[INFO] updating cached repository https://github.com/covercash2/germ
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3a27e564d41bddaf9f16bd75456e1f1693443c0f
[INFO] checking covercash2/germ against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcovercash2%2Fgerm" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/covercash2/germ on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/covercash2/germ
[INFO] finished tweaking git repo https://github.com/covercash2/germ
[INFO] tweaked toml for git repo https://github.com/covercash2/germ written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/covercash2/germ already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0577c9a8f073481ed8d90d6f0335cb2ffe0ecc33b1c25dc3b0fe14340160717c
[INFO] running `"docker" "start" "-a" "0577c9a8f073481ed8d90d6f0335cb2ffe0ecc33b1c25dc3b0fe14340160717c"`
[INFO] [stderr]    Compiling num-integer v0.1.38
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[INFO] [stderr]    Compiling gdk-sys v0.7.0
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[INFO] [stderr] warning: unused import: `Event`
[INFO] [stderr]  --> src/app/mod.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ui::{Event, Ui};
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/app/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/ui/backend/conrod/mod.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |         'main: loop {
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / macro_rules! clone {
[INFO] [stderr] 24 | |     (@param _) => ( _ );
[INFO] [stderr] 25 | |     (@param $x:ident) => ( $x );
[INFO] [stderr] 26 | |     ($($n:ident),+ => move || $body:expr) => (
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     );
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Event`
[INFO] [stderr]  --> src/app/mod.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ui::{Event, Ui};
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/app/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `while` condition
[INFO] [stderr]   --> src/shell/mod.rs:97:15
[INFO] [stderr]    |
[INFO] [stderr] 97 |         while (!buffer.eq(expected_output)) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/shell/mod.rs:99:16
[INFO] [stderr]    |
[INFO] [stderr] 99 |             if (iters >= max_iters) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]    --> src/stream/mod.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |     use std::io;
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/ui/backend/conrod/mod.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |         'main: loop {
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures`
[INFO] [stderr]  --> src/ui/backend/gtk/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / macro_rules! clone {
[INFO] [stderr] 24 | |     (@param _) => ( _ );
[INFO] [stderr] 25 | |     (@param $x:ident) => ( $x );
[INFO] [stderr] 26 | |     ($($n:ident),+ => move || $body:expr) => (
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     );
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/stream/mod.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |                     Some(Err(e)) => {
[INFO] [stderr]    |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/stream/mod.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]    --> src/stream/mod.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     use std::io::Read;
[INFO] [stderr]     |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/stream/mod.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |                     Some(Err(e)) => {
[INFO] [stderr]    |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/stream/mod.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/stream/mod.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |         let mut result: Vec<u8> = Vec::new();
[INFO] [stderr]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start_instant`
[INFO] [stderr]    --> src/stream/mod.rs:217:13
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let start_instant = Instant::now();
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_instant`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/stream/mod.rs:235:17
[INFO] [stderr]     |
[INFO] [stderr] 235 |         let mut result: Vec<u8> = Vec::new();
[INFO] [stderr]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `title`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:94:19
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn create(title: String, dimensions: [i32; 2]) -> Result<Gtk, glib::BoolError> {
[INFO] [stderr]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dimensions`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:94:34
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn create(title: String, dimensions: [i32; 2]) -> Result<Gtk, glib::BoolError> {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dimensions`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:138:25
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut buffer = view.get_buffer().expect("couldn't get input text buffer");
[INFO] [stderr]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer_clone`
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let buffer_clone = buffer.clone();
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer_clone`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `title`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:94:19
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn create(title: String, dimensions: [i32; 2]) -> Result<Gtk, glib::BoolError> {
[INFO] [stderr]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dimensions`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:94:34
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn create(title: String, dimensions: [i32; 2]) -> Result<Gtk, glib::BoolError> {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dimensions`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:138:25
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut buffer = view.get_buffer().expect("couldn't get input text buffer");
[INFO] [stderr]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer_clone`
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let buffer_clone = buffer.clone();
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer_clone`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `font`
[INFO] [stderr]   --> src/ui/mod.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let font = load_font(font_name).expect("could not load default font");
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_font`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/stream/mod.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |         let mut stream = ByteStream::spawn(test_readable);
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/stream/mod.rs:214:13
[INFO] [stderr]     |
[INFO] [stderr] 214 |         let mut result: Vec<u8> = Vec::new();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/stream/mod.rs:235:13
[INFO] [stderr]     |
[INFO] [stderr] 235 |         let mut result: Vec<u8> = Vec::new();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut buffer = view.get_buffer().expect("couldn't get input text buffer");
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn show(&mut self, mut shell: Shell) -> Result<(), Self::Error> {
[INFO] [stderr]     |                        ----^^^^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Error`
[INFO] [stderr]  --> src/app/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type Error = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `App`
[INFO] [stderr]  --> src/app/mod.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct App<U: Ui> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/app/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(shell: Shell, ui: U) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exit`
[INFO] [stderr]   --> src/app/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn exit(self) -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_FONT`
[INFO] [stderr]  --> src/constants.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub const DEFAULT_FONT: &'static str = "Andale Mono";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_DIMENSIONS`
[INFO] [stderr]  --> src/constants.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub const DEFAULT_DIMENSIONS: [u32; 2] = [480, 800];
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_TITLE`
[INFO] [stderr]  --> src/constants.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const DEFAULT_TITLE: &'static str = "germ";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `child`
[INFO] [stderr]   --> src/shell/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     child: Child,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stderr`
[INFO] [stderr]   --> src/shell/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stderr: stream::LockByteStream,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exit`
[INFO] [stderr]   --> src/shell/mod.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn exit(&mut self) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stop`
[INFO] [stderr]   --> src/stream/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Stop,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread_handle`
[INFO] [stderr]   --> src/stream/mod.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread_handle: JoinHandle<io::Result<()>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `signal_sender`
[INFO] [stderr]   --> src/stream/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     signal_sender: Sender<Signal>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 let mut buffer = view.get_buffer().expect("couldn't get input text buffer");
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stop`
[INFO] [stderr]   --> src/stream/mod.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn stop(&self) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread_handle`
[INFO] [stderr]    --> src/stream/mod.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     thread_handle: JoinHandle<io::Result<()>>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send_buffer`
[INFO] [stderr]    --> src/stream/mod.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn send_buffer(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close`
[INFO] [stderr]    --> src/stream/mod.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn close(self) -> ::std::thread::Result<io::Result<()>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_error`
[INFO] [stderr]    --> src/stream/mod.rs:192:4
[INFO] [stderr]     |
[INFO] [stderr] 192 | fn debug_error<T>(msg: &'static str) -> io::Result<T> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/backend/conrod/text.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(widget_id: widget::Id, parent_id: widget::Id, editable: bool) -> Text {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/backend/conrod/mod.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new(font_family: String, vsync: bool) -> Result<Self, String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `destroy_default_context`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn destroy_default_context() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load_font`
[INFO] [stderr]   --> src/ui/mod.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn load_font(family: &str) -> Result<Vec<u8>, String> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ui/backend/gtk/mod.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn show(&mut self, mut shell: Shell) -> Result<(), Self::Error> {
[INFO] [stderr]     |                        ----^^^^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `const_str_as_bytes`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_str_as_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             context.shell.exit();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Error`
[INFO] [stderr]  --> src/app/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type Error = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `App`
[INFO] [stderr]  --> src/app/mod.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct App<U: Ui> {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/app/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(shell: Shell, ui: U) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exit`
[INFO] [stderr]   --> src/app/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn exit(self) -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_DIMENSIONS`
[INFO] [stderr]  --> src/constants.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub const DEFAULT_DIMENSIONS: [u32; 2] = [480, 800];
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_TITLE`
[INFO] [stderr]  --> src/constants.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const DEFAULT_TITLE: &'static str = "germ";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `child`
[INFO] [stderr]   --> src/shell/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     child: Child,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stderr`
[INFO] [stderr]   --> src/shell/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stderr: stream::LockByteStream,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exit`
[INFO] [stderr]   --> src/shell/mod.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn exit(&mut self) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread_handle`
[INFO] [stderr]   --> src/stream/mod.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread_handle: JoinHandle<io::Result<()>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread_handle`
[INFO] [stderr]    --> src/stream/mod.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     thread_handle: JoinHandle<io::Result<()>>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `close`
[INFO] [stderr]    --> src/stream/mod.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn close(self) -> ::std::thread::Result<io::Result<()>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_error`
[INFO] [stderr]    --> src/stream/mod.rs:192:4
[INFO] [stderr]     |
[INFO] [stderr] 192 | fn debug_error<T>(msg: &'static str) -> io::Result<T> {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TIMEOUT_SECS`
[INFO] [stderr]    --> src/stream/mod.rs:209:5
[INFO] [stderr]     |
[INFO] [stderr] 209 |     const TIMEOUT_SECS: u64 = 3;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/backend/conrod/text.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(widget_id: widget::Id, parent_id: widget::Id, editable: bool) -> Text {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/backend/conrod/mod.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new(font_family: String, vsync: bool) -> Result<Self, String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `destroy_default_context`
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn destroy_default_context() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `const_str_as_bytes`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_str_as_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shell/mod.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         shell.execute(command);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/shell/mod.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             hello_world(&mut shell);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: constant `test_readable` should have an upper case name
[INFO] [stderr]    --> src/stream/mod.rs:207:11
[INFO] [stderr]     |
[INFO] [stderr] 207 |     const test_readable: &[u8] = "hello world".as_bytes();
[INFO] [stderr]     |           ^^^^^^^^^^^^^ help: convert the identifier to upper case: `TEST_READABLE`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ui/backend/gtk/mod.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             context.shell.exit();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `germ`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `germ`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0577c9a8f073481ed8d90d6f0335cb2ffe0ecc33b1c25dc3b0fe14340160717c"`
[INFO] running `"docker" "rm" "-f" "0577c9a8f073481ed8d90d6f0335cb2ffe0ecc33b1c25dc3b0fe14340160717c"`
[INFO] [stdout] 0577c9a8f073481ed8d90d6f0335cb2ffe0ecc33b1c25dc3b0fe14340160717c
