[INFO] cloning repository https://github.com/DCubix/Twen
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DCubix/Twen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FTwen"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FTwen'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 72f220dc0d1c22983f13ecd8a3e43f6985e435f6
[INFO] checking DCubix/Twen against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCubix%2FTwen" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DCubix/Twen on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/DCubix/Twen
[INFO] finished tweaking git repo https://github.com/DCubix/Twen
[INFO] tweaked toml for git repo https://github.com/DCubix/Twen written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/DCubix/Twen already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 96ffbe6840e5c0667c9ffcf6982a3d7cee4aa2e8a87faa25bfbc2fa3222faa2b
[INFO] running `"docker" "start" "-a" "96ffbe6840e5c0667c9ffcf6982a3d7cee4aa2e8a87faa25bfbc2fa3222faa2b"`
[INFO] [stderr]    Compiling sdl2-sys v0.32.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking sdl2 v0.32.0
[INFO] [stderr]     Checking notify v4.0.6
[INFO] [stderr]     Checking twen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/parser.rs:95:7
[INFO] [stderr]    |
[INFO] [stderr] 95 |             'a'...'z' | 'A'...'Z' | '_' => { // Identifier
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/parser.rs:95:19
[INFO] [stderr]    |
[INFO] [stderr] 95 |             'a'...'z' | 'A'...'Z' | '_' => { // Identifier
[INFO] [stderr]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |             '-' | '0'...'9' | '.' => { // Number
[INFO] [stderr]     |                      ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Input`, `NodeGraph`
[INFO] [stderr]  --> src/main.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::node::{ NodeGraph, Input };
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]  --> src/main.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::parser::{ Parser, GraphLoader };
[INFO] [stderr]   |                     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/node.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 |             _ => 0.0
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/parser.rs:422:4
[INFO] [stderr]     |
[INFO] [stderr] 422 |             _ => Value::Nil
[INFO] [stderr]     |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec`
[INFO] [stderr]   --> src/main.rs:60:61
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut device = audio.open_playback(None, &desired_spec, |spec| {
[INFO] [stderr]    |                                                                ^^^^ help: consider prefixing with an underscore: `_spec`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:6
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut device = audio.open_playback(None, &desired_spec, |spec| {
[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: private type `node::InputContext<'_, '_>` in public interface (error E0446)
[INFO] [stderr]   --> src/node.rs:34:2
[INFO] [stderr]    |
[INFO] [stderr] 34 |       pub fn sample(self, ctx: InputContext) -> f32 {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 35 | |         match self {
[INFO] [stderr] 36 | |             Input::Value(v) => v,
[INFO] [stderr] 37 | |             Input::Node(id) => ctx.outputs[id],
[INFO] [stderr] ...  |
[INFO] [stderr] 40 | |         }
[INFO] [stderr] 41 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Null`
[INFO] [stderr]   --> src/node.rs:46:2
[INFO] [stderr]    |
[INFO] [stderr] 46 |     Null,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete_node`
[INFO] [stderr]    --> src/node.rs:174:2
[INFO] [stderr]     |
[INFO] [stderr] 174 |     pub fn delete_node(&mut self, id: usize) -> Result<(), &str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prev`
[INFO] [stderr]   --> src/parser.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn prev(&self) -> Option<char> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/parser.rs:41:2
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn peek(&self) -> Option<char> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step_back`
[INFO] [stderr]   --> src/parser.rs:48:2
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn step_back(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `audioSender` should have a snake case name
[INFO] [stderr]   --> src/main.rs:58:7
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (audioSender, rx) = mpsc::channel();
[INFO] [stderr]    |          ^^^^^^^^^^^ help: convert the identifier to snake case: `audio_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `audioReceiver` should have a snake case name
[INFO] [stderr]   --> src/main.rs:59:11
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (cs, audioReceiver) = mpsc::channel();
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: convert the identifier to snake case: `audio_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:134:4
[INFO] [stderr]     |
[INFO] [stderr] 134 |             canvas.draw_line(Point::new(px, py), Point::new(i as i32, y));
[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 import: `std::env`
[INFO] [stderr]  --> src/parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/parser.rs:95:7
[INFO] [stderr]    |
[INFO] [stderr] 95 |             'a'...'z' | 'A'...'Z' | '_' => { // Identifier
[INFO] [stderr]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/parser.rs:95:19
[INFO] [stderr]    |
[INFO] [stderr] 95 |             'a'...'z' | 'A'...'Z' | '_' => { // Identifier
[INFO] [stderr]    |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parser.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |             '-' | '0'...'9' | '.' => { // Number
[INFO] [stderr]     |                      ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Input`, `NodeGraph`
[INFO] [stderr]  --> src/main.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::node::{ NodeGraph, Input };
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]  --> src/main.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use self::parser::{ Parser, GraphLoader };
[INFO] [stderr]   |                     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/node.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 |             _ => 0.0
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/parser.rs:422:4
[INFO] [stderr]     |
[INFO] [stderr] 422 |             _ => Value::Nil
[INFO] [stderr]     |             ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec`
[INFO] [stderr]   --> src/main.rs:60:61
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut device = audio.open_playback(None, &desired_spec, |spec| {
[INFO] [stderr]    |                                                                ^^^^ help: consider prefixing with an underscore: `_spec`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:6
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut device = audio.open_playback(None, &desired_spec, |spec| {
[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: private type `node::InputContext<'_, '_>` in public interface (error E0446)
[INFO] [stderr]   --> src/node.rs:34:2
[INFO] [stderr]    |
[INFO] [stderr] 34 |       pub fn sample(self, ctx: InputContext) -> f32 {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 35 | |         match self {
[INFO] [stderr] 36 | |             Input::Value(v) => v,
[INFO] [stderr] 37 | |             Input::Node(id) => ctx.outputs[id],
[INFO] [stderr] ...  |
[INFO] [stderr] 40 | |         }
[INFO] [stderr] 41 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Null`
[INFO] [stderr]   --> src/node.rs:46:2
[INFO] [stderr]    |
[INFO] [stderr] 46 |     Null,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete_node`
[INFO] [stderr]    --> src/node.rs:174:2
[INFO] [stderr]     |
[INFO] [stderr] 174 |     pub fn delete_node(&mut self, id: usize) -> Result<(), &str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prev`
[INFO] [stderr]   --> src/parser.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn prev(&self) -> Option<char> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/parser.rs:41:2
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn peek(&self) -> Option<char> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step_back`
[INFO] [stderr]   --> src/parser.rs:48:2
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn step_back(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `audioSender` should have a snake case name
[INFO] [stderr]   --> src/main.rs:58:7
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (audioSender, rx) = mpsc::channel();
[INFO] [stderr]    |          ^^^^^^^^^^^ help: convert the identifier to snake case: `audio_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `audioReceiver` should have a snake case name
[INFO] [stderr]   --> src/main.rs:59:11
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (cs, audioReceiver) = mpsc::channel();
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: convert the identifier to snake case: `audio_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:134:4
[INFO] [stderr]     |
[INFO] [stderr] 134 |             canvas.draw_line(Point::new(px, py), Point::new(i as i32, y));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 14.02s
[INFO] running `"docker" "inspect" "96ffbe6840e5c0667c9ffcf6982a3d7cee4aa2e8a87faa25bfbc2fa3222faa2b"`
[INFO] running `"docker" "rm" "-f" "96ffbe6840e5c0667c9ffcf6982a3d7cee4aa2e8a87faa25bfbc2fa3222faa2b"`
[INFO] [stdout] 96ffbe6840e5c0667c9ffcf6982a3d7cee4aa2e8a87faa25bfbc2fa3222faa2b