[INFO] cloning repository https://github.com/volyx/advent2020-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/volyx/advent2020-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolyx%2Fadvent2020-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolyx%2Fadvent2020-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2d22a37e8967a675e57273445a8e7c702e15f6d
[INFO] checking volyx/advent2020-rust against master#e4106065bf1bb515935d5d024e8d9c86454e2b22 for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolyx%2Fadvent2020-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/volyx/advent2020-rust on toolchain e4106065bf1bb515935d5d024e8d9c86454e2b22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/volyx/advent2020-rust
[INFO] finished tweaking git repo https://github.com/volyx/advent2020-rust
[INFO] tweaked toml for git repo https://github.com/volyx/advent2020-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/volyx/advent2020-rust 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" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a96b3cc0b25e2dc880920228d17dfcdf0be9e10aaac5029b6cbd73c06c97cda7
[INFO] running `Command { std: "docker" "start" "-a" "a96b3cc0b25e2dc880920228d17dfcdf0be9e10aaac5029b6cbd73c06c97cda7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a96b3cc0b25e2dc880920228d17dfcdf0be9e10aaac5029b6cbd73c06c97cda7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a96b3cc0b25e2dc880920228d17dfcdf0be9e10aaac5029b6cbd73c06c97cda7", kill_on_drop: false }`
[INFO] [stdout] a96b3cc0b25e2dc880920228d17dfcdf0be9e10aaac5029b6cbd73c06c97cda7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34a23ac784ea2053600eaa3cd9e3abb66135febdec78c390f9239e5c7de23453
[INFO] running `Command { std: "docker" "start" "-a" "34a23ac784ea2053600eaa3cd9e3abb66135febdec78c390f9239e5c7de23453", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `row_mid` is never read
[INFO] [stdout]   --> src/advent5/mod.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut row_mid = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col_mid` is never read
[INFO] [stdout]   --> src/advent5/mod.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut col_mid = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `row_mid` is never read
[INFO] [stdout]   --> src/advent5/mod.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut row_mid = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col_mid` is never read
[INFO] [stdout]   --> src/advent5/mod.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut col_mid = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `program` is never read
[INFO] [stdout]   --> src/advent8/mod.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut program: Vec<String> = Vec::new();
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `program` is never read
[INFO] [stdout]   --> src/advent8/mod.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut program: Vec<String> = Vec::new();
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_index` is never read
[INFO] [stdout]   --> src/advent9/mod.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut current_index = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_index` is never read
[INFO] [stdout]   --> src/advent9/mod.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut current_index = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent1/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent2/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent3/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent4/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent5/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent6/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent7/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_2` is never used
[INFO] [stdout]   --> src/advent7/mod.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn part_2(bags: Vec<Bag>) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `topological_find` is never used
[INFO] [stdout]   --> src/advent7/mod.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn topological_find(bags: &Vec<Bag>, current_bag: &str, count: & mut Cell<i32>, level: usize, multiplier: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_1` is never used
[INFO] [stdout]   --> src/advent7/mod.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn part_1(bags: Vec<Bag>) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_bag` is never used
[INFO] [stdout]   --> src/advent7/mod.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn find_bag(bag: &Bag, bags_map: &Vec<Bag>, name: &str, level: usize) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `children` is never read
[INFO] [stdout]    --> src/advent7/mod.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | struct Bag {
[INFO] [stdout]     |        --- field in this struct
[INFO] [stdout] 127 |     id: String,
[INFO] [stdout] 128 |     children: Vec<Bag>,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Bag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent8/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_program` is never used
[INFO] [stdout]   --> src/advent8/mod.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn check_program(lines: Vec<String>) -> (i32, bool) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&str` instead of dereferencing the inner type
[INFO] [stdout]   --> src/advent2/mod.rs:13:42
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let range = parts.get(0).unwrap().deref();
[INFO] [stdout]    |                                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent1/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solution` is never used
[INFO] [stdout]  --> src/advent2/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn solution() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-playground` (bin "rust-playground"); 19 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-playground` (bin "rust-playground" test); 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "34a23ac784ea2053600eaa3cd9e3abb66135febdec78c390f9239e5c7de23453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a23ac784ea2053600eaa3cd9e3abb66135febdec78c390f9239e5c7de23453", kill_on_drop: false }`
[INFO] [stdout] 34a23ac784ea2053600eaa3cd9e3abb66135febdec78c390f9239e5c7de23453