Nov 30 12:14:30.482 INFO checking Aehmlo/advent-of-code against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 12:14:30.483 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 12:14:30.744 INFO [stdout] 0945699c5dc809a0d2f10e2ce12e45a92ab2662e43d53ff5dd75564511cace4b
Nov 30 12:14:30.752 INFO running `"docker" "start" "-a" "0945699c5dc809a0d2f10e2ce12e45a92ab2662e43d53ff5dd75564511cace4b"`
Nov 30 12:14:31.448 INFO [stderr] usermod: no changes
Nov 30 12:14:31.642 INFO [stderr]     Checking primal-check v0.2.2
Nov 30 12:14:32.988 INFO [stderr]     Checking primal v0.2.3
Nov 30 12:14:34.169 INFO [stderr]     Checking advent-of-code v0.1.0 (/source)
Nov 30 12:14:37.297 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.297 INFO [stderr]   --> src/solutions/eight.rs:26:7
Nov 30 12:14:37.297 INFO [stderr]    |
Nov 30 12:14:37.297 INFO [stderr] 26 |         let mut registers = &mut self.registers;
Nov 30 12:14:37.297 INFO [stderr]    |             ----^^^^^^^^^
Nov 30 12:14:37.297 INFO [stderr]    |             |
Nov 30 12:14:37.297 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.297 INFO [stderr]    |
Nov 30 12:14:37.297 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 12:14:37.297 INFO [stderr] 
Nov 30 12:14:37.336 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.336 INFO [stderr]   --> src/solutions/ten.rs:31:7
Nov 30 12:14:37.336 INFO [stderr]    |
Nov 30 12:14:37.336 INFO [stderr] 31 |         let mut n = &mut self.nodes;
Nov 30 12:14:37.336 INFO [stderr]    |             ----^
Nov 30 12:14:37.336 INFO [stderr]    |             |
Nov 30 12:14:37.336 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.336 INFO [stderr] 
Nov 30 12:14:37.560 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.560 INFO [stderr]   --> src/solutions/eight.rs:26:7
Nov 30 12:14:37.560 INFO [stderr]    |
Nov 30 12:14:37.560 INFO [stderr] 26 |         let mut registers = &mut self.registers;
Nov 30 12:14:37.560 INFO [stderr]    |             ----^^^^^^^^^
Nov 30 12:14:37.560 INFO [stderr]    |             |
Nov 30 12:14:37.560 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.560 INFO [stderr]    |
Nov 30 12:14:37.560 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 12:14:37.560 INFO [stderr] 
Nov 30 12:14:37.560 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.560 INFO [stderr]    --> src/solutions/twenty.rs:116:7
Nov 30 12:14:37.560 INFO [stderr]     |
Nov 30 12:14:37.560 INFO [stderr] 116 |         let mut particles = &mut self.particles;
Nov 30 12:14:37.560 INFO [stderr]     |             ----^^^^^^^^^
Nov 30 12:14:37.560 INFO [stderr]     |             |
Nov 30 12:14:37.560 INFO [stderr]     |             help: remove this `mut`
Nov 30 12:14:37.560 INFO [stderr] 
Nov 30 12:14:37.568 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.568 INFO [stderr]   --> src/solutions/ten.rs:31:7
Nov 30 12:14:37.568 INFO [stderr]    |
Nov 30 12:14:37.568 INFO [stderr] 31 |         let mut n = &mut self.nodes;
Nov 30 12:14:37.568 INFO [stderr]    |             ----^
Nov 30 12:14:37.568 INFO [stderr]    |             |
Nov 30 12:14:37.568 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.568 INFO [stderr] 
Nov 30 12:14:37.612 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.612 INFO [stderr]   --> src/solutions/twenty_one.rs:50:7
Nov 30 12:14:37.612 INFO [stderr]    |
Nov 30 12:14:37.612 INFO [stderr] 50 |         let mut data = &mut self.data;
Nov 30 12:14:37.612 INFO [stderr]    |             ----^^^^
Nov 30 12:14:37.612 INFO [stderr]    |             |
Nov 30 12:14:37.612 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.612 INFO [stderr] 
Nov 30 12:14:37.665 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.665 INFO [stderr]    --> src/solutions/twenty.rs:116:7
Nov 30 12:14:37.665 INFO [stderr]     |
Nov 30 12:14:37.665 INFO [stderr] 116 |         let mut particles = &mut self.particles;
Nov 30 12:14:37.665 INFO [stderr]     |             ----^^^^^^^^^
Nov 30 12:14:37.665 INFO [stderr]     |             |
Nov 30 12:14:37.665 INFO [stderr]     |             help: remove this `mut`
Nov 30 12:14:37.665 INFO [stderr] 
Nov 30 12:14:37.675 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:14:37.675 INFO [stderr]   --> src/solutions/twenty_one.rs:50:7
Nov 30 12:14:37.675 INFO [stderr]    |
Nov 30 12:14:37.675 INFO [stderr] 50 |         let mut data = &mut self.data;
Nov 30 12:14:37.675 INFO [stderr]    |             ----^^^^
Nov 30 12:14:37.675 INFO [stderr]    |             |
Nov 30 12:14:37.675 INFO [stderr]    |             help: remove this `mut`
Nov 30 12:14:37.675 INFO [stderr] 
Nov 30 12:14:37.772 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.773 INFO [stderr]  --> src/solutions/six.rs:4:1
Nov 30 12:14:37.776 INFO [stderr]   |
Nov 30 12:14:37.776 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.776 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.776 INFO [stderr]   |
Nov 30 12:14:37.776 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 12:14:37.776 INFO [stderr] 
Nov 30 12:14:37.776 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.776 INFO [stderr]  --> src/solutions/seven.rs:4:1
Nov 30 12:14:37.776 INFO [stderr]   |
Nov 30 12:14:37.776 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.776 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.776 INFO [stderr] 
Nov 30 12:14:37.776 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.776 INFO [stderr]  --> src/solutions/eight.rs:4:1
Nov 30 12:14:37.776 INFO [stderr]   |
Nov 30 12:14:37.776 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.776 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.777 INFO [stderr] 
Nov 30 12:14:37.777 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.777 INFO [stderr]   --> src/solutions/nine.rs:53:1
Nov 30 12:14:37.777 INFO [stderr]    |
Nov 30 12:14:37.777 INFO [stderr] 53 | pub struct Solution { }
Nov 30 12:14:37.777 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.777 INFO [stderr] 
Nov 30 12:14:37.777 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.777 INFO [stderr]  --> src/solutions/ten.rs:3:1
Nov 30 12:14:37.777 INFO [stderr]   |
Nov 30 12:14:37.777 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.777 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.777 INFO [stderr] 
Nov 30 12:14:37.777 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.777 INFO [stderr]  --> src/solutions/eleven.rs:4:1
Nov 30 12:14:37.777 INFO [stderr]   |
Nov 30 12:14:37.777 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.777 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.777 INFO [stderr] 
Nov 30 12:14:37.777 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.777 INFO [stderr]  --> src/solutions/twelve.rs:5:1
Nov 30 12:14:37.777 INFO [stderr]   |
Nov 30 12:14:37.777 INFO [stderr] 5 | pub struct Solution { }
Nov 30 12:14:37.777 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.777 INFO [stderr] 
Nov 30 12:14:37.784 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.785 INFO [stderr]  --> src/solutions/thirteen.rs:4:1
Nov 30 12:14:37.785 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/fourteen.rs:4:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/fifteen.rs:3:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/sixteen.rs:3:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/seventeen.rs:3:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/eighteen.rs:6:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 6 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/nineteen.rs:3:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]   --> src/solutions/twenty.rs:12:1
Nov 30 12:14:37.786 INFO [stderr]    |
Nov 30 12:14:37.786 INFO [stderr] 12 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/twenty_one.rs:6:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 6 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]  --> src/solutions/twenty_two.rs:4:1
Nov 30 12:14:37.786 INFO [stderr]   |
Nov 30 12:14:37.786 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.786 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.786 INFO [stderr]    --> src/solutions/twenty_three.rs:161:1
Nov 30 12:14:37.786 INFO [stderr]     |
Nov 30 12:14:37.786 INFO [stderr] 161 | pub struct Solution { }
Nov 30 12:14:37.786 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.786 INFO [stderr] 
Nov 30 12:14:37.808 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.809 INFO [stderr]  --> src/solutions/six.rs:4:1
Nov 30 12:14:37.809 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/seven.rs:4:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/eight.rs:4:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]   --> src/solutions/nine.rs:53:1
Nov 30 12:14:37.810 INFO [stderr]    |
Nov 30 12:14:37.810 INFO [stderr] 53 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/ten.rs:3:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/eleven.rs:4:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/twelve.rs:5:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 5 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/thirteen.rs:4:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.810 INFO [stderr] 
Nov 30 12:14:37.810 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.810 INFO [stderr]  --> src/solutions/fourteen.rs:4:1
Nov 30 12:14:37.810 INFO [stderr]   |
Nov 30 12:14:37.810 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.810 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/fifteen.rs:3:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/sixteen.rs:3:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/seventeen.rs:3:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/eighteen.rs:6:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 6 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/nineteen.rs:3:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 3 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]   --> src/solutions/twenty.rs:12:1
Nov 30 12:14:37.811 INFO [stderr]    |
Nov 30 12:14:37.811 INFO [stderr] 12 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/twenty_one.rs:6:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 6 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]  --> src/solutions/twenty_two.rs:4:1
Nov 30 12:14:37.811 INFO [stderr]   |
Nov 30 12:14:37.811 INFO [stderr] 4 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.811 INFO [stderr] warning: struct is never constructed: `Solution`
Nov 30 12:14:37.811 INFO [stderr]    --> src/solutions/twenty_three.rs:161:1
Nov 30 12:14:37.811 INFO [stderr]     |
Nov 30 12:14:37.811 INFO [stderr] 161 | pub struct Solution { }
Nov 30 12:14:37.811 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Nov 30 12:14:37.811 INFO [stderr] 
Nov 30 12:14:37.894 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.41s
Nov 30 12:14:37.908 INFO [stderr] su: No module specific data is present
Nov 30 12:14:38.850 INFO running `"docker" "inspect" "0945699c5dc809a0d2f10e2ce12e45a92ab2662e43d53ff5dd75564511cace4b"`
Nov 30 12:14:39.110 INFO running `"docker" "rm" "-f" "0945699c5dc809a0d2f10e2ce12e45a92ab2662e43d53ff5dd75564511cace4b"`
Nov 30 12:14:39.391 INFO [stdout] 0945699c5dc809a0d2f10e2ce12e45a92ab2662e43d53ff5dd75564511cace4b