[INFO] cloning repository https://github.com/guilgaly/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guilgaly/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilgaly%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilgaly%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12ed35072eb6f5d5e8eaba70ae34c7d8f192961f
[INFO] checking guilgaly/advent-of-code-2020 against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguilgaly%2Fadvent-of-code-2020" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guilgaly/advent-of-code-2020 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guilgaly/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/guilgaly/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/guilgaly/advent-of-code-2020 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/guilgaly/advent-of-code-2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2de65b7cce28fb7f8d941642f6293eef34f6ab9ed31b3f5f51de225fa29c3371
[INFO] running `Command { std: "docker" "start" "-a" "2de65b7cce28fb7f8d941642f6293eef34f6ab9ed31b3f5f51de225fa29c3371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2de65b7cce28fb7f8d941642f6293eef34f6ab9ed31b3f5f51de225fa29c3371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de65b7cce28fb7f8d941642f6293eef34f6ab9ed31b3f5f51de225fa29c3371", kill_on_drop: false }`
[INFO] [stdout] 2de65b7cce28fb7f8d941642f6293eef34f6ab9ed31b3f5f51de225fa29c3371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a682a0c34132605ca08ded5bd592ab9c16cd561dd2ff9caa48e27882d5cad4a6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a682a0c34132605ca08ded5bd592ab9c16cd561dd2ff9caa48e27882d5cad4a6", kill_on_drop: false }`
[INFO] [stderr]     Checking reduce v0.1.3
[INFO] [stderr]     Checking intmap v0.7.0
[INFO] [stderr]    Compiling peg-macros v0.6.3
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking day_20 v0.1.0 (/opt/rustwide/workdir/day_20)
[INFO] [stderr]     Checking day_17 v0.1.0 (/opt/rustwide/workdir/day_17)
[INFO] [stderr]     Checking day_11 v0.1.0 (/opt/rustwide/workdir/day_11)
[INFO] [stderr]     Checking day_22 v0.1.0 (/opt/rustwide/workdir/day_22)
[INFO] [stderr]     Checking day_14 v0.1.0 (/opt/rustwide/workdir/day_14)
[INFO] [stderr]     Checking day_8 v0.1.0 (/opt/rustwide/workdir/day_8)
[INFO] [stderr]     Checking day_12 v0.1.0 (/opt/rustwide/workdir/day_12)
[INFO] [stderr]     Checking day_4 v0.1.0 (/opt/rustwide/workdir/day_4)
[INFO] [stderr]     Checking day_6 v0.1.0 (/opt/rustwide/workdir/day_6)
[INFO] [stderr]     Checking day_23 v0.1.0 (/opt/rustwide/workdir/day_23)
[INFO] [stderr]     Checking day_9 v0.1.0 (/opt/rustwide/workdir/day_9)
[INFO] [stderr]     Checking day_2 v0.1.0 (/opt/rustwide/workdir/day_2)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> day_20/src/main.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{Display, Formatter, Write};
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> day_23/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_21 v0.1.0 (/opt/rustwide/workdir/day_21)
[INFO] [stdout] warning: static is never used: `TEST_INPUT`
[INFO] [stdout]   --> day_20/src/main.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static TEST_INPUT: &str = include_str!("test_input");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]   --> day_6/src/main.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 .reduce(|acc, next| acc.intersection(&next).copied().collect())
[INFO] [stdout]    |                  ^^^^^^ multiple `reduce` found
[INFO] [stdout]    |
[INFO] [stdout]    = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `Map<I, F>`
[INFO] [stdout]    = note: candidate #2 is defined in an impl of the trait `Reduce` for the type `I`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Iterator::reduce(group
[INFO] [stdout] 25 |                 .lines()
[INFO] [stdout] 26 |                 .map(|line| line.chars().collect::<HashSet<char>>()), |acc, next| acc.intersection(&next).copied().collect())
[INFO] [stdout]    |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Reduce::reduce(group
[INFO] [stdout] 25 |                 .lines()
[INFO] [stdout] 26 |                 .map(|line| line.chars().collect::<HashSet<char>>()), |acc, next| acc.intersection(&next).copied().collect())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::reduce::Reduce`
[INFO] [stdout]  --> day_6/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use common::reduce::Reduce;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr]     Checking day_5 v0.1.0 (/opt/rustwide/workdir/day_5)
[INFO] [stderr] error: could not compile `day_6` due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `all`
[INFO] [stdout]  --> day_21/src/main.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use common::itertools::{all, Itertools};
[INFO] [stdout]   |                         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::reduce::Reduce`
[INFO] [stdout]  --> day_21/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::reduce::Reduce;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> day_20/src/main.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 242 |     use super::*;
[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]   --> day_21/src/main.rs:78:29
[INFO] [stdout]    |
[INFO] [stdout] 78 |         .sorted_by_key(|(a, i)| a)
[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: unused variable: `a`
[INFO] [stdout]   --> day_21/src/main.rs:79:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |         .map(|(a, i)| i)
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> day_20/src/main.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{Display, Formatter, Write};
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `potential_ingredients_by_allergen` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> day_21/src/main.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let (allergen, ingredient) = &potential_ingredients_by_allergen
[INFO] [stdout]    |                                       --------------------------------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 42 |         potential_ingredients_by_allergen.remove(**allergen);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^        ---------- immutable borrow later used here
[INFO] [stdout]    |         |
[INFO] [stdout]    |         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `TEST_INPUT`
[INFO] [stdout]   --> day_20/src/main.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | static TEST_INPUT: &str = include_str!("test_input");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a682a0c34132605ca08ded5bd592ab9c16cd561dd2ff9caa48e27882d5cad4a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a682a0c34132605ca08ded5bd592ab9c16cd561dd2ff9caa48e27882d5cad4a6", kill_on_drop: false }`
[INFO] [stdout] a682a0c34132605ca08ded5bd592ab9c16cd561dd2ff9caa48e27882d5cad4a6
