[INFO] fetching crate poplar 0.1.0...
[INFO] testing poplar-0.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate poplar 0.1.0 into /workspace/builds/worker-7-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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate poplar 0.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to highest compatible versions
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.5)
[INFO] [stderr]       Adding pci_types v0.2.0 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93
[INFO] running `Command { std: "docker" "start" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ptah v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ptah-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(decl_macro, maybe_uninit_uninit_array, maybe_uninit_slice, never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `never_type` has been stable since `1.100.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[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 associated function or constant 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]    |                                                           ^^^^^^^^^^^^ associated function or constant 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/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/mem/maybe_uninit.rs:406:4
[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] error[E0599]: no associated function or constant named `slice_as_mut_ptr` 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:70:46
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let start_ptr: *mut T = MaybeUninit::slice_as_mut_ptr(&mut array);
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^ associated function or constant 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/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is a method `as_mut_ptr` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/mem/maybe_uninit.rs:659:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ptah` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93", kill_on_drop: false }`
[INFO] [stdout] 1f07391adea3c888c406bde888309209b29beef349ef94487aae380852ec2a93
