[INFO] fetching crate safer-ffi 0.0.5...
[INFO] checking safer-ffi-0.0.5 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate safer-ffi 0.0.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate safer-ffi 0.0.5 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking crates.io crate safer-ffi 0.0.5
[INFO] finished tweaking crates.io crate safer-ffi 0.0.5
[INFO] tweaked toml for crates.io crate safer-ffi 0.0.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e20d48d0bd2974a8d1e7ed5c92f17afd5fd470c9d3fab30ed200a8f1b6236184
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e20d48d0bd2974a8d1e7ed5c92f17afd5fd470c9d3fab30ed200a8f1b6236184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e20d48d0bd2974a8d1e7ed5c92f17afd5fd470c9d3fab30ed200a8f1b6236184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20d48d0bd2974a8d1e7ed5c92f17afd5fd470c9d3fab30ed200a8f1b6236184", kill_on_drop: false }`
[INFO] [stdout] e20d48d0bd2974a8d1e7ed5c92f17afd5fd470c9d3fab30ed200a8f1b6236184
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce48e2fc6a828630191896e0537ae0be812bc98752bbbb943c24b38eb9dcda6a
[INFO] running `Command { std: "docker" "start" "-a" "ce48e2fc6a828630191896e0537ae0be812bc98752bbbb943c24b38eb9dcda6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling mini_paste-proc_macro v0.1.11
[INFO] [stderr]    Compiling safer_ffi-proc_macro v0.0.5
[INFO] [stderr]    Compiling macro_rules_attribute-proc_macro v0.0.1
[INFO] [stderr]     Checking macro_rules_attribute v0.0.1
[INFO] [stderr]     Checking mini_paste v0.1.11
[INFO] [stderr]     Checking safer-ffi v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `safer_ffi::layout::derive_ReprC`
[INFO] [stdout]   --> tests/layout_macros.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         derive_ReprC,
[INFO] [stdout]    |         ^^^^^^^^^^^^ no `derive_ReprC` in `layout`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `derive_ReprC`
[INFO] [stdout]   --> tests/layout_macros.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive_ReprC]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `derive_ReprC`
[INFO] [stdout]   --> tests/layout_macros.rs:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 | #[derive_ReprC]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `derive_ReprC`
[INFO] [stdout]   --> tests/layout_macros.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive_ReprC]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `derive_ReprC`
[INFO] [stdout]    --> tests/layout_macros.rs:112:3
[INFO] [stdout]     |
[INFO] [stdout] 112 | #[derive_ReprC]
[INFO] [stdout]     |   ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `derive_ReprC`
[INFO] [stdout]    --> tests/layout_macros.rs:270:7
[INFO] [stdout]     |
[INFO] [stdout] 270 |     #[derive_ReprC]
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `c` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:317:40
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let mut it: char_p::Ref<'static> = c!();
[INFO] [stdout]     |                                        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `c` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:319:10
[INFO] [stdout]     |
[INFO] [stdout] 319 |     it = c!("Hello, World!");
[INFO] [stdout]     |          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |             MyBool_Layout(42)
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 284 |             MyBool_Layout(43)
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:290:13
[INFO] [stdout]     |
[INFO] [stdout] 290 |             MyBool_Layout(44)
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:297:13
[INFO] [stdout]     |
[INFO] [stdout] 297 |             MyBool_Layout(42)
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:303:13
[INFO] [stdout]     |
[INFO] [stdout] 303 |             MyBool_Layout(43)
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `MyBool_Layout` in this scope
[INFO] [stdout]    --> tests/layout_macros.rs:309:13
[INFO] [stdout]     |
[INFO] [stdout] 309 |             MyBool_Layout(unsafe { ::core::mem::transmute(None::<MyBool>) })
[INFO] [stdout]     |             ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `is_valid` found for struct `Foo<'_>` in the current scope
[INFO] [stdout]   --> tests/layout_macros.rs:60:14
[INFO] [stdout]    |
[INFO] [stdout] 43 | / pub
[INFO] [stdout] 44 | | struct Foo<'a> {
[INFO] [stdout] 45 | |     b: MyBool,
[INFO] [stdout] 46 | |     field: c_slice::Ref<'a, u32>,
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | | -
[INFO] [stdout]    | | |
[INFO] [stdout]    | |_function or associated item `is_valid` not found for this
[INFO] [stdout]    |   doesn't satisfy `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 60 |           Foo::is_valid(&
[INFO] [stdout]    |                ^^^^^^^^ function or associated item not found in `Foo<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&mut Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `is_valid` found for struct `Foo<'_>` in the current scope
[INFO] [stdout]   --> tests/layout_macros.rs:70:14
[INFO] [stdout]    |
[INFO] [stdout] 43 | / pub
[INFO] [stdout] 44 | | struct Foo<'a> {
[INFO] [stdout] 45 | |     b: MyBool,
[INFO] [stdout] 46 | |     field: c_slice::Ref<'a, u32>,
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | | -
[INFO] [stdout]    | | |
[INFO] [stdout]    | |_function or associated item `is_valid` not found for this
[INFO] [stdout]    |   doesn't satisfy `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 70 |           Foo::is_valid(&
[INFO] [stdout]    |                ^^^^^^^^ function or associated item not found in `Foo<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&mut Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `is_valid` found for struct `Foo<'_>` in the current scope
[INFO] [stdout]   --> tests/layout_macros.rs:81:24
[INFO] [stdout]    |
[INFO] [stdout] 43 | / pub
[INFO] [stdout] 44 | | struct Foo<'a> {
[INFO] [stdout] 45 | |     b: MyBool,
[INFO] [stdout] 46 | |     field: c_slice::Ref<'a, u32>,
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | | -
[INFO] [stdout]    | | |
[INFO] [stdout]    | |_function or associated item `is_valid` not found for this
[INFO] [stdout]    |   doesn't satisfy `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 81 |           bool::not(Foo::is_valid(&
[INFO] [stdout]    |                          ^^^^^^^^ function or associated item not found in `Foo<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&mut Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `is_valid` found for struct `Foo<'_>` in the current scope
[INFO] [stdout]   --> tests/layout_macros.rs:91:24
[INFO] [stdout]    |
[INFO] [stdout] 43 | / pub
[INFO] [stdout] 44 | | struct Foo<'a> {
[INFO] [stdout] 45 | |     b: MyBool,
[INFO] [stdout] 46 | |     field: c_slice::Ref<'a, u32>,
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | | -
[INFO] [stdout]    | | |
[INFO] [stdout]    | |_function or associated item `is_valid` not found for this
[INFO] [stdout]    |   doesn't satisfy `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 91 |           bool::not(Foo::is_valid(&
[INFO] [stdout]    |                          ^^^^^^^^ function or associated item not found in `Foo<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]            which is required by `&mut Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `is_valid` found for struct `Foo<'_>` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:101:24
[INFO] [stdout]     |
[INFO] [stdout] 43  | / pub
[INFO] [stdout] 44  | | struct Foo<'a> {
[INFO] [stdout] 45  | |     b: MyBool,
[INFO] [stdout] 46  | |     field: c_slice::Ref<'a, u32>,
[INFO] [stdout] 47  | | }
[INFO] [stdout]     | | -
[INFO] [stdout]     | | |
[INFO] [stdout]     | |_function or associated item `is_valid` not found for this
[INFO] [stdout]     |   doesn't satisfy `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 101 |           bool::not(Foo::is_valid(&
[INFO] [stdout]     |                          ^^^^^^^^ function or associated item not found in `Foo<'_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut Foo<'_>: safer_ffi::layout::ReprC`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `test_niche::MyBool` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:278:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     enum MyBool {
[INFO] [stdout]     |     -----------
[INFO] [stdout]     |     |
[INFO] [stdout]     |     variant or associated item `is_valid` not found here
[INFO] [stdout]     |     doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 278 |         MyBool::is_valid(&
[INFO] [stdout]     |                 ^^^^^^^^ variant or associated item not found in `test_niche::MyBool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `test_niche::MyBool` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:283:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     enum MyBool {
[INFO] [stdout]     |     -----------
[INFO] [stdout]     |     |
[INFO] [stdout]     |     variant or associated item `is_valid` not found here
[INFO] [stdout]     |     doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 283 |         MyBool::is_valid(&
[INFO] [stdout]     |                 ^^^^^^^^ variant or associated item not found in `test_niche::MyBool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `test_niche::MyBool` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:289:17
[INFO] [stdout]     |
[INFO] [stdout] 272 |     enum MyBool {
[INFO] [stdout]     |     -----------
[INFO] [stdout]     |     |
[INFO] [stdout]     |     variant or associated item `is_valid` not found here
[INFO] [stdout]     |     doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 289 |         MyBool::is_valid(&
[INFO] [stdout]     |                 ^^^^^^^^ variant or associated item not found in `test_niche::MyBool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `is_valid`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `std::option::Option<test_niche::MyBool>` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:296:27
[INFO] [stdout]     |
[INFO] [stdout] 272 |       enum MyBool {
[INFO] [stdout]     |       -----------
[INFO] [stdout]     |       |
[INFO] [stdout]     |       doesn't satisfy `_: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]     |       doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 296 |           <Option<MyBool>>::is_valid(&
[INFO] [stdout]     |                             ^^^^^^^^ variant or associated item not found in `std::option::Option<test_niche::MyBool>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `std::option::Option<test_niche::MyBool>` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:302:27
[INFO] [stdout]     |
[INFO] [stdout] 272 |       enum MyBool {
[INFO] [stdout]     |       -----------
[INFO] [stdout]     |       |
[INFO] [stdout]     |       doesn't satisfy `_: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]     |       doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 302 |           <Option<MyBool>>::is_valid(&
[INFO] [stdout]     |                             ^^^^^^^^ variant or associated item not found in `std::option::Option<test_niche::MyBool>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `is_valid` found for enum `std::option::Option<test_niche::MyBool>` in the current scope
[INFO] [stdout]    --> tests/layout_macros.rs:308:27
[INFO] [stdout]     |
[INFO] [stdout] 272 |       enum MyBool {
[INFO] [stdout]     |       -----------
[INFO] [stdout]     |       |
[INFO] [stdout]     |       doesn't satisfy `_: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]     |       doesn't satisfy `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout] ...
[INFO] [stdout] 308 |           <Option<MyBool>>::is_valid(&
[INFO] [stdout]     |                             ^^^^^^^^ variant or associated item not found in `std::option::Option<test_niche::MyBool>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method `is_valid` exists but the following trait bounds were not satisfied:
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `test_niche::MyBool: safer_ffi::layout::__HasNiche__`
[INFO] [stdout]             which is required by `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             `std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout]             which is required by `&mut std::option::Option<test_niche::MyBool>: safer_ffi::layout::ReprC`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 25 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `safer-ffi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ce48e2fc6a828630191896e0537ae0be812bc98752bbbb943c24b38eb9dcda6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce48e2fc6a828630191896e0537ae0be812bc98752bbbb943c24b38eb9dcda6a", kill_on_drop: false }`
[INFO] [stdout] ce48e2fc6a828630191896e0537ae0be812bc98752bbbb943c24b38eb9dcda6a
