[INFO] fetching crate wasmer-singlepass-backend-fl 0.17.0...
[INFO] testing wasmer-singlepass-backend-fl-0.17.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate wasmer-singlepass-backend-fl 0.17.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate wasmer-singlepass-backend-fl 0.17.0
[INFO] finished tweaking crates.io crate wasmer-singlepass-backend-fl 0.17.0
[INFO] tweaked toml for crates.io crate wasmer-singlepass-backend-fl 0.17.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasmer-singlepass-backend-fl 0.17.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v3.0.0)
[INFO] [stderr]       Adding dynasm v0.5.2 (available: v5.0.0)
[INFO] [stderr]       Adding dynasmrt v0.5.2 (available: v5.0.0)
[INFO] [stderr]       Adding nix v0.15.0 (available: v0.31.2)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 74a96e66d140dc5f78439dce03ed0eabb0ee15216dc25c830342ba6339b96963
[INFO] running `Command { std: "docker" "start" "-a" "74a96e66d140dc5f78439dce03ed0eabb0ee15216dc25c830342ba6339b96963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74a96e66d140dc5f78439dce03ed0eabb0ee15216dc25c830342ba6339b96963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74a96e66d140dc5f78439dce03ed0eabb0ee15216dc25c830342ba6339b96963", kill_on_drop: false }`
[INFO] [stdout] 74a96e66d140dc5f78439dce03ed0eabb0ee15216dc25c830342ba6339b96963
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 88aad738ea576b62c09d9b020898ea152eaf64f05d8b942096a2b8f4cb048aaf
[INFO] running `Command { std: "docker" "start" "-a" "88aad738ea576b62c09d9b020898ea152eaf64f05d8b942096a2b8f4cb048aaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling cc v1.2.61
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling wasmparser v0.51.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling parking_lot_core v0.7.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling page_size v0.4.2
[INFO] [stderr]    Compiling wasmer-runtime-core-fl v0.17.1
[INFO] [stderr]    Compiling dynasmrt v0.5.2
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling serde_bytes v0.11.19
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde-bench v0.0.7
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling dynasm v0.5.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dynasm-0.5.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `source_file` found for struct `proc_macro::Span` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dynasm-0.5.2/src/lib.rs:252:19
[INFO] [stdout]     |
[INFO] [stdout] 252 |     let id = span.source_file().path();
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `source` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 252 -     let id = span.source_file().path();
[INFO] [stdout] 252 +     let id = span.source().path();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dynasm` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "88aad738ea576b62c09d9b020898ea152eaf64f05d8b942096a2b8f4cb048aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88aad738ea576b62c09d9b020898ea152eaf64f05d8b942096a2b8f4cb048aaf", kill_on_drop: false }`
[INFO] [stdout] 88aad738ea576b62c09d9b020898ea152eaf64f05d8b942096a2b8f4cb048aaf
