Dec 11 22:00:44.019 INFO checking bastikr/wordacademy-solver against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 22:00:44.019 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 11 22:00:44.363 INFO [stdout] e3cd76f2eddd67ce250f29052eb52cb0f89ff7950f71104507856e796bde7855
Dec 11 22:00:44.366 INFO running `"docker" "start" "-a" "e3cd76f2eddd67ce250f29052eb52cb0f89ff7950f71104507856e796bde7855"`
Dec 11 22:00:44.932 INFO [stderr] usermod: no changes
Dec 11 22:00:44.957 INFO [stderr]     Checking wordacademy-solver v0.1.0 (/source)
Dec 11 22:00:45.238 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 11 22:00:45.238 INFO [stderr]  --> src/chargraph.rs:1:5
Dec 11 22:00:45.238 INFO [stderr]   |
Dec 11 22:00:45.238 INFO [stderr] 1 | use std::collections::HashMap;
Dec 11 22:00:45.238 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.238 INFO [stderr]   |
Dec 11 22:00:45.238 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 22:00:45.238 INFO [stderr] 
Dec 11 22:00:45.380 INFO [stderr] warning: unused import: `Mask`
Dec 11 22:00:45.380 INFO [stderr]    --> src/board.rs:245:29
Dec 11 22:00:45.380 INFO [stderr]     |
Dec 11 22:00:45.380 INFO [stderr] 245 |     use board::{Neighbours, Mask};
Dec 11 22:00:45.380 INFO [stderr]     |                             ^^^^
Dec 11 22:00:45.380 INFO [stderr]     |
Dec 11 22:00:45.380 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 11 22:00:45.380 INFO [stderr] 
Dec 11 22:00:45.380 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 11 22:00:45.380 INFO [stderr]  --> src/chargraph.rs:1:5
Dec 11 22:00:45.380 INFO [stderr]   |
Dec 11 22:00:45.380 INFO [stderr] 1 | use std::collections::HashMap;
Dec 11 22:00:45.380 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.380 INFO [stderr] 
Dec 11 22:00:45.382 INFO [stderr] warning: unused variable: `index`
Dec 11 22:00:45.382 INFO [stderr]   --> src/chargraph.rs:73:17
Dec 11 22:00:45.382 INFO [stderr]    |
Dec 11 22:00:45.382 INFO [stderr] 73 |             Err(index) => { panic!("bla") }
Dec 11 22:00:45.382 INFO [stderr]    |                 ^^^^^ help: consider using `_index` instead
Dec 11 22:00:45.382 INFO [stderr]    |
Dec 11 22:00:45.382 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 22:00:45.382 INFO [stderr] 
Dec 11 22:00:45.448 INFO [stderr] warning: function is never used: `writeable`
Dec 11 22:00:45.448 INFO [stderr]    --> src/solver_positional.rs:515:1
Dec 11 22:00:45.448 INFO [stderr]     |
Dec 11 22:00:45.449 INFO [stderr] 515 | fn writeable(word: &str, board: &Board) -> bool {
Dec 11 22:00:45.449 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.449 INFO [stderr]     |
Dec 11 22:00:45.449 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 22:00:45.449 INFO [stderr] 
Dec 11 22:00:45.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.449 INFO [stderr]   --> src/board.rs:66:9
Dec 11 22:00:45.449 INFO [stderr]    |
Dec 11 22:00:45.449 INFO [stderr] 66 |         writeln!(f);
Dec 11 22:00:45.449 INFO [stderr]    |         ^^^^^^^^^^^^
Dec 11 22:00:45.449 INFO [stderr]    |
Dec 11 22:00:45.449 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 22:00:45.449 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.449 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)
Dec 11 22:00:45.449 INFO [stderr] 
Dec 11 22:00:45.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.449 INFO [stderr]   --> src/board.rs:68:13
Dec 11 22:00:45.449 INFO [stderr]    |
Dec 11 22:00:45.449 INFO [stderr] 68 |             writeln!(f, "{}", separator);
Dec 11 22:00:45.449 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.449 INFO [stderr]    |
Dec 11 22:00:45.449 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.449 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)
Dec 11 22:00:45.449 INFO [stderr] 
Dec 11 22:00:45.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.449 INFO [stderr]   --> src/board.rs:70:17
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr] 70 |                 write!(f, "|");
Dec 11 22:00:45.450 INFO [stderr]    |                 ^^^^^^^^^^^^^^^
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.450 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)
Dec 11 22:00:45.450 INFO [stderr] 
Dec 11 22:00:45.450 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.450 INFO [stderr]   --> src/board.rs:72:21
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr] 72 |                     write!(f, "{}", self.get(i, j));
Dec 11 22:00:45.450 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.450 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)
Dec 11 22:00:45.450 INFO [stderr] 
Dec 11 22:00:45.450 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.450 INFO [stderr]   --> src/board.rs:74:21
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr] 74 |                     write!(f, " ");
Dec 11 22:00:45.450 INFO [stderr]    |                     ^^^^^^^^^^^^^^^
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.450 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)
Dec 11 22:00:45.450 INFO [stderr] 
Dec 11 22:00:45.450 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.450 INFO [stderr]   --> src/board.rs:77:13
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr] 77 |             writeln!(f, "|");
Dec 11 22:00:45.450 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.450 INFO [stderr]    |
Dec 11 22:00:45.450 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.450 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)
Dec 11 22:00:45.450 INFO [stderr] 
Dec 11 22:00:45.570 INFO [stderr] warning: unused variable: `graph`
Dec 11 22:00:45.570 INFO [stderr]   --> src/chargraph.rs:97:13
Dec 11 22:00:45.570 INFO [stderr]    |
Dec 11 22:00:45.570 INFO [stderr] 97 |         let graph = CharGraph::from_strings(&words);
Dec 11 22:00:45.570 INFO [stderr]    |             ^^^^^ help: consider using `_graph` instead
Dec 11 22:00:45.570 INFO [stderr]    |
Dec 11 22:00:45.570 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 22:00:45.570 INFO [stderr] 
Dec 11 22:00:45.570 INFO [stderr] warning: unused variable: `index`
Dec 11 22:00:45.570 INFO [stderr]   --> src/chargraph.rs:73:17
Dec 11 22:00:45.570 INFO [stderr]    |
Dec 11 22:00:45.570 INFO [stderr] 73 |             Err(index) => { panic!("bla") }
Dec 11 22:00:45.589 INFO [stderr]    |                 ^^^^^ help: consider using `_index` instead
Dec 11 22:00:45.589 INFO [stderr] 
Dec 11 22:00:45.651 INFO [stderr] warning: function is never used: `writeable`
Dec 11 22:00:45.651 INFO [stderr]    --> src/solver_positional.rs:515:1
Dec 11 22:00:45.651 INFO [stderr]     |
Dec 11 22:00:45.651 INFO [stderr] 515 | fn writeable(word: &str, board: &Board) -> bool {
Dec 11 22:00:45.651 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.651 INFO [stderr]     |
Dec 11 22:00:45.651 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 22:00:45.651 INFO [stderr] 
Dec 11 22:00:45.651 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.651 INFO [stderr]   --> src/board.rs:66:9
Dec 11 22:00:45.651 INFO [stderr]    |
Dec 11 22:00:45.651 INFO [stderr] 66 |         writeln!(f);
Dec 11 22:00:45.651 INFO [stderr]    |         ^^^^^^^^^^^^
Dec 11 22:00:45.651 INFO [stderr]    |
Dec 11 22:00:45.651 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 22:00:45.651 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.651 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)
Dec 11 22:00:45.651 INFO [stderr] 
Dec 11 22:00:45.651 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.651 INFO [stderr]   --> src/board.rs:68:13
Dec 11 22:00:45.652 INFO [stderr]    |
Dec 11 22:00:45.652 INFO [stderr] 68 |             writeln!(f, "{}", separator);
Dec 11 22:00:45.652 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.652 INFO [stderr]    |
Dec 11 22:00:45.652 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.652 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)
Dec 11 22:00:45.652 INFO [stderr] 
Dec 11 22:00:45.652 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.652 INFO [stderr]   --> src/board.rs:70:17
Dec 11 22:00:45.652 INFO [stderr]    |
Dec 11 22:00:45.652 INFO [stderr] 70 |                 write!(f, "|");
Dec 11 22:00:45.652 INFO [stderr]    |                 ^^^^^^^^^^^^^^^
Dec 11 22:00:45.652 INFO [stderr]    |
Dec 11 22:00:45.652 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.652 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)
Dec 11 22:00:45.652 INFO [stderr] 
Dec 11 22:00:45.652 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.652 INFO [stderr]   --> src/board.rs:72:21
Dec 11 22:00:45.652 INFO [stderr]    |
Dec 11 22:00:45.652 INFO [stderr] 72 |                     write!(f, "{}", self.get(i, j));
Dec 11 22:00:45.668 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.668 INFO [stderr]    |
Dec 11 22:00:45.668 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.668 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)
Dec 11 22:00:45.668 INFO [stderr] 
Dec 11 22:00:45.668 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.669 INFO [stderr]   --> src/board.rs:74:21
Dec 11 22:00:45.669 INFO [stderr]    |
Dec 11 22:00:45.669 INFO [stderr] 74 |                     write!(f, " ");
Dec 11 22:00:45.669 INFO [stderr]    |                     ^^^^^^^^^^^^^^^
Dec 11 22:00:45.669 INFO [stderr]    |
Dec 11 22:00:45.669 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.669 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)
Dec 11 22:00:45.669 INFO [stderr] 
Dec 11 22:00:45.669 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 22:00:45.669 INFO [stderr]   --> src/board.rs:77:13
Dec 11 22:00:45.669 INFO [stderr]    |
Dec 11 22:00:45.669 INFO [stderr] 77 |             writeln!(f, "|");
Dec 11 22:00:45.669 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 22:00:45.669 INFO [stderr]    |
Dec 11 22:00:45.669 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 22:00:45.669 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)
Dec 11 22:00:45.669 INFO [stderr] 
Dec 11 22:00:45.905 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
Dec 11 22:00:45.907 INFO [stderr] su: No module specific data is present
Dec 11 22:00:46.199 INFO running `"docker" "inspect" "e3cd76f2eddd67ce250f29052eb52cb0f89ff7950f71104507856e796bde7855"`
Dec 11 22:00:46.348 INFO running `"docker" "rm" "-f" "e3cd76f2eddd67ce250f29052eb52cb0f89ff7950f71104507856e796bde7855"`
Dec 11 22:00:46.477 INFO [stdout] e3cd76f2eddd67ce250f29052eb52cb0f89ff7950f71104507856e796bde7855