[INFO] fetching crate patina_debugger 21.0.2...
[INFO] testing patina_debugger-21.0.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate patina_debugger 21.0.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate patina_debugger 21.0.2
[INFO] finished tweaking crates.io crate patina_debugger 21.0.2
[INFO] tweaked toml for crates.io crate patina_debugger 21.0.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate patina_debugger 21.0.2 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 patina_debugger 21.0.2 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e998f039dafa61b713fc49f7692363eb8ccc61fc794c4a8786530c0581dab98
[INFO] running `Command { std: "docker" "start" "-a" "6e998f039dafa61b713fc49f7692363eb8ccc61fc794c4a8786530c0581dab98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e998f039dafa61b713fc49f7692363eb8ccc61fc794c4a8786530c0581dab98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e998f039dafa61b713fc49f7692363eb8ccc61fc794c4a8786530c0581dab98", kill_on_drop: false }`
[INFO] [stdout] 6e998f039dafa61b713fc49f7692363eb8ccc61fc794c4a8786530c0581dab98
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fc54041c217797621314ce2347c3f94054dabc214da39a0351ba7633e3cae49
[INFO] running `Command { std: "docker" "start" "-a" "7fc54041c217797621314ce2347c3f94054dabc214da39a0351ba7633e3cae49", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling time-core v0.1.8
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling linkme-impl v0.3.36
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling r-efi v5.3.0
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling linkme v0.3.36
[INFO] [stderr]    Compiling mu_uefi_perf_timer v3.0.2
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling volatile v0.4.6
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]    Compiling fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling x86_64 v0.15.2
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling indoc v2.0.7
[INFO] [stderr]    Compiling patina_stacktrace v21.0.2
[INFO] [stderr]    Compiling pastey v0.2.1
[INFO] [stderr]    Compiling managed v0.8.0
[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/patina_stacktrace-21.0.2/src/lib.rs:170:1
[INFO] [stdout]     |
[INFO] [stdout] 170 | #![feature(coverage_attribute)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `patina_stacktrace` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/x86_64-0.15.2/src/lib.rs:5:44
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "abi_x86_interrupt", feature(abi_x86_interrupt))]
[INFO] [stdout]   |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7fc54041c217797621314ce2347c3f94054dabc214da39a0351ba7633e3cae49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc54041c217797621314ce2347c3f94054dabc214da39a0351ba7633e3cae49", kill_on_drop: false }`
[INFO] [stdout] 7fc54041c217797621314ce2347c3f94054dabc214da39a0351ba7633e3cae49
