[INFO] fetching crate nonzero-const-param 0.0.1-alpha.1...
[INFO] testing nonzero-const-param-0.0.1-alpha.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate nonzero-const-param 0.0.1-alpha.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate nonzero-const-param 0.0.1-alpha.1
[INFO] finished tweaking crates.io crate nonzero-const-param 0.0.1-alpha.1
[INFO] tweaked toml for crates.io crate nonzero-const-param 0.0.1-alpha.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nonzero-const-param 0.0.1-alpha.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding zerocopy v0.7.35 (available: v0.8.27)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93abe2bd9ab6205ecaefe2e74e9f2dbed071300d5d24b61026ff65562b3c94aa
[INFO] running `Command { std: "docker" "start" "-a" "93abe2bd9ab6205ecaefe2e74e9f2dbed071300d5d24b61026ff65562b3c94aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93abe2bd9ab6205ecaefe2e74e9f2dbed071300d5d24b61026ff65562b3c94aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93abe2bd9ab6205ecaefe2e74e9f2dbed071300d5d24b61026ff65562b3c94aa", kill_on_drop: false }`
[INFO] [stdout] 93abe2bd9ab6205ecaefe2e74e9f2dbed071300d5d24b61026ff65562b3c94aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be553f12bcd76e36133ff61ab0bae4ca5c068e08d73a4de8c01a522cb290c0bd
[INFO] running `Command { std: "docker" "start" "-a" "be553f12bcd76e36133ff61ab0bae4ca5c068e08d73a4de8c01a522cb290c0bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling nonzero-const-param v0.0.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(adt_const_params, rustc_attrs)]
[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 `nonzero-const-param` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "be553f12bcd76e36133ff61ab0bae4ca5c068e08d73a4de8c01a522cb290c0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be553f12bcd76e36133ff61ab0bae4ca5c068e08d73a4de8c01a522cb290c0bd", kill_on_drop: false }`
[INFO] [stdout] be553f12bcd76e36133ff61ab0bae4ca5c068e08d73a4de8c01a522cb290c0bd
