[INFO] fetching crate yagui 0.0.2...
[INFO] checking yagui-0.0.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate yagui 0.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate yagui 0.0.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yagui 0.0.2
[INFO] finished tweaking crates.io crate yagui 0.0.2
[INFO] tweaked toml for crates.io crate yagui 0.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 196 packages
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded conrod_winit v0.71.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 899808252f4cb3d563b06d26de6b801b7a08567880616f8262323c03d80574a5
[INFO] running `Command { std: "docker" "start" "-a" "899808252f4cb3d563b06d26de6b801b7a08567880616f8262323c03d80574a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "899808252f4cb3d563b06d26de6b801b7a08567880616f8262323c03d80574a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "899808252f4cb3d563b06d26de6b801b7a08567880616f8262323c03d80574a5", kill_on_drop: false }`
[INFO] [stdout] 899808252f4cb3d563b06d26de6b801b7a08567880616f8262323c03d80574a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71055a7595cdcb7d537f43096dba06134972a2c2a300f5067f7d27bfc1169f0c
[INFO] running `Command { std: "docker" "start" "-a" "71055a7595cdcb7d537f43096dba06134972a2c2a300f5067f7d27bfc1169f0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling xml-rs v0.8.20
[INFO] [stderr]    Compiling khronos_api v3.1.0
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[INFO] [stderr]    Compiling wayland-sys v0.28.6
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[INFO] [stderr]    Compiling nix v0.14.1
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[INFO] [stderr]     Checking stb_truetype v0.3.1
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[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.8
[INFO] [stderr]     Checking line_drawing v0.7.0
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[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking cty v0.2.2
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[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking memmap2 v0.1.0
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[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling winit v0.23.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking raw-window-handle v0.3.4
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking piston-float v1.0.1
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking piston-viewport v1.0.2
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking pistoncore-input v1.0.1
[INFO] [stderr]    Compiling conrod_derive v0.71.0
[INFO] [stderr]     Checking takeable-option v0.5.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.8
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.6
[INFO] [stderr]    Compiling glium v0.28.0
[INFO] [stderr]     Checking owned_ttf_parser v0.15.2
[INFO] [stderr]     Checking rusttype v0.9.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling xcb v0.10.1
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]     Checking daggy v0.5.0
[INFO] [stderr]     Checking conrod_winit v0.71.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking wayland-commons v0.28.6
[INFO] [stderr]     Checking wayland-cursor v0.28.6
[INFO] [stderr]     Checking wayland-egl v0.28.6
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[INFO] [stderr]     Checking conrod_core v0.71.0
[INFO] [stderr]     Checking glutin v0.25.1
[INFO] [stderr]     Checking conrod_glium v0.71.0
[INFO] [stderr]     Checking yagui v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Context`, `Error`, `bail`
[INFO] [stdout]  --> src/error.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use anyhow::{bail, ensure, Context, Error, Result};
[INFO] [stdout]   |                  ^^^^          ^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Error`, `bail`
[INFO] [stdout]  --> src/error.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use anyhow::{bail, ensure, Context, Error, Result};
[INFO] [stdout]   |                  ^^^^          ^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `button`
[INFO] [stdout]   --> src/gui.rs:34:43
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn add_button(&mut self, ui: &mut Ui, button: &Config) {
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `required_value` is never used
[INFO] [stdout]   --> src/config.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Config {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn required_value(&self, key: &str) -> Result<&Yaml> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fonts` is never read
[INFO] [stdout]  --> src/gui.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Gui {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 8 |     config: Config,
[INFO] [stdout] 9 |     fonts: HashMap<&'static str, FontId>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_button` is never used
[INFO] [stdout]   --> src/gui.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Gui {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn add_button(&mut self, ui: &mut Ui, button: &Config) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `button`
[INFO] [stdout]   --> src/gui.rs:34:43
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn add_button(&mut self, ui: &mut Ui, button: &Config) {
[INFO] [stdout]    |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_button`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `required_value` is never used
[INFO] [stdout]   --> src/config.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Config {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn required_value(&self, key: &str) -> Result<&Yaml> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fonts` is never read
[INFO] [stdout]  --> src/gui.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Gui {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 8 |     config: Config,
[INFO] [stdout] 9 |     fonts: HashMap<&'static str, FontId>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_button` is never used
[INFO] [stdout]   --> src/gui.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Gui {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn add_button(&mut self, ui: &mut Ui, button: &Config) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "71055a7595cdcb7d537f43096dba06134972a2c2a300f5067f7d27bfc1169f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71055a7595cdcb7d537f43096dba06134972a2c2a300f5067f7d27bfc1169f0c", kill_on_drop: false }`
[INFO] [stdout] 71055a7595cdcb7d537f43096dba06134972a2c2a300f5067f7d27bfc1169f0c