[INFO] fetching crate blockless-car 0.3.2...
[INFO] testing blockless-car-0.3.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate blockless-car 0.3.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate blockless-car 0.3.2
[INFO] finished tweaking crates.io crate blockless-car 0.3.2
[INFO] tweaked toml for crates.io crate blockless-car 0.3.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate blockless-car 0.3.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate blockless-car 0.3.2 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.60
[INFO] [stderr]   Downloaded unsigned-varint v0.2.3
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded thiserror-impl v1.0.60
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded integer-encoding v4.0.0
[INFO] [stderr]   Downloaded libipld-cbor-derive v0.16.0
[INFO] [stderr]   Downloaded anyhow v1.0.83
[INFO] [stderr]   Downloaded miniz_oxide v0.7.2
[INFO] [stderr]   Downloaded cc v1.0.97
[INFO] [stderr]   Downloaded backtrace v0.3.71
[INFO] [stderr]   Downloaded serde_derive v1.0.201
[INFO] [stderr]   Downloaded serde v1.0.201
[INFO] [stderr]   Downloaded syn v2.0.61
[INFO] [stderr]   Downloaded blake2b_simd v1.0.2
[INFO] [stderr]   Downloaded blake2s_simd v1.0.2
[INFO] [stderr]   Downloaded multihash v0.18.1
[INFO] [stderr]   Downloaded failure v0.1.8
[INFO] [stderr]   Downloaded cid v0.10.1
[INFO] [stderr]   Downloaded data-encoding-macro v0.1.15
[INFO] [stderr]   Downloaded cpufeatures v0.2.12
[INFO] [stderr]   Downloaded libipld-core v0.16.0
[INFO] [stderr]   Downloaded libc v0.2.154
[INFO] [stderr]   Downloaded libipld-json v0.16.0
[INFO] [stderr]   Downloaded libipld-macro v0.16.0
[INFO] [stderr]   Downloaded libipld-pb v0.16.0
[INFO] [stderr]   Downloaded data-encoding-macro-internal v0.1.13
[INFO] [stderr]   Downloaded libipld-cbor v0.16.0
[INFO] [stderr]   Downloaded failure_derive v0.1.8
[INFO] [stderr]   Downloaded multicodec v0.1.0
[INFO] [stderr]   Downloaded libipld v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8e08ab22be65aee20e59beb7bf75ee79ee3d44491bcfe934b9ba3c8d5c8a201
[INFO] running `Command { std: "docker" "start" "-a" "f8e08ab22be65aee20e59beb7bf75ee79ee3d44491bcfe934b9ba3c8d5c8a201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8e08ab22be65aee20e59beb7bf75ee79ee3d44491bcfe934b9ba3c8d5c8a201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e08ab22be65aee20e59beb7bf75ee79ee3d44491bcfe934b9ba3c8d5c8a201", kill_on_drop: false }`
[INFO] [stdout] f8e08ab22be65aee20e59beb7bf75ee79ee3d44491bcfe934b9ba3c8d5c8a201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03b44459ed06ed5bc644cade46c50da82f52c0ad9eba215dc0c5d2e392e87ea1
[INFO] running `Command { std: "docker" "start" "-a" "03b44459ed06ed5bc644cade46c50da82f52c0ad9eba215dc0c5d2e392e87ea1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling constant_time_eq v0.3.0
[INFO] [stderr]    Compiling arrayref v0.3.7
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling data-encoding v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]    Compiling unsigned-varint v0.7.2
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling blake2b_simd v1.0.2
[INFO] [stderr]    Compiling blake2s_simd v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling core2 v0.4.0
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling rustc-demangle v0.1.24
[INFO] [stderr]    Compiling ryu v1.0.18
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[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling integer-encoding v4.0.0
[INFO] [stderr]    Compiling syn v2.0.61
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.201
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.13
[INFO] [stderr]    Compiling data-encoding-macro v0.1.15
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling multibase v0.9.1
[INFO] [stderr]    Compiling multihash-derive v0.8.1
[INFO] [stderr]    Compiling libipld-cbor-derive v0.16.0
[INFO] [stderr]    Compiling multihash v0.18.1
[INFO] [stderr]    Compiling cid v0.10.1
[INFO] [stderr]    Compiling multicodec v0.1.0
[INFO] [stderr]    Compiling libipld-core v0.16.0
[INFO] [stderr]    Compiling libipld-cbor v0.16.0
[INFO] [stderr]    Compiling libipld-pb v0.16.0
[INFO] [stderr]    Compiling libipld-macro v0.16.0
[INFO] [stderr]    Compiling libipld-json v0.16.0
[INFO] [stderr]    Compiling libipld v0.16.0
[INFO] [stderr]    Compiling blockless-car v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]  --> src/header/header_v1.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Debug, Clone, PartialEq, Eq, Default, ipld::DagCbor)]
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]   = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Decode<DagCborCodec>` will fail
[INFO] [stdout]  --> src/header/header_v1.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Debug, Clone, PartialEq, Eq, Default, ipld::DagCbor)]
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout]   = note: this error originates in the derive macro `ipld::DagCbor` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metadata` is never constructed
[INFO] [stdout]    --> src/pb/unixfs.rs:164:12
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub struct Metadata<'a> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blockless-car` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "03b44459ed06ed5bc644cade46c50da82f52c0ad9eba215dc0c5d2e392e87ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b44459ed06ed5bc644cade46c50da82f52c0ad9eba215dc0c5d2e392e87ea1", kill_on_drop: false }`
[INFO] [stdout] 03b44459ed06ed5bc644cade46c50da82f52c0ad9eba215dc0c5d2e392e87ea1
