[INFO] cloning repository https://github.com/callumquick/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/callumquick/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumquick%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumquick%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3508914d55275c24d85dcd64f90750d04f7f9533
[INFO] checking callumquick/aoc2020/3508914d55275c24d85dcd64f90750d04f7f9533 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumquick%2Faoc2020" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/callumquick/aoc2020 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/callumquick/aoc2020
[INFO] finished tweaking git repo https://github.com/callumquick/aoc2020
[INFO] tweaked toml for git repo https://github.com/callumquick/aoc2020 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/callumquick/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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b854ccb85b033f3aad205dcdb0d13cd8fe98559ba32827c2dbe4846c1773853
[INFO] running `Command { std: "docker" "start" "-a" "4b854ccb85b033f3aad205dcdb0d13cd8fe98559ba32827c2dbe4846c1773853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b854ccb85b033f3aad205dcdb0d13cd8fe98559ba32827c2dbe4846c1773853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b854ccb85b033f3aad205dcdb0d13cd8fe98559ba32827c2dbe4846c1773853", kill_on_drop: false }`
[INFO] [stdout] 4b854ccb85b033f3aad205dcdb0d13cd8fe98559ba32827c2dbe4846c1773853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5001980eab754dee6f0138cad5a5c169571f9e6b75cc4497e8acb2c047ca3c26
[INFO] running `Command { std: "docker" "start" "-a" "5001980eab754dee6f0138cad5a5c169571f9e6b75cc4497e8acb2c047ca3c26", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]    --> src/bin/19.rs:154:60
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 let mut remaining_message: String = message.clone().to_string();
[INFO] [stdout]     |                                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cid` is never read
[INFO] [stdout]   --> src/bin/04.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct PassportData {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     cid: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PassportData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row` and `col` are never read
[INFO] [stdout]   --> src/bin/05.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct BoardingPass {
[INFO] [stdout]    |        ------------ fields in this struct
[INFO] [stdout] 13 |     row: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 14 |     col: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BoardingPass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_next` is never used
[INFO] [stdout]   --> src/bin/23.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | trait LinkedList {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] 10 |     fn get_next(&self, label: u32) -> u32;
[INFO] [stdout] 11 |     fn set_next(&mut self, label: u32, value: u32);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_next` is never used
[INFO] [stdout]   --> src/bin/23.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | trait LinkedList {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] 10 |     fn get_next(&self, label: u32) -> u32;
[INFO] [stdout] 11 |     fn set_next(&mut self, label: u32, value: u32);
[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: field `cid` is never read
[INFO] [stdout]   --> src/bin/04.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct PassportData {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     cid: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PassportData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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: 1 warning emitted
[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: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]    --> src/bin/19.rs:154:60
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 let mut remaining_message: String = message.clone().to_string();
[INFO] [stdout]     |                                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "5001980eab754dee6f0138cad5a5c169571f9e6b75cc4497e8acb2c047ca3c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5001980eab754dee6f0138cad5a5c169571f9e6b75cc4497e8acb2c047ca3c26", kill_on_drop: false }`
[INFO] [stdout] 5001980eab754dee6f0138cad5a5c169571f9e6b75cc4497e8acb2c047ca3c26