[INFO] fetching crate zoon 0.1.6...
[INFO] testing zoon-0.1.6 against 1.90.0 for beta-1.91-3
[INFO] extracting crate zoon 0.1.6 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate zoon 0.1.6
[INFO] finished tweaking crates.io crate zoon 0.1.6
[INFO] tweaked toml for crates.io crate zoon 0.1.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zoon 0.1.6 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 zoon 0.1.6 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 09aca3f39dc076a0908d33a847f718b8685fc80c4b36a4a79f5846652a66ac10
[INFO] running `Command { std: "docker" "start" "-a" "09aca3f39dc076a0908d33a847f718b8685fc80c4b36a4a79f5846652a66ac10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09aca3f39dc076a0908d33a847f718b8685fc80c4b36a4a79f5846652a66ac10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09aca3f39dc076a0908d33a847f718b8685fc80c4b36a4a79f5846652a66ac10", kill_on_drop: false }`
[INFO] [stdout] 09aca3f39dc076a0908d33a847f718b8685fc80c4b36a4a79f5846652a66ac10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5b29f64bc2e47ef9391afd5e2dbb9fff596460b7695b72b211e3d8d9b68ef997
[INFO] running `Command { std: "docker" "start" "-a" "5b29f64bc2e47ef9391afd5e2dbb9fff596460b7695b72b211e3d8d9b68ef997", kill_on_drop: false }`
[INFO] [stderr]    Compiling zoon v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type, const_trait_impl)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable const library feature `const_from`
[INFO] [stdout]    --> src/state/state.rs:228:19
[INFO] [stdout]     |
[INFO] [stdout] 228 |     impl<T> const From<T> for State<T> {
[INFO] [stdout]     |                   ^^^^^^^ trait is not stable as const yet
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #143773 <https://github.com/rust-lang/rust/issues/143773> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zoon` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5b29f64bc2e47ef9391afd5e2dbb9fff596460b7695b72b211e3d8d9b68ef997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b29f64bc2e47ef9391afd5e2dbb9fff596460b7695b72b211e3d8d9b68ef997", kill_on_drop: false }`
[INFO] [stdout] 5b29f64bc2e47ef9391afd5e2dbb9fff596460b7695b72b211e3d8d9b68ef997