[INFO] cloning repository https://github.com/ivardb/AdventOfCode2020 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivardb/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0ba07af90afca60b7a62def23a0eec67e001f2ca [INFO] checking ivardb/AdventOfCode2020 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ivardb/AdventOfCode2020 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ivardb/AdventOfCode2020 [INFO] finished tweaking git repo https://github.com/ivardb/AdventOfCode2020 [INFO] tweaked toml for git repo https://github.com/ivardb/AdventOfCode2020 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ivardb/AdventOfCode2020 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded const_fn v0.4.3 [INFO] [stderr] Downloaded grid v0.2.3 [INFO] [stderr] Downloaded coord_2d v0.2.22 [INFO] [stderr] Downloaded direction v0.17.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0b55be93d2ca920a484fa0eae1b39ae26c54e406c5dbd6c2c3feccf8398640e0 [INFO] running `Command { std: "docker" "start" "-a" "0b55be93d2ca920a484fa0eae1b39ae26c54e406c5dbd6c2c3feccf8398640e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0b55be93d2ca920a484fa0eae1b39ae26c54e406c5dbd6c2c3feccf8398640e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0b55be93d2ca920a484fa0eae1b39ae26c54e406c5dbd6c2c3feccf8398640e0", kill_on_drop: false }` [INFO] [stdout] 0b55be93d2ca920a484fa0eae1b39ae26c54e406c5dbd6c2c3feccf8398640e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d9d7c5e76e6d3108e27b37de020cd1ff472d624bc24e426b15502e94132debb9 [INFO] running `Command { std: "docker" "start" "-a" "d9d7c5e76e6d3108e27b37de020cd1ff472d624bc24e426b15502e94132debb9", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling const_fn v0.4.3 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling syn v1.0.53 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking half v1.6.0 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking coord_2d v0.2.22 [INFO] [stderr] Checking grid v0.2.3 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking direction v0.17.10 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking plotters v0.2.15 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking crossbeam-epoch v0.9.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking rayon-core v1.9.0 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking rayon v1.5.0 [INFO] [stderr] Checking bstr v0.2.14 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.5 [INFO] [stderr] Checking tinytemplate v1.1.0 [INFO] [stderr] Checking criterion v0.3.3 [INFO] [stderr] Checking aoc2020 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `grid` is imported redundantly [INFO] [stdout] --> src/days/day3/part1.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use grid; [INFO] [stdout] | ^^^^ the item `grid` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `grid` is imported redundantly [INFO] [stdout] --> src/days/day3/part1.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use grid; [INFO] [stdout] | ^^^^ the item `grid` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `default_input` is imported redundantly [INFO] [stdout] --> src/days/day9/part1.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 33 | use super::*; [INFO] [stdout] | -------- the item `default_input` is already imported here [INFO] [stdout] 34 | use crate::days::day9::default_input; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `default_input` is imported redundantly [INFO] [stdout] --> src/days/day9/part2.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 40 | use super::*; [INFO] [stdout] | -------- the item `default_input` is already imported here [INFO] [stdout] 41 | use crate::days::day9::default_input; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day16/part2.rs:38:39 [INFO] [stdout] | [INFO] [stdout] 38 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:32:39 [INFO] [stdout] | [INFO] [stdout] 32 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | .sorted_by_key(|(k, _v)| k.clone()) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:46 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:96 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:164 [INFO] [stdout] | [INFO] [stdout] 23 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:43:47 [INFO] [stdout] | [INFO] [stdout] 43 | let mut nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:47:46 [INFO] [stdout] | [INFO] [stdout] 47 | nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:46 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:96 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:164 [INFO] [stdout] | [INFO] [stdout] 26 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:38:46 [INFO] [stdout] | [INFO] [stdout] 38 | let dest = lookup.get(&dest).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:43:40 [INFO] [stdout] | [INFO] [stdout] 43 | let node1 = lookup.get(&1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:44:43 [INFO] [stdout] | [INFO] [stdout] 44 | let nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:45:50 [INFO] [stdout] | [INFO] [stdout] 45 | let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `aoc2020` is imported redundantly [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use aoc2020; [INFO] [stdout] | ^^^^^^^ the item `aoc2020` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `aoc2020` is imported redundantly [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use aoc2020; [INFO] [stdout] | ^^^^^^^ the item `aoc2020` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day16/part2.rs:38:39 [INFO] [stdout] | [INFO] [stdout] 38 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:32:39 [INFO] [stdout] | [INFO] [stdout] 32 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | .sorted_by_key(|(k, _v)| k.clone()) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:46 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:96 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:164 [INFO] [stdout] | [INFO] [stdout] 23 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:43:47 [INFO] [stdout] | [INFO] [stdout] 43 | let mut nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:47:46 [INFO] [stdout] | [INFO] [stdout] 47 | nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:46 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:96 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:164 [INFO] [stdout] | [INFO] [stdout] 26 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:38:46 [INFO] [stdout] | [INFO] [stdout] 38 | let dest = lookup.get(&dest).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:43:40 [INFO] [stdout] | [INFO] [stdout] 43 | let node1 = lookup.get(&1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:44:43 [INFO] [stdout] | [INFO] [stdout] 44 | let nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:45:50 [INFO] [stdout] | [INFO] [stdout] 45 | let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.41s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "d9d7c5e76e6d3108e27b37de020cd1ff472d624bc24e426b15502e94132debb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d9d7c5e76e6d3108e27b37de020cd1ff472d624bc24e426b15502e94132debb9", kill_on_drop: false }` [INFO] [stdout] d9d7c5e76e6d3108e27b37de020cd1ff472d624bc24e426b15502e94132debb9 [INFO] checking ivardb/AdventOfCode2020 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ivardb/AdventOfCode2020 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ivardb/AdventOfCode2020 [INFO] finished tweaking git repo https://github.com/ivardb/AdventOfCode2020 [INFO] tweaked toml for git repo https://github.com/ivardb/AdventOfCode2020 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ivardb/AdventOfCode2020 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f3c349d9d4ad1019a29a8e2cfb713317b91a28f0476e9fbbb2cb53285c8e7a4f [INFO] running `Command { std: "docker" "start" "-a" "f3c349d9d4ad1019a29a8e2cfb713317b91a28f0476e9fbbb2cb53285c8e7a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f3c349d9d4ad1019a29a8e2cfb713317b91a28f0476e9fbbb2cb53285c8e7a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3c349d9d4ad1019a29a8e2cfb713317b91a28f0476e9fbbb2cb53285c8e7a4f", kill_on_drop: false }` [INFO] [stdout] f3c349d9d4ad1019a29a8e2cfb713317b91a28f0476e9fbbb2cb53285c8e7a4f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8c8237d3bc77223a5d84f253e4a46d12d7a7aa3c7197e42475bc423a21be76d9 [INFO] running `Command { std: "docker" "start" "-a" "8c8237d3bc77223a5d84f253e4a46d12d7a7aa3c7197e42475bc423a21be76d9", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling const_fn v0.4.3 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling syn v1.0.53 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking half v1.6.0 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking coord_2d v0.2.22 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking grid v0.2.3 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking direction v0.17.10 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking crossbeam-epoch v0.9.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking plotters v0.2.15 [INFO] [stderr] Checking rayon-core v1.9.0 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking rayon v1.5.0 [INFO] [stderr] Checking bstr v0.2.14 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.5 [INFO] [stderr] Checking tinytemplate v1.1.0 [INFO] [stderr] Checking criterion v0.3.3 [INFO] [stderr] Checking aoc2020 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `grid` is imported redundantly [INFO] [stdout] --> src/days/day3/part1.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use grid; [INFO] [stdout] | ^^^^ the item `grid` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `grid` is imported redundantly [INFO] [stdout] --> src/days/day3/part1.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use grid; [INFO] [stdout] | ^^^^ the item `grid` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `default_input` is imported redundantly [INFO] [stdout] --> src/days/day9/part1.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 33 | use super::*; [INFO] [stdout] | -------- the item `default_input` is already imported here [INFO] [stdout] 34 | use crate::days::day9::default_input; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `default_input` is imported redundantly [INFO] [stdout] --> src/days/day9/part2.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 40 | use super::*; [INFO] [stdout] | -------- the item `default_input` is already imported here [INFO] [stdout] 41 | use crate::days::day9::default_input; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day16/part2.rs:38:39 [INFO] [stdout] | [INFO] [stdout] 38 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:32:39 [INFO] [stdout] | [INFO] [stdout] 32 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | .sorted_by_key(|(k, _v)| k.clone()) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:46 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:96 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:164 [INFO] [stdout] | [INFO] [stdout] 23 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:43:47 [INFO] [stdout] | [INFO] [stdout] 43 | let mut nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:47:46 [INFO] [stdout] | [INFO] [stdout] 47 | nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:46 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:96 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:164 [INFO] [stdout] | [INFO] [stdout] 26 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:38:46 [INFO] [stdout] | [INFO] [stdout] 38 | let dest = lookup.get(&dest).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:43:40 [INFO] [stdout] | [INFO] [stdout] 43 | let node1 = lookup.get(&1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:44:43 [INFO] [stdout] | [INFO] [stdout] 44 | let nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:45:50 [INFO] [stdout] | [INFO] [stdout] 45 | let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day16/part2.rs:38:39 [INFO] [stdout] | [INFO] [stdout] 38 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:32:39 [INFO] [stdout] | [INFO] [stdout] 32 | match_rule = Some(rule.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type [INFO] [stdout] --> src/days/day21/part2.rs:46:35 [INFO] [stdout] | [INFO] [stdout] 46 | .sorted_by_key(|(k, _v)| k.clone()) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:46 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:96 [INFO] [stdout] | [INFO] [stdout] 23 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:23:164 [INFO] [stdout] | [INFO] [stdout] 23 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:43:47 [INFO] [stdout] | [INFO] [stdout] 43 | let mut nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part1.rs:47:46 [INFO] [stdout] | [INFO] [stdout] 47 | nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:46 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:96 [INFO] [stdout] | [INFO] [stdout] 26 | ... let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr).unwr... [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:26:164 [INFO] [stdout] | [INFO] [stdout] 26 | ...e(), nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:38:46 [INFO] [stdout] | [INFO] [stdout] 38 | let dest = lookup.get(&dest).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:43:40 [INFO] [stdout] | [INFO] [stdout] 43 | let node1 = lookup.get(&1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:44:43 [INFO] [stdout] | [INFO] [stdout] 44 | let nxt_node = nxt.get(node1).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node` instead of cloning the inner type [INFO] [stdout] --> src/days/day23/part2.rs:45:50 [INFO] [stdout] | [INFO] [stdout] 45 | let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `aoc2020` is imported redundantly [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use aoc2020; [INFO] [stdout] | ^^^^^^^ the item `aoc2020` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `aoc2020` is imported redundantly [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use aoc2020; [INFO] [stdout] | ^^^^^^^ the item `aoc2020` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.59s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "8c8237d3bc77223a5d84f253e4a46d12d7a7aa3c7197e42475bc423a21be76d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8c8237d3bc77223a5d84f253e4a46d12d7a7aa3c7197e42475bc423a21be76d9", kill_on_drop: false }` [INFO] [stdout] 8c8237d3bc77223a5d84f253e4a46d12d7a7aa3c7197e42475bc423a21be76d9