[INFO] cloning repository https://github.com/B3nac/whatislife_enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/B3nac/whatislife_enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FB3nac%2Fwhatislife_enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FB3nac%2Fwhatislife_enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1415b2dc03f0fc8d0403ba9130bb523509942e1d
[INFO] testing B3nac/whatislife_enum against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FB3nac%2Fwhatislife_enum" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/B3nac/whatislife_enum on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/B3nac/whatislife_enum
[INFO] finished tweaking git repo https://github.com/B3nac/whatislife_enum
[INFO] tweaked toml for git repo https://github.com/B3nac/whatislife_enum written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/B3nac/whatislife_enum already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae9f48cd4cf1bb4390633660b07877403dfbf7c14437ca27ffe63512c4e2b145
[INFO] running `Command { std: "docker" "start" "-a" "ae9f48cd4cf1bb4390633660b07877403dfbf7c14437ca27ffe63512c4e2b145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae9f48cd4cf1bb4390633660b07877403dfbf7c14437ca27ffe63512c4e2b145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9f48cd4cf1bb4390633660b07877403dfbf7c14437ca27ffe63512c4e2b145", kill_on_drop: false }`
[INFO] [stdout] ae9f48cd4cf1bb4390633660b07877403dfbf7c14437ca27ffe63512c4e2b145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b863fafacfb602b6df4239e1174bbc24585abce4d178aac83dc881c9e73f868
[INFO] running `Command { std: "docker" "start" "-a" "6b863fafacfb602b6df4239e1174bbc24585abce4d178aac83dc881c9e73f868", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling file_diff v1.0.0
[INFO] [stderr]    Compiling whatislife_enum v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.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 `whatislife_enum` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6b863fafacfb602b6df4239e1174bbc24585abce4d178aac83dc881c9e73f868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b863fafacfb602b6df4239e1174bbc24585abce4d178aac83dc881c9e73f868", kill_on_drop: false }`
[INFO] [stdout] 6b863fafacfb602b6df4239e1174bbc24585abce4d178aac83dc881c9e73f868