[INFO] updating cached repository mvojacek/rust-expr-calc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mvojacek/rust-expr-calc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mvojacek/rust-expr-calc" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvojacek/rust-expr-calc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvojacek/rust-expr-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mvojacek/rust-expr-calc" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvojacek/rust-expr-calc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvojacek/rust-expr-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fe285145034d08d383d362c3f5f6c61aa72daf6c
[INFO] sha for GitHub repo mvojacek/rust-expr-calc: fe285145034d08d383d362c3f5f6c61aa72daf6c
[INFO] validating manifest of mvojacek/rust-expr-calc on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mvojacek/rust-expr-calc on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mvojacek/rust-expr-calc
[INFO] finished frobbing mvojacek/rust-expr-calc
[INFO] frobbed toml for mvojacek/rust-expr-calc written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvojacek/rust-expr-calc/Cargo.toml
[INFO] started frobbing mvojacek/rust-expr-calc
[INFO] finished frobbing mvojacek/rust-expr-calc
[INFO] frobbed toml for mvojacek/rust-expr-calc written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvojacek/rust-expr-calc/Cargo.toml
[INFO] crate mvojacek/rust-expr-calc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking mvojacek/rust-expr-calc against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvojacek/rust-expr-calc:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ce2cafe3c6e34d211ab84198ccc45831b4a451cd5a7e9609f8ddd57b2abf3a54
[INFO] running `"docker" "start" "-a" "ce2cafe3c6e34d211ab84198ccc45831b4a451cd5a7e9609f8ddd57b2abf3a54"`
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking rustplay v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/asdebug.rs:6:28
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn as_debug(&self) -> &Debug;
[INFO] [stderr]   |                            ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/asdebug.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn as_debug(&self) -> &Debug {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/nodelinkedlist.rs:327:48
[INFO] [stderr]     |
[INFO] [stderr] 327 |         let it = &mut iter.into_iter() as &mut Iterator<Item=A>;
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=A>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:99:15
[INFO] [stderr]    |
[INFO] [stderr] 99 |     OpErr(Box<fmt::Display + Send>),
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:210:40
[INFO] [stderr]     |
[INFO] [stderr] 210 |     where F: Fn(N, N) -> Result<N, Box<fmt::Display + Send>> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/asdebug.rs:6:28
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn as_debug(&self) -> &Debug;
[INFO] [stderr]   |                            ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/asdebug.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn as_debug(&self) -> &Debug {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/nodelinkedlist.rs:327:48
[INFO] [stderr]     |
[INFO] [stderr] 327 |         let it = &mut iter.into_iter() as &mut Iterator<Item=A>;
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=A>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:99:15
[INFO] [stderr]    |
[INFO] [stderr] 99 |     OpErr(Box<fmt::Display + Send>),
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:210:40
[INFO] [stderr]     |
[INFO] [stderr] 210 |     where F: Fn(N, N) -> Result<N, Box<fmt::Display + Send>> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:184:24
[INFO] [stderr]     |
[INFO] [stderr] 184 |         Expr::Num { n, locked } => Ok(n),
[INFO] [stderr]     |                        ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:225:37
[INFO] [stderr]     |
[INFO] [stderr] 225 |                         Expr::Num { n, locked } => {
[INFO] [stderr]     |                                     ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:233:29
[INFO] [stderr]     |
[INFO] [stderr] 233 |                 Expr::Num { n, locked: true } => return Ok(()),
[INFO] [stderr]     |                             ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:241:37
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         Expr::Num { n, locked } => {
[INFO] [stderr]     |                                     ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:249:29
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 Expr::Num { n, locked: true } => return Ok(()),
[INFO] [stderr]     |                             ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/main.rs:276:44
[INFO] [stderr]     |
[INFO] [stderr] 276 |             paren_mut_adjacent_num(&n, p, |num, locked| {
[INFO] [stderr]     |                                            ^^^ help: consider prefixing with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:302:65
[INFO] [stderr]     |
[INFO] [stderr] 302 |             paren_mut_adjacent_num(&close_paren, Paren::Close, |n, locked| {
[INFO] [stderr]     |                                                                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:305:63
[INFO] [stderr]     |
[INFO] [stderr] 305 |             paren_mut_adjacent_num(&open_paren, Paren::Open, |n, locked| {
[INFO] [stderr]     |                                                               ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:292:32
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 Expr::Num { n, locked } => n,
[INFO] [stderr]     |                                ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:385:28
[INFO] [stderr]     |
[INFO] [stderr] 385 |             Expr::Num { n, locked } => true,
[INFO] [stderr]     |                            ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:385:25
[INFO] [stderr]     |
[INFO] [stderr] 385 |             Expr::Num { n, locked } => true,
[INFO] [stderr]     |                         ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_before_node`
[INFO] [stderr]    --> src/nodelinkedlist.rs:133:5
[INFO] [stderr]     |
[INFO] [stderr] 133 |     pub fn insert_before_node(self, node: &Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_before`
[INFO] [stderr]    --> src/nodelinkedlist.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn insert_before(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_after`
[INFO] [stderr]    --> src/nodelinkedlist.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn split_after(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_before`
[INFO] [stderr]    --> src/nodelinkedlist.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn split_before(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter_walk_val`
[INFO] [stderr]    --> src/nodelinkedlist.rs:209:5
[INFO] [stderr]     |
[INFO] [stderr] 209 |     pub fn iter_walk_val(&self) -> WalkingIterVal<T> where T: Clone {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_iter_back`
[INFO] [stderr]    --> src/nodelinkedlist.rs:217:5
[INFO] [stderr]     |
[INFO] [stderr] 217 |     pub fn list_iter_back(&self) -> Chain<Once<Self>, WalkingIterBack<T>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_iter_val`
[INFO] [stderr]    --> src/nodelinkedlist.rs:221:5
[INFO] [stderr]     |
[INFO] [stderr] 221 |     pub fn list_iter_val(&self) -> Chain<Once<T>, WalkingIterVal<T>> where T: Clone {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]    --> src/nodelinkedlist.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 227 |     pub fn tail(&self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `head`
[INFO] [stderr]    --> src/nodelinkedlist.rs:231:5
[INFO] [stderr]     |
[INFO] [stderr] 231 |     pub fn head(&self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_distance`
[INFO] [stderr]    --> src/nodelinkedlist.rs:239:5
[INFO] [stderr]     |
[INFO] [stderr] 239 |     pub fn list_distance(&self, following: &Self) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_find`
[INFO] [stderr]    --> src/nodelinkedlist.rs:244:5
[INFO] [stderr]     |
[INFO] [stderr] 244 |     pub fn list_find(&self, other: &Self) -> Option<(bool, usize)> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_append_node`
[INFO] [stderr]    --> src/nodelinkedlist.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     pub fn list_append_node(&self, node: &Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_append`
[INFO] [stderr]    --> src/nodelinkedlist.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn list_append(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_prepend_node`
[INFO] [stderr]    --> src/nodelinkedlist.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 |     pub fn list_prepend_node(&self, node: &Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_prepend`
[INFO] [stderr]    --> src/nodelinkedlist.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn list_prepend(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_linkedlist_for_tests`
[INFO] [stderr]    --> src/nodelinkedlist.rs:345:1
[INFO] [stderr]     |
[INFO] [stderr] 345 | fn make_linkedlist_for_tests() -> [Node<i32>; 4] {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate10`
[INFO] [stderr]    --> src/main.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | fn calculate10<N: MyNum>(expr: &String) -> Result<N, (Option<usize>, CalcErr<N>)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_num`
[INFO] [stderr]    --> src/main.rs:383:5
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn is_num(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_op`
[INFO] [stderr]    --> src/main.rs:389:5
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn is_op(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_paren`
[INFO] [stderr]    --> src/main.rs:395:5
[INFO] [stderr]     |
[INFO] [stderr] 395 |     fn is_paren(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/asdebug.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(specialization, core_intrinsics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/asdebug.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(specialization, core_intrinsics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:184:24
[INFO] [stderr]     |
[INFO] [stderr] 184 |         Expr::Num { n, locked } => Ok(n),
[INFO] [stderr]     |                        ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:225:37
[INFO] [stderr]     |
[INFO] [stderr] 225 |                         Expr::Num { n, locked } => {
[INFO] [stderr]     |                                     ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:233:29
[INFO] [stderr]     |
[INFO] [stderr] 233 |                 Expr::Num { n, locked: true } => return Ok(()),
[INFO] [stderr]     |                             ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:241:37
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         Expr::Num { n, locked } => {
[INFO] [stderr]     |                                     ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:249:29
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 Expr::Num { n, locked: true } => return Ok(()),
[INFO] [stderr]     |                             ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/main.rs:276:44
[INFO] [stderr]     |
[INFO] [stderr] 276 |             paren_mut_adjacent_num(&n, p, |num, locked| {
[INFO] [stderr]     |                                            ^^^ help: consider prefixing with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:302:65
[INFO] [stderr]     |
[INFO] [stderr] 302 |             paren_mut_adjacent_num(&close_paren, Paren::Close, |n, locked| {
[INFO] [stderr]     |                                                                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:305:63
[INFO] [stderr]     |
[INFO] [stderr] 305 |             paren_mut_adjacent_num(&open_paren, Paren::Open, |n, locked| {
[INFO] [stderr]     |                                                               ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:292:32
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 Expr::Num { n, locked } => n,
[INFO] [stderr]     |                                ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `locked`
[INFO] [stderr]    --> src/main.rs:385:28
[INFO] [stderr]     |
[INFO] [stderr] 385 |             Expr::Num { n, locked } => true,
[INFO] [stderr]     |                            ^^^^^^ help: try ignoring the field: `locked: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:385:25
[INFO] [stderr]     |
[INFO] [stderr] 385 |             Expr::Num { n, locked } => true,
[INFO] [stderr]     |                         ^ help: try ignoring the field: `n: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n4`
[INFO] [stderr]    --> src/nodelinkedlist.rs:443:9
[INFO] [stderr]     |
[INFO] [stderr] 443 |     let n4 = Node::new(4);
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_n4`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_before`
[INFO] [stderr]    --> src/nodelinkedlist.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn insert_before(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_after`
[INFO] [stderr]    --> src/nodelinkedlist.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     pub fn split_after(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_before`
[INFO] [stderr]    --> src/nodelinkedlist.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn split_before(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_append_node`
[INFO] [stderr]    --> src/nodelinkedlist.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     pub fn list_append_node(&self, node: &Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_append`
[INFO] [stderr]    --> src/nodelinkedlist.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn list_append(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_prepend_node`
[INFO] [stderr]    --> src/nodelinkedlist.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 |     pub fn list_prepend_node(&self, node: &Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `list_prepend`
[INFO] [stderr]    --> src/nodelinkedlist.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn list_prepend(&self, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_num`
[INFO] [stderr]    --> src/main.rs:383:5
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn is_num(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_op`
[INFO] [stderr]    --> src/main.rs:389:5
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn is_op(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_paren`
[INFO] [stderr]    --> src/main.rs:395:5
[INFO] [stderr]     |
[INFO] [stderr] 395 |     fn is_paren(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/asdebug.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(specialization, core_intrinsics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/asdebug.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(specialization, core_intrinsics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `"docker" "inspect" "ce2cafe3c6e34d211ab84198ccc45831b4a451cd5a7e9609f8ddd57b2abf3a54"`
[INFO] running `"docker" "rm" "-f" "ce2cafe3c6e34d211ab84198ccc45831b4a451cd5a7e9609f8ddd57b2abf3a54"`
[INFO] [stdout] ce2cafe3c6e34d211ab84198ccc45831b4a451cd5a7e9609f8ddd57b2abf3a54