[INFO] fetching crate iffi 0.0.2...
[INFO] testing iffi-0.0.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate iffi 0.0.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate iffi 0.0.2
[INFO] finished tweaking crates.io crate iffi 0.0.2
[INFO] tweaked toml for crates.io crate iffi 0.0.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate iffi 0.0.2 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 14 packages to latest compatible versions
[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] f75a74e140a07e4865e1591c2ea853ab97e7b645941e250579a4e2b91b6807a5
[INFO] running `Command { std: "docker" "start" "-a" "f75a74e140a07e4865e1591c2ea853ab97e7b645941e250579a4e2b91b6807a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f75a74e140a07e4865e1591c2ea853ab97e7b645941e250579a4e2b91b6807a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75a74e140a07e4865e1591c2ea853ab97e7b645941e250579a4e2b91b6807a5", kill_on_drop: false }`
[INFO] [stdout] f75a74e140a07e4865e1591c2ea853ab97e7b645941e250579a4e2b91b6807a5
[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] 513dc9d7368cb3642547fe5b028321e287b9520fa6f7937aa17eb244c029c1ba
[INFO] running `Command { std: "docker" "start" "-a" "513dc9d7368cb3642547fe5b028321e287b9520fa6f7937aa17eb244c029c1ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling bytemuck_derive v1.10.1
[INFO] [stderr]    Compiling iffi-macros v0.0.1
[INFO] [stderr]    Compiling transmute v0.1.1
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling thiserror-impl-no-std v2.0.2
[INFO] [stderr]    Compiling concat-arrays v0.1.2
[INFO] [stderr]    Compiling derive_deref v1.1.1
[INFO] [stderr]    Compiling thiserror-no-std v2.0.2
[INFO] [stderr]    Compiling iffi v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.27s
[INFO] running `Command { std: "docker" "inspect" "513dc9d7368cb3642547fe5b028321e287b9520fa6f7937aa17eb244c029c1ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "513dc9d7368cb3642547fe5b028321e287b9520fa6f7937aa17eb244c029c1ba", kill_on_drop: false }`
[INFO] [stdout] 513dc9d7368cb3642547fe5b028321e287b9520fa6f7937aa17eb244c029c1ba
[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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50089d60f6cd4a94e195feb90d7d1af5984e01315c2419e2c6def67811440cfb
[INFO] running `Command { std: "docker" "start" "-a" "50089d60f6cd4a94e195feb90d7d1af5984e01315c2419e2c6def67811440cfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling iffi v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]    --> src/lib.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |         struct A {
[INFO] [stdout]     |                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]    --> src/lib.rs:164:16
[INFO] [stdout]     |
[INFO] [stdout] 164 |         struct A<T: Iffi, U> {
[INFO] [stdout]     |                ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "50089d60f6cd4a94e195feb90d7d1af5984e01315c2419e2c6def67811440cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50089d60f6cd4a94e195feb90d7d1af5984e01315c2419e2c6def67811440cfb", kill_on_drop: false }`
[INFO] [stdout] 50089d60f6cd4a94e195feb90d7d1af5984e01315c2419e2c6def67811440cfb
[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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1160c1eee7a7bc59fc0d813c8f3eaabdddca8c58ad2aaa8948d4b1c2705cf88e
[INFO] running `Command { std: "docker" "start" "-a" "1160c1eee7a7bc59fc0d813c8f3eaabdddca8c58ad2aaa8948d4b1c2705cf88e", kill_on_drop: false }`
[INFO] [stderr] warning: struct `A` is never constructed
[INFO] [stderr]    --> src/lib.rs:135:16
[INFO] [stderr]     |
[INFO] [stderr] 135 |         struct A {
[INFO] [stderr]     |                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `A` is never constructed
[INFO] [stderr]    --> src/lib.rs:164:16
[INFO] [stderr]     |
[INFO] [stderr] 164 |         struct A<T: Iffi, U> {
[INFO] [stderr]     |                ^
[INFO] [stderr] 
[INFO] [stderr] warning: `iffi` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iffi-b9142b3609bc3924)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]    Doc-tests iffi
[INFO] [stdout] test tests::conversions_fails ... ok
[INFO] [stdout] test tests::derive_iffi ... ok
[INFO] [stdout] test tests::derive_generics ... ok
[INFO] [stdout] test tests::nested ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/maybe_invalid.rs - maybe_invalid::MaybeInvalid<T>::assume_valid (line 42) - compile ... ok
[INFO] [stdout] test src/maybe_invalid.rs - maybe_invalid::MaybeInvalid<T>::into_inner (line 92) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1160c1eee7a7bc59fc0d813c8f3eaabdddca8c58ad2aaa8948d4b1c2705cf88e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1160c1eee7a7bc59fc0d813c8f3eaabdddca8c58ad2aaa8948d4b1c2705cf88e", kill_on_drop: false }`
[INFO] [stdout] 1160c1eee7a7bc59fc0d813c8f3eaabdddca8c58ad2aaa8948d4b1c2705cf88e