[INFO] fetching crate spare_buffer 0.1.1...
[INFO] testing spare_buffer-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spare_buffer 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate spare_buffer 0.1.1
[INFO] finished tweaking crates.io crate spare_buffer 0.1.1
[INFO] tweaked toml for crates.io crate spare_buffer 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spare_buffer 0.1.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate spare_buffer 0.1.1 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-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0e19595884d328f6475659aa661429d90e32a5342707b036a74823ef6a371a3
[INFO] running `Command { std: "docker" "start" "-a" "d0e19595884d328f6475659aa661429d90e32a5342707b036a74823ef6a371a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0e19595884d328f6475659aa661429d90e32a5342707b036a74823ef6a371a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e19595884d328f6475659aa661429d90e32a5342707b036a74823ef6a371a3", kill_on_drop: false }`
[INFO] [stdout] d0e19595884d328f6475659aa661429d90e32a5342707b036a74823ef6a371a3
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4094352fda844a9168987094848b561592d33324b89de2a40ad95ff1bd7d9340
[INFO] running `Command { std: "docker" "start" "-a" "4094352fda844a9168987094848b561592d33324b89de2a40ad95ff1bd7d9340", kill_on_drop: false }`
[INFO] [stderr]    Compiling spare_buffer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "4094352fda844a9168987094848b561592d33324b89de2a40ad95ff1bd7d9340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4094352fda844a9168987094848b561592d33324b89de2a40ad95ff1bd7d9340", kill_on_drop: false }`
[INFO] [stdout] 4094352fda844a9168987094848b561592d33324b89de2a40ad95ff1bd7d9340
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10c60aa010d427bc103b015e28e6223bf87a75200d04c72beaba892a108cdfd5
[INFO] running `Command { std: "docker" "start" "-a" "10c60aa010d427bc103b015e28e6223bf87a75200d04c72beaba892a108cdfd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling spare_buffer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "10c60aa010d427bc103b015e28e6223bf87a75200d04c72beaba892a108cdfd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10c60aa010d427bc103b015e28e6223bf87a75200d04c72beaba892a108cdfd5", kill_on_drop: false }`
[INFO] [stdout] 10c60aa010d427bc103b015e28e6223bf87a75200d04c72beaba892a108cdfd5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d28024239c8852b8085bd7ebb2f81a79283165f92862a4ac2d0b9d907d239d3
[INFO] running `Command { std: "docker" "start" "-a" "2d28024239c8852b8085bd7ebb2f81a79283165f92862a4ac2d0b9d907d239d3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/spare_buffer-04d8cd6c66b7bc97)
[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 spare_buffer
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 60) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 35) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 60) stdout ----
[INFO] [stdout] error[E0433]: cannot find type `NonZeroUsize` in this scope
[INFO] [stdout]   --> src/lib.rs:63:50
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut buffer = SpareBuffer::from(&mut vec, NonZeroUsize::new(10485760));
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^ use of undeclared type `NonZeroUsize`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 61 + use std::num::NonZeroUsize;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `NonZeroUsize` in this scope
[INFO] [stdout]   --> src/lib.rs:65:22
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let chunk_size = NonZeroUsize::new(4096).unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^ use of undeclared type `NonZeroUsize`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 61 + use std::num::NonZeroUsize;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `File` in this scope
[INFO] [stdout]   --> src/lib.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut file = File::open("input.dat").expect("Failed to open input file!");
[INFO] [stdout]    |                    ^^^^ use of undeclared type `File`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 61 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `SpareBuffer` in this scope
[INFO] [stdout]   --> src/lib.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut buffer = SpareBuffer::from(&mut vec, NonZeroUsize::new(10485760));
[INFO] [stdout]    |                      ^^^^^^^^^^^ use of undeclared type `SpareBuffer`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 35) stdout ----
[INFO] [stdout] error[E0433]: cannot find type `NonZeroUsize` in this scope
[INFO] [stdout]   --> src/lib.rs:40:39
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let spare = buffer.allocate_spare(NonZeroUsize::new(100).unwrap());
[INFO] [stdout]    |                                       ^^^^^^^^^^^^ use of undeclared type `NonZeroUsize`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 36 + use std::num::NonZeroUsize;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `SpareBuffer` in this scope
[INFO] [stdout]   --> src/lib.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut buffer = SpareBuffer::from(&mut vec, None);
[INFO] [stdout]    |                      ^^^^^^^^^^^ use of undeclared type `SpareBuffer`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 35)
[INFO] [stdout]     src/lib.rs - (line 60)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "2d28024239c8852b8085bd7ebb2f81a79283165f92862a4ac2d0b9d907d239d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d28024239c8852b8085bd7ebb2f81a79283165f92862a4ac2d0b9d907d239d3", kill_on_drop: false }`
[INFO] [stdout] 2d28024239c8852b8085bd7ebb2f81a79283165f92862a4ac2d0b9d907d239d3
