[INFO] fetching crate sp-ipld 0.2.0...
[INFO] testing sp-ipld-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sp-ipld 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sp-ipld 0.2.0
[INFO] finished tweaking crates.io crate sp-ipld 0.2.0
[INFO] tweaked toml for crates.io crate sp-ipld 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sp-ipld 0.2.0 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 233 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding bytecursor v0.1.2 (available: v0.2.0)
[INFO] [stderr]       Adding parity-scale-codec v2.3.1 (available: v3.7.5)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.13.2)
[INFO] [stderr]       Adding sp-cid v0.2.0 (available: v0.3.0)
[INFO] [stderr]       Adding sp-multihash v0.2.0 (available: v0.3.0)
[INFO] [stderr]       Adding unsigned-varint v0.7.2 (available: v0.8.0)
[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] 9ad0ecb7214180c764cb3c6b9c5f523db053bbf58a6189da4946d8d7a30c31f4
[INFO] running `Command { std: "docker" "start" "-a" "9ad0ecb7214180c764cb3c6b9c5f523db053bbf58a6189da4946d8d7a30c31f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ad0ecb7214180c764cb3c6b9c5f523db053bbf58a6189da4946d8d7a30c31f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ad0ecb7214180c764cb3c6b9c5f523db053bbf58a6189da4946d8d7a30c31f4", kill_on_drop: false }`
[INFO] [stdout] 9ad0ecb7214180c764cb3c6b9c5f523db053bbf58a6189da4946d8d7a30c31f4
[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] c6da8ef9f8481a97f9fcdb1691a967f90cc3919f9453c2350dee432c89b0843a
[INFO] running `Command { std: "docker" "start" "-a" "c6da8ef9f8481a97f9fcdb1691a967f90cc3919f9453c2350dee432c89b0843a", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling find-msvc-tools v0.1.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling arrayref v0.3.9
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling data-encoding v2.11.0
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling opaque-debug v0.3.1
[INFO] [stderr]    Compiling sp-std v3.0.0
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling const-str v0.4.3
[INFO] [stderr]    Compiling keccak v0.1.6
[INFO] [stderr]    Compiling cc v1.2.61
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling bytecursor v0.1.2
[INFO] [stderr]    Compiling unsigned-varint v0.7.2
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling blake2b_simd v0.5.11
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling blake2s_simd v0.5.11
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling sp-multihash-derive v0.2.0
[INFO] [stderr]    Compiling sp-multihash v0.2.0
[INFO] [stderr]    Compiling match-lookup v0.1.2
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.18
[INFO] [stderr]    Compiling base256emoji v1.0.2
[INFO] [stderr]    Compiling data-encoding-macro v0.1.20
[INFO] [stderr]    Compiling multibase v0.9.2
[INFO] [stderr]    Compiling sp-cid v0.2.0
[INFO] [stderr]    Compiling sp-ipld v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unleashed`
[INFO] [stdout]   --> src/ipld.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |             #[cfg(feature = "unleashed")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `base64`, `byteorder`, `dag-cbor`, `dag-json`, `default`, `multibase`, `parity-scale-codec`, `serde`, `sp-multihash`, and `std`
[INFO] [stdout]    = help: consider adding `unleashed` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unleashed`
[INFO] [stdout]   --> src/ipld.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |             #[cfg(feature = "unleashed")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `base64`, `byteorder`, `dag-cbor`, `dag-json`, `default`, `multibase`, `parity-scale-codec`, `serde`, `sp-multihash`, and `std`
[INFO] [stdout]    = help: consider adding `unleashed` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `map_first_last` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sp-ipld` (lib) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c6da8ef9f8481a97f9fcdb1691a967f90cc3919f9453c2350dee432c89b0843a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6da8ef9f8481a97f9fcdb1691a967f90cc3919f9453c2350dee432c89b0843a", kill_on_drop: false }`
[INFO] [stdout] c6da8ef9f8481a97f9fcdb1691a967f90cc3919f9453c2350dee432c89b0843a
