[INFO] fetching crate embedded-io 0.4.0...
[INFO] documenting embedded-io-0.4.0 against beta-2023-01-01 for beta-1.67-rustdoc-3
[INFO] extracting crate embedded-io 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate embedded-io 0.4.0 on toolchain beta-2023-01-01
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-01-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate embedded-io 0.4.0
[INFO] finished tweaking crates.io crate embedded-io 0.4.0
[INFO] tweaked toml for crates.io crate embedded-io 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-01-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cf824aa7e1328a36373c7d1664ccf7039a6881b469bb0fba4249bba27fc13aa
[INFO] running `Command { std: "docker" "start" "-a" "1cf824aa7e1328a36373c7d1664ccf7039a6881b469bb0fba4249bba27fc13aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cf824aa7e1328a36373c7d1664ccf7039a6881b469bb0fba4249bba27fc13aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf824aa7e1328a36373c7d1664ccf7039a6881b469bb0fba4249bba27fc13aa", kill_on_drop: false }`
[INFO] [stdout] 1cf824aa7e1328a36373c7d1664ccf7039a6881b469bb0fba4249bba27fc13aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-01-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f4a9db096c102d1f021d3eec687ddb54353255f87aedf6271d943d025f51e32
[INFO] running `Command { std: "docker" "start" "-a" "2f4a9db096c102d1f021d3eec687ddb54353255f87aedf6271d943d025f51e32", kill_on_drop: false }`
[INFO] [stderr]  Documenting embedded-io v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `std::io::Read`
[INFO] [stdout]   --> src/blocking.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 | /// Semantics are the same as [`std::io::Read`], check its documentation for details.
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^ no item named `std` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `std::io::BufRead`
[INFO] [stdout]   --> src/blocking.rs:69:33
[INFO] [stdout]    |
[INFO] [stdout] 69 | /// Semantics are the same as [`std::io::BufRead`], check its documentation for details.
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ no item named `std` in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `std::io::Write`
[INFO] [stdout]   --> src/blocking.rs:80:33
[INFO] [stdout]    |
[INFO] [stdout] 80 | /// Semantics are the same as [`std::io::Write`], check its documentation for details.
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ no item named `std` in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `std::io::Seek`
[INFO] [stdout]    --> src/blocking.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 | /// Semantics are the same as [`std::io::Seek`], check its documentation for details.
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^ no item named `std` in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `std::io::SeekFrom`
[INFO] [stdout]   --> src/lib.rs:53:33
[INFO] [stdout]    |
[INFO] [stdout] 53 | /// Semantics are the same as [`std::io::SeekFrom`], check its documentation for details.
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^ no item named `std` in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2f4a9db096c102d1f021d3eec687ddb54353255f87aedf6271d943d025f51e32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f4a9db096c102d1f021d3eec687ddb54353255f87aedf6271d943d025f51e32", kill_on_drop: false }`
[INFO] [stdout] 2f4a9db096c102d1f021d3eec687ddb54353255f87aedf6271d943d025f51e32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-01-01" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "std async defmt futures tokio" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68cb6894da46556d6bf622bb1a708b5d2bccc5ef89ce10df87db29366f83927a
[INFO] running `Command { std: "docker" "start" "-a" "68cb6894da46556d6bf622bb1a708b5d2bccc5ef89ce10df87db29366f83927a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling defmt-macros v0.3.3
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]    Compiling defmt-parser v0.3.1
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling defmt v0.3.2
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking futures v0.3.25
[INFO] [stderr]  Documenting embedded-io v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.01s
[INFO] running `Command { std: "docker" "inspect" "68cb6894da46556d6bf622bb1a708b5d2bccc5ef89ce10df87db29366f83927a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68cb6894da46556d6bf622bb1a708b5d2bccc5ef89ce10df87db29366f83927a", kill_on_drop: false }`
[INFO] [stdout] 68cb6894da46556d6bf622bb1a708b5d2bccc5ef89ce10df87db29366f83927a