Dec 13 17:28:10.000 INFO testing hmc-memsafe-2016f/wk0-starter against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 17:28:10.000 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 17:28:10.203 INFO [stdout] 0345a7215aa62ecbfe779545dcdc47d37758b4b9bb6d1939ea875d2bc89f4d06
Dec 13 17:28:10.209 INFO running `"docker" "start" "-a" "0345a7215aa62ecbfe779545dcdc47d37758b4b9bb6d1939ea875d2bc89f4d06"`
Dec 13 17:28:10.878 INFO [stderr] usermod: no changes
Dec 13 17:28:10.906 INFO [stderr]    Compiling wk0-starter v0.1.0 (/source)
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `input`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:94:17
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 94 | fn parse_action(input: &str) -> Result<Action,HanoiError> {
Dec 13 17:28:11.255 INFO [stderr]    |                 ^^^^^ help: consider using `_input` instead
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `action`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:198:77
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 198 |         let next_step_or_err = parse_action(line.as_str().trim()).and_then(|action| {
Dec 13 17:28:11.255 INFO [stderr]     |                                                                             ^^^^^^ help: consider using `_action` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `from`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:32:12
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:11.255 INFO [stderr]    |            ^^^^ help: consider using `_from` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `to`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:32:23
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:11.255 INFO [stderr]    |                       ^^ help: consider using `_to` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:77:39
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 77 |             HanoiError::UnstableStack(peg, Disk(size)) => unimplemented!(),
Dec 13 17:28:11.255 INFO [stderr]    |                                       ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `size`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:77:49
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 77 |             HanoiError::UnstableStack(peg, Disk(size)) => unimplemented!(),
Dec 13 17:28:11.255 INFO [stderr]    |                                                 ^^^^ help: consider using `_size` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]   --> src/main.rs:78:35
Dec 13 17:28:11.255 INFO [stderr]    |
Dec 13 17:28:11.255 INFO [stderr] 78 |             HanoiError::EmptyFrom(peg) => unimplemented!(),
Dec 13 17:28:11.255 INFO [stderr]    |                                   ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `disks`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:101:12
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 101 |     fn new(disks: u8) -> State {
Dec 13 17:28:11.255 INFO [stderr]     |            ^^^^^ help: consider using `_disks` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:106:33
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 106 |     fn get_tower_mut(&mut self, peg: Peg) -> &mut Vec<Disk> {
Dec 13 17:28:11.255 INFO [stderr]     |                                 ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:111:25
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 111 |     fn get_tower(&self, peg: Peg) -> &Vec<Disk> {
Dec 13 17:28:11.255 INFO [stderr]     |                         ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:116:28
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 116 |     fn pop_disk(&mut self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:11.255 INFO [stderr]     |                            ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:133:29
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:11.255 INFO [stderr]     |                             ^^^ help: consider using `_peg` instead
Dec 13 17:28:11.255 INFO [stderr] 
Dec 13 17:28:11.255 INFO [stderr] warning: unused variable: `disk`
Dec 13 17:28:11.255 INFO [stderr]    --> src/main.rs:133:39
Dec 13 17:28:11.255 INFO [stderr]     |
Dec 13 17:28:11.255 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:11.256 INFO [stderr]     |                                       ^^^^ help: consider using `_disk` instead
Dec 13 17:28:11.256 INFO [stderr] 
Dec 13 17:28:11.256 INFO [stderr] warning: unused variable: `mov`
Dec 13 17:28:11.256 INFO [stderr]    --> src/main.rs:151:27
Dec 13 17:28:11.256 INFO [stderr]     |
Dec 13 17:28:11.256 INFO [stderr] 151 |     fn do_move(&mut self, mov: Move) -> Result<NextStep, HanoiError> {
Dec 13 17:28:11.256 INFO [stderr]     |                           ^^^ help: consider using `_mov` instead
Dec 13 17:28:11.256 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:188:9
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 188 |     let mut state = State::new(user_start_size.unwrap_or(START_SIZE));
Dec 13 17:28:11.279 INFO [stderr]     |         ----^^^^^
Dec 13 17:28:11.279 INFO [stderr]     |         |
Dec 13 17:28:11.279 INFO [stderr]     |         help: remove this `mut`
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: field is never used: `left`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:19:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 19 |     left: Vec<Disk>,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: field is never used: `center`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:20:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 20 |     center: Vec<Disk>,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: field is never used: `right`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:21:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 21 |     right: Vec<Disk>,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `new`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:32:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `Move`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:47:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 47 |     Move(Move),
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `Quit`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:49:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 49 |     Quit,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `Quit`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:56:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 56 |     Quit,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `Win`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:58:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 58 |     Win,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `Continue`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:60:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 60 |     Continue,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `UnknownCommand`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:66:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 66 |     UnknownCommand,
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `UnstableStack`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:68:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 68 |     UnstableStack(Peg, Disk),
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: variant is never constructed: `EmptyFrom`
Dec 13 17:28:11.279 INFO [stderr]   --> src/main.rs:70:5
Dec 13 17:28:11.279 INFO [stderr]    |
Dec 13 17:28:11.279 INFO [stderr] 70 |     EmptyFrom(Peg),
Dec 13 17:28:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `get_tower_mut`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:106:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 106 |     fn get_tower_mut(&mut self, peg: Peg) -> &mut Vec<Disk> {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `pop_disk`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:116:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 116 |     fn pop_disk(&mut self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `peek_disk`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:121:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 121 |     fn peek_disk(&self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `push_disk`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:133:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `done`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:138:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 138 |     fn done(&self) -> bool {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.279 INFO [stderr] warning: method is never used: `do_move`
Dec 13 17:28:11.279 INFO [stderr]    --> src/main.rs:151:5
Dec 13 17:28:11.279 INFO [stderr]     |
Dec 13 17:28:11.279 INFO [stderr] 151 |     fn do_move(&mut self, mov: Move) -> Result<NextStep, HanoiError> {
Dec 13 17:28:11.279 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:11.279 INFO [stderr] 
Dec 13 17:28:11.559 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
Dec 13 17:28:11.561 INFO [stderr] su: No module specific data is present
Dec 13 17:28:11.878 INFO running `"docker" "inspect" "0345a7215aa62ecbfe779545dcdc47d37758b4b9bb6d1939ea875d2bc89f4d06"`
Dec 13 17:28:11.946 INFO running `"docker" "rm" "-f" "0345a7215aa62ecbfe779545dcdc47d37758b4b9bb6d1939ea875d2bc89f4d06"`
Dec 13 17:28:12.020 INFO [stdout] 0345a7215aa62ecbfe779545dcdc47d37758b4b9bb6d1939ea875d2bc89f4d06
Dec 13 17:28:12.020 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 17:28:12.171 INFO [stdout] ac55fc40c50de4ee6c66c3e83afb9532a257b3774c0e8a9af5927caa17eed99c
Dec 13 17:28:12.173 INFO running `"docker" "start" "-a" "ac55fc40c50de4ee6c66c3e83afb9532a257b3774c0e8a9af5927caa17eed99c"`
Dec 13 17:28:12.739 INFO [stderr] usermod: no changes
Dec 13 17:28:12.760 INFO [stderr]    Compiling wk0-starter v0.1.0 (/source)
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `input`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:94:17
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 94 | fn parse_action(input: &str) -> Result<Action,HanoiError> {
Dec 13 17:28:13.088 INFO [stderr]    |                 ^^^^^ help: consider using `_input` instead
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `action`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:198:77
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 198 |         let next_step_or_err = parse_action(line.as_str().trim()).and_then(|action| {
Dec 13 17:28:13.088 INFO [stderr]     |                                                                             ^^^^^^ help: consider using `_action` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `from`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:32:12
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:13.088 INFO [stderr]    |            ^^^^ help: consider using `_from` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `to`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:32:23
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:13.088 INFO [stderr]    |                       ^^ help: consider using `_to` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:77:39
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 77 |             HanoiError::UnstableStack(peg, Disk(size)) => unimplemented!(),
Dec 13 17:28:13.088 INFO [stderr]    |                                       ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `size`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:77:49
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 77 |             HanoiError::UnstableStack(peg, Disk(size)) => unimplemented!(),
Dec 13 17:28:13.088 INFO [stderr]    |                                                 ^^^^ help: consider using `_size` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]   --> src/main.rs:78:35
Dec 13 17:28:13.088 INFO [stderr]    |
Dec 13 17:28:13.088 INFO [stderr] 78 |             HanoiError::EmptyFrom(peg) => unimplemented!(),
Dec 13 17:28:13.088 INFO [stderr]    |                                   ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `disks`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:101:12
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 101 |     fn new(disks: u8) -> State {
Dec 13 17:28:13.088 INFO [stderr]     |            ^^^^^ help: consider using `_disks` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:106:33
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 106 |     fn get_tower_mut(&mut self, peg: Peg) -> &mut Vec<Disk> {
Dec 13 17:28:13.088 INFO [stderr]     |                                 ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:111:25
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 111 |     fn get_tower(&self, peg: Peg) -> &Vec<Disk> {
Dec 13 17:28:13.088 INFO [stderr]     |                         ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:116:28
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 116 |     fn pop_disk(&mut self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:13.088 INFO [stderr]     |                            ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `peg`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:133:29
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:13.088 INFO [stderr]     |                             ^^^ help: consider using `_peg` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `disk`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:133:39
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:13.088 INFO [stderr]     |                                       ^^^^ help: consider using `_disk` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.088 INFO [stderr] warning: unused variable: `mov`
Dec 13 17:28:13.088 INFO [stderr]    --> src/main.rs:151:27
Dec 13 17:28:13.088 INFO [stderr]     |
Dec 13 17:28:13.088 INFO [stderr] 151 |     fn do_move(&mut self, mov: Move) -> Result<NextStep, HanoiError> {
Dec 13 17:28:13.088 INFO [stderr]     |                           ^^^ help: consider using `_mov` instead
Dec 13 17:28:13.088 INFO [stderr] 
Dec 13 17:28:13.116 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:28:13.116 INFO [stderr]    --> src/main.rs:188:9
Dec 13 17:28:13.116 INFO [stderr]     |
Dec 13 17:28:13.116 INFO [stderr] 188 |     let mut state = State::new(user_start_size.unwrap_or(START_SIZE));
Dec 13 17:28:13.116 INFO [stderr]     |         ----^^^^^
Dec 13 17:28:13.116 INFO [stderr]     |         |
Dec 13 17:28:13.116 INFO [stderr]     |         help: remove this `mut`
Dec 13 17:28:13.116 INFO [stderr]     |
Dec 13 17:28:13.116 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 13 17:28:13.116 INFO [stderr] 
Dec 13 17:28:13.116 INFO [stderr] warning: field is never used: `left`
Dec 13 17:28:13.116 INFO [stderr]   --> src/main.rs:19:5
Dec 13 17:28:13.116 INFO [stderr]    |
Dec 13 17:28:13.117 INFO [stderr] 19 |     left: Vec<Disk>,
Dec 13 17:28:13.117 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 13 17:28:13.117 INFO [stderr]    |
Dec 13 17:28:13.117 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:28:13.117 INFO [stderr] 
Dec 13 17:28:13.117 INFO [stderr] warning: field is never used: `center`
Dec 13 17:28:13.117 INFO [stderr]   --> src/main.rs:20:5
Dec 13 17:28:13.117 INFO [stderr]    |
Dec 13 17:28:13.117 INFO [stderr] 20 |     center: Vec<Disk>,
Dec 13 17:28:13.117 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.117 INFO [stderr] 
Dec 13 17:28:13.119 INFO [stderr] warning: field is never used: `right`
Dec 13 17:28:13.119 INFO [stderr]   --> src/main.rs:21:5
Dec 13 17:28:13.119 INFO [stderr]    |
Dec 13 17:28:13.119 INFO [stderr] 21 |     right: Vec<Disk>,
Dec 13 17:28:13.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 13 17:28:13.119 INFO [stderr] 
Dec 13 17:28:13.119 INFO [stderr] warning: method is never used: `new`
Dec 13 17:28:13.119 INFO [stderr]   --> src/main.rs:32:5
Dec 13 17:28:13.119 INFO [stderr]    |
Dec 13 17:28:13.119 INFO [stderr] 32 |     fn new(from: Peg, to: Peg) -> Move {
Dec 13 17:28:13.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.119 INFO [stderr] 
Dec 13 17:28:13.119 INFO [stderr] warning: variant is never constructed: `Move`
Dec 13 17:28:13.119 INFO [stderr]   --> src/main.rs:47:5
Dec 13 17:28:13.119 INFO [stderr]    |
Dec 13 17:28:13.119 INFO [stderr] 47 |     Move(Move),
Dec 13 17:28:13.119 INFO [stderr]    |     ^^^^^^^^^^
Dec 13 17:28:13.119 INFO [stderr] 
Dec 13 17:28:13.119 INFO [stderr] warning: variant is never constructed: `Quit`
Dec 13 17:28:13.119 INFO [stderr]   --> src/main.rs:49:5
Dec 13 17:28:13.119 INFO [stderr]    |
Dec 13 17:28:13.119 INFO [stderr] 49 |     Quit,
Dec 13 17:28:13.119 INFO [stderr]    |     ^^^^
Dec 13 17:28:13.119 INFO [stderr] 
Dec 13 17:28:13.119 INFO [stderr] warning: variant is never constructed: `Quit`
Dec 13 17:28:13.119 INFO [stderr]   --> src/main.rs:56:5
Dec 13 17:28:13.119 INFO [stderr]    |
Dec 13 17:28:13.119 INFO [stderr] 56 |     Quit,
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: variant is never constructed: `Win`
Dec 13 17:28:13.120 INFO [stderr]   --> src/main.rs:58:5
Dec 13 17:28:13.120 INFO [stderr]    |
Dec 13 17:28:13.120 INFO [stderr] 58 |     Win,
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: variant is never constructed: `Continue`
Dec 13 17:28:13.120 INFO [stderr]   --> src/main.rs:60:5
Dec 13 17:28:13.120 INFO [stderr]    |
Dec 13 17:28:13.120 INFO [stderr] 60 |     Continue,
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: variant is never constructed: `UnknownCommand`
Dec 13 17:28:13.120 INFO [stderr]   --> src/main.rs:66:5
Dec 13 17:28:13.120 INFO [stderr]    |
Dec 13 17:28:13.120 INFO [stderr] 66 |     UnknownCommand,
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: variant is never constructed: `UnstableStack`
Dec 13 17:28:13.120 INFO [stderr]   --> src/main.rs:68:5
Dec 13 17:28:13.120 INFO [stderr]    |
Dec 13 17:28:13.120 INFO [stderr] 68 |     UnstableStack(Peg, Disk),
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: variant is never constructed: `EmptyFrom`
Dec 13 17:28:13.120 INFO [stderr]   --> src/main.rs:70:5
Dec 13 17:28:13.120 INFO [stderr]    |
Dec 13 17:28:13.120 INFO [stderr] 70 |     EmptyFrom(Peg),
Dec 13 17:28:13.120 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `get_tower_mut`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:106:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 106 |     fn get_tower_mut(&mut self, peg: Peg) -> &mut Vec<Disk> {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `pop_disk`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:116:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 116 |     fn pop_disk(&mut self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `peek_disk`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:121:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 121 |     fn peek_disk(&self, peg: Peg) -> Option<Disk> {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `push_disk`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:133:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 133 |     fn push_disk(&mut self, peg: Peg, disk: Disk) -> Result<(), HanoiError> {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `done`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:138:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 138 |     fn done(&self) -> bool {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.120 INFO [stderr] warning: method is never used: `do_move`
Dec 13 17:28:13.120 INFO [stderr]    --> src/main.rs:151:5
Dec 13 17:28:13.120 INFO [stderr]     |
Dec 13 17:28:13.120 INFO [stderr] 151 |     fn do_move(&mut self, mov: Move) -> Result<NextStep, HanoiError> {
Dec 13 17:28:13.120 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:28:13.120 INFO [stderr] 
Dec 13 17:28:13.344 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Dec 13 17:28:13.347 INFO [stderr] su: No module specific data is present
Dec 13 17:28:13.811 INFO running `"docker" "inspect" "ac55fc40c50de4ee6c66c3e83afb9532a257b3774c0e8a9af5927caa17eed99c"`
Dec 13 17:28:14.019 INFO running `"docker" "rm" "-f" "ac55fc40c50de4ee6c66c3e83afb9532a257b3774c0e8a9af5927caa17eed99c"`
Dec 13 17:28:14.161 INFO [stdout] ac55fc40c50de4ee6c66c3e83afb9532a257b3774c0e8a9af5927caa17eed99c
Dec 13 17:28:14.163 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 17:28:14.408 INFO [stdout] 3622953ed7d3ed99e6648d6dc07751e0d8273d27ca975315dae8a2476e506b30
Dec 13 17:28:14.412 INFO running `"docker" "start" "-a" "3622953ed7d3ed99e6648d6dc07751e0d8273d27ca975315dae8a2476e506b30"`
Dec 13 17:28:14.965 INFO [stderr] usermod: no changes
Dec 13 17:28:15.013 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 17:28:15.013 INFO [stderr]      Running /target/debug/deps/wk0_starter-e53918cc23b2f540
Dec 13 17:28:15.013 INFO [stderr] su: No module specific data is present
Dec 13 17:28:15.013 INFO [stdout] 
Dec 13 17:28:15.013 INFO [stdout] running 0 tests
Dec 13 17:28:15.013 INFO [stdout] 
Dec 13 17:28:15.013 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 17:28:15.013 INFO [stdout] 
Dec 13 17:28:15.457 INFO running `"docker" "inspect" "3622953ed7d3ed99e6648d6dc07751e0d8273d27ca975315dae8a2476e506b30"`
Dec 13 17:28:15.674 INFO running `"docker" "rm" "-f" "3622953ed7d3ed99e6648d6dc07751e0d8273d27ca975315dae8a2476e506b30"`
Dec 13 17:28:15.773 INFO [stdout] 3622953ed7d3ed99e6648d6dc07751e0d8273d27ca975315dae8a2476e506b30