[INFO] cloning repository https://github.com/laure-barbe/deepnano-blitz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laure-barbe/deepnano-blitz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaure-barbe%2Fdeepnano-blitz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaure-barbe%2Fdeepnano-blitz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15bd04b94c291debac75823811a2c86820dda589
[INFO] documenting laure-barbe/deepnano-blitz 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%2Flaure-barbe%2Fdeepnano-blitz" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/laure-barbe/deepnano-blitz 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/laure-barbe/deepnano-blitz
[INFO] finished tweaking git repo https://github.com/laure-barbe/deepnano-blitz
[INFO] tweaked toml for git repo https://github.com/laure-barbe/deepnano-blitz written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate git repo https://github.com/laure-barbe/deepnano-blitz 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc v1.0.3
[INFO] [stderr]   Downloaded smallvec v1.6.0
[INFO] [stderr]   Downloaded index-fixed v0.0.2
[INFO] [stderr]   Downloaded fastapprox v0.3.0
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.13.0
[INFO] [stderr]   Downloaded pyo3-macros v0.13.0
[INFO] [stderr]   Downloaded paste v1.0.4
[INFO] [stderr]   Downloaded numpy v0.13.0
[INFO] [stderr]   Downloaded pyo3 v0.13.0
[INFO] [stderr]   Downloaded kth v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] 2c3d9cdf54007e94d258b19e5cd90466d3cf15d148d7ec3cbcadfe44378fae46
[INFO] running `Command { std: "docker" "start" "-a" "2c3d9cdf54007e94d258b19e5cd90466d3cf15d148d7ec3cbcadfe44378fae46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c3d9cdf54007e94d258b19e5cd90466d3cf15d148d7ec3cbcadfe44378fae46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3d9cdf54007e94d258b19e5cd90466d3cf15d148d7ec3cbcadfe44378fae46", kill_on_drop: false }`
[INFO] [stdout] 2c3d9cdf54007e94d258b19e5cd90466d3cf15d148d7ec3cbcadfe44378fae46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] ef834367181b46d3b5d68283acf9738467f0c980e941841fdad7cf39b7f4dbb9
[INFO] running `Command { std: "docker" "start" "-a" "ef834367181b46d3b5d68283acf9738467f0c980e941841fdad7cf39b7f4dbb9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking smallvec v1.6.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling pyo3 v0.13.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]     Checking blas-src v0.6.1
[INFO] [stderr]     Checking index-fixed v0.0.2
[INFO] [stderr]    Compiling deepnano2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking fastapprox v0.3.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling kth v0.1.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking cblas-sys v0.1.4
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.13.0
[INFO] [stderr]    Compiling ctor v0.1.12
[INFO] [stderr]    Compiling inventory-impl v0.1.5
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling pyo3-macros v0.13.0
[INFO] [stderr]     Checking inventory v0.1.5
[INFO] [stderr]     Checking numpy v0.13.0
[INFO] [stderr]  Documenting deepnano2 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(static_nobundle)]
[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 `deepnano2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-name deepnano2 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d3b16c4b0b099a82 -L dependency=/opt/rustwide/target/debug/deps --extern fastapprox=/opt/rustwide/target/debug/deps/libfastapprox-8cd512a77ac56053.rmeta --extern kth=/opt/rustwide/target/debug/deps/libkth-836ee05e9fcd4420.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-81e91d490a4ff1aa.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-72eee744591ddecc.rmeta --extern numpy=/opt/rustwide/target/debug/deps/libnumpy-9491eede2aeb8f6b.rmeta --extern pyo3=/opt/rustwide/target/debug/deps/libpyo3-2ef3295e93d4bca6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ef834367181b46d3b5d68283acf9738467f0c980e941841fdad7cf39b7f4dbb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef834367181b46d3b5d68283acf9738467f0c980e941841fdad7cf39b7f4dbb9", kill_on_drop: false }`
[INFO] [stdout] ef834367181b46d3b5d68283acf9738467f0c980e941841fdad7cf39b7f4dbb9