[INFO] fetching crate allsorts-rental 0.5.6...
[INFO] testing allsorts-rental-0.5.6 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate allsorts-rental 0.5.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate allsorts-rental 0.5.6 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate allsorts-rental 0.5.6
[INFO] finished tweaking crates.io crate allsorts-rental 0.5.6
[INFO] tweaked toml for crates.io crate allsorts-rental 0.5.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", 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] 06f3c4e109003a01e9e748bf2416aaac4eced3d000bf8d5dc115c4fa27055df0
[INFO] running `Command { std: "docker" "start" "-a" "06f3c4e109003a01e9e748bf2416aaac4eced3d000bf8d5dc115c4fa27055df0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06f3c4e109003a01e9e748bf2416aaac4eced3d000bf8d5dc115c4fa27055df0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f3c4e109003a01e9e748bf2416aaac4eced3d000bf8d5dc115c4fa27055df0", kill_on_drop: false }`
[INFO] [stdout] 06f3c4e109003a01e9e748bf2416aaac4eced3d000bf8d5dc115c4fa27055df0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fecd8ad59e6bfac8db2d2bb9094db2e39641784ab4b1cf10719458eed645e30a
[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" "fecd8ad59e6bfac8db2d2bb9094db2e39641784ab4b1cf10719458eed645e30a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling rental-impl v0.5.5
[INFO] [stderr]    Compiling allsorts-rental v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout] 94  |         enum ProceduralMasqueradeDummyType {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     define_rental_traits!(32);
[INFO] [stdout]     |     -------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(proc_macro_back_compat)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `define_rental_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 345 | |     }
[INFO] [stdout] 346 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 484 | |     }
[INFO] [stdout] 485 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.26s
[INFO] running `Command { std: "docker" "inspect" "fecd8ad59e6bfac8db2d2bb9094db2e39641784ab4b1cf10719458eed645e30a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fecd8ad59e6bfac8db2d2bb9094db2e39641784ab4b1cf10719458eed645e30a", kill_on_drop: false }`
[INFO] [stdout] fecd8ad59e6bfac8db2d2bb9094db2e39641784ab4b1cf10719458eed645e30a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--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] e479f9074fc24384031747d7fcb2e9eb58afd7bd4c4e90baafd0f0e3237dadce
[INFO] running `Command { std: "docker" "start" "-a" "e479f9074fc24384031747d7fcb2e9eb58afd7bd4c4e90baafd0f0e3237dadce", kill_on_drop: false }`
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout] 94  |         enum ProceduralMasqueradeDummyType {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     define_rental_traits!(32);
[INFO] [stdout]     |     -------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(proc_macro_back_compat)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `define_rental_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 345 | |     }
[INFO] [stdout] 346 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 484 | |     }
[INFO] [stdout] 485 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling allsorts-rental v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/lt_params.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allsorts-rental` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/complex.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/clone.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/target_ty_hack.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/debug.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/covariant.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/unused.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/vec_slice.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/generic.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/map.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/trait.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/subrental.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/simple_mut.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/string.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `rental`
[INFO] [stdout]  --> tests/simple_ref.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate rental;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout] 94  |         enum ProceduralMasqueradeDummyType {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     define_rental_traits!(32);
[INFO] [stdout]     |     -------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(proc_macro_back_compat)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `define_rental_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 345 | |     }
[INFO] [stdout] 346 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `procedural-masquerade` crate
[INFO] [stdout]    --> src/lib.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |               enum ProceduralMasqueradeDummyType {
[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] 484 | |     }
[INFO] [stdout] 485 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
[INFO] [stdout]     = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
[INFO] [stdout]     = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e479f9074fc24384031747d7fcb2e9eb58afd7bd4c4e90baafd0f0e3237dadce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e479f9074fc24384031747d7fcb2e9eb58afd7bd4c4e90baafd0f0e3237dadce", kill_on_drop: false }`
[INFO] [stdout] e479f9074fc24384031747d7fcb2e9eb58afd7bd4c4e90baafd0f0e3237dadce
