Dec 17 19:06:28.782 INFO checking mwalczyk/spectrum_learn_rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:06:28.782 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/mwalczyk/spectrum_learn_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:06:28.984 INFO [stdout] 0647c6f233d3154b9b6bbd3d91604ecc28f8abe0b02a82d580f3e0c81fab7f86
Dec 17 19:06:28.989 INFO running `"docker" "start" "-a" "0647c6f233d3154b9b6bbd3d91604ecc28f8abe0b02a82d580f3e0c81fab7f86"`
Dec 17 19:06:29.807 INFO [stderr]    Compiling serde v0.9.12
Dec 17 19:06:29.811 INFO [stderr]     Checking shared_library v0.1.5
Dec 17 19:06:29.811 INFO [stderr]    Compiling phf_generator v0.7.21
Dec 17 19:06:29.811 INFO [stderr]     Checking x11-dl v2.12.0
Dec 17 19:06:29.811 INFO [stderr]     Checking fs2 v0.2.5
Dec 17 19:06:29.818 INFO [stderr]     Checking tempfile v2.1.5
Dec 17 19:06:30.376 INFO [stderr]     Checking memmap v0.4.0
Dec 17 19:06:30.440 INFO [stderr]     Checking osmesa-sys v0.1.2
Dec 17 19:06:30.576 INFO [stderr]    Compiling phf_codegen v0.7.21
Dec 17 19:06:31.120 INFO [stderr]    Compiling target_build_utils v0.3.0
Dec 17 19:06:45.236 INFO [stderr]    Compiling serde_json v0.9.9
Dec 17 19:06:51.456 INFO [stderr]    Compiling libloading v0.3.4
Dec 17 19:06:53.200 INFO [stderr]     Checking dlib v0.3.1
Dec 17 19:06:53.420 INFO [stderr]     Checking wayland-sys v0.7.8
Dec 17 19:06:53.908 INFO [stderr]     Checking wayland-client v0.7.8
Dec 17 19:06:55.321 INFO [stderr]     Checking wayland-window v0.4.4
Dec 17 19:06:55.323 INFO [stderr]     Checking wayland-kbd v0.6.3
Dec 17 19:06:56.696 INFO [stderr]     Checking winit v0.5.11
Dec 17 19:06:57.928 INFO [stderr]     Checking glutin v0.7.4
Dec 17 19:06:59.284 INFO [stderr]     Checking spectrum_learn_rs v0.1.0 (/opt/crater/workdir)
Dec 17 19:06:59.784 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 17 19:06:59.784 INFO [stderr]  --> src/program.rs:3:17
Dec 17 19:06:59.784 INFO [stderr]   |
Dec 17 19:06:59.784 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 17 19:06:59.784 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 17 19:06:59.784 INFO [stderr]   |
Dec 17 19:06:59.784 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:06:59.784 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:06:59.785 INFO [stderr]  --> src/program.rs:4:5
Dec 17 19:06:59.785 INFO [stderr]   |
Dec 17 19:06:59.785 INFO [stderr] 4 | use std::mem;
Dec 17 19:06:59.785 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: unused import: `std::error::Error`
Dec 17 19:06:59.785 INFO [stderr]  --> src/program.rs:9:5
Dec 17 19:06:59.785 INFO [stderr]   |
Dec 17 19:06:59.785 INFO [stderr] 9 | use std::error::Error;
Dec 17 19:06:59.785 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 17 19:06:59.785 INFO [stderr]   --> src/main.rs:11:26
Dec 17 19:06:59.785 INFO [stderr]    |
Dec 17 19:06:59.785 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 17 19:06:59.785 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.785 INFO [stderr]   --> src/main.rs:49:5
Dec 17 19:06:59.785 INFO [stderr]    |
Dec 17 19:06:59.785 INFO [stderr] 49 |     /// Setup the window
Dec 17 19:06:59.785 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr]    |
Dec 17 19:06:59.785 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.785 INFO [stderr]   --> src/main.rs:80:9
Dec 17 19:06:59.785 INFO [stderr]    |
Dec 17 19:06:59.785 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 17 19:06:59.785 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.785 INFO [stderr]   --> src/main.rs:98:9
Dec 17 19:06:59.785 INFO [stderr]    |
Dec 17 19:06:59.785 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 17 19:06:59.785 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.785 INFO [stderr]    --> src/main.rs:116:9
Dec 17 19:06:59.785 INFO [stderr]     |
Dec 17 19:06:59.785 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 17 19:06:59.785 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 17 19:06:59.785 INFO [stderr]  --> src/program.rs:3:17
Dec 17 19:06:59.785 INFO [stderr]   |
Dec 17 19:06:59.785 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 17 19:06:59.785 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 17 19:06:59.785 INFO [stderr]   |
Dec 17 19:06:59.785 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:06:59.785 INFO [stderr] 
Dec 17 19:06:59.785 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:06:59.785 INFO [stderr]  --> src/program.rs:4:5
Dec 17 19:06:59.785 INFO [stderr]   |
Dec 17 19:06:59.796 INFO [stderr] 4 | use std::mem;
Dec 17 19:06:59.796 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:06:59.796 INFO [stderr] 
Dec 17 19:06:59.796 INFO [stderr] warning: unused import: `std::error::Error`
Dec 17 19:06:59.796 INFO [stderr]  --> src/program.rs:9:5
Dec 17 19:06:59.796 INFO [stderr]   |
Dec 17 19:06:59.796 INFO [stderr] 9 | use std::error::Error;
Dec 17 19:06:59.796 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.796 INFO [stderr] 
Dec 17 19:06:59.796 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 17 19:06:59.796 INFO [stderr]   --> src/main.rs:11:26
Dec 17 19:06:59.796 INFO [stderr]    |
Dec 17 19:06:59.796 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 17 19:06:59.796 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 17 19:06:59.796 INFO [stderr] 
Dec 17 19:06:59.796 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.797 INFO [stderr]   --> src/main.rs:49:5
Dec 17 19:06:59.797 INFO [stderr]    |
Dec 17 19:06:59.797 INFO [stderr] 49 |     /// Setup the window
Dec 17 19:06:59.797 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.797 INFO [stderr]    |
Dec 17 19:06:59.797 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 17 19:06:59.797 INFO [stderr] 
Dec 17 19:06:59.797 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.797 INFO [stderr]   --> src/main.rs:80:9
Dec 17 19:06:59.797 INFO [stderr]    |
Dec 17 19:06:59.797 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 17 19:06:59.797 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.797 INFO [stderr] 
Dec 17 19:06:59.797 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.797 INFO [stderr]   --> src/main.rs:98:9
Dec 17 19:06:59.797 INFO [stderr]    |
Dec 17 19:06:59.797 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 17 19:06:59.797 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.797 INFO [stderr] 
Dec 17 19:06:59.797 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 19:06:59.797 INFO [stderr]    --> src/main.rs:116:9
Dec 17 19:06:59.797 INFO [stderr]     |
Dec 17 19:06:59.797 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 17 19:06:59.797 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.797 INFO [stderr] 
Dec 17 19:06:59.940 INFO [stderr] warning: unused variable: `window_size`
Dec 17 19:06:59.940 INFO [stderr]   --> src/main.rs:53:9
Dec 17 19:06:59.940 INFO [stderr]    |
Dec 17 19:06:59.940 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 17 19:06:59.940 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 17 19:06:59.940 INFO [stderr]    |
Dec 17 19:06:59.940 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 19:06:59.940 INFO [stderr] 
Dec 17 19:06:59.940 INFO [stderr] warning: unused variable: `shader_program`
Dec 17 19:06:59.940 INFO [stderr]   --> src/main.rs:67:13
Dec 17 19:06:59.940 INFO [stderr]    |
Dec 17 19:06:59.940 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 17 19:06:59.940 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 17 19:06:59.940 INFO [stderr] 
Dec 17 19:06:59.952 INFO [stderr] warning: unused variable: `window_size`
Dec 17 19:06:59.952 INFO [stderr]   --> src/main.rs:53:9
Dec 17 19:06:59.952 INFO [stderr]    |
Dec 17 19:06:59.952 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 17 19:06:59.952 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 17 19:06:59.952 INFO [stderr]    |
Dec 17 19:06:59.952 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 19:06:59.953 INFO [stderr] 
Dec 17 19:06:59.953 INFO [stderr] warning: unused variable: `shader_program`
Dec 17 19:06:59.953 INFO [stderr]   --> src/main.rs:67:13
Dec 17 19:06:59.953 INFO [stderr]    |
Dec 17 19:06:59.953 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 17 19:06:59.953 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 17 19:06:59.953 INFO [stderr] 
Dec 17 19:06:59.971 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:06:59.971 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:06:59.971 INFO [stderr]   --> src/main.rs:67:9
Dec 17 19:06:59.971 INFO [stderr]    |
Dec 17 19:06:59.971 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 17 19:06:59.971 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 17 19:06:59.971 INFO [stderr]    |         |
Dec 17 19:06:59.971 INFO [stderr]    |         help: remove this `mut`
Dec 17 19:06:59.971 INFO [stderr]   --> src/main.rs:67:9
Dec 17 19:06:59.971 INFO [stderr]    |
Dec 17 19:06:59.971 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 17 19:06:59.971 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 17 19:06:59.971 INFO [stderr]    |         |
Dec 17 19:06:59.971 INFO [stderr]    |         help: remove this `mut`
Dec 17 19:06:59.971 INFO [stderr]    |
Dec 17 19:06:59.971 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 19:06:59.971 INFO [stderr] 
Dec 17 19:06:59.971 INFO [stderr]    |
Dec 17 19:06:59.971 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 19:06:59.971 INFO [stderr] 
Dec 17 19:06:59.976 INFO [stderr] warning: struct is never constructed: `Line`
Dec 17 19:06:59.976 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 17 19:06:59.976 INFO [stderr]   |
Dec 17 19:06:59.976 INFO [stderr] 1 | pub struct Line {
Dec 17 19:06:59.976 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 17 19:06:59.976 INFO [stderr]   |
Dec 17 19:06:59.976 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 19:06:59.976 INFO [stderr] 
Dec 17 19:06:59.976 INFO [stderr] warning: struct is never constructed: `Point`
Dec 17 19:06:59.976 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 17 19:06:59.976 INFO [stderr]   |
Dec 17 19:06:59.976 INFO [stderr] 6 | pub struct Point {
Dec 17 19:06:59.976 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 17 19:06:59.976 INFO [stderr] 
Dec 17 19:06:59.976 INFO [stderr] warning: method is never used: `learning_rate`
Dec 17 19:06:59.976 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 17 19:06:59.976 INFO [stderr]    |
Dec 17 19:06:59.976 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 17 19:06:59.976 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.976 INFO [stderr] 
Dec 17 19:06:59.976 INFO [stderr] warning: method is never used: `unbind`
Dec 17 19:06:59.976 INFO [stderr]    --> src/program.rs:100:5
Dec 17 19:06:59.977 INFO [stderr]     |
Dec 17 19:06:59.977 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 17 19:06:59.977 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:06:59.977 INFO [stderr] 
Dec 17 19:07:00.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:00.004 INFO [stderr]   --> src/main.rs:70:9
Dec 17 19:07:00.004 INFO [stderr]    |
Dec 17 19:07:00.004 INFO [stderr] 70 |         window.make_current();
Dec 17 19:07:00.004 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.004 INFO [stderr]    |
Dec 17 19:07:00.004 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:07:00.004 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:00.004 INFO [stderr] 
Dec 17 19:07:00.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:00.004 INFO [stderr]    --> src/main.rs:154:9
Dec 17 19:07:00.004 INFO [stderr]     |
Dec 17 19:07:00.004 INFO [stderr] 154 |         window.swap_buffers();
Dec 17 19:07:00.004 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.004 INFO [stderr]     |
Dec 17 19:07:00.004 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:00.004 INFO [stderr] 
Dec 17 19:07:00.016 INFO [stderr] warning: struct is never constructed: `Line`
Dec 17 19:07:00.016 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 17 19:07:00.016 INFO [stderr]   |
Dec 17 19:07:00.016 INFO [stderr] 1 | pub struct Line {
Dec 17 19:07:00.016 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 17 19:07:00.016 INFO [stderr]   |
Dec 17 19:07:00.016 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 19:07:00.016 INFO [stderr] 
Dec 17 19:07:00.016 INFO [stderr] warning: struct is never constructed: `Point`
Dec 17 19:07:00.016 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 17 19:07:00.016 INFO [stderr]   |
Dec 17 19:07:00.016 INFO [stderr] 6 | pub struct Point {
Dec 17 19:07:00.016 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 17 19:07:00.016 INFO [stderr] 
Dec 17 19:07:00.016 INFO [stderr] warning: method is never used: `learning_rate`
Dec 17 19:07:00.016 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 17 19:07:00.016 INFO [stderr]    |
Dec 17 19:07:00.016 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 17 19:07:00.016 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.016 INFO [stderr] 
Dec 17 19:07:00.016 INFO [stderr] warning: method is never used: `unbind`
Dec 17 19:07:00.017 INFO [stderr]    --> src/program.rs:100:5
Dec 17 19:07:00.017 INFO [stderr]     |
Dec 17 19:07:00.017 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 17 19:07:00.017 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.017 INFO [stderr] 
Dec 17 19:07:00.096 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:00.096 INFO [stderr]   --> src/main.rs:70:9
Dec 17 19:07:00.096 INFO [stderr]    |
Dec 17 19:07:00.096 INFO [stderr] 70 |         window.make_current();
Dec 17 19:07:00.096 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.096 INFO [stderr]    |
Dec 17 19:07:00.096 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:07:00.096 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:00.096 INFO [stderr] 
Dec 17 19:07:00.096 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:00.096 INFO [stderr]    --> src/main.rs:154:9
Dec 17 19:07:00.096 INFO [stderr]     |
Dec 17 19:07:00.096 INFO [stderr] 154 |         window.swap_buffers();
Dec 17 19:07:00.096 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:00.096 INFO [stderr]     |
Dec 17 19:07:00.096 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:00.096 INFO [stderr] 
Dec 17 19:07:00.169 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.52s
Dec 17 19:07:01.303 INFO running `"docker" "inspect" "0647c6f233d3154b9b6bbd3d91604ecc28f8abe0b02a82d580f3e0c81fab7f86"`
Dec 17 19:07:01.552 INFO running `"docker" "rm" "-f" "0647c6f233d3154b9b6bbd3d91604ecc28f8abe0b02a82d580f3e0c81fab7f86"`
Dec 17 19:07:01.860 INFO [stdout] 0647c6f233d3154b9b6bbd3d91604ecc28f8abe0b02a82d580f3e0c81fab7f86