[INFO] fetching crate fuzzcheck 0.13.0... [INFO] checking fuzzcheck-0.13.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate fuzzcheck 0.13.0 into /workspace/builds/worker-1-tc1/source [INFO] started tweaking crates.io crate fuzzcheck 0.13.0 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate fuzzcheck 0.13.0 [INFO] tweaked toml for crates.io crate fuzzcheck 0.13.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate fuzzcheck 0.13.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 46 packages to latest compatible versions [INFO] [stderr] Adding ahash v0.7.8 (available: v0.8.12) [INFO] [stderr] Adding bit-vec v0.6.3 (available: v0.8.0) [INFO] [stderr] Adding fastrand v1.9.0 (available: v2.3.0) [INFO] [stderr] Adding md5 v0.7.0 (available: v0.8.0) [INFO] [stderr] Adding nu-ansi-term v0.46.0 (available: v0.50.1) [INFO] [stderr] Adding object v0.29.0 (available: v0.37.1) [INFO] [stderr] Adding regex-syntax v0.6.29 (available: v0.8.5) [INFO] [stderr] Adding ron v0.7.1 (available: v0.10.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded fuzzcheck_mutators_derive v0.13.0 [INFO] [stderr] Downloaded fuzzcheck_common v0.13.0 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6c21cac02a77166d9fcd9374643868ca561e58349891b1308db3d64c459a6803 [INFO] running `Command { std: "docker" "start" "-a" "6c21cac02a77166d9fcd9374643868ca561e58349891b1308db3d64c459a6803", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6c21cac02a77166d9fcd9374643868ca561e58349891b1308db3d64c459a6803", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c21cac02a77166d9fcd9374643868ca561e58349891b1308db3d64c459a6803", kill_on_drop: false }` [INFO] [stdout] 6c21cac02a77166d9fcd9374643868ca561e58349891b1308db3d64c459a6803 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c21c86edfac4cf7d82459083876c8e0c1e77d1875d7d06d7fc8c58dda5e26237 [INFO] running `Command { std: "docker" "start" "-a" "c21c86edfac4cf7d82459083876c8e0c1e77d1875d7d06d7fc8c58dda5e26237", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.174 [INFO] [stderr] Compiling pkg-config v0.3.32 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking unicode-width v0.2.1 [INFO] [stderr] Compiling ahash v0.7.8 [INFO] [stderr] Checking crc32fast v1.4.2 [INFO] [stderr] Checking once_cell v1.21.3 [INFO] [stderr] Checking object v0.29.0 [INFO] [stderr] Checking md5 v0.7.0 [INFO] [stderr] Checking fastrand v1.9.0 [INFO] [stderr] Compiling fuzzcheck v0.13.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking regex-syntax v0.6.29 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling libz-sys v1.1.22 [INFO] [stderr] Checking getopts v0.2.23 [INFO] [stderr] Checking fuzzcheck_common v0.13.0 [INFO] [stderr] Checking flate2 v1.1.2 [INFO] [stderr] Checking getrandom v0.2.16 [INFO] [stderr] Compiling fuzzcheck_mutators_derive v0.13.0 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Checking serde v1.0.219 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:696:26 [INFO] [stdout] | [INFO] [stdout] 696 | pub type DiverseSensor = impl WrapperSensor< [INFO] [stdout] | __________________________^ [INFO] [stdout] 697 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 698 | | Observations = (::Observations, usize), [INFO] [stdout] 699 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `DiverseSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:696:26 [INFO] [stdout] | [INFO] [stdout] 696 | pub type DiverseSensor = impl WrapperSensor< [INFO] [stdout] | __________________________^ [INFO] [stdout] 697 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 698 | | Observations = (::Observations, usize), [INFO] [stdout] 699 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `DiverseSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:700:26 [INFO] [stdout] | [INFO] [stdout] 700 | pub type MaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________^ [INFO] [stdout] 701 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 702 | | Observations = (::Observations, u64), [INFO] [stdout] 703 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `MaxHitsSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:700:26 [INFO] [stdout] | [INFO] [stdout] 700 | pub type MaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________^ [INFO] [stdout] 701 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 702 | | Observations = (::Observations, u64), [INFO] [stdout] 703 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `MaxHitsSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:704:34 [INFO] [stdout] | [INFO] [stdout] 704 | pub type BasicAndMaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________________^ [INFO] [stdout] 705 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 706 | | Observations = (::Observations, u64), [INFO] [stdout] 707 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `BasicAndMaxHitsSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/builder.rs:704:34 [INFO] [stdout] | [INFO] [stdout] 704 | pub type BasicAndMaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________________^ [INFO] [stdout] 705 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 706 | | Observations = (::Observations, u64), [INFO] [stdout] 707 | | >; [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `BasicAndMaxHitsSensor` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/mutators/string.rs:17:26 [INFO] [stdout] | [INFO] [stdout] 17 | pub type StringMutator = impl Mutator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `StringMutator` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/mutators/string.rs:17:26 [INFO] [stdout] | [INFO] [stdout] 17 | pub type StringMutator = impl Mutator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `StringMutator` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:755:28 [INFO] [stdout] | [INFO] [stdout] 700 | pub type MaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________- [INFO] [stdout] 701 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 702 | | Observations = (::Observations, u64), [INFO] [stdout] 703 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 739 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 755 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `MaxHitsSensor` [INFO] [stdout] found struct `MapSensor, u64), {closure@src/builder.rs:739:9: 739:12}>` [INFO] [stdout] note: this item must have a `#[define_opaque(MaxHitsSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:734:8 [INFO] [stdout] | [INFO] [stdout] 734 | pub fn max_cov_hits_sensor_and_pool() -> SensorAndPoolBuilder { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:879:32 [INFO] [stdout] | [INFO] [stdout] 696 | pub type DiverseSensor = impl WrapperSensor< [INFO] [stdout] | __________________________- [INFO] [stdout] 697 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 698 | | Observations = (::Observations, usize), [INFO] [stdout] 699 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 862 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 879 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `DiverseSensor` [INFO] [stdout] found struct `MapSensor, usize), {closure@src/builder.rs:862:13: 862:16}>` [INFO] [stdout] note: this item must have a `#[define_opaque(DiverseSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:855:12 [INFO] [stdout] | [INFO] [stdout] 855 | pub fn find_most_diverse_set_of_test_cases( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:755:28 [INFO] [stdout] | [INFO] [stdout] 700 | pub type MaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________- [INFO] [stdout] 701 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 702 | | Observations = (::Observations, u64), [INFO] [stdout] 703 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 739 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 755 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `MaxHitsSensor` [INFO] [stdout] found struct `MapSensor, u64), {closure@src/builder.rs:739:9: 739:12}>` [INFO] [stdout] note: this item must have a `#[define_opaque(MaxHitsSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:734:8 [INFO] [stdout] | [INFO] [stdout] 734 | pub fn max_cov_hits_sensor_and_pool() -> SensorAndPoolBuilder { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:912:32 [INFO] [stdout] | [INFO] [stdout] 704 | pub type BasicAndMaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________________- [INFO] [stdout] 705 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 706 | | Observations = (::Observations, u64), [INFO] [stdout] 707 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 889 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 912 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `BasicAndMaxHitsSensor` [INFO] [stdout] found struct `MapSensor, u64), {closure@src/builder.rs:889:13: 889:16}>` [INFO] [stdout] note: this item must have a `#[define_opaque(BasicAndMaxHitsSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:883:12 [INFO] [stdout] | [INFO] [stdout] 883 | pub fn find_test_cases_repeatedly_hitting_coverage_counters( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:879:32 [INFO] [stdout] | [INFO] [stdout] 696 | pub type DiverseSensor = impl WrapperSensor< [INFO] [stdout] | __________________________- [INFO] [stdout] 697 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 698 | | Observations = (::Observations, usize), [INFO] [stdout] 699 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 862 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 879 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `DiverseSensor` [INFO] [stdout] found struct `MapSensor, usize), {closure@src/builder.rs:862:13: 862:16}>` [INFO] [stdout] note: this item must have a `#[define_opaque(DiverseSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:855:12 [INFO] [stdout] | [INFO] [stdout] 855 | pub fn find_most_diverse_set_of_test_cases( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/builder.rs:912:32 [INFO] [stdout] | [INFO] [stdout] 704 | pub type BasicAndMaxHitsSensor = impl WrapperSensor< [INFO] [stdout] | __________________________________- [INFO] [stdout] 705 | | Wrapped = CodeCoverageSensor, [INFO] [stdout] 706 | | Observations = (::Observations, u64), [INFO] [stdout] 707 | | >; [INFO] [stdout] | |_- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 889 | |o| { [INFO] [stdout] | --- the found closure [INFO] [stdout] ... [INFO] [stdout] 912 | SensorAndPoolBuilder { sensor, pool } [INFO] [stdout] | ^^^^^^ expected opaque type, found `MapSensor` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `BasicAndMaxHitsSensor` [INFO] [stdout] found struct `MapSensor, u64), {closure@src/builder.rs:889:13: 889:16}>` [INFO] [stdout] note: this item must have a `#[define_opaque(BasicAndMaxHitsSensor)]` attribute to be able to define hidden types [INFO] [stdout] --> src/builder.rs:883:12 [INFO] [stdout] | [INFO] [stdout] 883 | pub fn find_test_cases_repeatedly_hitting_coverage_counters( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/mutators/string.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 17 | pub type StringMutator = impl Mutator; [INFO] [stdout] | -------------------- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn string_mutator() -> StringMutator { [INFO] [stdout] | ------------- expected `StringMutator` because of return type [INFO] [stdout] 21 | / MapMutator::new( [INFO] [stdout] 22 | | // the base mutator produces values of type Vector [INFO] [stdout] 23 | | >::default_mutator(), [INFO] [stdout] ... | [INFO] [stdout] 32 | | |value, _cplx| (value.as_bytes().len() * 8) as f64, [INFO] [stdout] 33 | | ) [INFO] [stdout] | |_____^ expected opaque type, found `MapMutator<..., ..., ..., ..., ..., ...>` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `StringMutator` [INFO] [stdout] found struct `MapMutator, String, VecMutator, ..., ..., ...>` [INFO] [stdout] note: this item must have a `#[define_opaque(StringMutator)]` attribute to be able to define hidden types [INFO] [stdout] --> src/mutators/string.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn string_mutator() -> StringMutator { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/fuzzcheck-ca9f4bb21fd02922.long-type-8544158208879235582.txt' [INFO] [stdout] = note: consider using `--verbose` to print the full type name to the console [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/mutators/string.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 17 | pub type StringMutator = impl Mutator; [INFO] [stdout] | -------------------- the expected opaque type [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn string_mutator() -> StringMutator { [INFO] [stdout] | ------------- expected `StringMutator` because of return type [INFO] [stdout] 21 | / MapMutator::new( [INFO] [stdout] 22 | | // the base mutator produces values of type Vector [INFO] [stdout] 23 | | >::default_mutator(), [INFO] [stdout] ... | [INFO] [stdout] 32 | | |value, _cplx| (value.as_bytes().len() * 8) as f64, [INFO] [stdout] 33 | | ) [INFO] [stdout] | |_____^ expected opaque type, found `MapMutator<..., ..., ..., ..., ..., ...>` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `StringMutator` [INFO] [stdout] found struct `MapMutator, String, VecMutator, ..., ..., ...>` [INFO] [stdout] note: this item must have a `#[define_opaque(StringMutator)]` attribute to be able to define hidden types [INFO] [stdout] --> src/mutators/string.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn string_mutator() -> StringMutator { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/fuzzcheck-029d0f668cac5aea.long-type-7659422028771250618.txt' [INFO] [stdout] = note: consider using `--verbose` to print the full type name to the console [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `fuzzcheck` (lib) due to 8 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `fuzzcheck` (lib test) due to 8 previous errors [INFO] running `Command { std: "docker" "inspect" "c21c86edfac4cf7d82459083876c8e0c1e77d1875d7d06d7fc8c58dda5e26237", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c21c86edfac4cf7d82459083876c8e0c1e77d1875d7d06d7fc8c58dda5e26237", kill_on_drop: false }` [INFO] [stdout] c21c86edfac4cf7d82459083876c8e0c1e77d1875d7d06d7fc8c58dda5e26237