[INFO] fetching crate lewton 0.10.2... [INFO] testing lewton-0.10.2 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1 [INFO] extracting crate lewton 0.10.2 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate lewton 0.10.2 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate lewton 0.10.2 [INFO] tweaked toml for crates.io crate lewton 0.10.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate lewton 0.10.2 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate lewton 0.10.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9ce48ed59d9e0aff0397198f7a2d5bf9e1081ef323bb6f2458edd00a97617059 [INFO] running `Command { std: "docker" "start" "-a" "9ce48ed59d9e0aff0397198f7a2d5bf9e1081ef323bb6f2458edd00a97617059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9ce48ed59d9e0aff0397198f7a2d5bf9e1081ef323bb6f2458edd00a97617059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ce48ed59d9e0aff0397198f7a2d5bf9e1081ef323bb6f2458edd00a97617059", kill_on_drop: false }` [INFO] [stdout] 9ce48ed59d9e0aff0397198f7a2d5bf9e1081ef323bb6f2458edd00a97617059 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b77f80e6ac8c5bd0a06722cfe188c582224d01698c2b18834716376bb5be7214 [INFO] running `Command { std: "docker" "start" "-a" "b77f80e6ac8c5bd0a06722cfe188c582224d01698c2b18834716376bb5be7214", kill_on_drop: false }` [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling tinyvec v1.0.1 [INFO] [stderr] Compiling ogg v0.8.0 [INFO] [stderr] Compiling lewton v0.10.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:9:17 [INFO] [stdout] | [INFO] [stdout] 9 | #![cfg_attr(not(cargo_c), forbid(unsafe_code))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `docsrs`, `feature`, and `test` and 31 more [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:111:7 [INFO] [stdout] | [INFO] [stdout] 111 | #[cfg(cargo_c)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:114:7 [INFO] [stdout] | [INFO] [stdout] 114 | #[cfg(cargo_c)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `codebook_entries` is never read [INFO] [stdout] --> src/header.rs:363:6 [INFO] [stdout] | [INFO] [stdout] 361 | pub(crate) struct Codebook { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 362 | pub codebook_dimensions :u16, [INFO] [stdout] 363 | pub codebook_entries :u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `mapping_submaps` is never read [INFO] [stdout] --> src/header.rs:382:6 [INFO] [stdout] | [INFO] [stdout] 381 | pub(crate) struct Mapping { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 382 | pub mapping_submaps :u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `floor0_rate` and `floor0_bark_map_size` are never read [INFO] [stdout] --> src/header.rs:402:6 [INFO] [stdout] | [INFO] [stdout] 400 | pub(crate) struct FloorTypeZero { [INFO] [stdout] | ------------- fields in this struct [INFO] [stdout] 401 | pub floor0_order :u8, [INFO] [stdout] 402 | pub floor0_rate :u16, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 403 | pub floor0_bark_map_size :u16, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/bitpacking.rs:364:31 [INFO] [stdout] | [INFO] [stdout] 364 | pub fn new(arr : &'a[u8]) -> BitpackCursor { [INFO] [stdout] | -- ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 364 | pub fn new(arr : &'a[u8]) -> BitpackCursor<'a> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.15s [INFO] running `Command { std: "docker" "inspect" "b77f80e6ac8c5bd0a06722cfe188c582224d01698c2b18834716376bb5be7214", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b77f80e6ac8c5bd0a06722cfe188c582224d01698c2b18834716376bb5be7214", kill_on_drop: false }` [INFO] [stdout] b77f80e6ac8c5bd0a06722cfe188c582224d01698c2b18834716376bb5be7214 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 373481a539b67d2ae17bf84fe88113d795d6760373ed47208c094acafe5defca [INFO] running `Command { std: "docker" "start" "-a" "373481a539b67d2ae17bf84fe88113d795d6760373ed47208c094acafe5defca", kill_on_drop: false }` [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling lazy_static v0.2.11 [INFO] [stderr] Compiling smallvec v0.6.13 [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:9:17 [INFO] [stdout] | [INFO] [stdout] 9 | #![cfg_attr(not(cargo_c), forbid(unsafe_code))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `docsrs`, `feature`, and `test` and 31 more [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:111:7 [INFO] [stdout] | [INFO] [stdout] 111 | #[cfg(cargo_c)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `cargo_c` [INFO] [stdout] --> src/lib.rs:114:7 [INFO] [stdout] | [INFO] [stdout] 114 | #[cfg(cargo_c)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(cargo_c)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(cargo_c)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `codebook_entries` is never read [INFO] [stdout] --> src/header.rs:363:6 [INFO] [stdout] | [INFO] [stdout] 361 | pub(crate) struct Codebook { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 362 | pub codebook_dimensions :u16, [INFO] [stdout] 363 | pub codebook_entries :u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `mapping_submaps` is never read [INFO] [stdout] --> src/header.rs:382:6 [INFO] [stdout] | [INFO] [stdout] 381 | pub(crate) struct Mapping { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 382 | pub mapping_submaps :u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `floor0_rate` and `floor0_bark_map_size` are never read [INFO] [stdout] --> src/header.rs:402:6 [INFO] [stdout] | [INFO] [stdout] 400 | pub(crate) struct FloorTypeZero { [INFO] [stdout] | ------------- fields in this struct [INFO] [stdout] 401 | pub floor0_order :u8, [INFO] [stdout] 402 | pub floor0_rate :u16, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 403 | pub floor0_bark_map_size :u16, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/bitpacking.rs:364:31 [INFO] [stdout] | [INFO] [stdout] 364 | pub fn new(arr : &'a[u8]) -> BitpackCursor { [INFO] [stdout] | -- ^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 364 | pub fn new(arr : &'a[u8]) -> BitpackCursor<'a> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling owning_ref v0.3.3 [INFO] [stderr] Compiling cmake v0.1.42 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling libloading v0.5.2 [INFO] [stderr] Compiling al-sys v0.6.1 [INFO] [stderr] Compiling parking_lot_core v0.2.14 [INFO] [stderr] Compiling parking_lot v0.4.8 [INFO] [stderr] Compiling rental-impl v0.5.5 [INFO] [stderr] Compiling rental v0.5.5 [INFO] [stdout] error: proc-macro derive panicked [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rental-0.5.5/src/lib.rs:93:12 [INFO] [stdout] | [INFO] [stdout] 93 | #[derive(__rental_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 117 | define_rental_traits!(32); [INFO] [stdout] | ------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = help: message: expected suffix ").0," not found in "#[allow(unused)] enum ProceduralMasqueradeDummyType\n{ Input = (0, stringify! (32)).0 }" [INFO] [stdout] = note: this error originates in the macro `define_rental_traits` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: proc-macro derive panicked [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rental-0.5.5/src/lib.rs:257:13 [INFO] [stdout] | [INFO] [stdout] 257 | #[derive(__rental_structs_and_impls)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 285 | / rental! { [INFO] [stdout] 286 | | /// Example types that demonstrate the API generated by the rental macro. [INFO] [stdout] 287 | | pub mod examples { [INFO] [stdout] 288 | | use std::sync; [INFO] [stdout] ... | [INFO] [stdout] 346 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = help: message: expected suffix ").0," not found in "#[allow(unused)] enum ProceduralMasqueradeDummyType\n{\n Input =\n (0, stringify!\n (use std::sync;\n #[doc =\n r\" The simplest shared rental. The head is a boxed integer, and the suffix is a ref to that integer. This struct demonstrates the basic API that all shared rental structs have. See [`SimpleMut`](struct.SimpleMut.html) for the mutable analog.\"]\n #[rental] pub struct SimpleRef { head: Box, iref: &'head i32, }\n #[doc =\n r\" The simplest mutable rental. Mutable rentals have a slightly different API; compare this struct to [`SimpleRef`](struct.SimpleRef.html) for the clearest picture of how they differ.\"]\n #[rental_mut] pub struct SimpleMut\n { head: Box, iref: &'head mut i32, }\n #[doc =\n r\" Identical to [`SimpleRef`](struct.SimpleRef.html), but with the `debug` flag enabled. This will provide a `Debug` impl for the struct as long as all of the fields are `Debug`.\"]\n #[rental(debug)] pub struct SimpleRefDebug\n { head: Box, iref: &'head i32, }\n #[doc =\n r\" Similar to [`SimpleRef`](struct.SimpleRef.html), but with the `clone` flag enabled. This will provide a `Clone` impl for the struct as long as the prefix fields are `CloneStableDeref` and the suffix is `Clone` . Notice that the head is an `Arc`, since a clone of an `Arc` will deref to the same object as the original.\"]\n #[rental(clone)] pub struct SimpleRefClone\n { head: sync::Arc, iref: &'head i32, }\n #[doc =\n r\" Identical to [`SimpleRef`](struct.SimpleRef.html), but with the `deref_suffix` flag enabled. This will provide a `Deref` impl for the struct, which will in turn deref the suffix. Notice that this flag also removes the `self` param from all methods, replacing it with an explicit param. This prevents any rental methods from blocking deref.\"]\n #[rental(deref_suffix)] pub struct SimpleRefDeref\n { head: Box, iref: &'head i32, }\n #[doc =\n r\" Identical to [`SimpleMut`](struct.SimpleMut.html), but with the `deref_mut_suffix` flag enabled. This will provide a `DerefMut` impl for the struct, which will in turn deref the suffix.Notice that this flag also removes the `self` param from all methods, replacing it with an explicit param. This prevents any rental methods from blocking deref.\"]\n #[rental_mut(deref_mut_suffix)] pub struct SimpleMutDeref\n { head: Box, iref: &'head mut i32, }\n #[doc =\n r\" Identical to [`SimpleRef`](struct.SimpleRef.html), but with the `covariant` flag enabled. For rental structs where the field types have covariant lifetimes, this will allow you to directly borrow the fields, as they can be safely reborrowed to a shorter lifetime. See the [`all`](struct.SimpleRefCovariant.html#method.all) and [`suffix`](struct.SimpleRefCovariant.html#method.suffix) methods.\"]\n #[rental(covariant)] pub struct SimpleRefCovariant\n { head: Box, iref: &'head i32, }\n #[doc =\n r\" Identical to [`SimpleRef`](struct.SimpleRef.html), but with the `map_suffix` flag enabled. This will allow the type of the suffix to be changed by mapping it to another instantiation of the same struct with the different type param. See the [`map`](struct.SimpleRefMap.html#method.map), [`try_map`](struct.SimpleRefMap.html#method.try_map), and [`try_map_or_drop`](struct.SimpleRefMap.html#method.try_map_or_drop) methods.\"]\n #[rental(map_suffix = \"T\")] pub struct SimpleRefMap\n { head: Box, iref: &'head T, })).0\n}" [INFO] [stdout] = note: this error originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: proc-macro derive panicked [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rental-0.5.5/src/lib.rs:257:13 [INFO] [stdout] | [INFO] [stdout] 257 | #[derive(__rental_structs_and_impls)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 350 | / rental! { [INFO] [stdout] 351 | | /// Premade types for the most common use cases. [INFO] [stdout] 352 | | pub mod common { [INFO] [stdout] 353 | | use std::ops::DerefMut; [INFO] [stdout] ... | [INFO] [stdout] 485 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = help: message: expected suffix ").0," not found in "#[allow(unused)] enum ProceduralMasqueradeDummyType\n{\n Input =\n (0, stringify!\n (use std::ops::DerefMut; use stable_deref_trait::StableDeref; use\n std::cell; use std::sync;\n #[doc = r\" Stores an owner and a shared reference in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentRef;\"] #[doc = r\" # fn main() {\"]\n #[doc = r\" let r = RentRef::new(Box::new(5), |i| &*i);\"]\n #[doc = r\" assert_eq!(*r, RentRef::rent(&r, |iref| **iref));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental(debug, clone, deref_suffix, covariant, map_suffix = \"T\")] pub\n struct RentRef\n { head: H, suffix: &'head T, }\n #[doc = r\" Stores an owner and a mutable reference in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentMut;\"] #[doc = r\" # fn main() {\"]\n #[doc = r\" let mut r = RentMut::new(Box::new(5), |i| &mut *i);\"]\n #[doc = r\" *r = 12;\"]\n #[doc = r\" assert_eq!(12, RentMut::rent(&mut r, |iref| **iref));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental_mut(debug, deref_mut_suffix, covariant, map_suffix = \"T\")] pub\n struct RentMut\n { head: H, suffix: &'head mut T, }\n #[doc = r\" Stores a `RefCell` and a `Ref` in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentRefCell;\"] #[doc = r\" # fn main() {\"]\n #[doc = r\" use std::cell;\"] #[doc = r\"\"]\n #[doc =\n r\" let r = RentRefCell::new(Box::new(cell::RefCell::new(5)), |c| c.borrow());\"]\n #[doc = r\" assert_eq!(*r, RentRefCell::rent(&r, |c| **c));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental(debug, clone, deref_suffix, covariant, map_suffix = \"T\")] pub\n struct RentRefCell\n { head: H, suffix: cell::Ref<'head, T>, }\n #[doc = r\" Stores a `RefCell` and a `RefMut` in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentRefCellMut;\"]\n #[doc = r\" # fn main() {\"] #[doc = r\" use std::cell;\"] #[doc = r\"\"]\n #[doc =\n r\" let mut r = RentRefCellMut::new(Box::new(cell::RefCell::new(5)), |c| c.borrow_mut());\"]\n #[doc = r\" *r = 12;\"]\n #[doc = r\" assert_eq!(12, RentRefCellMut::rent(&r, |c| **c));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental_mut(debug, deref_mut_suffix, covariant, map_suffix = \"T\")] pub\n struct RentRefCellMut\n { head: H, suffix: cell::RefMut<'head, T>, }\n #[doc = r\" Stores a `Mutex` and a `MutexGuard` in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentMutex;\"] #[doc = r\" # fn main() {\"]\n #[doc = r\" use std::sync;\"] #[doc = r\"\"]\n #[doc =\n r\" let mut r = RentMutex::new(Box::new(sync::Mutex::new(5)), |c| c.lock().unwrap());\"]\n #[doc = r\" *r = 12;\"]\n #[doc = r\" assert_eq!(12, RentMutex::rent(&r, |c| **c));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental(debug, clone, deref_mut_suffix, covariant, map_suffix = \"T\")] pub\n struct RentMutex\n { head: H, suffix: sync::MutexGuard<'head, T>, }\n #[doc =\n r\" Stores an `RwLock` and an `RwLockReadGuard` in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentRwLock;\"] #[doc = r\" # fn main() {\"]\n #[doc = r\" use std::sync;\"] #[doc = r\"\"]\n #[doc =\n r\" let r = RentRwLock::new(Box::new(sync::RwLock::new(5)), |c| c.read().unwrap());\"]\n #[doc = r\" assert_eq!(*r, RentRwLock::rent(&r, |c| **c));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental(debug, clone, deref_suffix, covariant, map_suffix = \"T\")] pub\n struct RentRwLock\n { head: H, suffix: sync::RwLockReadGuard<'head, T>, }\n #[doc =\n r\" Stores an `RwLock` and an `RwLockWriteGuard` in the same struct.\"]\n #[doc = r\"\"] #[doc = r\" ```rust\"] #[doc = r\" # extern crate rental;\"]\n #[doc = r\" # use rental::common::RentRwLockMut;\"]\n #[doc = r\" # fn main() {\"] #[doc = r\" use std::sync;\"] #[doc = r\"\"]\n #[doc =\n r\" let mut r = RentRwLockMut::new(Box::new(sync::RwLock::new(5)), |c| c.write().unwrap());\"]\n #[doc = r\" *r = 12;\"]\n #[doc = r\" assert_eq!(12, RentRwLockMut::rent(&r, |c| **c));\"]\n #[doc = r\" # }\"] #[doc = r\" ```\"]\n #[rental(debug, clone, deref_mut_suffix, covariant, map_suffix = \"T\")] pub\n struct RentRwLockMut\n { head: H, suffix: sync::RwLockWriteGuard<'head, T>, })).0\n}" [INFO] [stdout] = note: this error originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rental` (lib) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "373481a539b67d2ae17bf84fe88113d795d6760373ed47208c094acafe5defca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "373481a539b67d2ae17bf84fe88113d795d6760373ed47208c094acafe5defca", kill_on_drop: false }` [INFO] [stdout] 373481a539b67d2ae17bf84fe88113d795d6760373ed47208c094acafe5defca