[INFO] fetching crate kiibohd-core-ffi 0.1.0...
[INFO] documenting kiibohd-core-ffi-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate kiibohd-core-ffi 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate kiibohd-core-ffi 0.1.0 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] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking crates.io crate kiibohd-core-ffi 0.1.0
[INFO] finished tweaking crates.io crate kiibohd-core-ffi 0.1.0
[INFO] tweaked toml for crates.io crate kiibohd-core-ffi 0.1.0 written to /workspace/builds/worker-5/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] [stderr]     Blocking waiting for file lock on package cache
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-primitive-derive v0.2.2
[INFO] [stderr]   Downloaded arraydeque v0.4.5
[INFO] [stderr]   Downloaded cstr_core v0.2.5
[INFO] [stderr]   Downloaded kll-hid v0.1.0
[INFO] [stderr]   Downloaded kll-macros v0.1.0
[INFO] [stderr]   Downloaded hid-io-protocol v0.1.1
[INFO] [stderr]   Downloaded c_utf8 v0.1.0
[INFO] [stderr]   Downloaded kiibohd-hid-io-ffi v0.1.0
[INFO] [stderr]   Downloaded kiibohd-usb v0.1.0
[INFO] [stderr]   Downloaded ssmarshal v1.0.0
[INFO] [stderr]   Downloaded transmute v0.1.1
[INFO] [stderr]   Downloaded pkg-version-impl v0.1.1
[INFO] [stderr]   Downloaded usbd-hid v0.6.0
[INFO] [stderr]   Downloaded embedded-time v0.12.1
[INFO] [stderr]   Downloaded kiibohd-keyscanning v0.1.0
[INFO] [stderr]   Downloaded kll-core v0.1.2
[INFO] [stderr]   Downloaded kiibohd-hid-io v0.1.0
[INFO] [stderr]   Downloaded usbd-hid-descriptors v0.1.1
[INFO] [stderr]   Downloaded usbd-hid-macros v0.5.2
[INFO] [stderr]   Downloaded pkg-version v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 9b867016c39a9067d3834b78cad45b822d9b07f9b96357133c0e0852386fe63a
[INFO] running `Command { std: "docker" "start" "-a" "9b867016c39a9067d3834b78cad45b822d9b07f9b96357133c0e0852386fe63a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b867016c39a9067d3834b78cad45b822d9b07f9b96357133c0e0852386fe63a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b867016c39a9067d3834b78cad45b822d9b07f9b96357133c0e0852386fe63a", kill_on_drop: false }`
[INFO] [stdout] 9b867016c39a9067d3834b78cad45b822d9b07f9b96357133c0e0852386fe63a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 952345f476b3e72fced9ae28f4e546c47c0434451c83a0ed5fb0ce458093c341
[INFO] running `Command { std: "docker" "start" "-a" "952345f476b3e72fced9ae28f4e546c47c0434451c83a0ed5fb0ce458093c341", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling semver v1.0.9
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling defmt-macros v0.3.2
[INFO] [stderr]    Compiling defmt v0.3.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling defmt-parser v0.3.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling kll-macros v0.1.0
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking c_utf8 v0.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking cstr_core v0.2.5
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking spin v0.9.3
[INFO] [stderr]    Compiling heapless v0.7.13
[INFO] [stderr]    Compiling pkg-version-impl v0.1.1
[INFO] [stderr]     Checking pkg-version v1.0.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking embedded-time v0.12.1
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.2
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]     Checking num_enum v0.5.7
[INFO] [stderr]     Checking kll-hid v0.1.0
[INFO] [stderr]     Checking kiibohd-keyscanning v0.1.0
[INFO] [stderr]     Checking kiibohd-hall-effect v0.1.0
[INFO] [stderr]     Checking kll-core v0.1.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(arbitrary_enum_discriminant)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(const_ptr_read)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(const_slice_from_raw_parts)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(let_chains)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(const_ptr_read)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kll-core-0.1.2/src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(const_slice_from_raw_parts)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kll-core` due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "952345f476b3e72fced9ae28f4e546c47c0434451c83a0ed5fb0ce458093c341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "952345f476b3e72fced9ae28f4e546c47c0434451c83a0ed5fb0ce458093c341", kill_on_drop: false }`
[INFO] [stdout] 952345f476b3e72fced9ae28f4e546c47c0434451c83a0ed5fb0ce458093c341