Dec 05 13:25:43.855 INFO testing mwalczyk/spectrum_learn_rs against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 13:25:43.856 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:25:44.232 INFO [stdout] d4de1eaac32992184a153d0f800d4bdaf60ee578d1fe155c70d2422217fee98a
Dec 05 13:25:44.232 INFO running `"docker" "start" "-a" "d4de1eaac32992184a153d0f800d4bdaf60ee578d1fe155c70d2422217fee98a"`
Dec 05 13:25:45.292 INFO [stderr] usermod: no changes
Dec 05 13:25:45.528 INFO [stderr]    Compiling lazy_static v0.2.5
Dec 05 13:25:45.528 INFO [stderr]    Compiling csv v0.15.0
Dec 05 13:25:45.784 INFO [stderr]    Compiling libloading v0.3.4
Dec 05 13:25:45.784 INFO [stderr]    Compiling shared_library v0.1.5
Dec 05 13:25:45.784 INFO [stderr]    Compiling x11-dl v2.12.0
Dec 05 13:25:47.260 INFO [stderr]    Compiling osmesa-sys v0.1.2
Dec 05 13:25:47.676 INFO [stderr]    Compiling dlib v0.3.1
Dec 05 13:25:48.616 INFO [stderr]    Compiling wayland-sys v0.7.8
Dec 05 13:25:50.652 INFO [stderr]    Compiling wayland-client v0.7.8
Dec 05 13:25:53.643 INFO [stderr]    Compiling wayland-kbd v0.6.3
Dec 05 13:25:53.643 INFO [stderr]    Compiling wayland-window v0.4.4
Dec 05 13:25:57.720 INFO [stderr]    Compiling winit v0.5.11
Dec 05 13:26:02.504 INFO [stderr]    Compiling glutin v0.7.4
Dec 05 13:26:05.650 INFO [stderr]    Compiling spectrum_learn_rs v0.1.0 (/source)
Dec 05 13:26:06.410 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 05 13:26:06.410 INFO [stderr]  --> src/program.rs:3:17
Dec 05 13:26:06.410 INFO [stderr]   |
Dec 05 13:26:06.410 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 05 13:26:06.410 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 05 13:26:06.410 INFO [stderr]   |
Dec 05 13:26:06.410 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 13:26:06.410 INFO [stderr] 
Dec 05 13:26:06.410 INFO [stderr] warning: unused import: `std::mem`
Dec 05 13:26:06.410 INFO [stderr]  --> src/program.rs:4:5
Dec 05 13:26:06.410 INFO [stderr]   |
Dec 05 13:26:06.410 INFO [stderr] 4 | use std::mem;
Dec 05 13:26:06.410 INFO [stderr]   |     ^^^^^^^^
Dec 05 13:26:06.410 INFO [stderr] 
Dec 05 13:26:06.410 INFO [stderr] warning: unused import: `std::error::Error`
Dec 05 13:26:06.410 INFO [stderr]  --> src/program.rs:9:5
Dec 05 13:26:06.410 INFO [stderr]   |
Dec 05 13:26:06.410 INFO [stderr] 9 | use std::error::Error;
Dec 05 13:26:06.410 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.410 INFO [stderr] 
Dec 05 13:26:06.410 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 05 13:26:06.410 INFO [stderr]   --> src/main.rs:11:26
Dec 05 13:26:06.410 INFO [stderr]    |
Dec 05 13:26:06.410 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 05 13:26:06.410 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 05 13:26:06.410 INFO [stderr] 
Dec 05 13:26:06.411 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:06.411 INFO [stderr]   --> src/main.rs:49:5
Dec 05 13:26:06.411 INFO [stderr]    |
Dec 05 13:26:06.411 INFO [stderr] 49 |     /// Setup the window
Dec 05 13:26:06.411 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.411 INFO [stderr]    |
Dec 05 13:26:06.411 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 05 13:26:06.411 INFO [stderr] 
Dec 05 13:26:06.411 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:06.411 INFO [stderr]   --> src/main.rs:80:9
Dec 05 13:26:06.411 INFO [stderr]    |
Dec 05 13:26:06.411 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 05 13:26:06.411 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.411 INFO [stderr] 
Dec 05 13:26:06.411 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:06.411 INFO [stderr]   --> src/main.rs:98:9
Dec 05 13:26:06.411 INFO [stderr]    |
Dec 05 13:26:06.411 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 05 13:26:06.411 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.411 INFO [stderr] 
Dec 05 13:26:06.411 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:06.411 INFO [stderr]    --> src/main.rs:116:9
Dec 05 13:26:06.411 INFO [stderr]     |
Dec 05 13:26:06.411 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 05 13:26:06.411 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.411 INFO [stderr] 
Dec 05 13:26:06.500 INFO [stderr] warning: unused variable: `window_size`
Dec 05 13:26:06.500 INFO [stderr]   --> src/main.rs:53:9
Dec 05 13:26:06.500 INFO [stderr]    |
Dec 05 13:26:06.500 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 05 13:26:06.500 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 05 13:26:06.500 INFO [stderr]    |
Dec 05 13:26:06.500 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 13:26:06.501 INFO [stderr] 
Dec 05 13:26:06.501 INFO [stderr] warning: unused variable: `shader_program`
Dec 05 13:26:06.501 INFO [stderr]   --> src/main.rs:67:13
Dec 05 13:26:06.501 INFO [stderr]    |
Dec 05 13:26:06.501 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 05 13:26:06.501 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 05 13:26:06.501 INFO [stderr] 
Dec 05 13:26:06.512 INFO [stderr] warning: variable does not need to be mutable
Dec 05 13:26:06.512 INFO [stderr]   --> src/main.rs:67:9
Dec 05 13:26:06.512 INFO [stderr]    |
Dec 05 13:26:06.512 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 05 13:26:06.512 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 05 13:26:06.512 INFO [stderr]    |         |
Dec 05 13:26:06.512 INFO [stderr]    |         help: remove this `mut`
Dec 05 13:26:06.512 INFO [stderr]    |
Dec 05 13:26:06.512 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 13:26:06.512 INFO [stderr] 
Dec 05 13:26:06.520 INFO [stderr] warning: struct is never constructed: `Line`
Dec 05 13:26:06.520 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 05 13:26:06.520 INFO [stderr]   |
Dec 05 13:26:06.520 INFO [stderr] 1 | pub struct Line {
Dec 05 13:26:06.520 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 05 13:26:06.520 INFO [stderr]   |
Dec 05 13:26:06.520 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 13:26:06.520 INFO [stderr] 
Dec 05 13:26:06.520 INFO [stderr] warning: struct is never constructed: `Point`
Dec 05 13:26:06.520 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 05 13:26:06.520 INFO [stderr]   |
Dec 05 13:26:06.520 INFO [stderr] 6 | pub struct Point {
Dec 05 13:26:06.520 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 13:26:06.520 INFO [stderr] 
Dec 05 13:26:06.520 INFO [stderr] warning: method is never used: `learning_rate`
Dec 05 13:26:06.520 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 05 13:26:06.520 INFO [stderr]    |
Dec 05 13:26:06.520 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 05 13:26:06.520 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.521 INFO [stderr] 
Dec 05 13:26:06.521 INFO [stderr] warning: method is never used: `unbind`
Dec 05 13:26:06.521 INFO [stderr]    --> src/program.rs:100:5
Dec 05 13:26:06.521 INFO [stderr]     |
Dec 05 13:26:06.521 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 05 13:26:06.521 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.521 INFO [stderr] 
Dec 05 13:26:06.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:26:06.552 INFO [stderr]   --> src/main.rs:70:9
Dec 05 13:26:06.552 INFO [stderr]    |
Dec 05 13:26:06.552 INFO [stderr] 70 |         window.make_current();
Dec 05 13:26:06.552 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.552 INFO [stderr]    |
Dec 05 13:26:06.552 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:26:06.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:26:06.552 INFO [stderr] 
Dec 05 13:26:06.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:26:06.552 INFO [stderr]    --> src/main.rs:154:9
Dec 05 13:26:06.552 INFO [stderr]     |
Dec 05 13:26:06.553 INFO [stderr] 154 |         window.swap_buffers();
Dec 05 13:26:06.553 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:06.553 INFO [stderr]     |
Dec 05 13:26:06.553 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:26:06.553 INFO [stderr] 
Dec 05 13:26:10.752 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.41s
Dec 05 13:26:10.760 INFO [stderr] su: No module specific data is present
Dec 05 13:26:12.152 INFO running `"docker" "inspect" "d4de1eaac32992184a153d0f800d4bdaf60ee578d1fe155c70d2422217fee98a"`
Dec 05 13:26:12.438 INFO running `"docker" "rm" "-f" "d4de1eaac32992184a153d0f800d4bdaf60ee578d1fe155c70d2422217fee98a"`
Dec 05 13:26:12.808 INFO [stdout] d4de1eaac32992184a153d0f800d4bdaf60ee578d1fe155c70d2422217fee98a
Dec 05 13:26:12.810 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:26:13.505 INFO [stdout] f62ffcd252a77c36d613fe87567cf07eda2b2f0972e154be673a2472dea3a01d
Dec 05 13:26:13.510 INFO running `"docker" "start" "-a" "f62ffcd252a77c36d613fe87567cf07eda2b2f0972e154be673a2472dea3a01d"`
Dec 05 13:26:14.604 INFO [stderr] usermod: no changes
Dec 05 13:26:14.772 INFO [stderr]    Compiling spectrum_learn_rs v0.1.0 (/source)
Dec 05 13:26:15.552 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 05 13:26:15.552 INFO [stderr]  --> src/program.rs:3:17
Dec 05 13:26:15.552 INFO [stderr]   |
Dec 05 13:26:15.552 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 05 13:26:15.552 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 05 13:26:15.552 INFO [stderr]   |
Dec 05 13:26:15.552 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 13:26:15.552 INFO [stderr] 
Dec 05 13:26:15.552 INFO [stderr] warning: unused import: `std::mem`
Dec 05 13:26:15.552 INFO [stderr]  --> src/program.rs:4:5
Dec 05 13:26:15.552 INFO [stderr]   |
Dec 05 13:26:15.552 INFO [stderr] 4 | use std::mem;
Dec 05 13:26:15.552 INFO [stderr]   |     ^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: unused import: `std::error::Error`
Dec 05 13:26:15.553 INFO [stderr]  --> src/program.rs:9:5
Dec 05 13:26:15.553 INFO [stderr]   |
Dec 05 13:26:15.553 INFO [stderr] 9 | use std::error::Error;
Dec 05 13:26:15.553 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 05 13:26:15.553 INFO [stderr]   --> src/main.rs:11:26
Dec 05 13:26:15.553 INFO [stderr]    |
Dec 05 13:26:15.553 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 05 13:26:15.553 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:15.553 INFO [stderr]   --> src/main.rs:49:5
Dec 05 13:26:15.553 INFO [stderr]    |
Dec 05 13:26:15.553 INFO [stderr] 49 |     /// Setup the window
Dec 05 13:26:15.553 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr]    |
Dec 05 13:26:15.553 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:15.553 INFO [stderr]   --> src/main.rs:80:9
Dec 05 13:26:15.553 INFO [stderr]    |
Dec 05 13:26:15.553 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 05 13:26:15.553 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:15.553 INFO [stderr]   --> src/main.rs:98:9
Dec 05 13:26:15.553 INFO [stderr]    |
Dec 05 13:26:15.553 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 05 13:26:15.553 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.553 INFO [stderr] warning: doc comment not used by rustdoc
Dec 05 13:26:15.553 INFO [stderr]    --> src/main.rs:116:9
Dec 05 13:26:15.553 INFO [stderr]     |
Dec 05 13:26:15.553 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 05 13:26:15.553 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.553 INFO [stderr] 
Dec 05 13:26:15.644 INFO [stderr] warning: unused variable: `window_size`
Dec 05 13:26:15.644 INFO [stderr]   --> src/main.rs:53:9
Dec 05 13:26:15.644 INFO [stderr]    |
Dec 05 13:26:15.644 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 05 13:26:15.644 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 05 13:26:15.644 INFO [stderr]    |
Dec 05 13:26:15.644 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 13:26:15.644 INFO [stderr] 
Dec 05 13:26:15.644 INFO [stderr] warning: unused variable: `shader_program`
Dec 05 13:26:15.644 INFO [stderr]   --> src/main.rs:67:13
Dec 05 13:26:15.644 INFO [stderr]    |
Dec 05 13:26:15.644 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 05 13:26:15.644 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 05 13:26:15.644 INFO [stderr] 
Dec 05 13:26:15.664 INFO [stderr] warning: variable does not need to be mutable
Dec 05 13:26:15.664 INFO [stderr]   --> src/main.rs:67:9
Dec 05 13:26:15.664 INFO [stderr]    |
Dec 05 13:26:15.664 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 05 13:26:15.664 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 05 13:26:15.664 INFO [stderr]    |         |
Dec 05 13:26:15.664 INFO [stderr]    |         help: remove this `mut`
Dec 05 13:26:15.664 INFO [stderr]    |
Dec 05 13:26:15.664 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 13:26:15.664 INFO [stderr] 
Dec 05 13:26:15.676 INFO [stderr] warning: struct is never constructed: `Line`
Dec 05 13:26:15.676 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 05 13:26:15.676 INFO [stderr]   |
Dec 05 13:26:15.676 INFO [stderr] 1 | pub struct Line {
Dec 05 13:26:15.676 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 05 13:26:15.676 INFO [stderr]   |
Dec 05 13:26:15.676 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 13:26:15.676 INFO [stderr] 
Dec 05 13:26:15.676 INFO [stderr] warning: struct is never constructed: `Point`
Dec 05 13:26:15.676 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 05 13:26:15.676 INFO [stderr]   |
Dec 05 13:26:15.676 INFO [stderr] 6 | pub struct Point {
Dec 05 13:26:15.676 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 13:26:15.676 INFO [stderr] 
Dec 05 13:26:15.676 INFO [stderr] warning: method is never used: `learning_rate`
Dec 05 13:26:15.676 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 05 13:26:15.676 INFO [stderr]    |
Dec 05 13:26:15.676 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 05 13:26:15.676 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.676 INFO [stderr] 
Dec 05 13:26:15.676 INFO [stderr] warning: method is never used: `unbind`
Dec 05 13:26:15.676 INFO [stderr]    --> src/program.rs:100:5
Dec 05 13:26:15.676 INFO [stderr]     |
Dec 05 13:26:15.676 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 05 13:26:15.677 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.677 INFO [stderr] 
Dec 05 13:26:15.694 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:26:15.694 INFO [stderr]   --> src/main.rs:70:9
Dec 05 13:26:15.694 INFO [stderr]    |
Dec 05 13:26:15.694 INFO [stderr] 70 |         window.make_current();
Dec 05 13:26:15.694 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.694 INFO [stderr]    |
Dec 05 13:26:15.694 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:26:15.694 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:26:15.694 INFO [stderr] 
Dec 05 13:26:15.696 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:26:15.696 INFO [stderr]    --> src/main.rs:154:9
Dec 05 13:26:15.696 INFO [stderr]     |
Dec 05 13:26:15.696 INFO [stderr] 154 |         window.swap_buffers();
Dec 05 13:26:15.696 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:26:15.696 INFO [stderr]     |
Dec 05 13:26:15.696 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:26:15.696 INFO [stderr] 
Dec 05 13:26:16.067 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
Dec 05 13:26:16.078 INFO [stderr] su: No module specific data is present
Dec 05 13:26:17.078 INFO running `"docker" "inspect" "f62ffcd252a77c36d613fe87567cf07eda2b2f0972e154be673a2472dea3a01d"`
Dec 05 13:26:17.332 INFO running `"docker" "rm" "-f" "f62ffcd252a77c36d613fe87567cf07eda2b2f0972e154be673a2472dea3a01d"`
Dec 05 13:26:17.630 INFO [stdout] f62ffcd252a77c36d613fe87567cf07eda2b2f0972e154be673a2472dea3a01d
Dec 05 13:26:17.636 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:26:18.080 INFO [stdout] 2548bc49e7e3bc3b26cd9151832ee07a04814575739c267ec16ed55c2025a689
Dec 05 13:26:18.089 INFO running `"docker" "start" "-a" "2548bc49e7e3bc3b26cd9151832ee07a04814575739c267ec16ed55c2025a689"`
Dec 05 13:26:19.044 INFO [stderr] usermod: no changes
Dec 05 13:26:19.170 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
Dec 05 13:26:19.187 INFO [stderr]      Running /target/debug/deps/spectrum_learn_rs-bce55ee5e713641f
Dec 05 13:26:19.187 INFO [stdout] 
Dec 05 13:26:19.187 INFO [stdout] running 0 tests
Dec 05 13:26:19.192 INFO [stdout] 
Dec 05 13:26:19.192 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 13:26:19.192 INFO [stdout] 
Dec 05 13:26:19.194 INFO [stderr] su: No module specific data is present
Dec 05 13:26:19.824 INFO running `"docker" "inspect" "2548bc49e7e3bc3b26cd9151832ee07a04814575739c267ec16ed55c2025a689"`
Dec 05 13:26:20.120 INFO running `"docker" "rm" "-f" "2548bc49e7e3bc3b26cd9151832ee07a04814575739c267ec16ed55c2025a689"`
Dec 05 13:26:20.515 INFO [stdout] 2548bc49e7e3bc3b26cd9151832ee07a04814575739c267ec16ed55c2025a689