[INFO] fetching crate blue_hal 1.0.0...
[INFO] documenting blue_hal-1.0.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate blue_hal 1.0.0 into /workspace/builds/worker-119/source
[INFO] validating manifest of crates.io crate blue_hal 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-119/source/.cargo/config
[INFO] started tweaking crates.io crate blue_hal 1.0.0
[INFO] finished tweaking crates.io crate blue_hal 1.0.0
[INFO] tweaked toml for crates.io crate blue_hal 1.0.0 written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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 marker-blanket v0.1.0
[INFO] [stderr]   Downloaded defmt-rtt v0.2.0
[INFO] [stderr]   Downloaded efm32gg11b v0.1.0
[INFO] [stderr]   Downloaded stm32f4 v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f29f051fe2a4c87d3d83e0d96793039f71ef8adba84133c284af6cf562a89549
[INFO] running `Command { std: "docker" "start" "-a" "f29f051fe2a4c87d3d83e0d96793039f71ef8adba84133c284af6cf562a89549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f29f051fe2a4c87d3d83e0d96793039f71ef8adba84133c284af6cf562a89549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f29f051fe2a4c87d3d83e0d96793039f71ef8adba84133c284af6cf562a89549", kill_on_drop: false }`
[INFO] [stdout] f29f051fe2a4c87d3d83e0d96793039f71ef8adba84133c284af6cf562a89549
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab141476478c6f2634f8a07508ca589098956fe6cb7a55645ffee893d4f19307
[INFO] running `Command { std: "docker" "start" "-a" "ab141476478c6f2634f8a07508ca589098956fe6cb7a55645ffee893d4f19307", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.3
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling defmt-parser v0.2.2
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling defmt v0.2.3
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]    Compiling defmt-macros v0.2.3
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.6.15
[INFO] [stderr]    Compiling marker-blanket v0.1.0
[INFO] [stderr]     Checking ufmt v0.1.0
[INFO] [stderr]     Checking defmt-rtt v0.2.0
[INFO] [stderr]  Documenting blue_hal v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(associated_type_bounds)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(bool_to_option)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 document `blue_hal`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name blue_hal src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="defmt-default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bytemuck=/opt/rustwide/target/debug/deps/libbytemuck-201c4a1ef21abd93.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-77d0b43bf901c6ea.rmeta --extern cortex_m_rt=/opt/rustwide/target/debug/deps/libcortex_m_rt-4a0cfc7463a83b87.rmeta --extern cortex_m_semihosting=/opt/rustwide/target/debug/deps/libcortex_m_semihosting-9af6c0d24b200af1.rmeta --extern crc=/opt/rustwide/target/debug/deps/libcrc-1802b4cddb2c6711.rmeta --extern defmt=/opt/rustwide/target/debug/deps/libdefmt-5f4c1f132f146214.rmeta --extern defmt_rtt=/opt/rustwide/target/debug/deps/libdefmt_rtt-4fe442233b689514.rmeta --extern marker_blanket=/opt/rustwide/target/debug/deps/libmarker_blanket-fb22446c78c0a45d.so --extern nb=/opt/rustwide/target/debug/deps/libnb-21181d19c5b8ec3a.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-02dd244e5b81ad71.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-8914b2f82a91ef70.so --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-cf754c2811a8229f.rmeta --extern ufmt=/opt/rustwide/target/debug/deps/libufmt-4a67504fe22c6a99.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ab141476478c6f2634f8a07508ca589098956fe6cb7a55645ffee893d4f19307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab141476478c6f2634f8a07508ca589098956fe6cb7a55645ffee893d4f19307", kill_on_drop: false }`
[INFO] [stdout] ab141476478c6f2634f8a07508ca589098956fe6cb7a55645ffee893d4f19307
