[INFO] fetching crate rtt-target 0.3.1...
[INFO] documenting rtt-target-0.3.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate rtt-target 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rtt-target 0.3.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtt-target 0.3.1
[INFO] finished tweaking crates.io crate rtt-target 0.3.1
[INFO] tweaked toml for crates.io crate rtt-target 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69043c1d58eb94a30b1fe7c0513205a2f677e4542b2565eb7e85e92531db2129
[INFO] running `Command { std: "docker" "start" "-a" "69043c1d58eb94a30b1fe7c0513205a2f677e4542b2565eb7e85e92531db2129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69043c1d58eb94a30b1fe7c0513205a2f677e4542b2565eb7e85e92531db2129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69043c1d58eb94a30b1fe7c0513205a2f677e4542b2565eb7e85e92531db2129", kill_on_drop: false }`
[INFO] [stdout] 69043c1d58eb94a30b1fe7c0513205a2f677e4542b2565eb7e85e92531db2129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 854a354a4e5f7c714cdd76bde154ad0202164f12dbf4ca238cc2520a7559670c
[INFO] running `Command { std: "docker" "start" "-a" "854a354a4e5f7c714cdd76bde154ad0202164f12dbf4ca238cc2520a7559670c", kill_on_drop: false }`
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]  Documenting rtt-target v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `set_print_channel`
[INFO] [stdout]   --> src/print.rs:17:73
[INFO] [stdout]    |
[INFO] [stdout] 17 | /// to synchronize printing. You should only use this function if the [`set_print_channel`] function
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^ no item named `set_print_channel` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `set_print_channel`
[INFO] [stdout]    --> src/print.rs:123:77
[INFO] [stdout]     |
[INFO] [stdout] 123 | /// Before use the print channel has to be set with [`rtt_init_print`] or [`set_print_channel`]. If
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^^ no item named `set_print_channel` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `set_print_channel`
[INFO] [stdout]    --> src/print.rs:147:77
[INFO] [stdout]     |
[INFO] [stdout] 147 | /// Before use the print channel has to be set with [`rtt_init_print`] or [`set_print_channel`]. If
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^^ no item named `set_print_channel` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "854a354a4e5f7c714cdd76bde154ad0202164f12dbf4ca238cc2520a7559670c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "854a354a4e5f7c714cdd76bde154ad0202164f12dbf4ca238cc2520a7559670c", kill_on_drop: false }`
[INFO] [stdout] 854a354a4e5f7c714cdd76bde154ad0202164f12dbf4ca238cc2520a7559670c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "cortex-m" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 12463dc40f5ccf02f79a7a258140e920cdf5d0579fab61c5e66d533dc884ee6d
[INFO] running `Command { std: "docker" "start" "-a" "12463dc40f5ccf02f79a7a258140e920cdf5d0579fab61c5e66d533dc884ee6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m v0.7.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]  Documenting rtt-target v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "12463dc40f5ccf02f79a7a258140e920cdf5d0579fab61c5e66d533dc884ee6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12463dc40f5ccf02f79a7a258140e920cdf5d0579fab61c5e66d533dc884ee6d", kill_on_drop: false }`
[INFO] [stdout] 12463dc40f5ccf02f79a7a258140e920cdf5d0579fab61c5e66d533dc884ee6d