[INFO] cloning repository https://github.com/kempchee/piston-snake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kempchee/piston-snake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkempchee%2Fpiston-snake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkempchee%2Fpiston-snake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7530eecc0da59f870d1febdeac50bcf0824c1d7d
[INFO] documenting kempchee/piston-snake 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%2Fkempchee%2Fpiston-snake" "/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/kempchee/piston-snake 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/kempchee/piston-snake
[INFO] finished tweaking git repo https://github.com/kempchee/piston-snake
[INFO] tweaked toml for git repo https://github.com/kempchee/piston-snake written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kempchee/piston-snake 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e532a7a9f20698ca5e9d5868ac040032dabbdd44e15cd4595f015a4c595467f
[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" "0e532a7a9f20698ca5e9d5868ac040032dabbdd44e15cd4595f015a4c595467f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e532a7a9f20698ca5e9d5868ac040032dabbdd44e15cd4595f015a4c595467f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e532a7a9f20698ca5e9d5868ac040032dabbdd44e15cd4595f015a4c595467f", kill_on_drop: false }`
[INFO] [stdout] 0e532a7a9f20698ca5e9d5868ac040032dabbdd44e15cd4595f015a4c595467f
[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" "+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] e7a732310b8194c8cc61375ab9eee5cfe0a338c818112a7f4e40be84b8affd50
[INFO] running `Command { std: "docker" "start" "-a" "e7a732310b8194c8cc61375ab9eee5cfe0a338c818112a7f4e40be84b8affd50", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking piston-graphics_api_version v1.0.0
[INFO] [stderr]     Checking futures-io v0.3.6
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling const_fn v0.4.2
[INFO] [stderr]     Checking weezl v0.1.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking interpolation v0.2.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking conrod v0.62.1
[INFO] [stderr]     Checking libloading v0.6.4
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling standback v0.2.11
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking futures-task v0.3.6
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]     Checking shader_version v0.7.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking mio v0.7.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tokio v0.3.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.9.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking hmac v0.9.0
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking piston2d-graphics v0.37.0
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking postgres-protocol v0.5.3
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking postgres-types v0.1.3
[INFO] [stderr]     Checking tokio-util v0.4.0
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.10
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.74.0
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking pistoncore-input v1.0.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]     Checking tokio-postgres v0.6.0
[INFO] [stderr]     Checking pistoncore-window v0.47.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.52.0
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking piston v0.52.0
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking postgres v0.18.1
[INFO] [stderr]     Checking pistoncore-glutin_window v0.67.0
[INFO] [stderr]  Documenting first_piston v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `piston::event`
[INFO] [stdout]   --> src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 | use piston::event::*;
[INFO] [stdout]    |             ^^^^^ could not find `event` in `piston`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `rand::distributions::IndependentSample`, `rand::distributions::Range`
[INFO] [stdout]   --> src/main.rs:15:27
[INFO] [stdout]    |
[INFO] [stdout] 15 | use rand::distributions::{IndependentSample, Range};
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^  ^^^^^ no `Range` in `distributions`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           no `IndependentSample` in `distributions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `conrod::Background`, `conrod::Button`, `conrod::CanvasId`, `conrod::DropDownList`, `conrod::Floating`, `conrod::Label`, `conrod::Labelable`, `conrod::Positionable`, `conrod::Sizeable`, `conrod::Theme`, `conrod::Ui`, `conrod::UiId`, `conrod::Widget`, `conrod::WidgetId`, `conrod::Split`
[INFO] [stdout]   --> src/main.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...::{Background, Button,CanvasId,DropDownList, Floating, Label, Labelable,Positionable, Sizeable, Theme, Ui,UiId, Widget,WidgetId,Split};
[INFO] [stdout]    |       ^^^^^^^^^^  ^^^^^^ ^^^^^^^^ ^^^^^^^^^^^^  ^^^^^^^^  ^^^^^  ^^^^^^^^^ ^^^^^^^^^^^^  ^^^^^^^^  ^^^^^  ^^ ^^^^  ^^^^^^ ^^^^^^^^ ^^^^^
[INFO] [stdout]    |       |           |      |        |             |         |      |         |             |         |
[INFO] [stdout]    |       |           |      |        |             |         |      |         |             |         no `Theme` in the root
[INFO] [stdout]    |       |           |      |        |             |         |      |         |             no `Sizeable` in the root
[INFO] [stdout]    |       |           |      |        |             |         |      |         no `Positionable` in the root
[INFO] [stdout]    |       |           |      |        |             |         |      no `Labelable` in the root
[INFO] [stdout]    |       |           |      |        |             |         no `Label` in the root
[INFO] [stdout]    |       |           |      |        |             no `Floating` in the root
[INFO] [stdout]    |       |           |      |        no `DropDownList` in the root
[INFO] [stdout]    |       |           |      no `CanvasId` in the root
[INFO] [stdout]    |       |           no `Button` in the root
[INFO] [stdout]    |       no `Background` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `conrod::color`
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | use conrod::color::*;
[INFO] [stdout]    |             ^^^^^ could not find `color` in `conrod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `postgres::Connection`, `postgres::SslMode`
[INFO] [stdout]   --> src/main.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use postgres::{Connection, SslMode};
[INFO] [stdout]    |                ^^^^^^^^^^  ^^^^^^^ no `SslMode` in the root
[INFO] [stdout]    |                |
[INFO] [stdout]    |                no `Connection` in the root
[INFO] [stdout]    |                help: a similar name exists in the module (notice the capitalization): `connection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout]    --> src/main.rs:106:80
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn render(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>) {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^ could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout]    --> src/main.rs:116:93
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn render_start_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                                                                             ^^^^^^^^^^^ could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout]    --> src/main.rs:168:97
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn render_game_over_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                                                                                 ^^^^^^^^^^^ could not find `glyph_cache` in `opengl_graphics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Tm` in crate `time`
[INFO] [stdout]   --> src/main.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     last_auto_move_time:time::Tm,
[INFO] [stdout]    |                               ^^ not found in `time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RenderArgs` in this scope
[INFO] [stdout]   --> src/main.rs:79:38
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn render_game(&mut self, args: &RenderArgs){
[INFO] [stdout]    |                                      ^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 10 | use piston::RenderArgs;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RenderArgs` in this scope
[INFO] [stdout]    --> src/main.rs:106:33
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn render(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>) {
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 10  | use piston::RenderArgs;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Ui` in crate `conrod`
[INFO] [stdout]    --> src/main.rs:106:60
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn render(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>) {
[INFO] [stdout]     |                                                            ^^ not found in `conrod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RenderArgs` in this scope
[INFO] [stdout]    --> src/main.rs:116:46
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn render_start_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                              ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 10  | use piston::RenderArgs;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Ui` in crate `conrod`
[INFO] [stdout]    --> src/main.rs:116:73
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn render_start_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                                                         ^^ not found in `conrod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RenderArgs` in this scope
[INFO] [stdout]    --> src/main.rs:168:50
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn render_game_over_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                                  ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 10  | use piston::RenderArgs;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Ui` in crate `conrod`
[INFO] [stdout]    --> src/main.rs:168:77
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn render_game_over_screen(&mut self, args: &RenderArgs,ui:&mut conrod::Ui<opengl_graphics::glyph_cache::GlyphCache>){
[INFO] [stdout]     |                                                                             ^^ not found in `conrod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RenderArgs` in this scope
[INFO] [stdout]    --> src/main.rs:257:30
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn game_over(&mut self,r:RenderArgs)->bool{
[INFO] [stdout]     |                              ^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 10  | use piston::RenderArgs;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `first_piston`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name first_piston 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 conrod=/opt/rustwide/target/debug/deps/libconrod-c2147b99d39939df.rmeta --extern piston=/opt/rustwide/target/debug/deps/libpiston-3fb19c8ecec9b933.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-a7b286c81b40e74b.rmeta --extern opengl_graphics=/opt/rustwide/target/debug/deps/libopengl_graphics-55d6cdb229ad19e2.rmeta --extern glutin_window=/opt/rustwide/target/debug/deps/libglutin_window-a09fb83bdad85e25.rmeta --extern input=/opt/rustwide/target/debug/deps/libinput-47c98c0394e49e8d.rmeta --extern postgres=/opt/rustwide/target/debug/deps/libpostgres-0ff24e8a562c583f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c85954dc41156076.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-0440cbe1645485bb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e7a732310b8194c8cc61375ab9eee5cfe0a338c818112a7f4e40be84b8affd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a732310b8194c8cc61375ab9eee5cfe0a338c818112a7f4e40be84b8affd50", kill_on_drop: false }`
[INFO] [stdout] e7a732310b8194c8cc61375ab9eee5cfe0a338c818112a7f4e40be84b8affd50
