[INFO] cloning repository https://github.com/Luminiscental/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Luminiscental/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuminiscental%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuminiscental%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8794442508d79cfdeea835a0e821dd10f286af5
[INFO] testing Luminiscental/aoc2021 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuminiscental%2Faoc2021" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Luminiscental/aoc2021 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] removed /workspace/builds/worker-4/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Luminiscental/aoc2021
[INFO] finished tweaking git repo https://github.com/Luminiscental/aoc2021
[INFO] tweaked toml for git repo https://github.com/Luminiscental/aoc2021 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Luminiscental/aoc2021 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 31e822128bca8fdcee7db6bec4d3c25628ae173e21d222d2e5fbd932a46dbbb2
[INFO] running `Command { std: "docker" "start" "-a" "31e822128bca8fdcee7db6bec4d3c25628ae173e21d222d2e5fbd932a46dbbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31e822128bca8fdcee7db6bec4d3c25628ae173e21d222d2e5fbd932a46dbbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e822128bca8fdcee7db6bec4d3c25628ae173e21d222d2e5fbd932a46dbbb2", kill_on_drop: false }`
[INFO] [stdout] 31e822128bca8fdcee7db6bec4d3c25628ae173e21d222d2e5fbd932a46dbbb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] de8c382abc440692a33fd36b970d1799543b46e6d5442217322d86112f57f0a8
[INFO] running `Command { std: "docker" "start" "-a" "de8c382abc440692a33fd36b970d1799543b46e6d5442217322d86112f57f0a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling futures-io v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling tokio v1.15.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tokio-util v0.6.9
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.9
[INFO] [stderr]    Compiling hyper v0.14.16
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.8
[INFO] [stderr]    Compiling aoc2021 v0.1.0 (/opt/rustwide/workdir)
[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(test)]
[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(int_abs_diff)]
[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(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `aoc2021` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "de8c382abc440692a33fd36b970d1799543b46e6d5442217322d86112f57f0a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de8c382abc440692a33fd36b970d1799543b46e6d5442217322d86112f57f0a8", kill_on_drop: false }`
[INFO] [stdout] de8c382abc440692a33fd36b970d1799543b46e6d5442217322d86112f57f0a8