[INFO] cloning repository https://github.com/gab50000/AdventOfCode2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gab50000/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgab50000%2FAdventOfCode2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgab50000%2FAdventOfCode2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e34ff86b135de8bb71d9c0cc4abd7dee821ccdc9
[INFO] checking gab50000/AdventOfCode2020 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgab50000%2FAdventOfCode2020" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gab50000/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/gab50000/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/gab50000/AdventOfCode2020 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gab50000/AdventOfCode2020 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gab50000/AdventOfCode2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking gab50000/AdventOfCode2020 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgab50000%2FAdventOfCode2020" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gab50000/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/gab50000/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/gab50000/AdventOfCode2020 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gab50000/AdventOfCode2020 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gab50000/AdventOfCode2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7d924638790d6a657f1eedd372fe859e86d401943fbca5e0c34d099ca6167bc
[INFO] running `Command { std: "docker" "start" "-a" "e7d924638790d6a657f1eedd372fe859e86d401943fbca5e0c34d099ca6167bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7d924638790d6a657f1eedd372fe859e86d401943fbca5e0c34d099ca6167bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7d924638790d6a657f1eedd372fe859e86d401943fbca5e0c34d099ca6167bc", kill_on_drop: false }`
[INFO] [stdout] e7d924638790d6a657f1eedd372fe859e86d401943fbca5e0c34d099ca6167bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2736b4599a7c7abb917f6441bbe474d8faecceb9374156e9455edd79e5140578
[INFO] running `Command { std: "docker" "start" "-a" "2736b4599a7c7abb917f6441bbe474d8faecceb9374156e9455edd79e5140578", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking AdventOfCode2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `AdventOfCode2020` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `advent_of_code2020`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Err`, `ErrorKind`, `Error`, `InputTakeAtPosition`, `anychar`, `line_ending`, and `multi::many1`
[INFO] [stdout]   --> src/day04.rs:6:27
[INFO] [stdout]    |
[INFO] [stdout]  6 |     character::complete::{anychar, char, digit1, line_ending, space1},
[INFO] [stdout]    |                           ^^^^^^^                ^^^^^^^^^^^
[INFO] [stdout]  7 |     combinator::{map_res, opt},
[INFO] [stdout]  8 |     error::{Error, ErrorKind},
[INFO] [stdout]    |             ^^^^^  ^^^^^^^^^
[INFO] [stdout]  9 |     multi::many1,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     sequence::{terminated, tuple},
[INFO] [stdout] 11 |     Err, IResult, InputTakeAtPosition,
[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 macro definition: `parse_str`
[INFO] [stdout]   --> src/day04.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | macro_rules! parse_str {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Err`, `ErrorKind`, `Error`, `InputTakeAtPosition`, `anychar`, `line_ending`, and `multi::many1`
[INFO] [stdout]   --> src/day04.rs:6:27
[INFO] [stdout]    |
[INFO] [stdout]  6 |     character::complete::{anychar, char, digit1, line_ending, space1},
[INFO] [stdout]    |                           ^^^^^^^                ^^^^^^^^^^^
[INFO] [stdout]  7 |     combinator::{map_res, opt},
[INFO] [stdout]  8 |     error::{Error, ErrorKind},
[INFO] [stdout]    |             ^^^^^  ^^^^^^^^^
[INFO] [stdout]  9 |     multi::many1,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     sequence::{terminated, tuple},
[INFO] [stdout] 11 |     Err, IResult, InputTakeAtPosition,
[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 macro definition: `parse_str`
[INFO] [stdout]   --> src/day04.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | macro_rules! parse_str {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `space_or_newline` is never used
[INFO] [stdout]   --> src/day04.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn space_or_newline(input: &str) -> IResult<&str, &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BirthYear` is never constructed
[INFO] [stdout]   --> src/day04.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct BirthYear(u32);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> src/day04.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 | impl BirthYear {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 54 |     parse_num!("byr");
[INFO] [stdout]    |     ----------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `parse_num` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IssueYear` is never constructed
[INFO] [stdout]   --> src/day04.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct IssueYear(u32);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> src/day04.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 | impl IssueYear {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 67 |     parse_num!("iyr");
[INFO] [stdout]    |     ----------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `parse_num` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExpirationYear` is never constructed
[INFO] [stdout]   --> src/day04.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct ExpirationYear(u32);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> src/day04.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 | impl ExpirationYear {
[INFO] [stdout]    | ------------------- associated function in this implementation
[INFO] [stdout] 72 |     parse_num!("eyr");
[INFO] [stdout]    |     ----------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `parse_num` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `HeightUnit` is never used
[INFO] [stdout]   --> src/day04.rs:76:6
[INFO] [stdout]    |
[INFO] [stdout] 76 | enum HeightUnit {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> src/day04.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl HeightUnit {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 82 |     fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Height` is never constructed
[INFO] [stdout]   --> src/day04.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Height(HeightUnit);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> src/day04.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | impl Height {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 96 |     fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HairColor` is never constructed
[INFO] [stdout]    --> src/day04.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct HairColor(String);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/day04.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | impl HairColor {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 120 |     fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EyeColor` is never constructed
[INFO] [stdout]    --> src/day04.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | struct EyeColor(String);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/day04.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | impl EyeColor {
[INFO] [stdout]     | ------------- associated function in this implementation
[INFO] [stdout] 149 |     fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PassportID` is never constructed
[INFO] [stdout]    --> src/day04.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | struct PassportID(u32);
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/day04.rs:22:12
[INFO] [stdout]     |
[INFO] [stdout]  22 |         fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 160 | impl PassportID {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 161 |     parse_num!("pid");
[INFO] [stdout]     |     ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `parse_num` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CountryID` is never constructed
[INFO] [stdout]    --> src/day04.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 | struct CountryID(u32);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]    --> src/day04.rs:22:12
[INFO] [stdout]     |
[INFO] [stdout]  22 |         fn parse(input: &str) -> IResult<&str, Self> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 | impl CountryID {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 168 |     parse_num!("cid");
[INFO] [stdout]     |     ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `parse_num` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Passport` is never constructed
[INFO] [stdout]    --> src/day04.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | struct Passport {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse`, and `is_valid` are never used
[INFO] [stdout]    --> src/day04.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 183 | impl Passport {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 184 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 |     fn parse(input: &str) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 224 |     fn is_valid(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]    --> src/day04.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | pub fn solve_a() -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `till_whitespace` is never used
[INFO] [stdout]    --> src/day04.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn till_whitespace(input: &str) -> IResult<&str, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/day04.rs:124:19
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let val = String::from_str(val).unwrap();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/day04.rs:153:25
[INFO] [stdout]     |
[INFO] [stdout] 153 |         Ok((input, Self(String::from_str(val).unwrap())))
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]  --> src/day05.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     for r in result {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     for r in result {
[INFO] [stdout] 7 +     while let Some(r) = result {
[INFO] [stdout]   |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]   |
[INFO] [stdout] 7 -     for r in result {
[INFO] [stdout] 7 +     if let Some(r) = result {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_a` is never used
[INFO] [stdout]    --> src/day04.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | pub fn solve_a() -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `AdventOfCode2020` (bin "AdventOfCode2020") due to 2 previous errors; 26 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/day04.rs:124:19
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let val = String::from_str(val).unwrap();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/day04.rs:153:25
[INFO] [stdout]     |
[INFO] [stdout] 153 |         Ok((input, Self(String::from_str(val).unwrap())))
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]  --> src/day05.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     for r in result {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     for r in result {
[INFO] [stdout] 7 +     while let Some(r) = result {
[INFO] [stdout]   |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]   |
[INFO] [stdout] 7 -     for r in result {
[INFO] [stdout] 7 +     if let Some(r) = result {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `AdventOfCode2020` (bin "AdventOfCode2020" test) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2736b4599a7c7abb917f6441bbe474d8faecceb9374156e9455edd79e5140578", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2736b4599a7c7abb917f6441bbe474d8faecceb9374156e9455edd79e5140578", kill_on_drop: false }`
[INFO] [stdout] 2736b4599a7c7abb917f6441bbe474d8faecceb9374156e9455edd79e5140578
