[INFO] fetching crate lurk-ipld-cbor-derive 0.3.0...
[INFO] testing lurk-ipld-cbor-derive-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate lurk-ipld-cbor-derive 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate lurk-ipld-cbor-derive 0.3.0
[INFO] finished tweaking crates.io crate lurk-ipld-cbor-derive 0.3.0
[INFO] tweaked toml for crates.io crate lurk-ipld-cbor-derive 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lurk-ipld-cbor-derive 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lurk-ipld-cbor-derive 0.3.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml v0.5.9
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded serde_derive v1.0.147
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded trybuild v1.0.71
[INFO] [stderr]   Downloaded serde_json v1.0.89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57e08a0234edfd426ca9dc6935404faef95db9031d19b46564540529eb48fa91
[INFO] running `Command { std: "docker" "start" "-a" "57e08a0234edfd426ca9dc6935404faef95db9031d19b46564540529eb48fa91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57e08a0234edfd426ca9dc6935404faef95db9031d19b46564540529eb48fa91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e08a0234edfd426ca9dc6935404faef95db9031d19b46564540529eb48fa91", kill_on_drop: false }`
[INFO] [stdout] 57e08a0234edfd426ca9dc6935404faef95db9031d19b46564540529eb48fa91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d5bc70618c568c0c0732c1d3fbfe90dd0eacf578e7b225a1ad9f4cf1a0a56bb
[INFO] running `Command { std: "docker" "start" "-a" "6d5bc70618c568c0c0732c1d3fbfe90dd0eacf578e7b225a1ad9f4cf1a0a56bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling proc-macro-crate v1.2.1
[INFO] [stderr]    Compiling lurk-ipld-cbor-derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/attr.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 15 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/attr.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 30 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 31 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.81s
[INFO] running `Command { std: "docker" "inspect" "6d5bc70618c568c0c0732c1d3fbfe90dd0eacf578e7b225a1ad9f4cf1a0a56bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d5bc70618c568c0c0732c1d3fbfe90dd0eacf578e7b225a1ad9f4cf1a0a56bb", kill_on_drop: false }`
[INFO] [stdout] 6d5bc70618c568c0c0732c1d3fbfe90dd0eacf578e7b225a1ad9f4cf1a0a56bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d545e5356b35a514046045996dea477f72d06fb43f2e0d07b8e334a203a12685
[INFO] running `Command { std: "docker" "start" "-a" "d545e5356b35a514046045996dea477f72d06fb43f2e0d07b8e334a203a12685", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling trybuild v1.0.71
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling proc-macro-crate v1.2.1
[INFO] [stderr]    Compiling lurk-ipld-cbor-derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/attr.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 15 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/attr.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 30 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 31 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/union.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::DagCborCodec;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/basic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::DagCborCodec;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/basic.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::assert_roundtrip;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/union.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::assert_roundtrip;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> tests/union.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::{ipld, DagCbor};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> examples/basic.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::{ipld, DagCbor, Ipld};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/repr_attr.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::DagCborCodec;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/repr_attr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::assert_roundtrip;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> examples/repr_attr.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::{ipld, DagCbor};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/name_attr.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::DagCborCodec;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/name_attr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::{Decode, Encode};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> examples/name_attr.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::ipld::Ipld;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> examples/name_attr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lurk_ipld::{ipld, DagCbor};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/struct.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::{DagCbor, DagCborCodec};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/struct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::assert_roundtrip;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/enum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lurk_ipld::cbor::DagCborCodec;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]  --> tests/enum.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lurk_ipld::codec::assert_roundtrip;
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> tests/struct.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::{ipld, DagCbor};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `lurk_ipld`
[INFO] [stdout]  --> tests/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lurk_ipld::{ipld, DagCbor};
[INFO] [stdout]   |     ^^^^^^^^^ use of unresolved module or unlinked crate `lurk_ipld`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `lurk_ipld`, use `cargo add lurk_ipld` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (example "basic") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (test "union") due to 3 previous errors
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (example "repr_attr") due to 3 previous errors
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (test "struct") due to 3 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode` found for struct `RenameFields` in the current scope
[INFO] [stdout]   --> examples/name_attr.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct RenameFields {
[INFO] [stdout]    | ------------------- method `encode` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     data.encode(DagCborCodec, &mut bytes)?;
[INFO] [stdout]    |          ^^^^^^ method not found in `RenameFields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `decode` found for struct `RenameFields` in the current scope
[INFO] [stdout]   --> examples/name_attr.rs:24:31
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct RenameFields {
[INFO] [stdout]    | ------------------- function or associated item `decode` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     let data2 = RenameFields::decode(DagCborCodec, &mut Cursor::new(bytes.as_slice()))?;
[INFO] [stdout]    |                               ^^^^^^ function or associated item not found in `RenameFields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (example "name_attr") due to 6 previous errors
[INFO] [stderr] error: could not compile `lurk-ipld-cbor-derive` (test "enum") due to 3 previous errors
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/attr.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 15 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/attr.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 30 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 31 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d545e5356b35a514046045996dea477f72d06fb43f2e0d07b8e334a203a12685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d545e5356b35a514046045996dea477f72d06fb43f2e0d07b8e334a203a12685", kill_on_drop: false }`
[INFO] [stdout] d545e5356b35a514046045996dea477f72d06fb43f2e0d07b8e334a203a12685
