[INFO] cloning repository https://github.com/kovipu/advent-of-code-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kovipu/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkovipu%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkovipu%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b3f4d151fb80621af63e7204bea32307946c6b1
[INFO] checking kovipu/advent-of-code-2021 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkovipu%2Fadvent-of-code-2021" "/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/kovipu/advent-of-code-2021 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/kovipu/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/kovipu/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/kovipu/advent-of-code-2021 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kovipu/advent-of-code-2021 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-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4db755b6627b330097ddbded96645c9cf9294ac8c8815f886ec4833a6fd7ced9
[INFO] running `Command { std: "docker" "start" "-a" "4db755b6627b330097ddbded96645c9cf9294ac8c8815f886ec4833a6fd7ced9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4db755b6627b330097ddbded96645c9cf9294ac8c8815f886ec4833a6fd7ced9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4db755b6627b330097ddbded96645c9cf9294ac8c8815f886ec4833a6fd7ced9", kill_on_drop: false }`
[INFO] [stdout] 4db755b6627b330097ddbded96645c9cf9294ac8c8815f886ec4833a6fd7ced9
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d21d97247fcd3a0030e5cec28c15b01017b4eec67c56c38cc06bfe8f36a02f99
[INFO] running `Command { std: "docker" "start" "-a" "d21d97247fcd3a0030e5cec28c15b01017b4eec67c56c38cc06bfe8f36a02f99", kill_on_drop: false }`
[INFO] [stderr]     Checking array_tool v1.0.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day18.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn part_2(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SnailfishNumber` is never used
[INFO] [stdout]   --> src/day18.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum SnailfishNumber {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SnailfishNumberReduceResult` is never constructed
[INFO] [stdout]   --> src/day18.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct SnailfishNumberReduceResult {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, `explode`, and `split` are never used
[INFO] [stdout]    --> src/day18.rs:35:8
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl SnailfishNumber {
[INFO] [stdout]     | -------------------- associated items in this implementation
[INFO] [stdout] 35  |     fn new(input: &str) -> (SnailfishNumber, &str) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53  |     fn add(&self, other: &SnailfishNumber) -> SnailfishNumber {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 91  |     fn explode(
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 198 |     fn split(&self) -> SnailfishNumber {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day18.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn part_2(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `Command { std: "docker" "inspect" "d21d97247fcd3a0030e5cec28c15b01017b4eec67c56c38cc06bfe8f36a02f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d21d97247fcd3a0030e5cec28c15b01017b4eec67c56c38cc06bfe8f36a02f99", kill_on_drop: false }`
[INFO] [stdout] d21d97247fcd3a0030e5cec28c15b01017b4eec67c56c38cc06bfe8f36a02f99
[INFO] checking kovipu/advent-of-code-2021 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkovipu%2Fadvent-of-code-2021" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kovipu/advent-of-code-2021 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/kovipu/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/kovipu/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/kovipu/advent-of-code-2021 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kovipu/advent-of-code-2021 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9216a51375f7ffa2313ce0780e19e791b2df76e82e5638b0af34bb14c7f4b1a8
[INFO] running `Command { std: "docker" "start" "-a" "9216a51375f7ffa2313ce0780e19e791b2df76e82e5638b0af34bb14c7f4b1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9216a51375f7ffa2313ce0780e19e791b2df76e82e5638b0af34bb14c7f4b1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9216a51375f7ffa2313ce0780e19e791b2df76e82e5638b0af34bb14c7f4b1a8", kill_on_drop: false }`
[INFO] [stdout] 9216a51375f7ffa2313ce0780e19e791b2df76e82e5638b0af34bb14c7f4b1a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ae8bcb491b0efb3c0abe8b6622a40dc2cc259d30f4f89b6136685cfa2ab4c6ec
[INFO] running `Command { std: "docker" "start" "-a" "ae8bcb491b0efb3c0abe8b6622a40dc2cc259d30f4f89b6136685cfa2ab4c6ec", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking array_tool v1.0.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day18.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn part_2(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SnailfishNumber` is never used
[INFO] [stdout]   --> src/day18.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum SnailfishNumber {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SnailfishNumberReduceResult` is never constructed
[INFO] [stdout]   --> src/day18.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct SnailfishNumberReduceResult {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, `explode`, and `split` are never used
[INFO] [stdout]    --> src/day18.rs:35:8
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl SnailfishNumber {
[INFO] [stdout]     | -------------------- associated items in this implementation
[INFO] [stdout] 35  |     fn new(input: &str) -> (SnailfishNumber, &str) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53  |     fn add(&self, other: &SnailfishNumber) -> SnailfishNumber {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 91  |     fn explode(
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 198 |     fn split(&self) -> SnailfishNumber {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day18.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn part_1(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> src/day19.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn part_2(input: &str) -> i64 {
[INFO] [stdout]   |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "ae8bcb491b0efb3c0abe8b6622a40dc2cc259d30f4f89b6136685cfa2ab4c6ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8bcb491b0efb3c0abe8b6622a40dc2cc259d30f4f89b6136685cfa2ab4c6ec", kill_on_drop: false }`
[INFO] [stdout] ae8bcb491b0efb3c0abe8b6622a40dc2cc259d30f4f89b6136685cfa2ab4c6ec