[INFO] updating cached repository https://github.com/modulitos/CtCI-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8bbaa49c3eca43a77cf1a2cea1b6f98071ad2c78 [INFO] checking modulitos/CtCI-rust against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodulitos%2FCtCI-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/modulitos/CtCI-rust on toolchain c724b67e1b474262917a5154d74e7072267593fe [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/modulitos/CtCI-rust [INFO] finished tweaking git repo https://github.com/modulitos/CtCI-rust [INFO] tweaked toml for git repo https://github.com/modulitos/CtCI-rust written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/modulitos/CtCI-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 079dae428b559dde681c5507f9818c0175f9ef56399bdc8ee4fddb0f55bca2c5 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "079dae428b559dde681c5507f9818c0175f9ef56399bdc8ee4fddb0f55bca2c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "079dae428b559dde681c5507f9818c0175f9ef56399bdc8ee4fddb0f55bca2c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "079dae428b559dde681c5507f9818c0175f9ef56399bdc8ee4fddb0f55bca2c5", kill_on_drop: false }` [INFO] [stdout] 079dae428b559dde681c5507f9818c0175f9ef56399bdc8ee4fddb0f55bca2c5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d9b24c8f3fb28b6f24e7f8763da6e4a4d5a6428400c49c07a84718eecbd2a839 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d9b24c8f3fb28b6f24e7f8763da6e4a4d5a6428400c49c07a84718eecbd2a839", kill_on_drop: false }` [INFO] [stderr] Compiling lazy_static v1.3.0 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling regex-syntax v0.6.12 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking getrandom v0.1.7 [INFO] [stderr] Compiling thread_local v0.3.6 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling aho-corasick v0.7.6 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Compiling regex v1.3.1 [INFO] [stderr] Compiling derive_more v0.15.0 [INFO] [stderr] Checking rust-solutions v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/linked_list/second.rs:11:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub type Link = Option<(Box>)>; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/linked_list/third.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/linked_list/fifth.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Ord`, `Ordering` [INFO] [stdout] --> src/graph.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cmp::{Ord, Ordering}; [INFO] [stdout] | ^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/linked_list/second.rs:11:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub type Link = Option<(Box>)>; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::List` [INFO] [stdout] --> src/linked_list/second.rs:167:9 [INFO] [stdout] | [INFO] [stdout] 167 | use super::List; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/linked_list/third.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/linked_list/fifth.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/linked_list/refcell_singly.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/stack.rs:115:9 [INFO] [stdout] | [INFO] [stdout] 115 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/binary_search_tree.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Ord`, `Ordering` [INFO] [stdout] --> src/graph.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cmp::{Ord, Ordering}; [INFO] [stdout] | ^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/graph.rs:178:9 [INFO] [stdout] | [INFO] [stdout] 178 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/binary_tree.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/binary_tree_refcell.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/binary_search_tree_refcell.rs:128:9 [INFO] [stdout] | [INFO] [stdout] 128 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/second.rs:67:12 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `into_iter` [INFO] [stdout] --> src/linked_list/second.rs:71:12 [INFO] [stdout] | [INFO] [stdout] 71 | pub fn into_iter(self) -> IntoIter { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `iter` [INFO] [stdout] --> src/linked_list/second.rs:76:12 [INFO] [stdout] | [INFO] [stdout] 76 | pub fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `iter_mut` [INFO] [stdout] --> src/linked_list/second.rs:84:12 [INFO] [stdout] | [INFO] [stdout] 84 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/linked_list/second.rs:90:12 [INFO] [stdout] | [INFO] [stdout] 90 | pub fn push(&mut self, elem: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek` [INFO] [stdout] --> src/linked_list/second.rs:119:12 [INFO] [stdout] | [INFO] [stdout] 119 | pub fn peek(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek_mut` [INFO] [stdout] --> src/linked_list/second.rs:123:12 [INFO] [stdout] | [INFO] [stdout] 123 | pub fn peek_mut(&mut self) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/third.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `append` [INFO] [stdout] --> src/linked_list/third.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn append(&mut self, elem: T) -> Self { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/linked_list/third.rs:35:12 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn tail(&self) -> Self { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head` [INFO] [stdout] --> src/linked_list/third.rs:40:12 [INFO] [stdout] | [INFO] [stdout] 40 | pub fn head(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `iter` [INFO] [stdout] --> src/linked_list/third.rs:107:12 [INFO] [stdout] | [INFO] [stdout] 107 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/fourth.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | fn new(elem: T) -> Rc> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/fourth.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push_front` [INFO] [stdout] --> src/linked_list/fourth.rs:35:12 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn push_front(&mut self, elem: T) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek_front` [INFO] [stdout] --> src/linked_list/fourth.rs:76:12 [INFO] [stdout] | [INFO] [stdout] 76 | pub fn peek_front(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `prev` [INFO] [stdout] --> src/linked_list/brandon.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | prev: Option>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/linked_list/brandon.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | fn tail(node: &NodeRef) -> Option> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `remove` [INFO] [stdout] --> src/linked_list/brandon.rs:46:8 [INFO] [stdout] | [INFO] [stdout] 46 | fn remove(&mut self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/brandon.rs:64:8 [INFO] [stdout] | [INFO] [stdout] 64 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `append` [INFO] [stdout] --> src/linked_list/brandon.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | fn append(&mut self, new_value: T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/linked_list/brandon.rs:85:8 [INFO] [stdout] | [INFO] [stdout] 85 | fn tail(&self) -> Option> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `iter` [INFO] [stdout] --> src/linked_list/brandon.rs:96:8 [INFO] [stdout] | [INFO] [stdout] 96 | fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `list_has_duplicates` [INFO] [stdout] --> src/linked_list/brandon.rs:102:8 [INFO] [stdout] | [INFO] [stdout] 102 | fn list_has_duplicates(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `remove_duplicates` [INFO] [stdout] --> src/linked_list/brandon.rs:117:8 [INFO] [stdout] | [INFO] [stdout] 117 | fn remove_duplicates(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main` [INFO] [stdout] --> src/linked_list/brandon.rs:228:4 [INFO] [stdout] | [INFO] [stdout] 228 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/fifth.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/linked_list/fifth.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn push(&mut self, elem: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop` [INFO] [stdout] --> src/linked_list/fifth.rs:53:12 [INFO] [stdout] | [INFO] [stdout] 53 | pub fn pop(&mut self) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 41 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `ch5_p4_next_number` [INFO] [stdout] --> src/bin/ch5-p4_next-number.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | / fn next_numbers(n: i32) -> (i32, i32) { [INFO] [stdout] 8 | | (get_next_smallest(n), get_next_largest(n)) [INFO] [stdout] 9 | | } [INFO] [stdout] 10 | | [INFO] [stdout] ... | [INFO] [stdout] 82 | | ) [INFO] [stdout] 83 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `src/bin/ch5-p4_next-number.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `ch5_p3_flip_bit_to_win` [INFO] [stdout] --> src/bin/ch5-p3_flip-bit-to-win.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | / use std::cmp; [INFO] [stdout] 9 | | [INFO] [stdout] 10 | | // This is O(b) time and space complexity, where b is the length of [INFO] [stdout] 11 | | // the binary representation. [INFO] [stdout] ... | [INFO] [stdout] 72 | | assert_eq!(flip_to_win(0b101110011), 5); [INFO] [stdout] 73 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `src/bin/ch5-p3_flip-bit-to-win.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: type alias is never used: `Matrix` [INFO] [stdout] --> src/bin/ch1-p8_zero-matrix.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | type Matrix<'a> = &'a mut [&'a mut [u32]]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `zero_matrix` [INFO] [stdout] --> src/bin/ch1-p8_zero-matrix.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn zero_matrix(matrix: Matrix) -> Matrix { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-solutions`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `map` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/ch1-p3_check-permutation.rs:15:13 [INFO] [stdout] | [INFO] [stdout] 14 | if let Some(count) = map.get(&c) { [INFO] [stdout] | --- immutable borrow occurs here [INFO] [stdout] 15 | map.insert(c, count + 1); [INFO] [stdout] | ^^^ ----- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BTreeNode as Node`, `BinaryTree` [INFO] [stdout] --> src/bin/ch4-p10_check-subtree.rs:11:31 [INFO] [stdout] | [INFO] [stdout] 11 | use cracking::{BTree as Tree, BTreeNode as Node, BinaryTree}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/bin/ch4-p10_check-subtree.rs:66:9 [INFO] [stdout] | [INFO] [stdout] 66 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `ch4_p10_check_subtree` [INFO] [stdout] --> src/bin/ch4-p10_check-subtree.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | / use cracking::{BTree as Tree, BTreeNode as Node, BinaryTree}; [INFO] [stdout] 12 | | [INFO] [stdout] 13 | | // Uses a string comparison approach - serialize the trees into [INFO] [stdout] 14 | | // strings, then check whether the substree's string is contained [INFO] [stdout] ... | [INFO] [stdout] 124 | | } [INFO] [stdout] 125 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `src/bin/ch4-p10_check-subtree.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `map` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/ch1-p3_check-permutation.rs:15:13 [INFO] [stdout] | [INFO] [stdout] 14 | if let Some(count) = map.get(&c) { [INFO] [stdout] | --- immutable borrow occurs here [INFO] [stdout] 15 | map.insert(c, count + 1); [INFO] [stdout] | ^^^ ----- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `ch7_p5_online_book_reader` [INFO] [stdout] --> src/bin/ch7-p5_online-book-reader.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | / use std::collections::HashMap; [INFO] [stdout] 15 | | #[macro_use] [INFO] [stdout] 16 | | extern crate derive_more; [INFO] [stdout] 17 | | [INFO] [stdout] ... | [INFO] [stdout] 268 | | assert_eq!(reader.turn_page().current_page, Some(3)); [INFO] [stdout] 269 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `src/bin/ch7-p5_online-book-reader.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `map` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/ch1-p4_palindrom-permutation.rs:31:13 [INFO] [stdout] | [INFO] [stdout] 30 | if let Some(value) = map.get(&c) { [INFO] [stdout] | --- immutable borrow occurs here [INFO] [stdout] 31 | map.insert(c, value + 1); [INFO] [stdout] | ^^^ ----- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: function is never used: `test_conversion_width_1` [INFO] [stdout] --> src/bin/ch5-p8_draw-line.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn test_conversion_width_1() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | let a: ThreeStacks = ThreeStacks::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `grow` [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 70 | fn grow(&mut self, min_cap: usize) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:129:9 [INFO] [stdout] | [INFO] [stdout] 129 | s.push(1, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:136:9 [INFO] [stdout] | [INFO] [stdout] 136 | s.push(1, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:137:9 [INFO] [stdout] | [INFO] [stdout] 137 | s.push(2, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:138:9 [INFO] [stdout] | [INFO] [stdout] 138 | s.push(3, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:144:9 [INFO] [stdout] | [INFO] [stdout] 144 | s.push(1, 1).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:145:9 [INFO] [stdout] | [INFO] [stdout] 145 | s.push(2, 1).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:146:9 [INFO] [stdout] | [INFO] [stdout] 146 | s.push(3, 1).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 152 | s.push(1, 2).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:153:9 [INFO] [stdout] | [INFO] [stdout] 153 | s.push(2, 2).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:154:9 [INFO] [stdout] | [INFO] [stdout] 154 | s.push(3, 2).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:165:9 [INFO] [stdout] | [INFO] [stdout] 165 | s.push(1, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | s.push(2, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:167:9 [INFO] [stdout] | [INFO] [stdout] 167 | s.push(3, 0).is_ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_err` that must be used [INFO] [stdout] --> src/bin/ch3-p1_three-in-one.rs:168:9 [INFO] [stdout] | [INFO] [stdout] 168 | s.push(4, 0).is_err(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is err, consider `.unwrap_err()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/stack.rs:153:13 [INFO] [stdout] | [INFO] [stdout] 153 | let mut s: Stack = Stack::new(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `list_has_duplicates` [INFO] [stdout] --> src/linked_list/brandon.rs:102:8 [INFO] [stdout] | [INFO] [stdout] 102 | fn list_has_duplicates(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main` [INFO] [stdout] --> src/linked_list/brandon.rs:228:4 [INFO] [stdout] | [INFO] [stdout] 228 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "d9b24c8f3fb28b6f24e7f8763da6e4a4d5a6428400c49c07a84718eecbd2a839", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d9b24c8f3fb28b6f24e7f8763da6e4a4d5a6428400c49c07a84718eecbd2a839", kill_on_drop: false }` [INFO] [stdout] d9b24c8f3fb28b6f24e7f8763da6e4a4d5a6428400c49c07a84718eecbd2a839