box array to remove lifetime problems

1 job for master in 32 minutes and 57 seconds (queued for 2 seconds)
Name Stage Failure
failed
docker Prepare
error: Could not compile `std`.

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command did not execute successfully: "/src/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-hermit" "-j" "32" "--release" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/src/rust/src/libstd/Cargo.toml" "--message-format" "json"
expected success, got: exit code: 101
failed to run: /src/rust/build/bootstrap/debug/bootstrap install
Build completed unsuccessfully in 0:30:23
The command '/bin/sh -c cd /src/rust && ./x.py install' returned a non-zero code: 1
ERROR: Job failed: exit status 1