[INFO] fetching crate owned-buf 0.3.0...
[INFO] testing owned-buf-0.3.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate owned-buf 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate owned-buf 0.3.0
[INFO] finished tweaking crates.io crate owned-buf 0.3.0
[INFO] tweaked toml for crates.io crate owned-buf 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate owned-buf 0.3.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cc95fea21e47699187fa291d6e389b0fa1d5ed0a2be9601a6249a0f671f2dad
[INFO] running `Command { std: "docker" "start" "-a" "3cc95fea21e47699187fa291d6e389b0fa1d5ed0a2be9601a6249a0f671f2dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cc95fea21e47699187fa291d6e389b0fa1d5ed0a2be9601a6249a0f671f2dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cc95fea21e47699187fa291d6e389b0fa1d5ed0a2be9601a6249a0f671f2dad", kill_on_drop: false }`
[INFO] [stdout] 3cc95fea21e47699187fa291d6e389b0fa1d5ed0a2be9601a6249a0f671f2dad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa71b7472c0b6cb0feaaf75ab756fbaf4c24dec8f05b32a2f933df9c89eddff6
[INFO] running `Command { std: "docker" "start" "-a" "fa71b7472c0b6cb0feaaf75ab756fbaf4c24dec8f05b32a2f933df9c89eddff6", kill_on_drop: false }`
[INFO] [stderr]    Compiling owned-buf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `maybe_uninit_slice` has been stable since 1.93.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | #![feature(maybe_uninit_slice)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_write_slice` has been stable since 1.93.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 | #![feature(maybe_uninit_write_slice)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `vec_into_raw_parts` has been stable since 1.93.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 | #![feature(vec_into_raw_parts)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_ref` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:426:26
[INFO] [stdout]     |
[INFO] [stdout] 426 |             MaybeUninit::slice_assume_init_ref(slice::from_raw_parts(self.buf.data, self.end))
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions:
[INFO] [stdout]       MaybeUninit::<T>::new
[INFO] [stdout]       MaybeUninit::<T>::uninit
[INFO] [stdout]       MaybeUninit::<T>::zeroed
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is a method `assume_init_ref` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/mem/maybe_uninit.rs:893:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_mut` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:468:31
[INFO] [stdout]     |
[INFO] [stdout] 468 |         unsafe { MaybeUninit::slice_assume_init_mut(&mut self.buf_as_bytes()[start..end]) }
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions:
[INFO] [stdout]       MaybeUninit::<T>::new
[INFO] [stdout]       MaybeUninit::<T>::uninit
[INFO] [stdout]       MaybeUninit::<T>::zeroed
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is a method `assume_init_mut` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/mem/maybe_uninit.rs:1010:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `write_slice` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:551:26
[INFO] [stdout]     |
[INFO] [stdout] 551 |             MaybeUninit::write_slice(&mut self.as_mut()[..data.len()], data);
[INFO] [stdout]     |                          ^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions:
[INFO] [stdout]       MaybeUninit::<T>::new
[INFO] [stdout]       MaybeUninit::<T>::uninit
[INFO] [stdout]       MaybeUninit::<T>::zeroed
[INFO] [stdout]    --> /rustc/562dee4820c458d823175268e41601d4c060588a/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `owned-buf` (lib) due to 3 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fa71b7472c0b6cb0feaaf75ab756fbaf4c24dec8f05b32a2f933df9c89eddff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa71b7472c0b6cb0feaaf75ab756fbaf4c24dec8f05b32a2f933df9c89eddff6", kill_on_drop: false }`
[INFO] [stdout] fa71b7472c0b6cb0feaaf75ab756fbaf4c24dec8f05b32a2f933df9c89eddff6