[INFO] cloning repository https://github.com/msathis/adventofcode [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/msathis/adventofcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsathis%2Fadventofcode", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsathis%2Fadventofcode'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9e0c22e1cd476c6db26f38c4a95af7bfdda4b7ec [INFO] checking msathis/adventofcode against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsathis%2Fadventofcode" "/workspace/builds/worker-10/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/msathis/adventofcode on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-10/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aff3707c3dba481186e2f5d3090aa0b30969cc80866a53faf24b8d93e3ed3dab [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" "aff3707c3dba481186e2f5d3090aa0b30969cc80866a53faf24b8d93e3ed3dab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aff3707c3dba481186e2f5d3090aa0b30969cc80866a53faf24b8d93e3ed3dab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aff3707c3dba481186e2f5d3090aa0b30969cc80866a53faf24b8d93e3ed3dab", kill_on_drop: false }` [INFO] [stdout] aff3707c3dba481186e2f5d3090aa0b30969cc80866a53faf24b8d93e3ed3dab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e23b57cf8ad63fc6e1e70c0c76a74a734e6ad071adc394414ead881fac81b5ac [INFO] running `Command { std: "docker" "start" "-a" "e23b57cf8ad63fc6e1e70c0c76a74a734e6ad071adc394414ead881fac81b5ac", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.44 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Compiling memchr v2.1.1 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.4 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking regex v1.1.0 [INFO] [stderr] Checking 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 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:14:17 [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:15:17 [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 `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 `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 `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 `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 `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 `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 `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 `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: unused variable: `has_twos` [INFO] [stdout] --> src/day2.rs:14:17 [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:15:17 [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: 23 warnings emitted [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 `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 `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 `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 `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 `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 `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 `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 `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 9.75s [INFO] running `Command { std: "docker" "inspect" "e23b57cf8ad63fc6e1e70c0c76a74a734e6ad071adc394414ead881fac81b5ac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e23b57cf8ad63fc6e1e70c0c76a74a734e6ad071adc394414ead881fac81b5ac", kill_on_drop: false }` [INFO] [stdout] e23b57cf8ad63fc6e1e70c0c76a74a734e6ad071adc394414ead881fac81b5ac