[INFO] cloning repository https://github.com/blitzerr/rust-aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blitzerr/rust-aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblitzerr%2Frust-aoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblitzerr%2Frust-aoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13a8902bb8030c6b4a403e869421f80ccac69877
[INFO] checking blitzerr/rust-aoc2020 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblitzerr%2Frust-aoc2020" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blitzerr/rust-aoc2020 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blitzerr/rust-aoc2020
[INFO] finished tweaking git repo https://github.com/blitzerr/rust-aoc2020
[INFO] tweaked toml for git repo https://github.com/blitzerr/rust-aoc2020 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/blitzerr/rust-aoc2020 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c05dbd37a84c790e235e0e568779a4c9c4054cf13908e6d880c9a1ff5ab3eb4
[INFO] running `Command { std: "docker" "start" "-a" "4c05dbd37a84c790e235e0e568779a4c9c4054cf13908e6d880c9a1ff5ab3eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c05dbd37a84c790e235e0e568779a4c9c4054cf13908e6d880c9a1ff5ab3eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c05dbd37a84c790e235e0e568779a4c9c4054cf13908e6d880c9a1ff5ab3eb4", kill_on_drop: false }`
[INFO] [stdout] 4c05dbd37a84c790e235e0e568779a4c9c4054cf13908e6d880c9a1ff5ab3eb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e5bd34a0dfdf33b3674a2fae53dafeb185bd1f4f259e4bfe67e1e9f2821b14b
[INFO] running `Command { std: "docker" "start" "-a" "5e5bd34a0dfdf33b3674a2fae53dafeb185bd1f4f259e4bfe67e1e9f2821b14b", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]  --> src/day1.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn part1(expense: &[i32], sum: &i32) -> Option<i32> { 
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day1.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn part2(expense: &[i32], sum: &i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `min`, `max`, `ch`, and `example` are never read
[INFO] [stdout]  --> src/day2.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RuleAndExampleSet {
[INFO] [stdout]   |        ----------------- fields in this struct
[INFO] [stdout] 5 |     min: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     max: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     ch: char,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 8 |     example: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RuleAndExampleSet` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `does_count_lie_between` is never used
[INFO] [stdout]   --> src/day2.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn does_count_lie_between(rule: &RuleAndExampleSet) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day2.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn part1(pwds: &[&str]) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `does_position_contain` is never used
[INFO] [stdout]   --> src/day2.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn does_position_contain(rule: &RuleAndExampleSet) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day2.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn part2(pwds: &[&str]) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_tree` is never used
[INFO] [stdout]  --> src/day3.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn is_tree(line: &str, idx: usize) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Step` is never constructed
[INFO] [stdout]  --> src/day3.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Step {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]   --> src/day3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Pos {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day3.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn part1(trees: &[&str], steps_to_rt: usize, steps_down: usize) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day4.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn part1(input: &str) -> (i32, i32) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_height` is never used
[INFO] [stdout]    --> src/day4.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn is_valid_height(ht: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_hair_color` is never used
[INFO] [stdout]    --> src/day4.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn is_valid_hair_color(hcl: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> src/day4.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn part2(passport: &Passport) -> bool {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_row_recursive` is never used
[INFO] [stdout]  --> src/day5.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn get_row_recursive(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_row` is never used
[INFO] [stdout]   --> src/day5.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn get_row(row_str: &[char]) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_col` is never used
[INFO] [stdout]   --> src/day5.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn get_col(col_str: &[char]) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_missing_seat` is never used
[INFO] [stdout]   --> src/day5.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_missing_seat(seats: &Vec<usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day5.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn part1(boarding_passes: &[&str]) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_yesses` is never used
[INFO] [stdout]  --> src/day6.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn all_yesses(s: &Vec<char>, members: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_groups` is never used
[INFO] [stdout]   --> src/day6.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn get_groups(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_string_to_map` is never used
[INFO] [stdout]   --> src/day7.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn parse_string_to_map(s: &str) -> HashMap<String, Vec<(i32, String)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_all_paths` is never used
[INFO] [stdout]   --> src/day7.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn create_all_paths<'a>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day7.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn part1(s: &str, key: &str) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `travel` is never used
[INFO] [stdout]    --> src/day7.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn travel(key: &str, hm: &HashMap<String, Vec<(i32, String)>>, spaces: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> src/day7.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn part2(s: &str, key: &str) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/day8.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse(s: &str) -> Vec<(&str, i32)> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day8.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn part1(s: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exec` is never used
[INFO] [stdout]   --> src/day8.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn exec(v: &Vec<(&str, i32)>) -> (i32, bool) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify` is never used
[INFO] [stdout]   --> src/day8.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn modify(v: &mut Vec<(&str, i32)>, curr: usize) -> bool {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day8.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn part2(s: &str) -> i32 {
[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/day7.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     for v in hm.get(&key.to_string()) {
[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] 105 |     while let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 105 |     if let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[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/day7.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     for v in hm.get(&key.to_string()) {
[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] 105 |     while let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 105 |     if let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "5e5bd34a0dfdf33b3674a2fae53dafeb185bd1f4f259e4bfe67e1e9f2821b14b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e5bd34a0dfdf33b3674a2fae53dafeb185bd1f4f259e4bfe67e1e9f2821b14b", kill_on_drop: false }`
[INFO] [stdout] 5e5bd34a0dfdf33b3674a2fae53dafeb185bd1f4f259e4bfe67e1e9f2821b14b
[INFO] checking blitzerr/rust-aoc2020 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblitzerr%2Frust-aoc2020" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blitzerr/rust-aoc2020 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blitzerr/rust-aoc2020
[INFO] finished tweaking git repo https://github.com/blitzerr/rust-aoc2020
[INFO] tweaked toml for git repo https://github.com/blitzerr/rust-aoc2020 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/blitzerr/rust-aoc2020 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b180e52babf91b5921f8c9b8a941c91b52f256e9c33fb6f02e9db0b29ed1095a
[INFO] running `Command { std: "docker" "start" "-a" "b180e52babf91b5921f8c9b8a941c91b52f256e9c33fb6f02e9db0b29ed1095a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b180e52babf91b5921f8c9b8a941c91b52f256e9c33fb6f02e9db0b29ed1095a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b180e52babf91b5921f8c9b8a941c91b52f256e9c33fb6f02e9db0b29ed1095a", kill_on_drop: false }`
[INFO] [stdout] b180e52babf91b5921f8c9b8a941c91b52f256e9c33fb6f02e9db0b29ed1095a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac6f8c0b3151fe343828a0133f0f1374d66e01027945cfbb7c921d2590b642ea
[INFO] running `Command { std: "docker" "start" "-a" "ac6f8c0b3151fe343828a0133f0f1374d66e01027945cfbb7c921d2590b642ea", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]  --> src/day1.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn part1(expense: &[i32], sum: &i32) -> Option<i32> { 
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day1.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn part2(expense: &[i32], sum: &i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `min`, `max`, `ch`, and `example` are never read
[INFO] [stdout]  --> src/day2.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RuleAndExampleSet {
[INFO] [stdout]   |        ----------------- fields in this struct
[INFO] [stdout] 5 |     min: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     max: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     ch: char,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 8 |     example: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RuleAndExampleSet` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `does_count_lie_between` is never used
[INFO] [stdout]   --> src/day2.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn does_count_lie_between(rule: &RuleAndExampleSet) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day2.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn part1(pwds: &[&str]) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `does_position_contain` is never used
[INFO] [stdout]   --> src/day2.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn does_position_contain(rule: &RuleAndExampleSet) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day2.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn part2(pwds: &[&str]) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_tree` is never used
[INFO] [stdout]  --> src/day3.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn is_tree(line: &str, idx: usize) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Step` is never constructed
[INFO] [stdout]  --> src/day3.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Step {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pos` is never constructed
[INFO] [stdout]   --> src/day3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Pos {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day3.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn part1(trees: &[&str], steps_to_rt: usize, steps_down: usize) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day4.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn part1(input: &str) -> (i32, i32) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_height` is never used
[INFO] [stdout]    --> src/day4.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn is_valid_height(ht: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_hair_color` is never used
[INFO] [stdout]    --> src/day4.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn is_valid_hair_color(hcl: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> src/day4.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn part2(passport: &Passport) -> bool {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_row_recursive` is never used
[INFO] [stdout]  --> src/day5.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn get_row_recursive(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_row` is never used
[INFO] [stdout]   --> src/day5.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn get_row(row_str: &[char]) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_col` is never used
[INFO] [stdout]   --> src/day5.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn get_col(col_str: &[char]) -> usize {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_missing_seat` is never used
[INFO] [stdout]   --> src/day5.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_missing_seat(seats: &Vec<usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day5.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn part1(boarding_passes: &[&str]) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_yesses` is never used
[INFO] [stdout]  --> src/day6.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn all_yesses(s: &Vec<char>, members: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_groups` is never used
[INFO] [stdout]   --> src/day6.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn get_groups(s: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_string_to_map` is never used
[INFO] [stdout]   --> src/day7.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn parse_string_to_map(s: &str) -> HashMap<String, Vec<(i32, String)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_all_paths` is never used
[INFO] [stdout]   --> src/day7.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn create_all_paths<'a>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day7.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn part1(s: &str, key: &str) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `travel` is never used
[INFO] [stdout]    --> src/day7.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn travel(key: &str, hm: &HashMap<String, Vec<(i32, String)>>, spaces: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> src/day7.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn part2(s: &str, key: &str) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/day8.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse(s: &str) -> Vec<(&str, i32)> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day8.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn part1(s: &str) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exec` is never used
[INFO] [stdout]   --> src/day8.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn exec(v: &Vec<(&str, i32)>) -> (i32, bool) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify` is never used
[INFO] [stdout]   --> src/day8.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn modify(v: &mut Vec<(&str, i32)>, curr: usize) -> bool {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day8.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn part2(s: &str) -> i32 {
[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/day7.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     for v in hm.get(&key.to_string()) {
[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] 105 |     while let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 105 |     if let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[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/day7.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     for v in hm.get(&key.to_string()) {
[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] 105 |     while let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 105 |     if let Some(v) = hm.get(&key.to_string()) {
[INFO] [stdout]     |     ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "ac6f8c0b3151fe343828a0133f0f1374d66e01027945cfbb7c921d2590b642ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac6f8c0b3151fe343828a0133f0f1374d66e01027945cfbb7c921d2590b642ea", kill_on_drop: false }`
[INFO] [stdout] ac6f8c0b3151fe343828a0133f0f1374d66e01027945cfbb7c921d2590b642ea