[INFO] fetching crate kodept-ast 0.4.1...
[INFO] testing kodept-ast-0.4.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate kodept-ast 0.4.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate kodept-ast 0.4.1
[INFO] finished tweaking crates.io crate kodept-ast 0.4.1
[INFO] tweaked toml for crates.io crate kodept-ast 0.4.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kodept-ast 0.4.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 100 packages to latest compatible versions
[INFO] [stderr]       Adding constcat v0.5.1 (available: v0.6.1)
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.0.1)
[INFO] [stderr]       Adding rstest v0.19.0 (available: v0.26.1)
[INFO] [stderr]       Adding strum v0.26.3 (available: v0.27.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c17a11365aae5a941765fe023525468bf6307615acb3e70d52b66d1afda516c
[INFO] running `Command { std: "docker" "start" "-a" "8c17a11365aae5a941765fe023525468bf6307615acb3e70d52b66d1afda516c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c17a11365aae5a941765fe023525468bf6307615acb3e70d52b66d1afda516c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c17a11365aae5a941765fe023525468bf6307615acb3e70d52b66d1afda516c", kill_on_drop: false }`
[INFO] [stdout] 8c17a11365aae5a941765fe023525468bf6307615acb3e70d52b66d1afda516c
[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=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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9841ec043a52566092a2d8cc771a7c3efbf37f76e875cb9d43ab0983d0810bd
[INFO] running `Command { std: "docker" "start" "-a" "f9841ec043a52566092a2d8cc771a7c3efbf37f76e875cb9d43ab0983d0810bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling qcell v0.5.5
[INFO] [stderr]    Compiling constcat v0.5.1
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling slotgraph v0.1.1
[INFO] [stderr]    Compiling derive_more-impl v1.0.0
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling derive_more v1.0.0
[INFO] [stderr]    Compiling kodept-core v0.2.8
[INFO] [stderr]    Compiling kodept-ast v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_specialization)]
[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 `kodept-ast` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f9841ec043a52566092a2d8cc771a7c3efbf37f76e875cb9d43ab0983d0810bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9841ec043a52566092a2d8cc771a7c3efbf37f76e875cb9d43ab0983d0810bd", kill_on_drop: false }`
[INFO] [stdout] f9841ec043a52566092a2d8cc771a7c3efbf37f76e875cb9d43ab0983d0810bd