[INFO] cloning repository https://github.com/sup34eva/matsuo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sup34eva/matsuo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsup34eva%2Fmatsuo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsup34eva%2Fmatsuo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47fbf0b47212ff55b16a881d4d95c1af9e3aaed9
[INFO] documenting sup34eva/matsuo against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsup34eva%2Fmatsuo" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sup34eva/matsuo on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sup34eva/matsuo
[INFO] finished tweaking git repo https://github.com/sup34eva/matsuo
[INFO] tweaked toml for git repo https://github.com/sup34eva/matsuo written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/sup34eva/matsuo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8271beae404ea4d1be8c9306a7f89f750b38cdda247748fd91cce8562e314ce
[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" "c8271beae404ea4d1be8c9306a7f89f750b38cdda247748fd91cce8562e314ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8271beae404ea4d1be8c9306a7f89f750b38cdda247748fd91cce8562e314ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8271beae404ea4d1be8c9306a7f89f750b38cdda247748fd91cce8562e314ce", kill_on_drop: false }`
[INFO] [stdout] c8271beae404ea4d1be8c9306a7f89f750b38cdda247748fd91cce8562e314ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b136193820534c8908d1fbc70825c4cffcf316d3912949c901da19a19a1a5b67
[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" "b136193820534c8908d1fbc70825c4cffcf316d3912949c901da19a19a1a5b67", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling num-traits v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.0.2
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking deque v0.3.2
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.1.0
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]     Checking shared_library v0.1.5
[INFO] [stderr]    Compiling tempfile v2.1.5
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling wayland-scanner v0.8.7
[INFO] [stderr]    Compiling gl_generator v0.5.3
[INFO] [stderr]     Checking rayon v0.7.1
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling wayland-client v0.8.7
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling glutin v0.8.1
[INFO] [stderr]    Compiling gl v0.6.2
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking docopt v0.8.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.8.7
[INFO] [stderr]     Checking wayland-window v0.5.0
[INFO] [stderr]     Checking wayland-kbd v0.8.0
[INFO] [stderr]     Checking winit v0.6.4
[INFO] [stderr]  Documenting matsuo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns, inclusive_range_syntax)]
[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]   = help: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `matsuo`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name matsuo src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-ca543259203f570a.rmeta --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-6dd4a24648cad1d7.rmeta --extern gl=/opt/rustwide/target/debug/deps/libgl-037a61809cdb336d.rmeta --extern glutin=/opt/rustwide/target/debug/deps/libglutin-865bad38a0e92e98.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-aa7a9b101e90463e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-4a20faefec8a202b.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-843436374fb3cf4e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a7f76e305887e483.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-99fd0971743ab3e1.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b136193820534c8908d1fbc70825c4cffcf316d3912949c901da19a19a1a5b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b136193820534c8908d1fbc70825c4cffcf316d3912949c901da19a19a1a5b67", kill_on_drop: false }`
[INFO] [stdout] b136193820534c8908d1fbc70825c4cffcf316d3912949c901da19a19a1a5b67
