[INFO] fetching crate canopen 0.1.0...
[INFO] documenting canopen-0.1.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate canopen 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate canopen 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate canopen 0.1.0
[INFO] finished tweaking crates.io crate canopen 0.1.0
[INFO] tweaked toml for crates.io crate canopen 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.2.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.5.2
[INFO] [stderr]   Downloaded lock_api v0.1.5
[INFO] [stderr]   Downloaded encoding_index_tests v0.1.4
[INFO] [stderr]   Downloaded try_from v0.2.2
[INFO] [stderr]   Downloaded scopeguard v0.3.3
[INFO] [stderr]   Downloaded enum-primitive-derive v0.1.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.6.1
[INFO] [stderr]   Downloaded proc-macro2 v0.3.8
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded syn v0.13.11
[INFO] [stderr]   Downloaded encoding-index-japanese v1.20141219.5
[INFO] [stderr]   Downloaded encoding-index-korean v1.20141219.5
[INFO] [stderr]   Downloaded encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]   Downloaded encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]   Downloaded itertools v0.4.19
[INFO] [stderr]   Downloaded encoding v0.2.33
[INFO] [stderr]   Downloaded quote v0.5.2
[INFO] [stderr]   Downloaded derive_more v0.11.0
[INFO] [stderr]   Downloaded hex v0.2.0
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded crossbeam-deque v0.5.2
[INFO] [stderr]   Downloaded encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded socketcan v1.7.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.5.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.2.6
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded crossbeam v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c13322f978fd1a8346a1d79bca5fcf537184836d65e19fe4d9f5596e12e3ca40
[INFO] running `Command { std: "docker" "start" "-a" "c13322f978fd1a8346a1d79bca5fcf537184836d65e19fe4d9f5596e12e3ca40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c13322f978fd1a8346a1d79bca5fcf537184836d65e19fe4d9f5596e12e3ca40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c13322f978fd1a8346a1d79bca5fcf537184836d65e19fe4d9f5596e12e3ca40", kill_on_drop: false }`
[INFO] [stdout] c13322f978fd1a8346a1d79bca5fcf537184836d65e19fe4d9f5596e12e3ca40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39db915c027c156e9aa4f1b3d50d1e65605bb75d89fa650a7032c03a62d9d3b6
[INFO] running `Command { std: "docker" "start" "-a" "39db915c027c156e9aa4f1b3d50d1e65605bb75d89fa650a7032c03a62d9d3b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking socketcan v1.7.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling enum-primitive-derive v0.1.2
[INFO] [stderr]    Compiling derive_more v0.11.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting canopen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_to_from_bytes)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(range_contains)]
[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(try_from)]
[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(try_trait)]
[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(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since `1.42.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(transpose_result)]
[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:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 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 `canopen`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type lib --crate-name canopen src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c78adf9900f0e8b7 -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4d0457ff00ff859b.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-2f4285b54365c8ec.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-a6d414062fc7626d.so --extern encoding=/opt/rustwide/target/debug/deps/libencoding-47f32ba26d110810.rmeta --extern enum_primitive_derive=/opt/rustwide/target/debug/deps/libenum_primitive_derive-94666cb84eff5255.so --extern failure=/opt/rustwide/target/debug/deps/libfailure-3cdd2e421290e7eb.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-293246a3d3422b4f.so --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-302121bec98930b2.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-81eb9eebc802f14d.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-c79266bd33cd080c.rmeta --extern socketcan=/opt/rustwide/target/debug/deps/libsocketcan-904d55059687d644.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "39db915c027c156e9aa4f1b3d50d1e65605bb75d89fa650a7032c03a62d9d3b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39db915c027c156e9aa4f1b3d50d1e65605bb75d89fa650a7032c03a62d9d3b6", kill_on_drop: false }`
[INFO] [stdout] 39db915c027c156e9aa4f1b3d50d1e65605bb75d89fa650a7032c03a62d9d3b6
