[INFO] fetching crate zoon 0.1.6...
[INFO] testing zoon-0.1.6 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate zoon 0.1.6 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zoon 0.1.6 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54b801d55f4394102dedc21b75ee3c56009f8edabe4e882b2b190868ab8c1a8f
[INFO] running `Command { std: "docker" "start" "-a" "54b801d55f4394102dedc21b75ee3c56009f8edabe4e882b2b190868ab8c1a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54b801d55f4394102dedc21b75ee3c56009f8edabe4e882b2b190868ab8c1a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54b801d55f4394102dedc21b75ee3c56009f8edabe4e882b2b190868ab8c1a8f", kill_on_drop: false }`
[INFO] [stdout] 54b801d55f4394102dedc21b75ee3c56009f8edabe4e882b2b190868ab8c1a8f
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fc81678e09265060beb1572e4d8696bd103998ce3aa1b446a96283f5d756af5
[INFO] running `Command { std: "docker" "start" "-a" "9fc81678e09265060beb1572e4d8696bd103998ce3aa1b446a96283f5d756af5", kill_on_drop: false }`
[INFO] [stderr]    Compiling zoon v0.1.6 (/opt/rustwide/workdir)
[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]     = help: add `#![feature(const_from)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zoon` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9fc81678e09265060beb1572e4d8696bd103998ce3aa1b446a96283f5d756af5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fc81678e09265060beb1572e4d8696bd103998ce3aa1b446a96283f5d756af5", kill_on_drop: false }`
[INFO] [stdout] 9fc81678e09265060beb1572e4d8696bd103998ce3aa1b446a96283f5d756af5