[INFO] fetching crate poplar 0.1.0...
[INFO] testing poplar-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate poplar 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate poplar 0.1.0
[INFO] finished tweaking crates.io crate poplar 0.1.0
[INFO] tweaked toml for crates.io crate poplar 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate poplar 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.4)
[INFO] [stderr]       Adding pci_types v0.2.0 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60ebd38e41aa2c8d1f8d2424757b033182109825444142dfa509e8cf858ee309
[INFO] running `Command { std: "docker" "start" "-a" "60ebd38e41aa2c8d1f8d2424757b033182109825444142dfa509e8cf858ee309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60ebd38e41aa2c8d1f8d2424757b033182109825444142dfa509e8cf858ee309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60ebd38e41aa2c8d1f8d2424757b033182109825444142dfa509e8cf858ee309", kill_on_drop: false }`
[INFO] [stdout] 60ebd38e41aa2c8d1f8d2424757b033182109825444142dfa509e8cf858ee309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13225708743e332b4c0a395cdd928683a1abb4ec6636cce72d10f9be98c97e33
[INFO] running `Command { std: "docker" "start" "-a" "13225708743e332b4c0a395cdd928683a1abb4ec6636cce72d10f9be98c97e33", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling ptah 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/ptah-0.2.0/src/lib.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(decl_macro, maybe_uninit_uninit_array, maybe_uninit_slice, never_type)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pci_types v0.2.0
[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/ptah-0.2.0/src/de/impls.rs:69:59
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut array: [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/c2e32f1c9652b13ed99608599c1e855462f421f3/library/core/src/mem/maybe_uninit.rs:391:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 69 -         let mut array: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout] 69 +         let mut array: [MaybeUninit<T>; 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 `ptah` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "13225708743e332b4c0a395cdd928683a1abb4ec6636cce72d10f9be98c97e33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13225708743e332b4c0a395cdd928683a1abb4ec6636cce72d10f9be98c97e33", kill_on_drop: false }`
[INFO] [stdout] 13225708743e332b4c0a395cdd928683a1abb4ec6636cce72d10f9be98c97e33
