[INFO] cloning repository https://github.com/sdunifon/advent-of-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdunifon/advent-of-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdunifon%2Fadvent-of-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdunifon%2Fadvent-of-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 213fab4bc3d0d23eb878892870a227e263bf6ce4
[INFO] checking sdunifon/advent-of-code against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdunifon%2Fadvent-of-code" "/workspace/builds/worker-77/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-77/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdunifon/advent-of-code 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/sdunifon/advent-of-code
[INFO] finished tweaking git repo https://github.com/sdunifon/advent-of-code
[INFO] tweaked toml for git repo https://github.com/sdunifon/advent-of-code written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] crate git repo https://github.com/sdunifon/advent-of-code 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] [stdout] 5fc244f378d61e94eef2a912fd882bf245667cdd87bab0315ac660542b6dcade
[INFO] running `Command { std: "docker" "start" "-a" "5fc244f378d61e94eef2a912fd882bf245667cdd87bab0315ac660542b6dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc244f378d61e94eef2a912fd882bf245667cdd87bab0315ac660542b6dcade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc244f378d61e94eef2a912fd882bf245667cdd87bab0315ac660542b6dcade", kill_on_drop: false }`
[INFO] [stdout] 5fc244f378d61e94eef2a912fd882bf245667cdd87bab0315ac660542b6dcade
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] c0c2c89c0c60d79936643a43ec9222c3259f00daed70f054f38528e39a6c5530
[INFO] running `Command { std: "docker" "start" "-a" "c0c2c89c0c60d79936643a43ec9222c3259f00daed70f054f38528e39a6c5530", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking hashbrown v0.9.1
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling encoding_rs v0.8.26
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[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
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[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking tinyvec v1.1.0
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[INFO] [stderr]    Compiling quote v1.0.7
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[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling mime_guess v2.0.3
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[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]     Checking tokio v0.2.23
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[INFO] [stderr]     Checking advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: mismatched closing delimiter: `}`
[INFO] [stdout]   --> src/bin/6/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             .fold(HashSet::new(), |acc, set| {
[INFO] [stdout]    |                                              - closing delimiter possibly meant for this
[INFO] [stdout] 34 |                 acc.union(&set.0).collect::<HashSet<&char>>(
[INFO] [stdout]    |                                                            - unclosed delimiter
[INFO] [stdout] 35 |             })
[INFO] [stdout]    |             ^ mismatched closing delimiter
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter::FromIterator`
[INFO] [stdout]  --> src/bin/6/main.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashSet, iter::FromIterator};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: mismatched closing delimiter: `}`
[INFO] [stdout]   --> src/bin/6/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             .fold(HashSet::new(), |acc, set| {
[INFO] [stdout]    |                                              - closing delimiter possibly meant for this
[INFO] [stdout] 34 |                 acc.union(&set.0).collect::<HashSet<&char>>(
[INFO] [stdout]    |                                                            - unclosed delimiter
[INFO] [stdout] 35 |             })
[INFO] [stdout]    |             ^ mismatched closing delimiter
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `iter::FromIterator`
[INFO] [stdout]  --> src/bin/6/main.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashSet, iter::FromIterator};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/3/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/3/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(array_map)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/bin/3/main.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/3/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/3/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(array_map)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::Error`
[INFO] [stdout]  --> src/bin/1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use reqwest::Error;
[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: unused import: `reqwest::Error`
[INFO] [stdout]  --> src/bin/1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use reqwest::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent` due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/6/main.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 | /                 acc.union(&set.0).collect::<HashSet<&char>>(
[INFO] [stdout] 35 | |             })
[INFO] [stdout]    | |_____________^ expected `char`, found `&char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `HashSet<char>`
[INFO] [stdout]               found struct `HashSet<&char>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `collect` exists for struct `HashSet<char>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/bin/6/main.rs:36:14
[INFO] [stdout]     |
[INFO] [stdout] 36  |               .collect()
[INFO] [stdout]     |                ^^^^^^^ method cannot be called on `HashSet<char>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `HashSet<char>: Iterator`
[INFO] [stdout]             which is required by `&mut HashSet<char>: Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/6/main.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 | /                 acc.union(&set.0).collect::<HashSet<&char>>(
[INFO] [stdout] 35 | |             })
[INFO] [stdout]    | |_____________^ expected `char`, found `&char`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `HashSet<char>`
[INFO] [stdout]               found struct `HashSet<&char>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `collect` exists for struct `HashSet<char>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/bin/6/main.rs:36:14
[INFO] [stdout]     |
[INFO] [stdout] 36  |               .collect()
[INFO] [stdout]     |                ^^^^^^^ method cannot be called on `HashSet<char>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `HashSet<char>: Iterator`
[INFO] [stdout]             which is required by `&mut HashSet<char>: Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c0c2c89c0c60d79936643a43ec9222c3259f00daed70f054f38528e39a6c5530", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c2c89c0c60d79936643a43ec9222c3259f00daed70f054f38528e39a6c5530", kill_on_drop: false }`
[INFO] [stdout] c0c2c89c0c60d79936643a43ec9222c3259f00daed70f054f38528e39a6c5530
