[INFO] fetching crate copper 0.1.0...
[INFO] testing copper-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate copper 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate copper 0.1.0
[INFO] finished tweaking crates.io crate copper 0.1.0
[INFO] tweaked toml for crates.io crate copper 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate copper 0.1.0 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] crate crates.io crate copper 0.1.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f77675579436a4008252c71d6166e4e61f03e24eb0f05997a148cea55ec34196
[INFO] running `Command { std: "docker" "start" "-a" "f77675579436a4008252c71d6166e4e61f03e24eb0f05997a148cea55ec34196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f77675579436a4008252c71d6166e4e61f03e24eb0f05997a148cea55ec34196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f77675579436a4008252c71d6166e4e61f03e24eb0f05997a148cea55ec34196", kill_on_drop: false }`
[INFO] [stdout] f77675579436a4008252c71d6166e4e61f03e24eb0f05997a148cea55ec34196
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9d92f58425b34bfe399424479f313eeb0704458e2f686f6b1bfb6203acd6eb81
[INFO] running `Command { std: "docker" "start" "-a" "9d92f58425b34bfe399424479f313eeb0704458e2f686f6b1bfb6203acd6eb81", kill_on_drop: false }`
[INFO] [stderr]    Compiling dyn-clone v1.0.16
[INFO] [stderr]    Compiling copper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]   |
[INFO] [stdout]   = help: use the new name `dead_code`
[INFO] [stdout]   = note: requested on the command line with `-W unused_tuple_struct_fields`
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 <https://rust-lang.github.io/rfcs/3535-constants-in-patterns.html> for more information
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-W pointer_structural_match`
[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(int_roundings)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]   --> src/props/mod.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |         self.push_new_prop(self::add::Add::new(x, y, s))
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-W unused-qualifications`
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 58 -         self.push_new_prop(self::add::Add::new(x, y, s))
[INFO] [stdout] 58 +         self.push_new_prop(add::Add::new(x, y, s))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]   --> src/props/mod.rs:63:28
[INFO] [stdout]    |
[INFO] [stdout] 63 |         self.push_new_prop(self::sum::Sum::new(xs, s))
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 63 -         self.push_new_prop(self::sum::Sum::new(xs, s))
[INFO] [stdout] 63 +         self.push_new_prop(sum::Sum::new(xs, s))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]   --> src/props/mod.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |         self.push_new_prop(self::eq::Equals::new(x, y))
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 68 -         self.push_new_prop(self::eq::Equals::new(x, y))
[INFO] [stdout] 68 +         self.push_new_prop(eq::Equals::new(x, y))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]   --> src/props/mod.rs:73:28
[INFO] [stdout]    |
[INFO] [stdout] 73 |         self.push_new_prop(self::leq::LessThanOrEquals::new(x, y))
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 73 -         self.push_new_prop(self::leq::LessThanOrEquals::new(x, y))
[INFO] [stdout] 73 +         self.push_new_prop(leq::LessThanOrEquals::new(x, y))
[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 `copper` (lib) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9d92f58425b34bfe399424479f313eeb0704458e2f686f6b1bfb6203acd6eb81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d92f58425b34bfe399424479f313eeb0704458e2f686f6b1bfb6203acd6eb81", kill_on_drop: false }`
[INFO] [stdout] 9d92f58425b34bfe399424479f313eeb0704458e2f686f6b1bfb6203acd6eb81