[INFO] fetching crate zx0 1.0.0...
[INFO] testing zx0-1.0.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate zx0 1.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate zx0 1.0.0
[INFO] finished tweaking crates.io crate zx0 1.0.0
[INFO] tweaked toml for crates.io crate zx0 1.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zx0 1.0.0 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 zx0 1.0.0 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] fcda31fcff7d53dfa68e039f4139b16bbb062ce6bb051ff3d5743ed058573d51
[INFO] running `Command { std: "docker" "start" "-a" "fcda31fcff7d53dfa68e039f4139b16bbb062ce6bb051ff3d5743ed058573d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcda31fcff7d53dfa68e039f4139b16bbb062ce6bb051ff3d5743ed058573d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcda31fcff7d53dfa68e039f4139b16bbb062ce6bb051ff3d5743ed058573d51", kill_on_drop: false }`
[INFO] [stdout] fcda31fcff7d53dfa68e039f4139b16bbb062ce6bb051ff3d5743ed058573d51
[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] 3b93ada1d8764aca562468f75f02618ee667a24a5ff881e52a96795ae1ddb42c
[INFO] running `Command { std: "docker" "start" "-a" "3b93ada1d8764aca562468f75f02618ee667a24a5ff881e52a96795ae1ddb42c", kill_on_drop: false }`
[INFO] [stderr]    Compiling zx0 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "3b93ada1d8764aca562468f75f02618ee667a24a5ff881e52a96795ae1ddb42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b93ada1d8764aca562468f75f02618ee667a24a5ff881e52a96795ae1ddb42c", kill_on_drop: false }`
[INFO] [stdout] 3b93ada1d8764aca562468f75f02618ee667a24a5ff881e52a96795ae1ddb42c
[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] 93702b874d12eedf1d6922ed14f9fa055f6c0844cef46ca68a50810aa4e90fb0
[INFO] running `Command { std: "docker" "start" "-a" "93702b874d12eedf1d6922ed14f9fa055f6c0844cef46ca68a50810aa4e90fb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling zx0 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> examples/fuzzer.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let reference = reference::Compressor::new().compress(&input);
[INFO] [stdout]    |                         ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> src/lib.rs:64:25
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let reference = reference::Compressor::new().compress(&input);
[INFO] [stdout]    |                         ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]    |
[INFO] [stdout] 58 +     use crate::Compressor;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 64 -         let reference = reference::Compressor::new().compress(&input);
[INFO] [stdout] 64 +         let reference = Compressor::new().compress(&input);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> src/lib.rs:77:29
[INFO] [stdout]    |
[INFO] [stdout] 77 |             let reference = reference::Compressor::new().skip(skip).compress(&input);
[INFO] [stdout]    |                             ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]    |
[INFO] [stdout] 58 +     use crate::Compressor;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 77 -             let reference = reference::Compressor::new().skip(skip).compress(&input);
[INFO] [stdout] 77 +             let reference = Compressor::new().skip(skip).compress(&input);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> src/lib.rs:91:25
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let reference = reference::Compressor::new().backwards_mode(true).compress(&input);
[INFO] [stdout]    |                         ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]    |
[INFO] [stdout] 58 +     use crate::Compressor;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 91 -         let reference = reference::Compressor::new().backwards_mode(true).compress(&input);
[INFO] [stdout] 91 +         let reference = Compressor::new().backwards_mode(true).compress(&input);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:106:29
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let reference = reference::Compressor::new().backwards_mode(true).skip(skip).compress(&input);
[INFO] [stdout]     |                             ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]     |
[INFO] [stdout]  58 +     use crate::Compressor;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 106 -             let reference = reference::Compressor::new().backwards_mode(true).skip(skip).compress(&input);
[INFO] [stdout] 106 +             let reference = Compressor::new().backwards_mode(true).skip(skip).compress(&input);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:120:25
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let reference = reference::Compressor::new().quick_mode(true).compress(&input);
[INFO] [stdout]     |                         ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]     |
[INFO] [stdout]  58 +     use crate::Compressor;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 120 -         let reference = reference::Compressor::new().quick_mode(true).compress(&input);
[INFO] [stdout] 120 +         let reference = Compressor::new().quick_mode(true).compress(&input);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let reference = reference::Compressor::new().classic_mode(true).compress(&input);
[INFO] [stdout]     |                         ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct through its public re-export
[INFO] [stdout]     |
[INFO] [stdout]  58 +     use crate::Compressor;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `Compressor`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 133 -         let reference = reference::Compressor::new().classic_mode(true).compress(&input);
[INFO] [stdout] 133 +         let reference = Compressor::new().classic_mode(true).compress(&input);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zx0` (example "fuzzer") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> examples/benchmark.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |     benchmark(|| reference::Compressor::new().compress(&input));
[INFO] [stdout]    |                  ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> examples/benchmark.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 |         unsafe { reference::reset() };
[INFO] [stdout]    |                  ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> src/lib.rs:78:22
[INFO] [stdout]    |
[INFO] [stdout] 78 |             unsafe { reference::reset(); }
[INFO] [stdout]    |                      ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 |         unsafe { reference::reset(); }
[INFO] [stdout]    |                  ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:107:22
[INFO] [stdout]     |
[INFO] [stdout] 107 |             unsafe { reference::reset(); }
[INFO] [stdout]     |                      ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:121:18
[INFO] [stdout]     |
[INFO] [stdout] 121 |         unsafe { reference::reset(); }
[INFO] [stdout]     |                  ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `reference` in this scope
[INFO] [stdout]    --> src/lib.rs:134:18
[INFO] [stdout]     |
[INFO] [stdout] 134 |         unsafe { reference::reset(); }
[INFO] [stdout]     |                  ^^^^^^^^^ use of unresolved module or unlinked crate `reference`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `reference`, use `cargo add reference` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zx0` (example "benchmark") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zx0` (lib test) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "93702b874d12eedf1d6922ed14f9fa055f6c0844cef46ca68a50810aa4e90fb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93702b874d12eedf1d6922ed14f9fa055f6c0844cef46ca68a50810aa4e90fb0", kill_on_drop: false }`
[INFO] [stdout] 93702b874d12eedf1d6922ed14f9fa055f6c0844cef46ca68a50810aa4e90fb0
