[INFO] fetching crate config-loader 2.2.3...
[INFO] testing config-loader-2.2.3 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate config-loader 2.2.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate config-loader 2.2.3 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate config-loader 2.2.3
[INFO] finished tweaking crates.io crate config-loader 2.2.3
[INFO] tweaked toml for crates.io crate config-loader 2.2.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate config-loader 2.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-04-10" "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] 2497f53c5a3938addd7d05300b42e6248bb3b62e6422bd4996382dda0df52c09
[INFO] running `Command { std: "docker" "start" "-a" "2497f53c5a3938addd7d05300b42e6248bb3b62e6422bd4996382dda0df52c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2497f53c5a3938addd7d05300b42e6248bb3b62e6422bd4996382dda0df52c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2497f53c5a3938addd7d05300b42e6248bb3b62e6422bd4996382dda0df52c09", kill_on_drop: false }`
[INFO] [stdout] 2497f53c5a3938addd7d05300b42e6248bb3b62e6422bd4996382dda0df52c09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2022-04-10" "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] a6b2cb61ea277f8312e2cc5e27175b1ebe0b785a5ec60bfc9c7be24d22a1b8c8
[INFO] running `Command { std: "docker" "start" "-a" "a6b2cb61ea277f8312e2cc5e27175b1ebe0b785a5ec60bfc9c7be24d22a1b8c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.0.0-rc.5
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling config-loader v2.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `remove_dir`
[INFO] [stdout]   --> src/app.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |         remove_dir,
[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 beta release channel
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(int_log)]
[INFO] [stdout]    |            ^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `config-loader` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a6b2cb61ea277f8312e2cc5e27175b1ebe0b785a5ec60bfc9c7be24d22a1b8c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b2cb61ea277f8312e2cc5e27175b1ebe0b785a5ec60bfc9c7be24d22a1b8c8", kill_on_drop: false }`
[INFO] [stdout] a6b2cb61ea277f8312e2cc5e27175b1ebe0b785a5ec60bfc9c7be24d22a1b8c8