[INFO] fetching crate fractran_rs 0.6.1...
[INFO] testing fractran_rs-0.6.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fractran_rs 0.6.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate fractran_rs 0.6.1
[INFO] finished tweaking crates.io crate fractran_rs 0.6.1
[INFO] tweaked toml for crates.io crate fractran_rs 0.6.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fractran_rs 0.6.1 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 fractran_rs 0.6.1 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 98520e6305d872503f29fead1ef7ec397f5923f68cb5f220fa5e90686d42f85d
[INFO] running `Command { std: "docker" "start" "-a" "98520e6305d872503f29fead1ef7ec397f5923f68cb5f220fa5e90686d42f85d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98520e6305d872503f29fead1ef7ec397f5923f68cb5f220fa5e90686d42f85d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98520e6305d872503f29fead1ef7ec397f5923f68cb5f220fa5e90686d42f85d", kill_on_drop: false }`
[INFO] [stdout] 98520e6305d872503f29fead1ef7ec397f5923f68cb5f220fa5e90686d42f85d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 252e6ac44aa61e41c9449df7f347f628ac3f468579242e6ff8be862f9c62e3e7
[INFO] running `Command { std: "docker" "start" "-a" "252e6ac44aa61e41c9449df7f347f628ac3f468579242e6ff8be862f9c62e3e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fractran_rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "252e6ac44aa61e41c9449df7f347f628ac3f468579242e6ff8be862f9c62e3e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "252e6ac44aa61e41c9449df7f347f628ac3f468579242e6ff8be862f9c62e3e7", kill_on_drop: false }`
[INFO] [stdout] 252e6ac44aa61e41c9449df7f347f628ac3f468579242e6ff8be862f9c62e3e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] edc08365953cdb387edb8114dd4a62d2fcc34bd398092994ee70234585ef3035
[INFO] running `Command { std: "docker" "start" "-a" "edc08365953cdb387edb8114dd4a62d2fcc34bd398092994ee70234585ef3035", kill_on_drop: false }`
[INFO] [stderr]    Compiling fractran_rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/multiply.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct MultiplyOutput(u32);
[INFO] [stdout]    |        -------------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `MultiplyOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/add.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct AddOutput(u32);
[INFO] [stdout]    |        --------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `AddOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 0.27s
[INFO] running `Command { std: "docker" "inspect" "edc08365953cdb387edb8114dd4a62d2fcc34bd398092994ee70234585ef3035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edc08365953cdb387edb8114dd4a62d2fcc34bd398092994ee70234585ef3035", kill_on_drop: false }`
[INFO] [stdout] edc08365953cdb387edb8114dd4a62d2fcc34bd398092994ee70234585ef3035
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e66194131cfa9757e2de430a80f1c8b38eae2fb01333908432f84dd946660596
[INFO] running `Command { std: "docker" "start" "-a" "e66194131cfa9757e2de430a80f1c8b38eae2fb01333908432f84dd946660596", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> examples/multiply.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct MultiplyOutput(u32);
[INFO] [stderr]    |        -------------- ^^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `MultiplyOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fractran_rs` (example "multiply") generated 1 warning
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> examples/add.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct AddOutput(u32);
[INFO] [stderr]    |        --------- ^^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `AddOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fractran_rs` (example "add") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fractran_rs-19c6a1915c21a945)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fractran_rs
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 83) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 72) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 48) - compile ... ok
[INFO] [stdout] test src/lib.rs - fractran (line 75) ... ok
[INFO] [stdout] test src/lib.rs - (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e66194131cfa9757e2de430a80f1c8b38eae2fb01333908432f84dd946660596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e66194131cfa9757e2de430a80f1c8b38eae2fb01333908432f84dd946660596", kill_on_drop: false }`
[INFO] [stdout] e66194131cfa9757e2de430a80f1c8b38eae2fb01333908432f84dd946660596