[INFO] fetching crate yoke-derive 0.8.2...
[INFO] testing yoke-derive-0.8.2 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate yoke-derive 0.8.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate yoke-derive 0.8.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate yoke-derive 0.8.2
[INFO] tweaked toml for crates.io crate yoke-derive 0.8.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yoke-derive 0.8.2 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yoke-derive 0.8.2 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68d95443ff42bf0e7f7f55736335a4f6d9ac258aee78d51985d003c5b28d34ed
[INFO] running `Command { std: "docker" "start" "-a" "68d95443ff42bf0e7f7f55736335a4f6d9ac258aee78d51985d003c5b28d34ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68d95443ff42bf0e7f7f55736335a4f6d9ac258aee78d51985d003c5b28d34ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68d95443ff42bf0e7f7f55736335a4f6d9ac258aee78d51985d003c5b28d34ed", kill_on_drop: false }`
[INFO] [stdout] 68d95443ff42bf0e7f7f55736335a4f6d9ac258aee78d51985d003c5b28d34ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c6b659607c6adcba80dd86acd1d3d461424da19f598402aa0a445304a039901
[INFO] running `Command { std: "docker" "start" "-a" "1c6b659607c6adcba80dd86acd1d3d461424da19f598402aa0a445304a039901", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling yoke-derive v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "1c6b659607c6adcba80dd86acd1d3d461424da19f598402aa0a445304a039901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c6b659607c6adcba80dd86acd1d3d461424da19f598402aa0a445304a039901", kill_on_drop: false }`
[INFO] [stdout] 1c6b659607c6adcba80dd86acd1d3d461424da19f598402aa0a445304a039901
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ca7e303cdb362c042ddf468c081eb778e69002d370a9174188f457f57d75cd5
[INFO] running `Command { std: "docker" "start" "-a" "8ca7e303cdb362c042ddf468c081eb778e69002d370a9174188f457f57d75cd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling yoke-derive v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `zerovec` in this scope
[INFO] [stdout]  --> examples/yoke_derive.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use zerovec::{maps::ZeroMapKV, ule::AsULE, VarZeroVec, ZeroMap, ZeroVec};
[INFO] [stdout]   |     ^^^^^^^ use of unresolved module or unlinked crate `zerovec`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `zerovec`, use `cargo add zerovec` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `yoke`
[INFO] [stdout]  --> examples/yoke_derive.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use yoke::{Yoke, Yokeable};
[INFO] [stdout]   |     ^^^^ use of unresolved module or unlinked crate `yoke`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `yoke`, use `cargo add yoke` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `zerovec`
[INFO] [stdout]  --> examples/yoke_derive.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use zerovec::{maps::ZeroMapKV, ule::AsULE, VarZeroVec, ZeroMap, ZeroVec};
[INFO] [stdout]   |     ^^^^^^^ use of unresolved module or unlinked crate `zerovec`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `zerovec`, use `cargo add zerovec` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:326:3
[INFO] [stdout]     |
[INFO] [stdout] 326 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 327 + #[derive(Yokeable)]
[INFO] [stdout] 328 | enum ManualAlmostEverything<
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:282:3
[INFO] [stdout]     |
[INFO] [stdout] 282 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 283 + #[derive(Yokeable)]
[INFO] [stdout] 284 | enum ManualUninhabited<'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:273:3
[INFO] [stdout]     |
[INFO] [stdout] 273 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 274 + #[derive(Yokeable)]
[INFO] [stdout] 275 | enum ManualEmpty {}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:263:3
[INFO] [stdout]     |
[INFO] [stdout] 263 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 264 + #[derive(Yokeable)]
[INFO] [stdout] 265 | enum ManualEnum {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:249:3
[INFO] [stdout]     |
[INFO] [stdout] 249 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 250 + #[derive(Yokeable)]
[INFO] [stdout] 251 | struct ManualVariadic<'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:228:3
[INFO] [stdout]     |
[INFO] [stdout] 228 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 229 + #[derive(Yokeable)]
[INFO] [stdout] 230 | struct ManualYokeLifetime<'r#_yoke>(&'r#_yoke str, for<'yoke> fn(&'yoke ()));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:219:3
[INFO] [stdout]     |
[INFO] [stdout] 219 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 220 + #[derive(Yokeable)]
[INFO] [stdout] 221 | struct ManualMixedRawLifetime<'r#a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:207:3
[INFO] [stdout]     |
[INFO] [stdout] 207 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 208 + #[derive(Yokeable)]
[INFO] [stdout] 209 | struct ManualRawLifetime<'r#mod> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:195:3
[INFO] [stdout]     |
[INFO] [stdout] 195 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 196 + #[derive(Yokeable)]
[INFO] [stdout] 197 | struct ManualInvariantStatic<'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:183:3
[INFO] [stdout]     |
[INFO] [stdout] 183 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 184 + #[derive(Yokeable)]
[INFO] [stdout] 185 | struct ManualBoundFn<'a>(&'a (), for<'b> fn(&'b ()));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:171:3
[INFO] [stdout]     |
[INFO] [stdout] 171 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 172 + #[derive(Yokeable)]
[INFO] [stdout] 173 | struct ManualWithTraitBoundsInWhere<T>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:157:3
[INFO] [stdout]     |
[INFO] [stdout] 157 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 158 + #[derive(Yokeable)]
[INFO] [stdout] 159 | struct ManualWithTraitBounds<T: Trait> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:129:3
[INFO] [stdout]     |
[INFO] [stdout] 129 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 130 + #[derive(Yokeable)]
[INFO] [stdout] 131 | struct ManualMaybeSizedWrap<T, Q: ?Sized, U: ?Sized> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:115:3
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 116 + #[derive(Yokeable)]
[INFO] [stdout] 117 | struct ManualZeroMapGenericExample<'a, T: for<'b> ZeroMapKV<'b> + ?Sized> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]    --> examples/yoke_derive.rs:109:3
[INFO] [stdout]     |
[INFO] [stdout] 109 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]     |   ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]     |
[INFO] [stdout] 110 + #[derive(Yokeable)]
[INFO] [stdout] 111 | struct ManualZeroMapExample<'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:97:3
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 98 + #[derive(Yokeable)]
[INFO] [stdout] 99 | struct ManualZeroVecExampleWithGenerics<'a, T: AsULE> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:83:3
[INFO] [stdout]    |
[INFO] [stdout] 83 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 84 + #[derive(Yokeable)]
[INFO] [stdout] 85 | struct ManualZeroVecExample<'not_a> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 68 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 69 + #[derive(Yokeable)]
[INFO] [stdout] 70 | struct ManualCowExample<'a> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:53:3
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 54 + #[derive(Yokeable)]
[INFO] [stdout] 55 | struct ManualGenericsExampleWithDefault<T, U = usize> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 41 + #[derive(Yokeable)]
[INFO] [stdout] 42 | struct ManualGenericsExample<T> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:28:3
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 29 + #[derive(Yokeable)]
[INFO] [stdout] 30 | struct ManualIntExample {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `yoke` in this scope
[INFO] [stdout]   --> examples/yoke_derive.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[yoke(prove_covariance_manually)]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: `yoke` is an attribute that can be used by the derive macro `Yokeable`, you might be missing a `derive` attribute
[INFO] [stdout]    |
[INFO] [stdout] 18 + #[derive(Yokeable)]
[INFO] [stdout] 19 | struct ManualStringExample {
[INFO] [stdout]    |
[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] [stderr] error: could not compile `yoke-derive` (example "yoke_derive") due to 25 previous errors
[INFO] running `Command { std: "docker" "inspect" "8ca7e303cdb362c042ddf468c081eb778e69002d370a9174188f457f57d75cd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ca7e303cdb362c042ddf468c081eb778e69002d370a9174188f457f57d75cd5", kill_on_drop: false }`
[INFO] [stdout] 8ca7e303cdb362c042ddf468c081eb778e69002d370a9174188f457f57d75cd5