[INFO] cloning repository https://github.com/lights0123/web-libusb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lights0123/web-libusb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flights0123%2Fweb-libusb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flights0123%2Fweb-libusb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ce24c24ef4c6acb6144c1224df72f281693a215
[INFO] documenting lights0123/web-libusb against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flights0123%2Fweb-libusb" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lights0123/web-libusb 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 git repo https://github.com/lights0123/web-libusb
[INFO] finished tweaking git repo https://github.com/lights0123/web-libusb
[INFO] tweaked toml for git repo https://github.com/lights0123/web-libusb written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lights0123/web-libusb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/libc`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded globwalk v0.7.3
[INFO] [stderr]   Downloaded ignore v0.4.17
[INFO] [stderr]   Downloaded rmp-serde v0.14.4
[INFO] [stderr]   Downloaded displaydoc v0.1.7
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.23
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.23
[INFO] [stderr]   Downloaded syn v1.0.68
[INFO] [stderr]   Downloaded rusb v0.6.5
[INFO] [stderr]   Downloaded array_iterator v0.2.4
[INFO] [stderr]   Downloaded serde-wasm-bindgen v0.1.3
[INFO] [stderr]   Downloaded libnspire v0.2.3
[INFO] [stderr]   Downloaded libnspire-sys v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 9156a5ee02b3518c82fd1081c2ee1e56e34ef2f59a1b1d1dd1661104cb5a530a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9156a5ee02b3518c82fd1081c2ee1e56e34ef2f59a1b1d1dd1661104cb5a530a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9156a5ee02b3518c82fd1081c2ee1e56e34ef2f59a1b1d1dd1661104cb5a530a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9156a5ee02b3518c82fd1081c2ee1e56e34ef2f59a1b1d1dd1661104cb5a530a", kill_on_drop: false }`
[INFO] [stdout] 9156a5ee02b3518c82fd1081c2ee1e56e34ef2f59a1b1d1dd1661104cb5a530a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 472de70a0e21a5aa9d8525cc5a23fe9a0b7d4f612501d307c785dc35c9031d22
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "472de70a0e21a5aa9d8525cc5a23fe9a0b7d4f612501d307c785dc35c9031d22", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling libc v0.2.93 (https://github.com/rust-lang/libc?tag=0.2.93#3b185efb)
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling libusb1-sys v0.4.2 (/opt/rustwide/workdir/web-libusb)
[INFO] [stderr]     Checking array_iterator v0.2.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]     Checking rmp v0.8.10
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking libc v0.2.93 (/opt/rustwide/workdir/wasm-libc)
[INFO] [stderr]  Documenting libc v0.2.93 (/opt/rustwide/workdir/wasm-libc)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.73
[INFO] [stderr]    Compiling globwalk v0.7.3
[INFO] [stderr]    Compiling libnspire-sys v0.3.4
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.73
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling displaydoc v0.1.7
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.73
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking rmp-serde v0.14.4
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking wasm-bindgen v0.2.73
[INFO] [stderr]     Checking js-sys v0.3.50
[INFO] [stderr]     Checking web-sys v0.3.50
[INFO] [stderr]     Checking serde-wasm-bindgen v0.1.3
[INFO] [stderr]  Documenting libusb1-sys v0.4.2 (/opt/rustwide/workdir/web-libusb)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> web-libusb/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(c_variadic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> web-libusb/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(c_variadic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `libusb1-sys`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-type rlib --crate-name libusb1_sys web-libusb/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=80f3fa3eea67b275 -L dependency=/opt/rustwide/target/debug/deps --extern js_sys=/opt/rustwide/target/debug/deps/libjs_sys-b27e10315f61f457.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-e0caecec94d9e85f.rmeta --extern rmp_serde=/opt/rustwide/target/debug/deps/librmp_serde-6f21008b2af04633.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-561595c7035d9346.rmeta --extern serde_wasm_bindgen=/opt/rustwide/target/debug/deps/libserde_wasm_bindgen-8535b79ce3639fe1.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-49027c61a703ecf3.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-a9ea669819ed196d.rmeta --extern web_sys=/opt/rustwide/target/debug/deps/libweb_sys-b25e2e1b116d65bb.rmeta --cap-lints=warn --crate-version 0.4.2` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libusb1-sys` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "472de70a0e21a5aa9d8525cc5a23fe9a0b7d4f612501d307c785dc35c9031d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "472de70a0e21a5aa9d8525cc5a23fe9a0b7d4f612501d307c785dc35c9031d22", kill_on_drop: false }`
[INFO] [stdout] 472de70a0e21a5aa9d8525cc5a23fe9a0b7d4f612501d307c785dc35c9031d22