[INFO] fetching crate sendstream_parser 0.2.2...
[INFO] testing sendstream_parser-0.2.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sendstream_parser 0.2.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate sendstream_parser 0.2.2
[INFO] finished tweaking crates.io crate sendstream_parser 0.2.2
[INFO] tweaked toml for crates.io crate sendstream_parser 0.2.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sendstream_parser 0.2.2 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] 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 50 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.1.1)
[INFO] [stderr]       Adding nix v0.26.4 (available: v0.31.2)
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding similar-asserts v1.7.0 (available: v2.0.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ffe8246b638c50f82e61bfc4d4e86d5c46fd1cb9cfe16053b312105a225572a6
[INFO] running `Command { std: "docker" "start" "-a" "ffe8246b638c50f82e61bfc4d4e86d5c46fd1cb9cfe16053b312105a225572a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffe8246b638c50f82e61bfc4d4e86d5c46fd1cb9cfe16053b312105a225572a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffe8246b638c50f82e61bfc4d4e86d5c46fd1cb9cfe16053b312105a225572a6", kill_on_drop: false }`
[INFO] [stdout] ffe8246b638c50f82e61bfc4d4e86d5c46fd1cb9cfe16053b312105a225572a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1f988f5372093854e3529d0004d73cf733c83bfe9a4b6d02c07f08f5f650a148
[INFO] running `Command { std: "docker" "start" "-a" "1f988f5372093854e3529d0004d73cf733c83bfe9a4b6d02c07f08f5f650a148", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling uuid v1.23.1
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling sendstream_parser v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(macro_metavar_expr)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sendstream_parser` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f988f5372093854e3529d0004d73cf733c83bfe9a4b6d02c07f08f5f650a148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f988f5372093854e3529d0004d73cf733c83bfe9a4b6d02c07f08f5f650a148", kill_on_drop: false }`
[INFO] [stdout] 1f988f5372093854e3529d0004d73cf733c83bfe9a4b6d02c07f08f5f650a148
