[INFO] fetching crate fliphash 0.1.0...
[INFO] testing fliphash-0.1.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate fliphash 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate fliphash 0.1.0
[INFO] finished tweaking crates.io crate fliphash 0.1.0
[INFO] tweaked toml for crates.io crate fliphash 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fliphash 0.1.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 86 packages to highest compatible versions
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[INFO] [stderr]       Adding statrs v0.16.1 (available: v0.19.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926
[INFO] running `Command { std: "docker" "start" "58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling fliphash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926", kill_on_drop: false }`
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[INFO] [stderr]    Compiling fliphash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` is not satisfied
[INFO] [stdout]    --> src/lib.rs:345:22
[INFO] [stdout]     |
[INFO] [stdout] 345 |         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout]     |                      ^^^ the trait `DerefMut` is not implemented for `R`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `R` to implement `rand_core::TryRng`
[INFO] [stdout]     = note: required for `R` to implement `_IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] note: the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` appears on the `impl`'s method `sample` but not on the corresponding trait's method
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/distributions/distribution.rs:37:8
[INFO] [stdout]     |
[INFO] [stdout]  35 | pub trait Distribution<T> {
[INFO] [stdout]     |           ------------ in this trait
[INFO] [stdout]  36 |     /// Generate a random value of `T`, using `rng` as the source of randomness.
[INFO] [stdout]  37 |     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> T;
[INFO] [stdout]     |        ^^^^^^ this trait's method doesn't have the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] help: consider further restricting type parameter `R` with trait `DerefMut`
[INFO] [stdout]     |
[INFO] [stdout] 345 |         fn sample<R: Rng + ?Sized + core::ops::DerefMut>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout]     |                                   +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` is not satisfied
[INFO] [stdout]    --> src/lib.rs:345:22
[INFO] [stdout]     |
[INFO] [stdout] 345 |         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout]     |                   -  ^^^ the trait `Sized` is not implemented for `R`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this type parameter needs to be `Sized`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `R` to implement `rand_core::TryRng`
[INFO] [stdout]     = note: required for `R` to implement `_IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] note: the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` appears on the `impl`'s method `sample` but not on the corresponding trait's method
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/distributions/distribution.rs:37:8
[INFO] [stdout]     |
[INFO] [stdout]  35 | pub trait Distribution<T> {
[INFO] [stdout]     |           ------------ in this trait
[INFO] [stdout]  36 |     /// Generate a random value of `T`, using `rng` as the source of randomness.
[INFO] [stdout]  37 |     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> T;
[INFO] [stdout]     |        ^^^^^^ this trait's method doesn't have the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]     |
[INFO] [stdout] 345 -         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout] 345 +         fn sample<R: Rng>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` is not satisfied
[INFO] [stdout]    --> src/lib.rs:358:22
[INFO] [stdout]     |
[INFO] [stdout] 358 |         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout]     |                      ^^^ the trait `DerefMut` is not implemented for `R`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `R` to implement `rand_core::TryRng`
[INFO] [stdout]     = note: required for `R` to implement `_IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] note: the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` appears on the `impl`'s method `sample` but not on the corresponding trait's method
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/distributions/distribution.rs:37:8
[INFO] [stdout]     |
[INFO] [stdout]  35 | pub trait Distribution<T> {
[INFO] [stdout]     |           ------------ in this trait
[INFO] [stdout]  36 |     /// Generate a random value of `T`, using `rng` as the source of randomness.
[INFO] [stdout]  37 |     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> T;
[INFO] [stdout]     |        ^^^^^^ this trait's method doesn't have the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] help: consider further restricting type parameter `R` with trait `DerefMut`
[INFO] [stdout]     |
[INFO] [stdout] 358 |         fn sample<R: Rng + ?Sized + core::ops::DerefMut>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout]     |                                   +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` is not satisfied
[INFO] [stdout]    --> src/lib.rs:358:22
[INFO] [stdout]     |
[INFO] [stdout] 358 |         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout]     |                   -  ^^^ the trait `Sized` is not implemented for `R`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this type parameter needs to be `Sized`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `R` to implement `rand_core::TryRng`
[INFO] [stdout]     = note: required for `R` to implement `_IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] note: the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng` appears on the `impl`'s method `sample` but not on the corresponding trait's method
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/distributions/distribution.rs:37:8
[INFO] [stdout]     |
[INFO] [stdout]  35 | pub trait Distribution<T> {
[INFO] [stdout]     |           ------------ in this trait
[INFO] [stdout]  36 |     /// Generate a random value of `T`, using `rng` as the source of randomness.
[INFO] [stdout]  37 |     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> T;
[INFO] [stdout]     |        ^^^^^^ this trait's method doesn't have the requirement `R: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]     |
[INFO] [stdout] 358 -         fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout] 358 +         fn sample<R: Rng>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `R: rand::Rng` is not satisfied
[INFO] [stdout]    --> src/lib.rs:346:32
[INFO] [stdout]     |
[INFO] [stdout] 346 |             U64Key(self.sample(rng))
[INFO] [stdout]     |                         ------ ^^^ the trait `rand::RngCore` is not implemented for `R`
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] note: there are multiple different versions of crate `rand_core` in the dependency graph
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand_core-0.6.4/src/lib.rs:142:1
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub trait RngCore {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ this is the expected trait
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand_core-0.10.1/src/lib.rs:257:1
[INFO] [stdout]     |
[INFO] [stdout] 257 | pub trait RngCore: Rng {}
[INFO] [stdout]     | ---------------------- this is the found trait
[INFO] [stdout]     = help: you can use `cargo tree` to explore your dependency tree
[INFO] [stdout]     = note: required for `R` to implement `rand::Rng`
[INFO] [stdout] note: required by a bound in `rand::distributions::Distribution::sample`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/distributions/distribution.rs:37:18
[INFO] [stdout]     |
[INFO] [stdout]  37 |     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> T;
[INFO] [stdout]     |                  ^^^ required by this bound in `Distribution::sample`
[INFO] [stdout] help: consider further restricting type parameter `R` with trait `RngCore`
[INFO] [stdout]     |
[INFO] [stdout] 345 |         fn sample<R: Rng + ?Sized + rand::RngCore>(&self, rng: &mut R) -> U64Key {
[INFO] [stdout]     |                                   +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for mutable reference `&mut R` in the current scope
[INFO] [stdout]    --> src/lib.rs:362:41
[INFO] [stdout]     |
[INFO] [stdout] 362 |             let mut bytes = vec![0; rng.gen_range(SIZE_RANGE)];
[INFO] [stdout]     |                                         ^^^^^^^^^ method not found in `&mut R`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stdout] help: the following trait defines an item `gen_range`, perhaps you need to restrict type parameter `R` with it:
[INFO] [stdout]     |
[INFO] [stdout] 358 |         fn sample<R: Rng + ?Sized + rand::Rng>(&self, rng: &mut R) -> Bytes {
[INFO] [stdout]     |                                   +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:515:27
[INFO] [stdout]     |
[INFO] [stdout] 515 |                 seed: rng.gen::<S>(),
[INFO] [stdout]     |                           ^^^ method not found in `ThreadRng`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  93 |     fn gen<T>(&mut self) -> T
[INFO] [stdout]     |        --- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `gen` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:516:39
[INFO] [stdout]     |
[INFO] [stdout] 516 |                 range: ..=H::from(rng.gen_range(2..200)).unwrap(),
[INFO] [stdout]     |                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn gen_range<T, R>(&mut self, range: R) -> T
[INFO] [stdout]     |        --------- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `gen_ratio` with a similar name, but with different arguments
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:517:33
[INFO] [stdout]     |
[INFO] [stdout] 517 |                 num_hashes: rng.gen_range(100..10000),
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn gen_range<T, R>(&mut self, range: R) -> T
[INFO] [stdout]     |        --------- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `gen_ratio` with a similar name, but with different arguments
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `next_u64` exists for struct `ThreadRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:518:35
[INFO] [stdout]     |
[INFO] [stdout] 518 |                 key_rng_seed: rng.next_u64(),
[INFO] [stdout]     |                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/thread.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 | pub struct ThreadRng {
[INFO] [stdout]     | -------------------- doesn't satisfy `<_ as TryRng>::Error = Infallible`, `ThreadRng: rand_core::TryRng` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<ThreadRng as rand_core::TryRng>::Error = Infallible`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             `ThreadRng: rand_core::TryRng`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `RngCore` which provides `next_u64` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::RngCore;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:521:97
[INFO] [stdout]     |
[INFO] [stdout] 498 |     fn regularity<K, S, H>(fliphash_with_seed: impl Fn(&K, S, RangeToInclusive<H>) -> H)
[INFO] [stdout]     |                         - expected this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 521 |                 let mut num_occurrences = vec![0_u64; test_case.range.end.to_usize().unwrap() + 1];
[INFO] [stdout]     |                                                                                                 ^ expected type parameter `H`, found integer
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `H`
[INFO] [stdout]                          found type `{integer}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `sample_iter` exists for struct `StdRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:523:22
[INFO] [stdout]     |
[INFO] [stdout] 522 | /                 StdRng::seed_from_u64(test_case.key_rng_seed)
[INFO] [stdout] 523 | |                     .sample_iter(Standard)
[INFO] [stdout]     | |_____________________-^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/std.rs:34:1
[INFO] [stdout]     |
[INFO] [stdout]  34 |   pub struct StdRng(Rng);
[INFO] [stdout]     |   ----------------- doesn't satisfy `StdRng: rand::distributions::Distribution<_>`, `_: RngExt` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             which is required by `&StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `sample_iter` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:586:58
[INFO] [stdout]     |
[INFO] [stdout] 586 |                 seeds: array::from_fn::<S, N, _>(|_| rng.gen()),
[INFO] [stdout]     |                                                          ^^^ method not found in `ThreadRng`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  93 |     fn gen<T>(&mut self) -> T
[INFO] [stdout]     |        --- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `gen` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:587:45
[INFO] [stdout]     |
[INFO] [stdout] 587 |                 range: ..=NumCast::from(rng.gen_range(5..20)).unwrap(),
[INFO] [stdout]     |                                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn gen_range<T, R>(&mut self, range: R) -> T
[INFO] [stdout]     |        --------- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `gen_ratio` with a similar name, but with different arguments
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:588:33
[INFO] [stdout]     |
[INFO] [stdout] 588 |                 num_hashes: rng.gen_range(100..10000),
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn gen_range<T, R>(&mut self, range: R) -> T
[INFO] [stdout]     |        --------- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `gen_ratio` with a similar name, but with different arguments
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `next_u64` exists for struct `ThreadRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:589:35
[INFO] [stdout]     |
[INFO] [stdout] 589 |                 key_rng_seed: rng.next_u64(),
[INFO] [stdout]     |                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/thread.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 | pub struct ThreadRng {
[INFO] [stdout]     | -------------------- doesn't satisfy `<_ as TryRng>::Error = Infallible`, `ThreadRng: rand_core::TryRng` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<ThreadRng as rand_core::TryRng>::Error = Infallible`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             `ThreadRng: rand_core::TryRng`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `RngCore` which provides `next_u64` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::RngCore;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `sample_iter` exists for struct `StdRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:603:22
[INFO] [stdout]     |
[INFO] [stdout] 602 | /                 StdRng::seed_from_u64(test_case.key_rng_seed)
[INFO] [stdout] 603 | |                     .sample_iter(Standard)
[INFO] [stdout]     | |_____________________-^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/std.rs:34:1
[INFO] [stdout]     |
[INFO] [stdout]  34 |   pub struct StdRng(Rng);
[INFO] [stdout]     |   ----------------- doesn't satisfy `StdRng: rand::distributions::Distribution<_>`, `_: RngExt` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             which is required by `&StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `sample_iter` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:670:27
[INFO] [stdout]     |
[INFO] [stdout] 670 |                 seed: rng.gen(),
[INFO] [stdout]     |                           ^^^ method not found in `ThreadRng`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:93:8
[INFO] [stdout]     |
[INFO] [stdout]  93 |     fn gen<T>(&mut self) -> T
[INFO] [stdout]     |        --- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `gen` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_range` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/lib.rs:679:33
[INFO] [stdout]     |
[INFO] [stdout] 679 |                 num_hashes: rng.gen_range(100..10000),
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn gen_range<T, R>(&mut self, range: R) -> T
[INFO] [stdout]     |        --------- the method is available for `ThreadRng` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `gen_ratio` with a similar name, but with different arguments
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rng.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `next_u64` exists for struct `ThreadRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:680:35
[INFO] [stdout]     |
[INFO] [stdout] 680 |                 key_rng_seed: rng.next_u64(),
[INFO] [stdout]     |                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/thread.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 | pub struct ThreadRng {
[INFO] [stdout]     | -------------------- doesn't satisfy `<_ as TryRng>::Error = Infallible`, `ThreadRng: rand_core::TryRng` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<ThreadRng as rand_core::TryRng>::Error = Infallible`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             `ThreadRng: rand_core::TryRng`
[INFO] [stdout]             which is required by `ThreadRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `RngCore` which provides `next_u64` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::RngCore;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `sample_iter` exists for struct `StdRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:707:22
[INFO] [stdout]     |
[INFO] [stdout] 706 | /                 StdRng::seed_from_u64(test_case.key_rng_seed)
[INFO] [stdout] 707 | |                     .sample_iter(Standard)
[INFO] [stdout]     | |_____________________-^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.8/src/rngs/std.rs:34:1
[INFO] [stdout]     |
[INFO] [stdout]  34 |   pub struct StdRng(Rng);
[INFO] [stdout]     |   ----------------- doesn't satisfy `StdRng: rand::distributions::Distribution<_>`, `_: RngExt` or `_: Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             which is required by `&StdRng: rand::distributions::Distribution<_>`
[INFO] [stdout]             `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]             `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::Rng`
[INFO] [stdout]             which is required by `&mut StdRng: _IMPL_ARBITRARY_FOR_U64Key::_proptest::prelude::RngExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `sample_iter` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 267 +     use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fliphash` (lib test) due to 21 previous errors
[INFO] running `Command { std: "docker" "inspect" "58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926", kill_on_drop: false }`
[INFO] [stdout] 58968dbb28635ed4b06b2213c76ba90aecfb6667bb530ea36cd2622d35372926
