[INFO] cloning repository https://github.com/ejmahler/circle_raycaster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ejmahler/circle_raycaster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Fcircle_raycaster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Fcircle_raycaster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae33f9b2062ebac84e1f30cfa54b510d0a9524be
[INFO] documenting ejmahler/circle_raycaster against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejmahler%2Fcircle_raycaster" "/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/ejmahler/circle_raycaster on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ejmahler/circle_raycaster
[INFO] finished tweaking git repo https://github.com/ejmahler/circle_raycaster
[INFO] tweaked toml for git repo https://github.com/ejmahler/circle_raycaster written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ejmahler/circle_raycaster already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded siphasher v0.2.3
[INFO] [stderr]   Downloaded phf_generator v0.7.22
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded quote v0.6.5
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.9
[INFO] [stderr]   Downloaded byteorder v1.2.4
[INFO] [stderr]   Downloaded adler32 v1.0.3
[INFO] [stderr]   Downloaded deflate v0.7.18
[INFO] [stderr]   Downloaded cgmath v0.16.1
[INFO] [stderr]   Downloaded phf v0.7.22
[INFO] [stderr]   Downloaded either v1.5.0
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded gif v0.10.0
[INFO] [stderr]   Downloaded png v0.12.0
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded color_quant v1.0.1
[INFO] [stderr]   Downloaded lazy_static v1.1.0
[INFO] [stderr]   Downloaded rayon-core v1.4.1
[INFO] [stderr]   Downloaded rayon v1.0.2
[INFO] [stderr]   Downloaded num-traits v0.2.5
[INFO] [stderr]   Downloaded palette v0.4.1
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded memoffset v0.2.1
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] [stderr]   Downloaded phf_shared v0.7.22
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.2.2
[INFO] [stderr]   Downloaded crossbeam-deque v0.2.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.15
[INFO] [stderr]   Downloaded num-derive v0.2.2
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded phf_codegen v0.7.22
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded syn v0.14.7
[INFO] [stderr]   Downloaded palette_derive v0.4.1
[INFO] [stderr]   Downloaded inflate v0.4.3
[INFO] [stderr]   Downloaded proc-macro2 v0.4.9
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded image v0.19.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edeee5531dc4de9e014255ffc1b017f1f74bb663322f61d95066a3d0b0e97536
[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" "edeee5531dc4de9e014255ffc1b017f1f74bb663322f61d95066a3d0b0e97536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edeee5531dc4de9e014255ffc1b017f1f74bb663322f61d95066a3d0b0e97536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edeee5531dc4de9e014255ffc1b017f1f74bb663322f61d95066a3d0b0e97536", kill_on_drop: false }`
[INFO] [stdout] edeee5531dc4de9e014255ffc1b017f1f74bb663322f61d95066a3d0b0e97536
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba6b6a4610266e5ae41d9d886e1698883fb2e908c31b086bdb13fff642dbe9b5
[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" "ba6b6a4610266e5ae41d9d886e1698883fb2e908c31b086bdb13fff642dbe9b5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]    Compiling quote v0.6.5
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]  Documenting circle_thing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generators, generator_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `circle_thing`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name circle_thing 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 cgmath=/opt/rustwide/target/debug/deps/libcgmath-038a9b7d2465ebe4.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-783c511be07915f2.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-6d24f0aef66e1579.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-4423497ac1467600.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ba6b6a4610266e5ae41d9d886e1698883fb2e908c31b086bdb13fff642dbe9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba6b6a4610266e5ae41d9d886e1698883fb2e908c31b086bdb13fff642dbe9b5", kill_on_drop: false }`
[INFO] [stdout] ba6b6a4610266e5ae41d9d886e1698883fb2e908c31b086bdb13fff642dbe9b5