[INFO] fetching crate upto 0.1.5...
[INFO] testing upto-0.1.5 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate upto 0.1.5 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate upto 0.1.5
[INFO] finished tweaking crates.io crate upto 0.1.5
[INFO] tweaked toml for crates.io crate upto 0.1.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate upto 0.1.5 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 531c7e918d3e1419be8463502774df50cb4961ad2daa7b868478f869878abe1c
[INFO] running `Command { std: "docker" "start" "-a" "531c7e918d3e1419be8463502774df50cb4961ad2daa7b868478f869878abe1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "531c7e918d3e1419be8463502774df50cb4961ad2daa7b868478f869878abe1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "531c7e918d3e1419be8463502774df50cb4961ad2daa7b868478f869878abe1c", kill_on_drop: false }`
[INFO] [stdout] 531c7e918d3e1419be8463502774df50cb4961ad2daa7b868478f869878abe1c
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4858fe0bd2bb22d1cdb9dcfd0bb8a00d9fb9c814ba8082ae5751d754d0987f65
[INFO] running `Command { std: "docker" "start" "-a" "4858fe0bd2bb22d1cdb9dcfd0bb8a00d9fb9c814ba8082ae5751d754d0987f65", kill_on_drop: false }`
[INFO] [stderr]    Compiling upto v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `maybe_uninit_uninit_array`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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]    --> src/lib.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 |             array: MaybeUninit::uninit_array::<N>(),
[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/caccb4d0368bd918ef6668af8e13834d07040417/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] 126 -             array: MaybeUninit::uninit_array::<N>(),
[INFO] [stdout] 126 +             array: MaybeUninit::uninit::<N>(),
[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]    --> src/lib.rs:510:59
[INFO] [stdout]     |
[INFO] [stdout] 510 |         let mut array: [MaybeUninit<T>; N] = MaybeUninit::uninit_array::<N>();
[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/caccb4d0368bd918ef6668af8e13834d07040417/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] 510 -         let mut array: [MaybeUninit<T>; N] = MaybeUninit::uninit_array::<N>();
[INFO] [stdout] 510 +         let mut array: [MaybeUninit<T>; N] = MaybeUninit::uninit::<N>();
[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 `upto` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4858fe0bd2bb22d1cdb9dcfd0bb8a00d9fb9c814ba8082ae5751d754d0987f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4858fe0bd2bb22d1cdb9dcfd0bb8a00d9fb9c814ba8082ae5751d754d0987f65", kill_on_drop: false }`
[INFO] [stdout] 4858fe0bd2bb22d1cdb9dcfd0bb8a00d9fb9c814ba8082ae5751d754d0987f65