[INFO] cloning repository https://github.com/jsdw/advent-of-code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsdw/advent-of-code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fadvent-of-code-2019", kill_on_drop: false }`
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[INFO] [stdout] 094c2edfc4880a572ef58cd2fb4618f4551e8ce6
[INFO] checking jsdw/advent-of-code-2019 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsdw%2Fadvent-of-code-2019" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jsdw/advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/jsdw/advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/jsdw/advent-of-code-2019 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jsdw/advent-of-code-2019 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
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[INFO] crate git repo https://github.com/jsdw/advent-of-code-2019 already has a lockfile, it will not be regenerated
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[INFO] [stdout] 09020f195f87d9007d3f90446219b4a04ca4697ef6fa4b8206f23affda109a79
[INFO] running `Command { std: "docker" "start" "-a" "09020f195f87d9007d3f90446219b4a04ca4697ef6fa4b8206f23affda109a79", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
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[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking thread_local v0.3.6
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[INFO] [stderr]     Checking rayon v1.2.1
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[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.5
[INFO] [stderr]     Checking structopt v0.3.5
[INFO] [stderr]     Checking advent-of-code-2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `intcode::Intcode`
[INFO] [stdout]  --> src/support/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use intcode::Intcode;
[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: `ReadIter`
[INFO] [stdout]   --> src/support/mod.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use read_iter::{ ReadIter, IntoReadIter };
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `intcode::Intcode`
[INFO] [stdout]  --> src/support/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use intcode::Intcode;
[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: `ReadIter`
[INFO] [stdout]   --> src/support/mod.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use read_iter::{ ReadIter, IntoReadIter };
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]   --> src/days/day12.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |         .into_iter()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 20 -         .into_iter()
[INFO] [stdout] 20 +         .iter()
[INFO] [stdout]    |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 19 -     let repeats: Vec<_> = [Dimension::X, Dimension::Y, Dimension::Z]
[INFO] [stdout] 20 -         .into_iter()
[INFO] [stdout] 19 +     let repeats: Vec<_> = IntoIterator::into_iter([Dimension::X, Dimension::Y, Dimension::Z])
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/days/day14.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn make_recipes(reactions: &[Reaction]) -> Recipes {
[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] 39 | fn make_recipes(reactions: &[Reaction]) -> Recipes<'_> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 110 -         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout] 110 +         .chain([(end,0)].iter().cloned())
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 110 -         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout] 110 +         .chain(IntoIterator::into_iter([(end,0)]).cloned())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 .into_iter()
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 117 -                 .into_iter()
[INFO] [stdout] 117 +                 .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 116 -             let d = *[Direction::North, Direction::East, Direction::South, Direction::West]
[INFO] [stdout] 117 -                 .into_iter()
[INFO] [stdout] 116 +             let d = *IntoIterator::into_iter([Direction::North, Direction::East, Direction::South, Direction::West])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:153:11
[INFO] [stdout]     |
[INFO] [stdout] 153 |     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 153 -     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 153 +     DIFFS.iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 153 -     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 153 +     IntoIterator::into_iter(DIFFS).map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]   --> src/days/day17.rs:93:15
[INFO] [stdout]    |
[INFO] [stdout] 93 |         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 93 -         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 93 +         DIFFS.iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 93 -         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 93 +         IntoIterator::into_iter(DIFFS).map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day18.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 |         .into_iter()
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 108 -         .into_iter()
[INFO] [stdout] 108 +         .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 107 -     [(0,1),(1,0),(-1,0),(0,-1)]
[INFO] [stdout] 108 -         .into_iter()
[INFO] [stdout] 107 +     IntoIterator::into_iter([(0,1),(1,0),(-1,0),(0,-1)])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]   --> src/days/day12.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |         .into_iter()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 20 -         .into_iter()
[INFO] [stdout] 20 +         .iter()
[INFO] [stdout]    |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 19 -     let repeats: Vec<_> = [Dimension::X, Dimension::Y, Dimension::Z]
[INFO] [stdout] 20 -         .into_iter()
[INFO] [stdout] 19 +     let repeats: Vec<_> = IntoIterator::into_iter([Dimension::X, Dimension::Y, Dimension::Z])
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/days/day14.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn make_recipes(reactions: &[Reaction]) -> Recipes {
[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] 39 | fn make_recipes(reactions: &[Reaction]) -> Recipes<'_> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 110 -         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout] 110 +         .chain([(end,0)].iter().cloned())
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 110 -         .chain([(end,0)].into_iter().cloned())
[INFO] [stdout] 110 +         .chain(IntoIterator::into_iter([(end,0)]).cloned())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 .into_iter()
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 117 -                 .into_iter()
[INFO] [stdout] 117 +                 .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 116 -             let d = *[Direction::North, Direction::East, Direction::South, Direction::West]
[INFO] [stdout] 117 -                 .into_iter()
[INFO] [stdout] 116 +             let d = *IntoIterator::into_iter([Direction::North, Direction::East, Direction::South, Direction::West])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day15.rs:153:11
[INFO] [stdout]     |
[INFO] [stdout] 153 |     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 153 -     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 153 +     DIFFS.iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 153 -     DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 153 +     IntoIterator::into_iter(DIFFS).map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]   --> src/days/day17.rs:93:15
[INFO] [stdout]    |
[INFO] [stdout] 93 |         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 93 -         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 93 +         DIFFS.iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 93 -         DIFFS.into_iter().map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout] 93 +         IntoIterator::into_iter(DIFFS).map(move |(xd,yd)| (x+xd,y+yd))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/days/day18.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 |         .into_iter()
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 108 -         .into_iter()
[INFO] [stdout] 108 +         .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 107 -     [(0,1),(1,0),(-1,0),(0,-1)]
[INFO] [stdout] 108 -         .into_iter()
[INFO] [stdout] 107 +     IntoIterator::into_iter([(0,1),(1,0),(-1,0),(0,-1)])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.63s
[INFO] running `Command { std: "docker" "inspect" "09020f195f87d9007d3f90446219b4a04ca4697ef6fa4b8206f23affda109a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09020f195f87d9007d3f90446219b4a04ca4697ef6fa4b8206f23affda109a79", kill_on_drop: false }`
[INFO] [stdout] 09020f195f87d9007d3f90446219b4a04ca4697ef6fa4b8206f23affda109a79
