[INFO] fetching crate rootchain-std 1.0.2...
[INFO] testing rootchain-std-1.0.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rootchain-std 1.0.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rootchain-std 1.0.2
[INFO] finished tweaking crates.io crate rootchain-std 1.0.2
[INFO] tweaked toml for crates.io crate rootchain-std 1.0.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rootchain-std 1.0.2 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 rootchain-std 1.0.2 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-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] 0ef648507a7cc229c0cc257137047bfcc63a33f81238e41d251d411e8cf2336d
[INFO] running `Command { std: "docker" "start" "-a" "0ef648507a7cc229c0cc257137047bfcc63a33f81238e41d251d411e8cf2336d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ef648507a7cc229c0cc257137047bfcc63a33f81238e41d251d411e8cf2336d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ef648507a7cc229c0cc257137047bfcc63a33f81238e41d251d411e8cf2336d", kill_on_drop: false }`
[INFO] [stdout] 0ef648507a7cc229c0cc257137047bfcc63a33f81238e41d251d411e8cf2336d
[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] 5cecc6f56fa48231e2d574969466624958ff4ebf0fa5168e08df2d08ad035aac
[INFO] running `Command { std: "docker" "start" "-a" "5cecc6f56fa48231e2d574969466624958ff4ebf0fa5168e08df2d08ad035aac", kill_on_drop: false }`
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling unty v0.0.4
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling lol_alloc v0.4.1
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling rootchain-macros v1.0.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling ed25519 v2.2.3
[INFO] [stderr]    Compiling serde-big-array v0.5.1
[INFO] [stderr]    Compiling bincode v2.0.1
[INFO] [stderr]    Compiling ed25519-dalek v2.2.0
[INFO] [stderr]    Compiling rootchain-core v1.0.2
[INFO] [stderr]    Compiling rootchain-std v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: no global memory allocator found but one is required; link to std or add `#[global_allocator]` to a static item that implements the GlobalAlloc trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rootchain-std` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5cecc6f56fa48231e2d574969466624958ff4ebf0fa5168e08df2d08ad035aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cecc6f56fa48231e2d574969466624958ff4ebf0fa5168e08df2d08ad035aac", kill_on_drop: false }`
[INFO] [stdout] 5cecc6f56fa48231e2d574969466624958ff4ebf0fa5168e08df2d08ad035aac
