]   --> src/board.rs:77:13
Nov 28 08:53:27.739 INFO [stderr]    |
Nov 28 08:53:27.739 INFO [stderr] 77 |             writeln!(f, "|");
Nov 28 08:53:27.739 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Nov 28 08:53:27.740 INFO [stderr]    |
Nov 28 08:53:27.740 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:53:27.740 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 08:53:27.740 INFO [stderr] 
Nov 28 08:53:28.481 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
Nov 28 08:53:28.483 INFO [stderr] su: No module specific data is present
Nov 28 08:53:29.572 INFO running `"docker" "inspect" "2795464fd65c5352518a9fe7a8a55509addb56586dde67ca23f094ff60c65f2c"`
Nov 28 08:53:29.913 INFO running `"docker" "rm" "-f" "2795464fd65c5352518a9fe7a8a55509addb56586dde67ca23f094ff60c65f2c"`
Nov 28 08:53:30.316 INFO [stdout] 2795464fd65c5352518a9fe7a8a55509addb56586dde67ca23f094ff60c65f2c