[INFO] fetching crate sigpipe-errors 0.1.0...
[INFO] testing sigpipe-errors-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sigpipe-errors 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate sigpipe-errors 0.1.0
[INFO] finished tweaking crates.io crate sigpipe-errors 0.1.0
[INFO] tweaked toml for crates.io crate sigpipe-errors 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigpipe-errors 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 sigpipe-errors 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] 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] d85c37726475f9e9f683d7f3d2f520d22a3a8164494281983909dd6bf5ac9bec
[INFO] running `Command { std: "docker" "start" "-a" "d85c37726475f9e9f683d7f3d2f520d22a3a8164494281983909dd6bf5ac9bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d85c37726475f9e9f683d7f3d2f520d22a3a8164494281983909dd6bf5ac9bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d85c37726475f9e9f683d7f3d2f520d22a3a8164494281983909dd6bf5ac9bec", kill_on_drop: false }`
[INFO] [stdout] d85c37726475f9e9f683d7f3d2f520d22a3a8164494281983909dd6bf5ac9bec
[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] 888fec6201ff41d6ac72b35972d8f2ba0dc7846ecfb8157e12e0c0ecc15b2d98
[INFO] running `Command { std: "docker" "start" "-a" "888fec6201ff41d6ac72b35972d8f2ba0dc7846ecfb8157e12e0c0ecc15b2d98", kill_on_drop: false }`
[INFO] [stderr]    Compiling sigpipe-errors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find `on_broken_pipe` in `io`
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[std::io::on_broken_pipe]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^ could not find `on_broken_pipe` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `OnBrokenPipe` in `io`
[INFO] [stdout]  --> src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     std::io::OnBrokenPipe::Error
[INFO] [stdout]   |              ^^^^^^^^^^^^ could not find `OnBrokenPipe` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `OnBrokenPipe` in module `std::io`
[INFO] [stdout]  --> src/lib.rs:8:33
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn on_broken_pipe() -> std::io::OnBrokenPipe {
[INFO] [stdout]   |                                 ^^^^^^^^^^^^ not found in `std::io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(on_broken_pipe)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `on_broken_pipe`
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(on_broken_pipe)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433, E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sigpipe-errors` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "888fec6201ff41d6ac72b35972d8f2ba0dc7846ecfb8157e12e0c0ecc15b2d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "888fec6201ff41d6ac72b35972d8f2ba0dc7846ecfb8157e12e0c0ecc15b2d98", kill_on_drop: false }`
[INFO] [stdout] 888fec6201ff41d6ac72b35972d8f2ba0dc7846ecfb8157e12e0c0ecc15b2d98
