[INFO] cloning repository https://github.com/Jovasa/aoc2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jovasa/aoc2015" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJovasa%2Faoc2015", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJovasa%2Faoc2015'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff347f2755f701397ff73a02429d066864dcce52
[INFO] checking Jovasa/aoc2015 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJovasa%2Faoc2015" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jovasa/aoc2015 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jovasa/aoc2015
[INFO] finished tweaking git repo https://github.com/Jovasa/aoc2015
[INFO] tweaked toml for git repo https://github.com/Jovasa/aoc2015 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jovasa/aoc2015 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded md5 v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23e5596a0ecd7ff79bbaafe4edbd9712f1418976d4557cb19ea5f23e1d24194d
[INFO] running `Command { std: "docker" "start" "-a" "23e5596a0ecd7ff79bbaafe4edbd9712f1418976d4557cb19ea5f23e1d24194d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23e5596a0ecd7ff79bbaafe4edbd9712f1418976d4557cb19ea5f23e1d24194d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e5596a0ecd7ff79bbaafe4edbd9712f1418976d4557cb19ea5f23e1d24194d", kill_on_drop: false }`
[INFO] [stdout] 23e5596a0ecd7ff79bbaafe4edbd9712f1418976d4557cb19ea5f23e1d24194d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9ada73d5a0f5489ea0d8aa2f410b086f1d9b9b514b884506d7cf120ef13eac3
[INFO] running `Command { std: "docker" "start" "-a" "e9ada73d5a0f5489ea0d8aa2f410b086f1d9b9b514b884506d7cf120ef13eac3", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking aoc2015 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `get_present_count` is never used
[INFO] [stdout]  --> src/day20.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn get_present_count(i: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/day14.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/day14.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sc`
[INFO] [stdout]   --> src/day14.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                                 ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day14.rs:37:52
[INFO] [stdout]    |
[INFO] [stdout] 37 |         reindeer.iter_mut().enumerate().for_each(|(x, i)| {
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Equipment` is never constructed
[INFO] [stdout]   --> src/day21.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Equipment {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_combat` is never used
[INFO] [stdout]   --> src/day21.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn do_combat(mut player: Character, mut boss: Character) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/day21.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day1.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufRead, BufReader, Read};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/day7.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `out` is never read
[INFO] [stdout]   --> src/day7.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Operation {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     out: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/day7.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/day25.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     for i in 2.. {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/day4.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `out` is never read
[INFO] [stdout]   --> src/day7.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Operation {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     out: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/day4.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/day25.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     for i in 2.. {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/day1.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{BufRead, BufReader, Read};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Equipment` is never constructed
[INFO] [stdout]   --> src/day21.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Equipment {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_combat` is never used
[INFO] [stdout]   --> src/day21.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn do_combat(mut player: Character, mut boss: Character) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/day21.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/day14.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/day14.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sc`
[INFO] [stdout]   --> src/day14.rs:38:33
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let (n, s, a, r, p, sc) = i;
[INFO] [stdout]    |                                 ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day14.rs:37:52
[INFO] [stdout]    |
[INFO] [stdout] 37 |         reindeer.iter_mut().enumerate().for_each(|(x, i)| {
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_present_count` is never used
[INFO] [stdout]  --> src/day20.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn get_present_count(i: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.25s
[INFO] running `Command { std: "docker" "inspect" "e9ada73d5a0f5489ea0d8aa2f410b086f1d9b9b514b884506d7cf120ef13eac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ada73d5a0f5489ea0d8aa2f410b086f1d9b9b514b884506d7cf120ef13eac3", kill_on_drop: false }`
[INFO] [stdout] e9ada73d5a0f5489ea0d8aa2f410b086f1d9b9b514b884506d7cf120ef13eac3