[INFO] fetching crate overengineered_hkts 0.1.1...
[INFO] testing overengineered_hkts-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate overengineered_hkts 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate overengineered_hkts 0.1.1
[INFO] finished tweaking crates.io crate overengineered_hkts 0.1.1
[INFO] tweaked toml for crates.io crate overengineered_hkts 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate overengineered_hkts 0.1.1 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 overengineered_hkts 0.1.1 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 5bbbc517dfb3762840a221bab3371f3a764b269c987866243e5787b7ecc67066
[INFO] running `Command { std: "docker" "start" "-a" "5bbbc517dfb3762840a221bab3371f3a764b269c987866243e5787b7ecc67066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bbbc517dfb3762840a221bab3371f3a764b269c987866243e5787b7ecc67066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bbbc517dfb3762840a221bab3371f3a764b269c987866243e5787b7ecc67066", kill_on_drop: false }`
[INFO] [stdout] 5bbbc517dfb3762840a221bab3371f3a764b269c987866243e5787b7ecc67066
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2fa217261492df6a7cb3d762ddcdf5858f883465baa6792bfa84f088043f7336
[INFO] running `Command { std: "docker" "start" "-a" "2fa217261492df6a7cb3d762ddcdf5858f883465baa6792bfa84f088043f7336", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling toml_datetime v0.7.3
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling naan v0.1.32
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling try-specialize v0.1.2
[INFO] [stderr]    Compiling composing v0.2.0
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling indexmap v2.12.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling const-random v0.1.18
[INFO] [stderr]    Compiling toml_parser v1.0.4
[INFO] [stderr]    Compiling toml_edit v0.23.7
[INFO] [stderr]    Compiling proc-macro-crate v3.4.0
[INFO] [stderr]    Compiling triomphe v0.1.15
[INFO] [stderr]    Compiling linkme-impl v0.2.10
[INFO] [stderr]    Compiling intertrait-macros v0.2.2
[INFO] [stderr]    Compiling linkme v0.2.10
[INFO] [stderr]    Compiling intertrait v0.2.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling cast_trait_object_macros v0.1.4
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling negative-proc_macros v0.1.2
[INFO] [stderr]    Compiling negative-impl v0.1.6
[INFO] [stderr]    Compiling negative v0.1.2
[INFO] [stderr]    Compiling cast_trait_object v0.1.4
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling overengineered_hkts v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read `src/../../../../README.md`: No such file or directory (os error 2)
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![doc = include_str!("../../../../README.md")]
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a file with the same name in a different directory
[INFO] [stdout]   |
[INFO] [stdout] 1 - #![doc = include_str!("../../../../README.md")]
[INFO] [stdout] 1 + #![doc = include_str!("../README.md")]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hkt::traits::CovariantRefK`: Unused
[INFO] [stdout]  --> src/hkt/id.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::hkt::CovariantRefK;
[INFO] [stdout]   |                 ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hkt::traits::CovariantRefK`: Unused
[INFO] [stdout]    --> src/hkt/id.rs:267:10
[INFO] [stdout]     |
[INFO] [stdout] 267 | impl<'t> CovariantRefK<'t> for IdHkt {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `hkt::traits::ClonePtrHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:818:22
[INFO] [stdout]     |
[INFO] [stdout] 818 | impl<'t> Hkt<'t> for ClonePtrHkt {
[INFO] [stdout]     |                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `hkt::traits::ClonePtrHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:825:28
[INFO] [stdout]     |
[INFO] [stdout] 825 | impl HktClassification for ClonePtrHkt {
[INFO] [stdout]     |                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `hkt::traits::ClonePtrHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:829:54
[INFO] [stdout]     |
[INFO] [stdout] 829 | impl<'t, ReqIn: TypeGuard<'t>> CloneK<'t, ReqIn> for ClonePtrHkt {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hkt::traits::CloneFnHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:838:10
[INFO] [stdout]     |
[INFO] [stdout] 838 | impl<'t> CloneFnHkt<'t> for ClonePtrHkt {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `hkt::traits::ClonePtrHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:838:29
[INFO] [stdout]     |
[INFO] [stdout] 838 | impl<'t> CloneFnHkt<'t> for ClonePtrHkt {
[INFO] [stdout]     |                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hkt::traits::CloneFnHkt`: Unused
[INFO] [stdout]    --> src/hkt/traits.rs:899:10
[INFO] [stdout]     |
[INFO] [stdout] 899 | impl<'t> CloneFnHkt<'t> for DynCloneFnHkt {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnpin`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:262:9
[INFO] [stdout]     |
[INFO] [stdout] 262 | impl<T> IsUnpin<ConstBool<false>> for T {
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnpin`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:265:16
[INFO] [stdout]     |
[INFO] [stdout] 265 | impl<T: Unpin> IsUnpin<ConstBool<true>> for T {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 | impl<T> IsUnwindSafe<ConstBool<false>> for T {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:278:21
[INFO] [stdout]     |
[INFO] [stdout] 278 | impl<T: UnwindSafe> IsUnwindSafe<ConstBool<true>> for T {
[INFO] [stdout]     |                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsRefUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 | impl<T> IsRefUnwindSafe<ConstBool<false>> for T {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsRefUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:291:24
[INFO] [stdout]     |
[INFO] [stdout] 291 | impl<T: RefUnwindSafe> IsRefUnwindSafe<ConstBool<true>> for T {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::Wrapper`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:339:50
[INFO] [stdout]     |
[INFO] [stdout] 339 | unsafe impl<T: IsSend<ConstBool<true>>> Send for Wrapper<T> {}
[INFO] [stdout]     |                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::Wrapper`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:340:50
[INFO] [stdout]     |
[INFO] [stdout] 340 | unsafe impl<T: IsSync<ConstBool<true>>> Sync for Wrapper<T> {}
[INFO] [stdout]     |                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnpin`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 | impl<T: IsUnpin<ConstBool<true>>> Unpin for Wrapper<T> {}
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::Wrapper`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:341:45
[INFO] [stdout]     |
[INFO] [stdout] 341 | impl<T: IsUnpin<ConstBool<true>>> Unpin for Wrapper<T> {}
[INFO] [stdout]     |                                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 | impl<T: IsUnwindSafe<ConstBool<true>>> UnwindSafe for Wrapper<T> {}
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::Wrapper`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:342:55
[INFO] [stdout]     |
[INFO] [stdout] 342 | impl<T: IsUnwindSafe<ConstBool<true>>> UnwindSafe for Wrapper<T> {}
[INFO] [stdout]     |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsRefUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 343 | impl<T: IsRefUnwindSafe<ConstBool<true>>> RefUnwindSafe for Wrapper<T> {}
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::Wrapper`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:343:61
[INFO] [stdout]     |
[INFO] [stdout] 343 | impl<T: IsRefUnwindSafe<ConstBool<true>>> RefUnwindSafe for Wrapper<T> {}
[INFO] [stdout]     |                                                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::TraitRequirements`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:357:47
[INFO] [stdout]     |
[INFO] [stdout] 357 | pub(crate) trait TraitRequirementsTarget<Req: TraitRequirements>:
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnpin`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:360:7
[INFO] [stdout]     |
[INFO] [stdout] 360 |     + IsUnpin<Req::IsUnpin>
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsRefUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:361:7
[INFO] [stdout]     |
[INFO] [stdout] 361 |     + IsRefUnwindSafe<Req::IsRefUnwindSafe>
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::TraitRequirements`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:366:10
[INFO] [stdout]     |
[INFO] [stdout] 366 |     Req: TraitRequirements,
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsUnpin`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:369:11
[INFO] [stdout]     |
[INFO] [stdout] 369 |         + IsUnpin<Req::IsUnpin>
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::IsRefUnwindSafe`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:370:11
[INFO] [stdout]     |
[INFO] [stdout] 370 |         + IsRefUnwindSafe<Req::IsRefUnwindSafe>,
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::TraitRequirementsTarget`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:371:3
[INFO] [stdout]     |
[INFO] [stdout] 371 | > TraitRequirementsTarget<Req> for T
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `marker_classification::TraitRequirements`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 | impl<K> TraitRequirements for RequireNone<K> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::RequireNone`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:379:31
[INFO] [stdout]     |
[INFO] [stdout] 379 | impl<K> TraitRequirements for RequireNone<K> {
[INFO] [stdout]     |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::RequireNone`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:391:31
[INFO] [stdout]     |
[INFO] [stdout] 391 | impl<K> HktClassification for RequireNone<K> {
[INFO] [stdout]     |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::RequireNone`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:395:48
[INFO] [stdout]     |
[INFO] [stdout] 395 | impl<'t, K: UnsizedHkt<'t>> UnsizedHkt<'t> for RequireNone<K> {
[INFO] [stdout]     |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `marker_classification::RequireNone`: Unused
[INFO] [stdout]    --> src/marker_classification.rs:402:34
[INFO] [stdout]     |
[INFO] [stdout] 402 | impl<'t, K: Hkt<'t>> Hkt<'t> for RequireNone<K> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsSend`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:358:12
[INFO] [stdout]     |
[INFO] [stdout] 358 |     IsSend<Req::IsSend>
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsSync`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:359:14
[INFO] [stdout]     |
[INFO] [stdout] 359 |     + IsSync<Req::IsSync>
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsUnpin`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:360:15
[INFO] [stdout]     |
[INFO] [stdout] 360 |     + IsUnpin<Req::IsUnpin>
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsRefUnwindSafe`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:361:23
[INFO] [stdout]     |
[INFO] [stdout] 361 |     + IsRefUnwindSafe<Req::IsRefUnwindSafe>
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsSend`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:367:15
[INFO] [stdout]     |
[INFO] [stdout] 367 |     T: IsSend<Req::IsSend>
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsSync`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:368:18
[INFO] [stdout]     |
[INFO] [stdout] 368 |         + IsSync<Req::IsSync>
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsUnpin`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:369:19
[INFO] [stdout]     |
[INFO] [stdout] 369 |         + IsUnpin<Req::IsUnpin>
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated type `marker_classification::TraitRequirements::IsRefUnwindSafe`: The compiler cannot prove exhaustiveness
[INFO] [stdout]    --> src/marker_classification.rs:370:27
[INFO] [stdout]     |
[INFO] [stdout] 370 |         + IsRefUnwindSafe<Req::IsRefUnwindSafe>,
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Functor`
[INFO] [stdout]  --> src/hkt/laws/applicative.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         Functor,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t2`
[INFO] [stdout]    --> src/hkt/one_of.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |         map_t2: impl 'f + FnOnce(T2a) -> T2b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t3`
[INFO] [stdout]    --> src/hkt/one_of.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         map_t3: impl 'f + FnOnce(T3a) -> T3b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t4`
[INFO] [stdout]    --> src/hkt/one_of.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         map_t4: impl 'f + FnOnce(T4a) -> T4b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t5`
[INFO] [stdout]    --> src/hkt/one_of.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 208 |         map_t5: impl 'f + FnOnce(T5a) -> T5b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t1`
[INFO] [stdout]    --> src/hkt/one_of.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         map_t1: impl 'f + FnOnce(T1a) -> T1b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t3`
[INFO] [stdout]    --> src/hkt/one_of.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |         map_t3: impl 'f + FnOnce(T3a) -> T3b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t4`
[INFO] [stdout]    --> src/hkt/one_of.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 356 |         map_t4: impl 'f + FnOnce(T4a) -> T4b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t5`
[INFO] [stdout]    --> src/hkt/one_of.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 |         map_t5: impl 'f + FnOnce(T5a) -> T5b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t1`
[INFO] [stdout]    --> src/hkt/one_of.rs:502:9
[INFO] [stdout]     |
[INFO] [stdout] 502 |         map_t1: impl 'f + FnOnce(T1a) -> T1b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t2`
[INFO] [stdout]    --> src/hkt/one_of.rs:503:9
[INFO] [stdout]     |
[INFO] [stdout] 503 |         map_t2: impl 'f + FnOnce(T2a) -> T2b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t4`
[INFO] [stdout]    --> src/hkt/one_of.rs:505:9
[INFO] [stdout]     |
[INFO] [stdout] 505 |         map_t4: impl 'f + FnOnce(T4a) -> T4b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t5`
[INFO] [stdout]    --> src/hkt/one_of.rs:506:9
[INFO] [stdout]     |
[INFO] [stdout] 506 |         map_t5: impl 'f + FnOnce(T5a) -> T5b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t1`
[INFO] [stdout]    --> src/hkt/one_of.rs:651:9
[INFO] [stdout]     |
[INFO] [stdout] 651 |         map_t1: impl 'f + FnOnce(T1a) -> T1b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t2`
[INFO] [stdout]    --> src/hkt/one_of.rs:652:9
[INFO] [stdout]     |
[INFO] [stdout] 652 |         map_t2: impl 'f + FnOnce(T2a) -> T2b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t3`
[INFO] [stdout]    --> src/hkt/one_of.rs:653:9
[INFO] [stdout]     |
[INFO] [stdout] 653 |         map_t3: impl 'f + FnOnce(T3a) -> T3b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t5`
[INFO] [stdout]    --> src/hkt/one_of.rs:655:9
[INFO] [stdout]     |
[INFO] [stdout] 655 |         map_t5: impl 'f + FnOnce(T5a) -> T5b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t1`
[INFO] [stdout]    --> src/hkt/one_of.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |         map_t1: impl 'f + FnOnce(T1a) -> T1b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t2`
[INFO] [stdout]    --> src/hkt/one_of.rs:801:9
[INFO] [stdout]     |
[INFO] [stdout] 801 |         map_t2: impl 'f + FnOnce(T2a) -> T2b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t3`
[INFO] [stdout]    --> src/hkt/one_of.rs:802:9
[INFO] [stdout]     |
[INFO] [stdout] 802 |         map_t3: impl 'f + FnOnce(T3a) -> T3b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map_t4`
[INFO] [stdout]    --> src/hkt/one_of.rs:803:9
[INFO] [stdout]     |
[INFO] [stdout] 803 |         map_t4: impl 'f + FnOnce(T4a) -> T4b,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_map_t4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/marker_classification.rs:175:28
[INFO] [stdout]     |
[INFO] [stdout] 175 |     fn into_guarded<'a, A>(val: A) -> Self::Output<'a, A>
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `overengineered_hkts` (lib) due to 1 previous error; 64 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2fa217261492df6a7cb3d762ddcdf5858f883465baa6792bfa84f088043f7336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa217261492df6a7cb3d762ddcdf5858f883465baa6792bfa84f088043f7336", kill_on_drop: false }`
[INFO] [stdout] 2fa217261492df6a7cb3d762ddcdf5858f883465baa6792bfa84f088043f7336
