[INFO] fetching crate sized_matrix 0.3.0...
[INFO] building sized_matrix-0.3.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate sized_matrix 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate sized_matrix 0.3.0
[INFO] finished tweaking crates.io crate sized_matrix 0.3.0
[INFO] tweaked toml for crates.io crate sized_matrix 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sized_matrix 0.3.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 57 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-sync v0.9.5
[INFO] [stderr]   Downloaded higher_order_functions v0.2.0
[INFO] [stderr]   Downloaded toml v0.7.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b894fa6a29e5dc455f37f0da337bff2f17e827a1212e9b024d7d79ad6b55449b
[INFO] running `Command { std: "docker" "start" "-a" "b894fa6a29e5dc455f37f0da337bff2f17e827a1212e9b024d7d79ad6b55449b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b894fa6a29e5dc455f37f0da337bff2f17e827a1212e9b024d7d79ad6b55449b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b894fa6a29e5dc455f37f0da337bff2f17e827a1212e9b024d7d79ad6b55449b", kill_on_drop: false }`
[INFO] [stdout] b894fa6a29e5dc455f37f0da337bff2f17e827a1212e9b024d7d79ad6b55449b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47e7c5df4de28ce4588fa60c6107ebbf02bb5280ff567bf2a7c59e5230f6089b
[INFO] running `Command { std: "docker" "start" "-a" "47e7c5df4de28ce4588fa60c6107ebbf02bb5280ff567bf2a7c59e5230f6089b", kill_on_drop: false }`
[INFO] [stderr]    Compiling higher_order_functions v0.2.0
[INFO] [stdout] error[E0635]: unknown feature `maybe_uninit_uninit_array`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/higher_order_functions-0.2.0/src/lib.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | #![feature(maybe_uninit_uninit_array)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/higher_order_functions-0.2.0/src/init.rs:63:56
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut contents: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[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/c7f6aa2869acdbf014d094c6e427e554e160b6db/library/core/src/mem/maybe_uninit.rs:307:5
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 63 -         let mut contents: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout] 63 +         let mut contents: [MaybeUninit<T>; N] = MaybeUninit::uninit();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/higher_order_functions-0.2.0/src/zip.rs:55:58
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut contents: [MaybeUninit<TTo>; N] = MaybeUninit::uninit_array();
[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/c7f6aa2869acdbf014d094c6e427e554e160b6db/library/core/src/mem/maybe_uninit.rs:307:5
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 55 -         let mut contents: [MaybeUninit<TTo>; N] = MaybeUninit::uninit_array();
[INFO] [stdout] 55 +         let mut contents: [MaybeUninit<TTo>; N] = MaybeUninit::uninit();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `higher_order_functions` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "47e7c5df4de28ce4588fa60c6107ebbf02bb5280ff567bf2a7c59e5230f6089b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e7c5df4de28ce4588fa60c6107ebbf02bb5280ff567bf2a7c59e5230f6089b", kill_on_drop: false }`
[INFO] [stdout] 47e7c5df4de28ce4588fa60c6107ebbf02bb5280ff567bf2a7c59e5230f6089b