[INFO] fetching crate spvkit 0.1.0...
[INFO] testing spvkit-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spvkit 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate spvkit 0.1.0
[INFO] finished tweaking crates.io crate spvkit 0.1.0
[INFO] tweaked toml for crates.io crate spvkit 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spvkit 0.1.0 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 spvkit 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a9d8b27968c6b9c0a2d12b9f3867dd0c285f6d767fc4809ee5273082176c4d6f
[INFO] running `Command { std: "docker" "start" "-a" "a9d8b27968c6b9c0a2d12b9f3867dd0c285f6d767fc4809ee5273082176c4d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9d8b27968c6b9c0a2d12b9f3867dd0c285f6d767fc4809ee5273082176c4d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d8b27968c6b9c0a2d12b9f3867dd0c285f6d767fc4809ee5273082176c4d6f", kill_on_drop: false }`
[INFO] [stdout] a9d8b27968c6b9c0a2d12b9f3867dd0c285f6d767fc4809ee5273082176c4d6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 36a6e0781de0748eb6a647b6ec6e132fcb7da38e83160782d170c71d7efd75fb
[INFO] running `Command { std: "docker" "start" "-a" "36a6e0781de0748eb6a647b6ec6e132fcb7da38e83160782d170c71d7efd75fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling spvkit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Mapping` is never constructed
[INFO] [stdout]   --> build/spec.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Mapping<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRAMMAR_MAPPING` is never used
[INFO] [stdout]   --> build/spec.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const GRAMMAR_MAPPING: [Mapping<'static>; 17] = [
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.57s
[INFO] running `Command { std: "docker" "inspect" "36a6e0781de0748eb6a647b6ec6e132fcb7da38e83160782d170c71d7efd75fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a6e0781de0748eb6a647b6ec6e132fcb7da38e83160782d170c71d7efd75fb", kill_on_drop: false }`
[INFO] [stdout] 36a6e0781de0748eb6a647b6ec6e132fcb7da38e83160782d170c71d7efd75fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a982c44c9c481c024a1c05c3c1be83ad65d1a5da0bba8f565db3fbb7da743b18
[INFO] running `Command { std: "docker" "start" "-a" "a982c44c9c481c024a1c05c3c1be83ad65d1a5da0bba8f565db3fbb7da743b18", kill_on_drop: false }`
[INFO] [stderr]    Compiling spvkit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Mapping` is never constructed
[INFO] [stdout]   --> build/spec.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Mapping<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRAMMAR_MAPPING` is never used
[INFO] [stdout]   --> build/spec.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const GRAMMAR_MAPPING: [Mapping<'static>; 17] = [
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.69s
[INFO] running `Command { std: "docker" "inspect" "a982c44c9c481c024a1c05c3c1be83ad65d1a5da0bba8f565db3fbb7da743b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a982c44c9c481c024a1c05c3c1be83ad65d1a5da0bba8f565db3fbb7da743b18", kill_on_drop: false }`
[INFO] [stdout] a982c44c9c481c024a1c05c3c1be83ad65d1a5da0bba8f565db3fbb7da743b18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6d3d0ab71b21c658f752194cb833b8280c277002ff7cad11eaa4419c40dd75bb
[INFO] running `Command { std: "docker" "start" "-a" "6d3d0ab71b21c658f752194cb833b8280c277002ff7cad11eaa4419c40dd75bb", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Mapping` is never constructed
[INFO] [stderr]   --> build/spec.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Mapping<'a> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `GRAMMAR_MAPPING` is never used
[INFO] [stderr]   --> build/spec.rs:26:7
[INFO] [stderr]    |
[INFO] [stderr] 26 | const GRAMMAR_MAPPING: [Mapping<'static>; 17] = [
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `spvkit` (build script) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/spvkit-655db8bb8d8867b3)
[INFO] [stderr]    Doc-tests spvkit
[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] [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" "6d3d0ab71b21c658f752194cb833b8280c277002ff7cad11eaa4419c40dd75bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3d0ab71b21c658f752194cb833b8280c277002ff7cad11eaa4419c40dd75bb", kill_on_drop: false }`
[INFO] [stdout] 6d3d0ab71b21c658f752194cb833b8280c277002ff7cad11eaa4419c40dd75bb
