[INFO] fetching crate ratz 0.0.1...
[INFO] checking ratz-0.0.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate ratz 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ratz 0.0.1
[INFO] finished tweaking crates.io crate ratz 0.0.1
[INFO] tweaked toml for crates.io crate ratz 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ratz 0.0.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c02e41bcddc97a6c2cb24d882d5bd11cf9decf712cf300bcc719f0096fdedd12
[INFO] running `Command { std: "docker" "start" "-a" "c02e41bcddc97a6c2cb24d882d5bd11cf9decf712cf300bcc719f0096fdedd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c02e41bcddc97a6c2cb24d882d5bd11cf9decf712cf300bcc719f0096fdedd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02e41bcddc97a6c2cb24d882d5bd11cf9decf712cf300bcc719f0096fdedd12", kill_on_drop: false }`
[INFO] [stdout] c02e41bcddc97a6c2cb24d882d5bd11cf9decf712cf300bcc719f0096fdedd12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3a85725427b88eeea3558ece3eb1491e77f73cf28f0407bd577b6c26832ce93
[INFO] running `Command { std: "docker" "start" "-a" "f3a85725427b88eeea3558ece3eb1491e77f73cf28f0407bd577b6c26832ce93", kill_on_drop: false }`
[INFO] [stderr]     Checking ratz v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Associative` is never used
[INFO] [stdout]  --> src/associative.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Associative {
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeBoth` is never used
[INFO] [stdout]  --> src/associative_both.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait AssociativeBoth<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeEither` is never used
[INFO] [stdout]  --> src/associative_either.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait AssociativeEither<'a>: Hkt<'a> {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeFlatten` is never used
[INFO] [stdout]  --> src/associative_flatten.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait AssociativeFlatten<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Commutative` is never used
[INFO] [stdout]  --> src/commutative.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Commutative: Associative {}
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Either` is never used
[INFO] [stdout]  --> src/core.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Either<A, B> {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OptionFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct OptionFamily;
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VectorFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct VectorFamily;
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ResultFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ResultFamily<'a, E: 'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ResultFamily2` is never constructed
[INFO] [stdout]   --> src/core.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ResultFamily2;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Covariant` is never used
[INFO] [stdout]  --> src/covariant.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Covariant<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hkt` is never used
[INFO] [stdout]  --> src/hkt.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Hkt<'a> {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mirror` is never used
[INFO] [stdout]  --> src/hkt.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mirror<'a>: Sized + 'a {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hkt2` is never used
[INFO] [stdout]  --> src/hkt2.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Hkt2<'a> {
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mirror2` is never used
[INFO] [stdout]  --> src/hkt2.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mirror2<'a>: Sized + 'a {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Idempotent` is never used
[INFO] [stdout]  --> src/idempotent.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Idempotent: Associative {}
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Identity` is never used
[INFO] [stdout]  --> src/identity.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Identity: Associative {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IdentityBoth` is never used
[INFO] [stdout]  --> src/identity_both.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait IdentityBoth<'a>: AssociativeBoth<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IdentityFlatten` is never used
[INFO] [stdout]  --> src/identity_flatten.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait IdentityFlatten<'a>: AssociativeFlatten<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Inverse` is never used
[INFO] [stdout]  --> src/inverse.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Inverse: Identity {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Monad` is never used
[INFO] [stdout]  --> src/monad.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Monad<'a>: AssociativeFlatten<'a> + Covariant<'a> {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MonadSyntax` is never used
[INFO] [stdout]   --> src/monad.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait MonadSyntax<'a, Mon: Monad<'a>>: Mirror<'a, Family = Mon> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Traversable` is never used
[INFO] [stdout]  --> src/traversable.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Traversable<'a>: Covariant<'a> {
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Associative` is never used
[INFO] [stdout]  --> src/associative.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Associative {
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeBoth` is never used
[INFO] [stdout]  --> src/associative_both.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait AssociativeBoth<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeEither` is never used
[INFO] [stdout]  --> src/associative_either.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait AssociativeEither<'a>: Hkt<'a> {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssociativeFlatten` is never used
[INFO] [stdout]  --> src/associative_flatten.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait AssociativeFlatten<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Commutative` is never used
[INFO] [stdout]  --> src/commutative.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Commutative: Associative {}
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Either` is never used
[INFO] [stdout]  --> src/core.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Either<A, B> {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OptionFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct OptionFamily;
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VectorFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct VectorFamily;
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ResultFamily` is never constructed
[INFO] [stdout]  --> src/core.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ResultFamily<'a, E: 'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ResultFamily2` is never constructed
[INFO] [stdout]   --> src/core.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ResultFamily2;
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Covariant` is never used
[INFO] [stdout]  --> src/covariant.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Covariant<'a>: Hkt<'a> {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hkt` is never used
[INFO] [stdout]  --> src/hkt.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Hkt<'a> {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mirror` is never used
[INFO] [stdout]  --> src/hkt.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mirror<'a>: Sized + 'a {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hkt2` is never used
[INFO] [stdout]  --> src/hkt2.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Hkt2<'a> {
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mirror2` is never used
[INFO] [stdout]  --> src/hkt2.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mirror2<'a>: Sized + 'a {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Idempotent` is never used
[INFO] [stdout]  --> src/idempotent.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Idempotent: Associative {}
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Identity` is never used
[INFO] [stdout]  --> src/identity.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Identity: Associative {
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IdentityBoth` is never used
[INFO] [stdout]  --> src/identity_both.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait IdentityBoth<'a>: AssociativeBoth<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IdentityFlatten` is never used
[INFO] [stdout]  --> src/identity_flatten.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait IdentityFlatten<'a>: AssociativeFlatten<'a> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Inverse` is never used
[INFO] [stdout]  --> src/inverse.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Inverse: Identity {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Monad` is never used
[INFO] [stdout]  --> src/monad.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Monad<'a>: AssociativeFlatten<'a> + Covariant<'a> {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MonadSyntax` is never used
[INFO] [stdout]   --> src/monad.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait MonadSyntax<'a, Mon: Monad<'a>>: Mirror<'a, Family = Mon> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Traversable` is never used
[INFO] [stdout]  --> src/traversable.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Traversable<'a>: Covariant<'a> {
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "f3a85725427b88eeea3558ece3eb1491e77f73cf28f0407bd577b6c26832ce93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a85725427b88eeea3558ece3eb1491e77f73cf28f0407bd577b6c26832ce93", kill_on_drop: false }`
[INFO] [stdout] f3a85725427b88eeea3558ece3eb1491e77f73cf28f0407bd577b6c26832ce93