[INFO] fetching crate cortex-m-quickstart 0.3.4...
[INFO] documenting cortex-m-quickstart-0.3.4 against try#6ee483316d2e4581572121d60a955affb2032eb3+cargoflags=-Zrustdoc-scrape-examples for scrape-examples
[INFO] extracting crate cortex-m-quickstart 0.3.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cortex-m-quickstart 0.3.4 on toolchain 6ee483316d2e4581572121d60a955affb2032eb3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking crates.io crate cortex-m-quickstart 0.3.4
[INFO] finished tweaking crates.io crate cortex-m-quickstart 0.3.4
[INFO] tweaked toml for crates.io crate cortex-m-quickstart 0.3.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "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" "+6ee483316d2e4581572121d60a955affb2032eb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5bb394fc8b37a750c447c28ec20cab9beaef47d7d1cfc00895359c70ecb8da0
[INFO] running `Command { std: "docker" "start" "-a" "b5bb394fc8b37a750c447c28ec20cab9beaef47d7d1cfc00895359c70ecb8da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5bb394fc8b37a750c447c28ec20cab9beaef47d7d1cfc00895359c70ecb8da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5bb394fc8b37a750c447c28ec20cab9beaef47d7d1cfc00895359c70ecb8da0", kill_on_drop: false }`
[INFO] [stdout] b5bb394fc8b37a750c447c28ec20cab9beaef47d7d1cfc00895359c70ecb8da0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] ff6ae866ea4932879050125eaabae5e6ffd9cecae1657cd2e67ab06da2a3f70d
[INFO] running `Command { std: "docker" "start" "-a" "ff6ae866ea4932879050125eaabae5e6ffd9cecae1657cd2e67ab06da2a3f70d", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling cortex-m v0.7.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling cortex-m v0.5.11
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]     Checking panic-semihosting v0.3.0
[INFO] [stderr] warning: failed to check lib in package `panic-semihosting` as a prerequisite for scraping examples from: example "allocator", example "crash", example "device", example "exception", example "hello", example "itm", example "minimal", example "panic", lib
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/Cargo.toml
[INFO] [stderr] warning: `panic-semihosting` (lib) generated 1 warning
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.6.15
[INFO] [stderr]     Checking cortex-m-rt v0.5.7
[INFO] [stderr]     Scraping cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: failed to scan example "allocator" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "allocator") generated 1 warning
[INFO] [stderr] warning: failed to scan example "device" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "device") generated 1 warning
[INFO] [stderr] warning: failed to scan example "itm" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "itm") generated 1 warning
[INFO] [stderr] warning: failed to scan example "hello" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "hello") generated 1 warning
[INFO] [stderr] warning: failed to scan example "exception" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "exception") generated 1 warning
[INFO] [stderr] warning: failed to scan example "crash" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "crash") generated 1 warning
[INFO] [stderr] warning: failed to scan example "panic" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "panic") generated 1 warning
[INFO] [stderr] warning: failed to scan example "minimal" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "minimal") generated 1 warning
[INFO] [stderr]  Documenting cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Optional`
[INFO] [stdout]  --> src/lib.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | //! - [Optional] Cargo `add` subcommand: `cargo install cargo-edit`
[INFO] [stdout]   |        ^^^^^^^^ no item named `Optional` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]   = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.47s
[INFO] running `Command { std: "docker" "inspect" "ff6ae866ea4932879050125eaabae5e6ffd9cecae1657cd2e67ab06da2a3f70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff6ae866ea4932879050125eaabae5e6ffd9cecae1657cd2e67ab06da2a3f70d", kill_on_drop: false }`
[INFO] [stdout] ff6ae866ea4932879050125eaabae5e6ffd9cecae1657cd2e67ab06da2a3f70d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] 962144ac04e4fcf1caceacc105dd8a9f60912d3307ac61403fe96281b738b4e8
[INFO] running `Command { std: "docker" "start" "-a" "962144ac04e4fcf1caceacc105dd8a9f60912d3307ac61403fe96281b738b4e8", kill_on_drop: false }`
[INFO] [stderr]     Checking panic-semihosting v0.3.0
[INFO] [stderr] warning: failed to check lib in package `panic-semihosting` as a prerequisite for scraping examples from: example "allocator", example "crash", example "device", example "exception", example "hello", example "itm", example "minimal", example "panic", lib
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/Cargo.toml
[INFO] [stderr] warning: `panic-semihosting` (lib) generated 1 warning
[INFO] [stderr]     Checking cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Scraping cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: failed to scan example "crash" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "crash") generated 1 warning
[INFO] [stderr] warning: failed to scan example "minimal" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "minimal") generated 1 warning
[INFO] [stderr] warning: failed to scan example "itm" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "itm") generated 1 warning
[INFO] [stderr] warning: failed to scan example "exception" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "exception") generated 1 warning
[INFO] [stderr] warning: failed to scan example "allocator" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "allocator") generated 1 warning
[INFO] [stderr] warning: failed to scan example "device" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "device") generated 1 warning
[INFO] [stderr] warning: failed to scan example "panic" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "panic") generated 1 warning
[INFO] [stderr] warning: failed to scan example "hello" in package `cortex-m-quickstart` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `cortex-m-quickstart` (example "hello") generated 1 warning
[INFO] [stderr]  Documenting cortex-m-quickstart v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Optional`
[INFO] [stdout]  --> src/lib.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | //! - [Optional] Cargo `add` subcommand: `cargo install cargo-edit`
[INFO] [stdout]   |        ^^^^^^^^ no item named `Optional` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]   = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "962144ac04e4fcf1caceacc105dd8a9f60912d3307ac61403fe96281b738b4e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "962144ac04e4fcf1caceacc105dd8a9f60912d3307ac61403fe96281b738b4e8", kill_on_drop: false }`
[INFO] [stdout] 962144ac04e4fcf1caceacc105dd8a9f60912d3307ac61403fe96281b738b4e8