[INFO] fetching crate dark-integers 0.0.1...
[INFO] documenting dark-integers-0.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate dark-integers 0.0.1 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate dark-integers 0.0.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dark-integers 0.0.1
[INFO] finished tweaking crates.io crate dark-integers 0.0.1
[INFO] tweaked toml for crates.io crate dark-integers 0.0.1 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proptest v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71632b8d19bd5133eabf17b7c583054048b3d1b3aa7dc9a643387e1ee00298de
[INFO] running `Command { std: "docker" "start" "-a" "71632b8d19bd5133eabf17b7c583054048b3d1b3aa7dc9a643387e1ee00298de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71632b8d19bd5133eabf17b7c583054048b3d1b3aa7dc9a643387e1ee00298de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71632b8d19bd5133eabf17b7c583054048b3d1b3aa7dc9a643387e1ee00298de", kill_on_drop: false }`
[INFO] [stdout] 71632b8d19bd5133eabf17b7c583054048b3d1b3aa7dc9a643387e1ee00298de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6113f16e08529f6ba711a5ae54c56a6fe06dab34fa74740f6a82636a626af3e
[INFO] running `Command { std: "docker" "start" "-a" "d6113f16e08529f6ba711a5ae54c56a6fe06dab34fa74740f6a82636a626af3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]  Documenting dark-integers v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_generics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_evaluatable_checked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `generic_const_exprs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/mluint.rs:24:38
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn from_be_bytes(bytes: [u8; N * T::SIZE]) -> Self {
[INFO] [stdout]    |                                      ^ cannot perform const operation using `N`
[INFO] [stdout]    |
[INFO] [stdout]    = help: const parameters may only be used as standalone arguments, i.e. `N`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/mluint.rs:24:42
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn from_be_bytes(bytes: [u8; N * T::SIZE]) -> Self {
[INFO] [stdout]    |                                          ^^^^^^^ cannot perform const operation using `T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: type parameters may not be used in const expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/mluint.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn to_be_bytes(self) -> [u8; N * T::SIZE] {
[INFO] [stdout]    |                                      ^ cannot perform const operation using `N`
[INFO] [stdout]    |
[INFO] [stdout]    = help: const parameters may only be used as standalone arguments, i.e. `N`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/mluint.rs:36:42
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn to_be_bytes(self) -> [u8; N * T::SIZE] {
[INFO] [stdout]    |                                          ^^^^^^^ cannot perform const operation using `T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: type parameters may not be used in const expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/mluint.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut res = [0u8; N * T::SIZE];
[INFO] [stdout]    |                             ^ cannot perform const operation using `N`
[INFO] [stdout]    |
[INFO] [stdout]    = help: const parameters may only be used as standalone arguments, i.e. `N`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/utils.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn to_bytes(self) -> [u8; Self::SIZE];
[INFO] [stdout]    |                               ^^^^^^^^^^ cannot perform const operation using `Self`
[INFO] [stdout]    |
[INFO] [stdout]    = note: type parameters may not be used in const expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: generic parameters may not be used in const operations
[INFO] [stdout]   --> src/utils.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn from_bytes(bytes: &[u8; Self::SIZE]) -> Self;
[INFO] [stdout]    |                                ^^^^^^^^^^ cannot perform const operation using `Self`
[INFO] [stdout]    |
[INFO] [stdout]    = note: type parameters may not be used in const expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `dark-integers`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dark_integers src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c24cc89de6183212 -L dependency=/opt/rustwide/target/debug/deps --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-881ce0f8723e0e2d.rmeta --extern subtle=/opt/rustwide/target/debug/deps/libsubtle-999679ce737cde54.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d6113f16e08529f6ba711a5ae54c56a6fe06dab34fa74740f6a82636a626af3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6113f16e08529f6ba711a5ae54c56a6fe06dab34fa74740f6a82636a626af3e", kill_on_drop: false }`
[INFO] [stdout] d6113f16e08529f6ba711a5ae54c56a6fe06dab34fa74740f6a82636a626af3e