[INFO] fetching crate metatrait 0.0.0-alpha.1...
[INFO] testing metatrait-0.0.0-alpha.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate metatrait 0.0.0-alpha.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate metatrait 0.0.0-alpha.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate metatrait 0.0.0-alpha.1
[INFO] tweaked toml for crates.io crate metatrait 0.0.0-alpha.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate metatrait 0.0.0-alpha.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate metatrait 0.0.0-alpha.1 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 871922c565e0b8ff8f345aa49aba650493e002e6e114d786f63f3db6bb42ab11
[INFO] running `Command { std: "docker" "start" "-a" "871922c565e0b8ff8f345aa49aba650493e002e6e114d786f63f3db6bb42ab11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "871922c565e0b8ff8f345aa49aba650493e002e6e114d786f63f3db6bb42ab11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871922c565e0b8ff8f345aa49aba650493e002e6e114d786f63f3db6bb42ab11", kill_on_drop: false }`
[INFO] [stdout] 871922c565e0b8ff8f345aa49aba650493e002e6e114d786f63f3db6bb42ab11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59b497863e9ae3c90db90635cd5e8bc70eae32f0c7783e9770e25336f74acef5
[INFO] running `Command { std: "docker" "start" "-a" "59b497863e9ae3c90db90635cd5e8bc70eae32f0c7783e9770e25336f74acef5", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling ghost v0.1.17
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling metatrait v0.0.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.87s
[INFO] running `Command { std: "docker" "inspect" "59b497863e9ae3c90db90635cd5e8bc70eae32f0c7783e9770e25336f74acef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59b497863e9ae3c90db90635cd5e8bc70eae32f0c7783e9770e25336f74acef5", kill_on_drop: false }`
[INFO] [stdout] 59b497863e9ae3c90db90635cd5e8bc70eae32f0c7783e9770e25336f74acef5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d526aff4462a0b6e6223049fefddfa4a061c255886ae12610b297084a237878b
[INFO] running `Command { std: "docker" "start" "-a" "d526aff4462a0b6e6223049fefddfa4a061c255886ae12610b297084a237878b", kill_on_drop: false }`
[INFO] [stderr]    Compiling metatrait v0.0.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Phantoms` is never constructed
[INFO] [stdout]  --> examples/phantoms.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Phantoms;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "d526aff4462a0b6e6223049fefddfa4a061c255886ae12610b297084a237878b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d526aff4462a0b6e6223049fefddfa4a061c255886ae12610b297084a237878b", kill_on_drop: false }`
[INFO] [stdout] d526aff4462a0b6e6223049fefddfa4a061c255886ae12610b297084a237878b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8fc4d9b23b0f085a1ae7063ee0ec7e4ee39b15e715993c37393f91c2cf43f8c4
[INFO] running `Command { std: "docker" "start" "-a" "8fc4d9b23b0f085a1ae7063ee0ec7e4ee39b15e715993c37393f91c2cf43f8c4", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Phantoms` is never constructed
[INFO] [stderr]  --> examples/phantoms.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Phantoms;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `metatrait` (example "phantoms") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/metatrait-03620435ac050ff1)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test cat::instances::composition::test::test ... ok
[INFO] [stdout] test cat::instances::futures::test::test ... ok
[INFO] [stdout] test cat::instances::lazy::test::test ... ok
[INFO] [stdout] test cat::instances::option::test::test ... ok
[INFO] [stdout] test cat::instances::result::test::test ... ok
[INFO] [stderr]    Doc-tests metatrait
[INFO] [stdout] test cat::instances::verbatim::test::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8fc4d9b23b0f085a1ae7063ee0ec7e4ee39b15e715993c37393f91c2cf43f8c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc4d9b23b0f085a1ae7063ee0ec7e4ee39b15e715993c37393f91c2cf43f8c4", kill_on_drop: false }`
[INFO] [stdout] 8fc4d9b23b0f085a1ae7063ee0ec7e4ee39b15e715993c37393f91c2cf43f8c4