[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] building B3nac/whatislife_enum against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FB3nac%2Fwhatislife_enum" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/B3nac/whatislife_enum on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/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-4-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd95782273d0856db392c02f795abbd1f82c5d17fbd2a51574a1f510d4bda960
[INFO] running `Command { std: "docker" "start" "-a" "dd95782273d0856db392c02f795abbd1f82c5d17fbd2a51574a1f510d4bda960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd95782273d0856db392c02f795abbd1f82c5d17fbd2a51574a1f510d4bda960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd95782273d0856db392c02f795abbd1f82c5d17fbd2a51574a1f510d4bda960", kill_on_drop: false }`
[INFO] [stdout] dd95782273d0856db392c02f795abbd1f82c5d17fbd2a51574a1f510d4bda960
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9de83af7126e3bb24a58f9164c31fc4cbef5c4f38eddebe760716721f10d676
[INFO] running `Command { std: "docker" "start" "-a" "e9de83af7126e3bb24a58f9164c31fc4cbef5c4f38eddebe760716721f10d676", kill_on_drop: false }`
[INFO] [stderr]    Compiling file_diff v1.0.0
[INFO] [stderr]    Compiling whatislife_enum v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `option_result_contains`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_result_contains)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `whatislife_enum` (bin "whatislife_enum") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e9de83af7126e3bb24a58f9164c31fc4cbef5c4f38eddebe760716721f10d676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9de83af7126e3bb24a58f9164c31fc4cbef5c4f38eddebe760716721f10d676", kill_on_drop: false }`
[INFO] [stdout] e9de83af7126e3bb24a58f9164c31fc4cbef5c4f38eddebe760716721f10d676
