[INFO] cloning repository https://github.com/Ktwu/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ktwu/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKtwu%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKtwu%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a669b6bfa4447052456585d9111af23124872cf
[INFO] testing Ktwu/aoc2020 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKtwu%2Faoc2020" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ktwu/aoc2020 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ktwu/aoc2020
[INFO] finished tweaking git repo https://github.com/Ktwu/aoc2020
[INFO] tweaked toml for git repo https://github.com/Ktwu/aoc2020 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Ktwu/aoc2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum v0.20.0
[INFO] [stderr]   Downloaded strum_macros v0.20.1
[INFO] [stderr]   Downloaded itertools v0.8.2
[INFO] [stderr]   Downloaded anyhow v1.0.34
[INFO] [stderr]   Downloaded syn v1.0.53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22639144b8c91d85f9092783f3d3b94064f35aa4fa4ac717cfb58d2600bff8e7
[INFO] running `Command { std: "docker" "start" "-a" "22639144b8c91d85f9092783f3d3b94064f35aa4fa4ac717cfb58d2600bff8e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22639144b8c91d85f9092783f3d3b94064f35aa4fa4ac717cfb58d2600bff8e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22639144b8c91d85f9092783f3d3b94064f35aa4fa4ac717cfb58d2600bff8e7", kill_on_drop: false }`
[INFO] [stdout] 22639144b8c91d85f9092783f3d3b94064f35aa4fa4ac717cfb58d2600bff8e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbc1c44e983348368f696c8ae0bbb48c422e3cc9baefe22c436619340e62acd4
[INFO] running `Command { std: "docker" "start" "-a" "cbc1c44e983348368f696c8ae0bbb48c422e3cc9baefe22c436619340e62acd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling strum v0.20.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::option::NoneError`
[INFO] [stdout]  --> src/utils/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::option::NoneError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^ no `NoneError` in `option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(map_into_keys_values)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(hash_drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(hash_set_entry)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![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] warning: unused import: `aocbail`
[INFO] [stdout]  --> src/day25.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{aocbail, utils};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AOCError`, `AOCResult`
[INFO] [stdout]  --> src/day25.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use utils::{AOCResult, AOCError};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2020` due to 7 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cbc1c44e983348368f696c8ae0bbb48c422e3cc9baefe22c436619340e62acd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc1c44e983348368f696c8ae0bbb48c422e3cc9baefe22c436619340e62acd4", kill_on_drop: false }`
[INFO] [stdout] cbc1c44e983348368f696c8ae0bbb48c422e3cc9baefe22c436619340e62acd4