[INFO] fetching crate mendes-derive 0.0.6...
[INFO] testing mendes-derive-0.0.6 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mendes-derive 0.0.6 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate mendes-derive 0.0.6
[INFO] finished tweaking crates.io crate mendes-derive 0.0.6
[INFO] tweaked toml for crates.io crate mendes-derive 0.0.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mendes-derive 0.0.6 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.108)
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1ac852817ee912ede182a82fcf4674e0b9fbc3a352d20c3ad563f9f0a57a2be1
[INFO] running `Command { std: "docker" "start" "-a" "1ac852817ee912ede182a82fcf4674e0b9fbc3a352d20c3ad563f9f0a57a2be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ac852817ee912ede182a82fcf4674e0b9fbc3a352d20c3ad563f9f0a57a2be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac852817ee912ede182a82fcf4674e0b9fbc3a352d20c3ad563f9f0a57a2be1", kill_on_drop: false }`
[INFO] [stdout] 1ac852817ee912ede182a82fcf4674e0b9fbc3a352d20c3ad563f9f0a57a2be1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d2955c1229d95b4f95c728ebf6b5430ad98d78ca3e0a1c305c991877d9cb38be
[INFO] running `Command { std: "docker" "start" "-a" "d2955c1229d95b4f95c728ebf6b5430ad98d78ca3e0a1c305c991877d9cb38be", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling mendes-derive v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let _ = mem::replace(
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `Command { std: "docker" "inspect" "d2955c1229d95b4f95c728ebf6b5430ad98d78ca3e0a1c305c991877d9cb38be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2955c1229d95b4f95c728ebf6b5430ad98d78ca3e0a1c305c991877d9cb38be", kill_on_drop: false }`
[INFO] [stdout] d2955c1229d95b4f95c728ebf6b5430ad98d78ca3e0a1c305c991877d9cb38be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 91026b24b03d1a3957d4a83436e4c2da355f846be82db19a72fd4292deeb6026
[INFO] running `Command { std: "docker" "start" "-a" "91026b24b03d1a3957d4a83436e4c2da355f846be82db19a72fd4292deeb6026", kill_on_drop: false }`
[INFO] [stderr]    Compiling mendes-derive v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let _ = mem::replace(
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | /     mem::replace(
[INFO] [stdout] 103 | |         block,
[INFO] [stdout] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stdout] 105 | |     );
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let _ = mem::replace(
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "91026b24b03d1a3957d4a83436e4c2da355f846be82db19a72fd4292deeb6026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91026b24b03d1a3957d4a83436e4c2da355f846be82db19a72fd4292deeb6026", kill_on_drop: false }`
[INFO] [stdout] 91026b24b03d1a3957d4a83436e4c2da355f846be82db19a72fd4292deeb6026
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 539467decfebb344840713cd4f35dfe74841c94f9478479c56f2b01973ee7ff5
[INFO] running `Command { std: "docker" "start" "-a" "539467decfebb344840713cd4f35dfe74841c94f9478479c56f2b01973ee7ff5", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/lib.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 | /     mem::replace(
[INFO] [stderr] 103 | |         block,
[INFO] [stderr] 104 | |         Box::new(syn::parse::<syn::Block>(new.into()).unwrap()),
[INFO] [stderr] 105 | |     );
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 102 |     let _ = mem::replace(
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mendes-derive` (lib) generated 1 warning
[INFO] [stderr] warning: `mendes-derive` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mendes_derive-1d16f45529c9de1f)
[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] [stderr]    Doc-tests mendes_derive
[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" "539467decfebb344840713cd4f35dfe74841c94f9478479c56f2b01973ee7ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "539467decfebb344840713cd4f35dfe74841c94f9478479c56f2b01973ee7ff5", kill_on_drop: false }`
[INFO] [stdout] 539467decfebb344840713cd4f35dfe74841c94f9478479c56f2b01973ee7ff5