[INFO] cloning repository https://github.com/angusjf/advent_2022 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/angusjf/advent_2022" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangusjf%2Fadvent_2022", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangusjf%2Fadvent_2022'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f104e1c192011309c8652d734e9d6c1f52b1f6dd [INFO] checking angusjf/advent_2022 against try#bac5816c5f3d02cebd0599070af62d1782530294 for pr-150408 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangusjf%2Fadvent_2022" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/angusjf/advent_2022 [INFO] finished tweaking git repo https://github.com/angusjf/advent_2022 [INFO] tweaked toml for git repo https://github.com/angusjf/advent_2022 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/angusjf/advent_2022 on toolchain bac5816c5f3d02cebd0599070af62d1782530294 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/angusjf/advent_2022 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" "+bac5816c5f3d02cebd0599070af62d1782530294" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c748f886de7dbc6b4eab5f43ef3769e10ef1bda40e840fd688dc8f864f73a328 [INFO] running `Command { std: "docker" "start" "-a" "c748f886de7dbc6b4eab5f43ef3769e10ef1bda40e840fd688dc8f864f73a328", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c748f886de7dbc6b4eab5f43ef3769e10ef1bda40e840fd688dc8f864f73a328", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c748f886de7dbc6b4eab5f43ef3769e10ef1bda40e840fd688dc8f864f73a328", kill_on_drop: false }` [INFO] [stdout] c748f886de7dbc6b4eab5f43ef3769e10ef1bda40e840fd688dc8f864f73a328 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9c23bd93e3e3d85e06e8c6858b046138987a704565a272d8f9d880d5f0a9d772 [INFO] running `Command { std: "docker" "start" "-a" "9c23bd93e3e3d85e06e8c6858b046138987a704565a272d8f9d880d5f0a9d772", kill_on_drop: false }` [INFO] [stderr] Checking either v1.8.0 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking advent_2022 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/bin/day10.rs:31:16 [INFO] [stdout] | [INFO] [stdout] 31 | .map(|(i, x)| x) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/bin/day17.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | 'outer: for tet in tetronimos.iter().cycle().take(MAX as usize) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `fmt` [INFO] [stdout] --> src/bin/day14.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{fmt, time}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `cmp::Ordering` [INFO] [stdout] --> src/bin/day14.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use std::{cmp::Ordering, collections::HashSet, thread}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `itertools` [INFO] [stdout] --> src/bin/day12.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use itertools::*; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/day07.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | Dir(String), [INFO] [stdout] | --- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Cmd` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 - Dir(String), [INFO] [stdout] 7 + Dir(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/bin/day07.rs:40:22 [INFO] [stdout] | [INFO] [stdout] 40 | fn create_tree(cmds: &Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^^ ^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 40 | fn create_tree(cmds: &Vec) -> Vec> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/day12.rs:59:16 [INFO] [stdout] | [INFO] [stdout] 59 | .map(|(v, dist)| dist) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/bin/day14.rs:128:8 [INFO] [stdout] | [INFO] [stdout] 128 | fn two(input: &str) -> usize { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `start` [INFO] [stdout] --> src/bin/day12.rs:24:46 [INFO] [stdout] | [INFO] [stdout] 24 | fn fewest_steps_to_end(map: &Vec>, start: (usize, usize), goal: (usize, usize)) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_start` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two` is never used [INFO] [stdout] --> src/bin/day14.rs:128:4 [INFO] [stdout] | [INFO] [stdout] 128 | fn two(input: &str) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/bin/day12.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let c = map[y][x]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/bin/day12.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 132 | fn two(input: &str) -> u64 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_map` is never used [INFO] [stdout] --> src/bin/day12.rs:79:4 [INFO] [stdout] | [INFO] [stdout] 79 | fn print_map(map: &Vec>, dist: &HashMap<(usize, usize), i32>) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `fmt` [INFO] [stdout] --> src/bin/day14.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{fmt, time}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `cmp::Ordering` [INFO] [stdout] --> src/bin/day14.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use std::{cmp::Ordering, collections::HashSet, thread}; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `one` is never used [INFO] [stdout] --> src/bin/day15.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn one(input: &str) -> i64 { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `max` should have an upper case name [INFO] [stdout] --> src/bin/day15.rs:160:7 [INFO] [stdout] | [INFO] [stdout] 160 | const max: i64 = 4000000; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] help: convert the identifier to upper case [INFO] [stdout] | [INFO] [stdout] 160 - const max: i64 = 4000000; [INFO] [stdout] 160 + const MAX: i64 = 4000000; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/bin/day14.rs:128:8 [INFO] [stdout] | [INFO] [stdout] 128 | fn two(input: &str) -> usize { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two` is never used [INFO] [stdout] --> src/bin/day14.rs:128:4 [INFO] [stdout] | [INFO] [stdout] 128 | fn two(input: &str) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `max` should have an upper case name [INFO] [stdout] --> src/bin/day15.rs:160:7 [INFO] [stdout] | [INFO] [stdout] 160 | const max: i64 = 4000000; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] help: convert the identifier to upper case [INFO] [stdout] | [INFO] [stdout] 160 - const max: i64 = 4000000; [INFO] [stdout] 160 + const MAX: i64 = 4000000; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `itertools::*` [INFO] [stdout] --> src/bin/day16.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use itertools::*; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/bin/day17.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | 'outer: for tet in tetronimos.iter().cycle().take(MAX as usize) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/bin/day16.rs:73:71 [INFO] [stdout] | [INFO] [stdout] 73 | fn selections<'a>(options: &'a Vec<&'a str>) -> impl Iterator)> + 'a { [INFO] [stdout] | -- -- ^^^^ ^^^^ -- the same lifetime is named here [INFO] [stdout] | | | | | [INFO] [stdout] | | | | the same lifetime is elided here [INFO] [stdout] | | the lifetime is named here the same lifetime is elided here [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 73 | fn selections<'a>(options: &'a Vec<&'a str>) -> impl Iterator)> + 'a { [INFO] [stdout] | ++ ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `itertools` [INFO] [stdout] --> src/bin/day12.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use itertools::*; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/day12.rs:59:16 [INFO] [stdout] | [INFO] [stdout] 59 | .map(|(v, dist)| dist) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `start` [INFO] [stdout] --> src/bin/day12.rs:24:46 [INFO] [stdout] | [INFO] [stdout] 24 | fn fewest_steps_to_end(map: &Vec>, start: (usize, usize), goal: (usize, usize)) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_start` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/bin/day12.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | let c = map[y][x]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `input` [INFO] [stdout] --> src/bin/day12.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 132 | fn two(input: &str) -> u64 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_map` is never used [INFO] [stdout] --> src/bin/day12.rs:79:4 [INFO] [stdout] | [INFO] [stdout] 79 | fn print_map(map: &Vec>, dist: &HashMap<(usize, usize), i32>) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two` is never used [INFO] [stdout] --> src/bin/day12.rs:132:4 [INFO] [stdout] | [INFO] [stdout] 132 | fn two(input: &str) -> u64 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `itertools::*` [INFO] [stdout] --> src/bin/day16.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use itertools::*; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/bin/day10.rs:31:16 [INFO] [stdout] | [INFO] [stdout] 31 | .map(|(i, x)| x) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/bin/day16.rs:73:71 [INFO] [stdout] | [INFO] [stdout] 73 | fn selections<'a>(options: &'a Vec<&'a str>) -> impl Iterator)> + 'a { [INFO] [stdout] | -- -- ^^^^ ^^^^ -- the same lifetime is named here [INFO] [stdout] | | | | | [INFO] [stdout] | | | | the same lifetime is elided here [INFO] [stdout] | | the lifetime is named here the same lifetime is elided here [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 73 | fn selections<'a>(options: &'a Vec<&'a str>) -> impl Iterator)> + 'a { [INFO] [stdout] | ++ ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/day07.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | Dir(String), [INFO] [stdout] | --- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Cmd` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 - Dir(String), [INFO] [stdout] 7 + Dir(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/bin/day07.rs:40:22 [INFO] [stdout] | [INFO] [stdout] 40 | fn create_tree(cmds: &Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^^ ^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 40 | fn create_tree(cmds: &Vec) -> Vec> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.09s [INFO] running `Command { std: "docker" "inspect" "9c23bd93e3e3d85e06e8c6858b046138987a704565a272d8f9d880d5f0a9d772", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9c23bd93e3e3d85e06e8c6858b046138987a704565a272d8f9d880d5f0a9d772", kill_on_drop: false }` [INFO] [stdout] 9c23bd93e3e3d85e06e8c6858b046138987a704565a272d8f9d880d5f0a9d772