[INFO] fetching crate lcrs 0.1.1...
[INFO] testing lcrs-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate lcrs 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate lcrs 0.1.1
[INFO] finished tweaking crates.io crate lcrs 0.1.1
[INFO] tweaked toml for crates.io crate lcrs 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lcrs 0.1.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lcrs 0.1.1 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 358ea2daf387b2bc00f47c5e9b2d474cc4069b22f4232c0502ea2b4336827ba3
[INFO] running `Command { std: "docker" "start" "-a" "358ea2daf387b2bc00f47c5e9b2d474cc4069b22f4232c0502ea2b4336827ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "358ea2daf387b2bc00f47c5e9b2d474cc4069b22f4232c0502ea2b4336827ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "358ea2daf387b2bc00f47c5e9b2d474cc4069b22f4232c0502ea2b4336827ba3", kill_on_drop: false }`
[INFO] [stdout] 358ea2daf387b2bc00f47c5e9b2d474cc4069b22f4232c0502ea2b4336827ba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2c52e9d37a284cbcab07da593c5cb48de44d4b0657725c20c09dd12fefec7de
[INFO] running `Command { std: "docker" "start" "-a" "d2c52e9d37a284cbcab07da593c5cb48de44d4b0657725c20c09dd12fefec7de", kill_on_drop: false }`
[INFO] [stderr]    Compiling lcrs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/ulc.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lcrs` (bin "ulc") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d2c52e9d37a284cbcab07da593c5cb48de44d4b0657725c20c09dd12fefec7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2c52e9d37a284cbcab07da593c5cb48de44d4b0657725c20c09dd12fefec7de", kill_on_drop: false }`
[INFO] [stdout] d2c52e9d37a284cbcab07da593c5cb48de44d4b0657725c20c09dd12fefec7de
