[INFO] cloning repository https://github.com/isavegas/aoc_2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/isavegas/aoc_2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisavegas%2Faoc_2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisavegas%2Faoc_2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeac4462de4f35d150839241f24e84518b8dece4
[INFO] testing isavegas/aoc_2019 against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisavegas%2Faoc_2019" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/isavegas/aoc_2019 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/isavegas/aoc_2019
[INFO] finished tweaking git repo https://github.com/isavegas/aoc_2019
[INFO] tweaked toml for git repo https://github.com/isavegas/aoc_2019 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/isavegas/aoc_2019 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]     Updating git repository `https://github.com/isavegas/aoc_core`
[INFO] [stderr]     Updating git repository `https://github.com/isavegas/intcode`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded automod v1.0.2
[INFO] [stderr]   Downloaded packed_simd_2 v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 4c0f0e0a94ca62675d7ef802d76069a3cd4566355c0ded2550f5cb447a0d73d3
[INFO] running `Command { std: "docker" "start" "-a" "4c0f0e0a94ca62675d7ef802d76069a3cd4566355c0ded2550f5cb447a0d73d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c0f0e0a94ca62675d7ef802d76069a3cd4566355c0ded2550f5cb447a0d73d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c0f0e0a94ca62675d7ef802d76069a3cd4566355c0ded2550f5cb447a0d73d3", kill_on_drop: false }`
[INFO] [stdout] 4c0f0e0a94ca62675d7ef802d76069a3cd4566355c0ded2550f5cb447a0d73d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", 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] 1be8c238357d2ae4f4e6790e3b0eff2c4ea04ea449773de4f5beffd0ee9e21b9
[INFO] running `Command { std: "docker" "start" "-a" "1be8c238357d2ae4f4e6790e3b0eff2c4ea04ea449773de4f5beffd0ee9e21b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling packed_simd_2 v0.3.7
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling intcode v1.0.0 (https://github.com/isavegas/intcode?tag=v1.0.0#a80167e2)
[INFO] [stderr]    Compiling automod v1.0.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/packed_simd_2-0.3.7/src/lib.rs:214:1
[INFO] [stdout]     |
[INFO] [stdout] 214 | / #![feature(
[INFO] [stdout] 215 | |     adt_const_params,
[INFO] [stdout] 216 | |     repr_simd,
[INFO] [stdout] 217 | |     rustc_attrs,
[INFO] [stdout] ...   |
[INFO] [stdout] 226 | |     custom_inner_attributes,
[INFO] [stdout] 227 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aoc_core v0.1.9 (https://github.com/isavegas/aoc_core?tag=v0.1.9#4c65938a)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/aoc_core-310e7a230b86f380/4c65938/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_result_contains)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc_core` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1be8c238357d2ae4f4e6790e3b0eff2c4ea04ea449773de4f5beffd0ee9e21b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1be8c238357d2ae4f4e6790e3b0eff2c4ea04ea449773de4f5beffd0ee9e21b9", kill_on_drop: false }`
[INFO] [stdout] 1be8c238357d2ae4f4e6790e3b0eff2c4ea04ea449773de4f5beffd0ee9e21b9