[INFO] updating cached repository https://github.com/msathis/adventofcode
[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] 9e0c22e1cd476c6db26f38c4a95af7bfdda4b7ec
[INFO] testing msathis/adventofcode against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsathis%2Fadventofcode" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/msathis/adventofcode on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/msathis/adventofcode
[INFO] finished tweaking git repo https://github.com/msathis/adventofcode
[INFO] tweaked toml for git repo https://github.com/msathis/adventofcode written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/msathis/adventofcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56073e22f0d9dcede1154dc121f1af3f24560fa512d5ce8ae17900e1d5574eab
[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" "56073e22f0d9dcede1154dc121f1af3f24560fa512d5ce8ae17900e1d5574eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56073e22f0d9dcede1154dc121f1af3f24560fa512d5ce8ae17900e1d5574eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56073e22f0d9dcede1154dc121f1af3f24560fa512d5ce8ae17900e1d5574eab", kill_on_drop: false }`
[INFO] [stdout] 56073e22f0d9dcede1154dc121f1af3f24560fa512d5ce8ae17900e1d5574eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] debb9806d8b7eb5dd70da5a9cfe31a3480803209bcb6018470a4122f5fe3ab83
[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" "debb9806d8b7eb5dd70da5a9cfe31a3480803209bcb6018470a4122f5fe3ab83", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day1.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day2.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day3.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day3.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day4.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day4.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_twos`
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_twos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_threes`
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_threes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `claims`
[INFO] [stdout]   --> src/day3.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_claims`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/day3.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     for (key, val) in &hashmap {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/day4.rs:41:38
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/day4.rs:41:75
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                                                           ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_map`
[INFO] [stdout]   --> src/day4.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let (matrix_map, total_map) = get_max_guard(&logs);
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day1.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day1.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day2.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day2.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.19s
[INFO] running `Command { std: "docker" "inspect" "debb9806d8b7eb5dd70da5a9cfe31a3480803209bcb6018470a4122f5fe3ab83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "debb9806d8b7eb5dd70da5a9cfe31a3480803209bcb6018470a4122f5fe3ab83", kill_on_drop: false }`
[INFO] [stdout] debb9806d8b7eb5dd70da5a9cfe31a3480803209bcb6018470a4122f5fe3ab83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33305173e36453a268efc6b1c16d614aed4b39322b9cfa1a73214b29c98b8176
[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" "33305173e36453a268efc6b1c16d614aed4b39322b9cfa1a73214b29c98b8176", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day1.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day2.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day3.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day3.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day4.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day4.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_twos`
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_twos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_threes`
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_threes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `claims`
[INFO] [stdout]   --> src/day3.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_claims`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/day3.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     for (key, val) in &hashmap {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/day4.rs:41:38
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/day4.rs:41:75
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                                                           ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_map`
[INFO] [stdout]   --> src/day4.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let (matrix_map, total_map) = get_max_guard(&logs);
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day1.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day1.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day2.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day2.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day1.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day2.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day3.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day3.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/day4.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::str::Chars`
[INFO] [stdout]  --> src/day4.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_twos`
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_twos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_threes`
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_threes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `claims`
[INFO] [stdout]   --> src/day3.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_claims`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/day3.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     for (key, val) in &hashmap {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/day4.rs:41:38
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> src/day4.rs:41:75
[INFO] [stdout]    |
[INFO] [stdout] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stdout]    |                                                                           ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_map`
[INFO] [stdout]   --> src/day4.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let (matrix_map, total_map) = get_max_guard(&logs);
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut has_twos = false;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/day2.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut has_threes = false;
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day1.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day1.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/day2.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day2.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day3.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/day4.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     stdin().read_to_string(&mut buffer);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "33305173e36453a268efc6b1c16d614aed4b39322b9cfa1a73214b29c98b8176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33305173e36453a268efc6b1c16d614aed4b39322b9cfa1a73214b29c98b8176", kill_on_drop: false }`
[INFO] [stdout] 33305173e36453a268efc6b1c16d614aed4b39322b9cfa1a73214b29c98b8176
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6eb5a876f5f0c7fe89817da11dece314e52bd9c26178d885ebf41b676981e517
[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" "6eb5a876f5f0c7fe89817da11dece314e52bd9c26178d885ebf41b676981e517", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day1.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day2.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day3.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day3.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day4.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day4.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_twos`
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_twos`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_threes`
[INFO] [stderr]   --> src/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_threes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `claims`
[INFO] [stderr]   --> src/day3.rs:58:19
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stderr]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_claims`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/day3.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 |     for (key, val) in &hashmap {
[INFO] [stderr]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/day4.rs:41:38
[INFO] [stderr]    |
[INFO] [stderr] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/day4.rs:41:75
[INFO] [stderr]    |
[INFO] [stderr] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stderr]    |                                                                           ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `total_map`
[INFO] [stderr]   --> src/day4.rs:55:22
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (matrix_map, total_map) = get_max_guard(&logs);
[INFO] [stderr]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_map`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day1.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day1.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day2.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day2.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day4.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day4.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day1.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day2.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day3.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day3.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day4.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day4.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_twos`
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_twos`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_threes`
[INFO] [stderr]   --> src/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_threes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `claims`
[INFO] [stderr]   --> src/day3.rs:58:19
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stderr]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_claims`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/day3.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 |     for (key, val) in &hashmap {
[INFO] [stderr]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/day4.rs:41:38
[INFO] [stderr]    |
[INFO] [stderr] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/day4.rs:41:75
[INFO] [stderr]    |
[INFO] [stderr] 41 |     matrix_map.iter().filter(|&(&(g, v), _)| g == max_guard).for_each(|(&(g, v), val)| {
[INFO] [stderr]    |                                                                           ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `total_map`
[INFO] [stderr]   --> src/day4.rs:55:22
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (matrix_map, total_map) = get_max_guard(&logs);
[INFO] [stderr]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_map`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day1.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day1.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day2.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day2.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day4.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day4.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/advent-05d6036c7cdb2fdd
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/adventofcode-8ef8d0092be33150
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests advent
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6eb5a876f5f0c7fe89817da11dece314e52bd9c26178d885ebf41b676981e517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eb5a876f5f0c7fe89817da11dece314e52bd9c26178d885ebf41b676981e517", kill_on_drop: false }`
[INFO] [stdout] 6eb5a876f5f0c7fe89817da11dece314e52bd9c26178d885ebf41b676981e517