[INFO] fetching crate rust-ad-core 0.8.0... [INFO] testing rust-ad-core-0.8.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1 [INFO] extracting crate rust-ad-core 0.8.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate rust-ad-core 0.8.0 [INFO] finished tweaking crates.io crate rust-ad-core 0.8.0 [INFO] tweaked toml for crates.io crate rust-ad-core 0.8.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate rust-ad-core 0.8.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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 syn v1.0.109 (available: v2.0.106) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 43f57001d6fc823308a48687b5dceea848ba3264435400907737d177cf432ee4 [INFO] running `Command { std: "docker" "start" "-a" "43f57001d6fc823308a48687b5dceea848ba3264435400907737d177cf432ee4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "43f57001d6fc823308a48687b5dceea848ba3264435400907737d177cf432ee4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43f57001d6fc823308a48687b5dceea848ba3264435400907737d177cf432ee4", kill_on_drop: false }` [INFO] [stdout] 43f57001d6fc823308a48687b5dceea848ba3264435400907737d177cf432ee4 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4a074809ce9f5a2166b088349cc023d4fba44e89de7bdcf9616f4fe29caaf943 [INFO] running `Command { std: "docker" "start" "-a" "4a074809ce9f5a2166b088349cc023d4fba44e89de7bdcf9616f4fe29caaf943", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-ident v1.0.19 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling const_format_proc_macros v0.2.34 [INFO] [stderr] Compiling const_format v0.2.34 [INFO] [stderr] Compiling rust-ad-consts v0.8.0 [INFO] [stderr] Compiling rust-ad-core-macros v0.8.0 [INFO] [stderr] Compiling rust-ad-core v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0658]: use of unstable library feature `unsized_const_params` [INFO] [stdout] --> src/derivatives/mod.rs:233:12 [INFO] [stdout] | [INFO] [stdout] 233 | pub fn fgd( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: add `#![feature(unsized_const_params)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-25; consider upgrading it if it is out of date [INFO] [stdout] = note: required for `&'static str` to implement `ConstParamTy_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0741]: `&'static [for<'a> fn(&'a [derivatives::Arg]) -> std::string::String]` can't be used as a const parameter type [INFO] [stdout] --> src/derivatives/mod.rs:233:70 [INFO] [stdout] | [INFO] [stdout] 233 | pub fn fgd( [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `for<'a> fn(&'a [derivatives::Arg]) -> std::string::String` must implement `ConstParamTy_`, but it does not [INFO] [stdout] = note: `[for<'a> fn(&'a [derivatives::Arg]) -> std::string::String]` must implement `ConstParamTy_`, but it does not [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `unsized_const_params` [INFO] [stdout] --> src/derivatives/mod.rs:342:12 [INFO] [stdout] | [INFO] [stdout] 342 | pub fn rgd( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: add `#![feature(unsized_const_params)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-25; consider upgrading it if it is out of date [INFO] [stdout] = note: required for `&'static str` to implement `ConstParamTy_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0741]: `&'static [for<'a> fn(&'a [derivatives::Arg]) -> std::string::String]` can't be used as a const parameter type [INFO] [stdout] --> src/derivatives/mod.rs:342:70 [INFO] [stdout] | [INFO] [stdout] 342 | pub fn rgd( [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `for<'a> fn(&'a [derivatives::Arg]) -> std::string::String` must implement `ConstParamTy_`, but it does not [INFO] [stdout] = note: `[for<'a> fn(&'a [derivatives::Arg]) -> std::string::String]` must implement `ConstParamTy_`, but it does not [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0658, E0741. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-ad-core` (lib) due to 4 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "4a074809ce9f5a2166b088349cc023d4fba44e89de7bdcf9616f4fe29caaf943", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a074809ce9f5a2166b088349cc023d4fba44e89de7bdcf9616f4fe29caaf943", kill_on_drop: false }` [INFO] [stdout] 4a074809ce9f5a2166b088349cc023d4fba44e89de7bdcf9616f4fe29caaf943