Dec 19 12:10:26.561 INFO checking mwalczyk/spectrum_learn_rs against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:10:26.561 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:10:27.001 INFO [stdout] a826ed32bcf6505300fb751410ed5d03ab0921650a4dec03a09d5c802a99f19c
Dec 19 12:10:27.006 INFO running `"docker" "start" "-a" "a826ed32bcf6505300fb751410ed5d03ab0921650a4dec03a09d5c802a99f19c"`
Dec 19 12:10:28.500 INFO [stderr]     Checking lazy_static v0.2.5
Dec 19 12:10:28.500 INFO [stderr]     Checking csv v0.15.0
Dec 19 12:10:28.732 INFO [stderr]     Checking libloading v0.3.4
Dec 19 12:10:28.733 INFO [stderr]     Checking x11-dl v2.12.0
Dec 19 12:10:28.733 INFO [stderr]     Checking shared_library v0.1.5
Dec 19 12:10:29.324 INFO [stderr]     Checking dlib v0.3.1
Dec 19 12:10:29.357 INFO [stderr]     Checking osmesa-sys v0.1.2
Dec 19 12:10:29.594 INFO [stderr]     Checking wayland-sys v0.7.8
Dec 19 12:10:30.180 INFO [stderr]     Checking wayland-client v0.7.8
Dec 19 12:10:32.404 INFO [stderr]     Checking wayland-kbd v0.6.3
Dec 19 12:10:32.404 INFO [stderr]     Checking wayland-window v0.4.4
Dec 19 12:10:33.688 INFO [stderr]     Checking winit v0.5.11
Dec 19 12:10:34.914 INFO [stderr]     Checking glutin v0.7.4
Dec 19 12:10:36.336 INFO [stderr]     Checking spectrum_learn_rs v0.1.0 (/opt/crater/workdir)
Dec 19 12:10:36.756 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 19 12:10:36.756 INFO [stderr]  --> src/program.rs:3:17
Dec 19 12:10:36.756 INFO [stderr]   |
Dec 19 12:10:36.756 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 19 12:10:36.756 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 19 12:10:36.756 INFO [stderr]   |
Dec 19 12:10:36.756 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:10:36.756 INFO [stderr] 
Dec 19 12:10:36.756 INFO [stderr] warning: unused import: `std::mem`
Dec 19 12:10:36.756 INFO [stderr]  --> src/program.rs:4:5
Dec 19 12:10:36.756 INFO [stderr]   |
Dec 19 12:10:36.756 INFO [stderr] 4 | use std::mem;
Dec 19 12:10:36.756 INFO [stderr]   |     ^^^^^^^^
Dec 19 12:10:36.756 INFO [stderr] 
Dec 19 12:10:36.756 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 12:10:36.756 INFO [stderr]  --> src/program.rs:9:5
Dec 19 12:10:36.756 INFO [stderr]   |
Dec 19 12:10:36.756 INFO [stderr] 9 | use std::error::Error;
Dec 19 12:10:36.756 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.756 INFO [stderr] 
Dec 19 12:10:36.756 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 19 12:10:36.756 INFO [stderr]   --> src/main.rs:11:26
Dec 19 12:10:36.756 INFO [stderr]    |
Dec 19 12:10:36.756 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 19 12:10:36.756 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 19 12:10:36.756 INFO [stderr] 
Dec 19 12:10:36.756 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.756 INFO [stderr]   --> src/main.rs:49:5
Dec 19 12:10:36.756 INFO [stderr]    |
Dec 19 12:10:36.756 INFO [stderr] 49 |     /// Setup the window
Dec 19 12:10:36.756 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.756 INFO [stderr]    |
Dec 19 12:10:36.756 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 19 12:10:36.756 INFO [stderr] 
Dec 19 12:10:36.756 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.756 INFO [stderr]   --> src/main.rs:80:9
Dec 19 12:10:36.756 INFO [stderr]    |
Dec 19 12:10:36.756 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 19 12:10:36.757 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.757 INFO [stderr] 
Dec 19 12:10:36.757 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.757 INFO [stderr]   --> src/main.rs:98:9
Dec 19 12:10:36.757 INFO [stderr]    |
Dec 19 12:10:36.757 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 19 12:10:36.757 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.757 INFO [stderr] 
Dec 19 12:10:36.757 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.757 INFO [stderr]    --> src/main.rs:116:9
Dec 19 12:10:36.757 INFO [stderr]     |
Dec 19 12:10:36.757 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 19 12:10:36.757 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.757 INFO [stderr] 
Dec 19 12:10:36.860 INFO [stderr] warning: unused imports: `GLboolean`, `GLfloat`, `GLsizeiptr`
Dec 19 12:10:36.860 INFO [stderr]  --> src/program.rs:3:17
Dec 19 12:10:36.860 INFO [stderr]   |
Dec 19 12:10:36.860 INFO [stderr] 3 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 19 12:10:36.860 INFO [stderr]   |                 ^^^^^^^                                 ^^^^^^^^^^  ^^^^^^^^^
Dec 19 12:10:36.872 INFO [stderr]   |
Dec 19 12:10:36.872 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:10:36.872 INFO [stderr] 
Dec 19 12:10:36.872 INFO [stderr] warning: unused import: `std::mem`
Dec 19 12:10:36.872 INFO [stderr]  --> src/program.rs:4:5
Dec 19 12:10:36.872 INFO [stderr]   |
Dec 19 12:10:36.872 INFO [stderr] 4 | use std::mem;
Dec 19 12:10:36.872 INFO [stderr]   |     ^^^^^^^^
Dec 19 12:10:36.872 INFO [stderr] 
Dec 19 12:10:36.872 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 12:10:36.872 INFO [stderr]  --> src/program.rs:9:5
Dec 19 12:10:36.872 INFO [stderr]   |
Dec 19 12:10:36.872 INFO [stderr] 9 | use std::error::Error;
Dec 19 12:10:36.872 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.873 INFO [stderr] warning: unused imports: `GLboolean`, `GLchar`, `GLenum`, `GLint`, `GLuint`
Dec 19 12:10:36.873 INFO [stderr]   --> src/main.rs:11:26
Dec 19 12:10:36.873 INFO [stderr]    |
Dec 19 12:10:36.873 INFO [stderr] 11 | use gl::types::{GLfloat, GLenum, GLuint, GLint, GLchar, GLsizeiptr, GLboolean};
Dec 19 12:10:36.873 INFO [stderr]    |                          ^^^^^^  ^^^^^^  ^^^^^  ^^^^^^              ^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.873 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.873 INFO [stderr]   --> src/main.rs:49:5
Dec 19 12:10:36.873 INFO [stderr]    |
Dec 19 12:10:36.873 INFO [stderr] 49 |     /// Setup the window
Dec 19 12:10:36.873 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr]    |
Dec 19 12:10:36.873 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.873 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.873 INFO [stderr]   --> src/main.rs:80:9
Dec 19 12:10:36.873 INFO [stderr]    |
Dec 19 12:10:36.873 INFO [stderr] 80 |         /// Create a VBO and VAO for rendering the scatter plot
Dec 19 12:10:36.873 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.873 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.873 INFO [stderr]   --> src/main.rs:98:9
Dec 19 12:10:36.873 INFO [stderr]    |
Dec 19 12:10:36.873 INFO [stderr] 98 |         /// Create a VBO and VAO for rendering the best-fit line
Dec 19 12:10:36.873 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.873 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 12:10:36.873 INFO [stderr]    --> src/main.rs:116:9
Dec 19 12:10:36.873 INFO [stderr]     |
Dec 19 12:10:36.873 INFO [stderr] 116 |         /// Bind the shader program that will be used to draw the
Dec 19 12:10:36.873 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:36.873 INFO [stderr] 
Dec 19 12:10:36.936 INFO [stderr] warning: unused variable: `window_size`
Dec 19 12:10:36.936 INFO [stderr]   --> src/main.rs:53:9
Dec 19 12:10:36.936 INFO [stderr]    |
Dec 19 12:10:36.936 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 19 12:10:36.936 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 19 12:10:36.936 INFO [stderr]    |
Dec 19 12:10:36.936 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:10:36.936 INFO [stderr] 
Dec 19 12:10:36.936 INFO [stderr] warning: unused variable: `shader_program`
Dec 19 12:10:36.936 INFO [stderr]   --> src/main.rs:67:13
Dec 19 12:10:36.936 INFO [stderr]    |
Dec 19 12:10:36.936 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 19 12:10:36.936 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 19 12:10:36.936 INFO [stderr] 
Dec 19 12:10:36.984 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:10:36.984 INFO [stderr]   --> src/main.rs:67:9
Dec 19 12:10:36.984 INFO [stderr]    |
Dec 19 12:10:36.984 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 19 12:10:36.984 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 19 12:10:36.984 INFO [stderr]    |         |
Dec 19 12:10:36.984 INFO [stderr]    |         help: remove this `mut`
Dec 19 12:10:36.984 INFO [stderr]    |
Dec 19 12:10:36.984 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:10:36.984 INFO [stderr] 
Dec 19 12:10:37.008 INFO [stderr] warning: struct is never constructed: `Line`
Dec 19 12:10:37.008 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 19 12:10:37.008 INFO [stderr]   |
Dec 19 12:10:37.008 INFO [stderr] 1 | pub struct Line {
Dec 19 12:10:37.008 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 19 12:10:37.008 INFO [stderr]   |
Dec 19 12:10:37.008 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:10:37.008 INFO [stderr] 
Dec 19 12:10:37.008 INFO [stderr] warning: struct is never constructed: `Point`
Dec 19 12:10:37.008 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 19 12:10:37.008 INFO [stderr]   |
Dec 19 12:10:37.008 INFO [stderr] 6 | pub struct Point {
Dec 19 12:10:37.008 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 19 12:10:37.008 INFO [stderr] 
Dec 19 12:10:37.008 INFO [stderr] warning: method is never used: `learning_rate`
Dec 19 12:10:37.008 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 19 12:10:37.008 INFO [stderr]    |
Dec 19 12:10:37.008 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 19 12:10:37.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.008 INFO [stderr] 
Dec 19 12:10:37.008 INFO [stderr] warning: method is never used: `unbind`
Dec 19 12:10:37.008 INFO [stderr]    --> src/program.rs:100:5
Dec 19 12:10:37.008 INFO [stderr]     |
Dec 19 12:10:37.008 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 19 12:10:37.009 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.009 INFO [stderr] 
Dec 19 12:10:37.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:10:37.072 INFO [stderr]   --> src/main.rs:70:9
Dec 19 12:10:37.072 INFO [stderr]    |
Dec 19 12:10:37.072 INFO [stderr] 70 |         window.make_current();
Dec 19 12:10:37.072 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.072 INFO [stderr]    |
Dec 19 12:10:37.072 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:10:37.072 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:10:37.072 INFO [stderr] 
Dec 19 12:10:37.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:10:37.072 INFO [stderr]    --> src/main.rs:154:9
Dec 19 12:10:37.072 INFO [stderr]     |
Dec 19 12:10:37.072 INFO [stderr] 154 |         window.swap_buffers();
Dec 19 12:10:37.072 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.072 INFO [stderr]     |
Dec 19 12:10:37.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:10:37.072 INFO [stderr] 
Dec 19 12:10:37.080 INFO [stderr] warning: unused variable: `window_size`
Dec 19 12:10:37.080 INFO [stderr]   --> src/main.rs:53:9
Dec 19 12:10:37.080 INFO [stderr]    |
Dec 19 12:10:37.080 INFO [stderr] 53 |     let window_size = window.get_inner_size();
Dec 19 12:10:37.080 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_window_size` instead
Dec 19 12:10:37.080 INFO [stderr]    |
Dec 19 12:10:37.080 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:10:37.080 INFO [stderr] 
Dec 19 12:10:37.080 INFO [stderr] warning: unused variable: `shader_program`
Dec 19 12:10:37.080 INFO [stderr]   --> src/main.rs:67:13
Dec 19 12:10:37.080 INFO [stderr]    |
Dec 19 12:10:37.080 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 19 12:10:37.080 INFO [stderr]    |             ^^^^^^^^^^^^^^ help: consider using `_shader_program` instead
Dec 19 12:10:37.080 INFO [stderr] 
Dec 19 12:10:37.116 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:10:37.116 INFO [stderr]   --> src/main.rs:67:9
Dec 19 12:10:37.116 INFO [stderr]    |
Dec 19 12:10:37.116 INFO [stderr] 67 |     let mut shader_program = 0;
Dec 19 12:10:37.116 INFO [stderr]    |         ----^^^^^^^^^^^^^^
Dec 19 12:10:37.116 INFO [stderr]    |         |
Dec 19 12:10:37.116 INFO [stderr]    |         help: remove this `mut`
Dec 19 12:10:37.116 INFO [stderr]    |
Dec 19 12:10:37.116 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:10:37.116 INFO [stderr] 
Dec 19 12:10:37.124 INFO [stderr] warning: struct is never constructed: `Line`
Dec 19 12:10:37.124 INFO [stderr]  --> src/linear_regression.rs:1:1
Dec 19 12:10:37.124 INFO [stderr]   |
Dec 19 12:10:37.124 INFO [stderr] 1 | pub struct Line {
Dec 19 12:10:37.124 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 19 12:10:37.124 INFO [stderr]   |
Dec 19 12:10:37.124 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:10:37.124 INFO [stderr] 
Dec 19 12:10:37.124 INFO [stderr] warning: struct is never constructed: `Point`
Dec 19 12:10:37.124 INFO [stderr]  --> src/linear_regression.rs:6:1
Dec 19 12:10:37.124 INFO [stderr]   |
Dec 19 12:10:37.124 INFO [stderr] 6 | pub struct Point {
Dec 19 12:10:37.124 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 19 12:10:37.124 INFO [stderr] 
Dec 19 12:10:37.124 INFO [stderr] warning: method is never used: `learning_rate`
Dec 19 12:10:37.124 INFO [stderr]   --> src/linear_regression.rs:33:5
Dec 19 12:10:37.124 INFO [stderr]    |
Dec 19 12:10:37.124 INFO [stderr] 33 |     pub fn learning_rate(mut self, rate: f32) -> LinearRegression<'a> {
Dec 19 12:10:37.124 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.124 INFO [stderr] 
Dec 19 12:10:37.124 INFO [stderr] warning: method is never used: `unbind`
Dec 19 12:10:37.124 INFO [stderr]    --> src/program.rs:100:5
Dec 19 12:10:37.124 INFO [stderr]     |
Dec 19 12:10:37.124 INFO [stderr] 100 |     pub fn unbind(&self) {
Dec 19 12:10:37.125 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.125 INFO [stderr] 
Dec 19 12:10:37.144 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:10:37.144 INFO [stderr]   --> src/main.rs:70:9
Dec 19 12:10:37.144 INFO [stderr]    |
Dec 19 12:10:37.144 INFO [stderr] 70 |         window.make_current();
Dec 19 12:10:37.144 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.144 INFO [stderr]    |
Dec 19 12:10:37.144 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:10:37.144 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:10:37.144 INFO [stderr] 
Dec 19 12:10:37.144 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:10:37.144 INFO [stderr]    --> src/main.rs:154:9
Dec 19 12:10:37.144 INFO [stderr]     |
Dec 19 12:10:37.144 INFO [stderr] 154 |         window.swap_buffers();
Dec 19 12:10:37.144 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:10:37.144 INFO [stderr]     |
Dec 19 12:10:37.144 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:10:37.144 INFO [stderr] 
Dec 19 12:10:37.188 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.94s
Dec 19 12:10:38.067 INFO running `"docker" "inspect" "a826ed32bcf6505300fb751410ed5d03ab0921650a4dec03a09d5c802a99f19c"`
Dec 19 12:10:38.334 INFO running `"docker" "rm" "-f" "a826ed32bcf6505300fb751410ed5d03ab0921650a4dec03a09d5c802a99f19c"`
Dec 19 12:10:38.640 INFO [stdout] a826ed32bcf6505300fb751410ed5d03ab0921650a4dec03a09d5c802a99f19c