[INFO] cloning repository https://github.com/Bietola/rustroids
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bietola/rustroids" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBietola%2Frustroids", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBietola%2Frustroids'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8ef6d1d40d6752bec42fdfe69492903aa21876f
[INFO] documenting Bietola/rustroids against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBietola%2Frustroids" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bietola/rustroids on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bietola/rustroids
[INFO] finished tweaking git repo https://github.com/Bietola/rustroids
[INFO] tweaked toml for git repo https://github.com/Bietola/rustroids written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Bietola/rustroids already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 728797f378b88e8f0f810c2fcd89cd2f247d77a1fa43f2179ae8aafc41a4f633
[INFO] running `Command { std: "docker" "start" "-a" "728797f378b88e8f0f810c2fcd89cd2f247d77a1fa43f2179ae8aafc41a4f633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "728797f378b88e8f0f810c2fcd89cd2f247d77a1fa43f2179ae8aafc41a4f633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728797f378b88e8f0f810c2fcd89cd2f247d77a1fa43f2179ae8aafc41a4f633", kill_on_drop: false }`
[INFO] [stdout] 728797f378b88e8f0f810c2fcd89cd2f247d77a1fa43f2179ae8aafc41a4f633
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3db5ff53196e464e6be5d2ca040dcdd61332bb670ba6a3bcfd160c3ad7d91740
[INFO] running `Command { std: "docker" "start" "-a" "3db5ff53196e464e6be5d2ca040dcdd61332bb670ba6a3bcfd160c3ad7d91740", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling sfml-build v0.2.0
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling csfml-system-sys v0.4.0
[INFO] [stderr]    Compiling csfml-window-sys v0.4.0
[INFO] [stderr]    Compiling csfml-graphics-sys v0.4.0
[INFO] [stderr]    Compiling csfml-audio-sys v0.4.0
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking sfml v0.14.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]     Checking simplelog v0.7.3
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking single v1.0.0
[INFO] [stderr]  Documenting dlfiroids 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)]
[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 `dlfiroids`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name dlfiroids 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 bitflags=/opt/rustwide/target/debug/deps/libbitflags-e792f023038fbc6c.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-88c8d363570d29a2.so --extern log=/opt/rustwide/target/debug/deps/liblog-1b53669f640bf8d7.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-e57f2d5266965a76.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-3806208940f9fc33.rmeta --extern sfml=/opt/rustwide/target/debug/deps/libsfml-9aa50a4186f57990.rmeta --extern simplelog=/opt/rustwide/target/debug/deps/libsimplelog-d96d15c150520f02.rmeta --extern single=/opt/rustwide/target/debug/deps/libsingle-eb6114ab6b38dacc.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3db5ff53196e464e6be5d2ca040dcdd61332bb670ba6a3bcfd160c3ad7d91740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3db5ff53196e464e6be5d2ca040dcdd61332bb670ba6a3bcfd160c3ad7d91740", kill_on_drop: false }`
[INFO] [stdout] 3db5ff53196e464e6be5d2ca040dcdd61332bb670ba6a3bcfd160c3ad7d91740
