[INFO] fetching crate grandeur 0.1.0...
[INFO] testing grandeur-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate grandeur 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate grandeur 0.1.0
[INFO] finished tweaking crates.io crate grandeur 0.1.0
[INFO] tweaked toml for crates.io crate grandeur 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grandeur 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding hashbrown v0.13.2 (available: v0.16.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b377f38576811080f1b3013f2e1a528f69c03b93f55c0cb4effe2fc2810ea11a
[INFO] running `Command { std: "docker" "start" "-a" "b377f38576811080f1b3013f2e1a528f69c03b93f55c0cb4effe2fc2810ea11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b377f38576811080f1b3013f2e1a528f69c03b93f55c0cb4effe2fc2810ea11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b377f38576811080f1b3013f2e1a528f69c03b93f55c0cb4effe2fc2810ea11a", kill_on_drop: false }`
[INFO] [stdout] b377f38576811080f1b3013f2e1a528f69c03b93f55c0cb4effe2fc2810ea11a
[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=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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 792c976a33696ff29cd597fdddcb7aae78e0911fea70164dd58d581d0dad5f3a
[INFO] running `Command { std: "docker" "start" "-a" "792c976a33696ff29cd597fdddcb7aae78e0911fea70164dd58d581d0dad5f3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling grandeur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/node.rs:64:30
[INFO] [stdout]    |
[INFO] [stdout] 64 |         self.try_map::<_, _, !>(|d| Ok(f(d))).unwrap()
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout]    = help: add `#![feature(never_type)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]    --> src/node.rs:128:36
[INFO] [stdout]     |
[INFO] [stdout] 128 |         self.try_visit_map::<_, _, !>(|e| Ok(f(e))).unwrap()
[INFO] [stdout]     |                                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout]     = help: add `#![feature(never_type)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-08-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]    --> src/node.rs:149:41
[INFO] [stdout]     |
[INFO] [stdout] 149 |         self.try_visit_apply::<_, _, _, !>(other, |a, b| Ok(f(a, b)))
[INFO] [stdout]     |                                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout]     = help: add `#![feature(never_type)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-08-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]    --> src/node.rs:219:40
[INFO] [stdout]     |
[INFO] [stdout] 219 |         self.try_apply_prod::<_, _, _, !>(other, |a, b| Ok(f(a, b)))
[INFO] [stdout]     |                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout]     = help: add `#![feature(never_type)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-08-27; 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 `grandeur` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "792c976a33696ff29cd597fdddcb7aae78e0911fea70164dd58d581d0dad5f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792c976a33696ff29cd597fdddcb7aae78e0911fea70164dd58d581d0dad5f3a", kill_on_drop: false }`
[INFO] [stdout] 792c976a33696ff29cd597fdddcb7aae78e0911fea70164dd58d581d0dad5f3a