[INFO] fetching crate drone-cortex-m-svd 0.7.0...
[INFO] documenting drone-cortex-m-svd-0.7.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate drone-cortex-m-svd 0.7.0 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate drone-cortex-m-svd 0.7.0 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] started tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] finished tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] tweaked toml for crates.io crate drone-cortex-m-svd 0.7.0 written to /workspace/builds/worker-51/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] cf5136fd61dec75b97b1a972f90c1f0906cfbf0d78f3a4bc4ef5d90c4f4a09c5
[INFO] running `Command { std: "docker" "start" "-a" "cf5136fd61dec75b97b1a972f90c1f0906cfbf0d78f3a4bc4ef5d90c4f4a09c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf5136fd61dec75b97b1a972f90c1f0906cfbf0d78f3a4bc4ef5d90c4f4a09c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf5136fd61dec75b97b1a972f90c1f0906cfbf0d78f3a4bc4ef5d90c4f4a09c5", kill_on_drop: false }`
[INFO] [stdout] cf5136fd61dec75b97b1a972f90c1f0906cfbf0d78f3a4bc4ef5d90c4f4a09c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 01e9be5f55017d4bab05f50a80ebe43d97136f21114e7989d9b65a3859c21036
[INFO] running `Command { std: "docker" "start" "-a" "01e9be5f55017d4bab05f50a80ebe43d97136f21114e7989d9b65a3859c21036", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking unicode-xid v0.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking quote v0.3.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking xml-rs v0.3.6
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking synom v0.11.3
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking serde-xml-rs v0.2.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting drone-cortex-m-svd v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/device.rs:274:6
[INFO] [stdout]     |
[INFO] [stdout] 274 |   Ok((map))
[INFO] [stdout]     |      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 274 -   Ok((map))
[INFO] [stdout] 274 +   Ok(map)
[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:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(range_contains)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `drone-cortex-m-svd`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name drone_cortex_m_svd src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ce8aadd97db135de -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-c88cfe258b39ebbc.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-9f002eb2506a4a4d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-495ec9fdc6b7531e.rmeta --extern serde_xml_rs=/opt/rustwide/target/debug/deps/libserde_xml_rs-14c287f7a1985889.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cbe02c8b7676a721.so --extern syn=/opt/rustwide/target/debug/deps/libsyn-136497645588d18b.rmeta --cap-lints=warn --crate-version 0.7.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "01e9be5f55017d4bab05f50a80ebe43d97136f21114e7989d9b65a3859c21036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01e9be5f55017d4bab05f50a80ebe43d97136f21114e7989d9b65a3859c21036", kill_on_drop: false }`
[INFO] [stdout] 01e9be5f55017d4bab05f50a80ebe43d97136f21114e7989d9b65a3859c21036