[INFO] cloning repository https://github.com/sxxrfx/channels [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sxxrfx/channels" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 40b354a8790667ab1cf91a6a9b8ccb15675bb1e8 [INFO] checking sxxrfx/channels against master#453ceafce32ef8108c604bca5e165ab41d3d6d8c for pr-124187 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sxxrfx/channels on toolchain 453ceafce32ef8108c604bca5e165ab41d3d6d8c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+453ceafce32ef8108c604bca5e165ab41d3d6d8c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sxxrfx/channels [INFO] finished tweaking git repo https://github.com/sxxrfx/channels [INFO] tweaked toml for git repo https://github.com/sxxrfx/channels written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/sxxrfx/channels already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+453ceafce32ef8108c604bca5e165ab41d3d6d8c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking sxxrfx/channels against try#773c42f0166e62a538b8fa36161b0c6df69a9640 for pr-124187 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sxxrfx/channels on toolchain 773c42f0166e62a538b8fa36161b0c6df69a9640 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sxxrfx/channels [INFO] finished tweaking git repo https://github.com/sxxrfx/channels [INFO] tweaked toml for git repo https://github.com/sxxrfx/channels written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/sxxrfx/channels already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking sxxrfx/channels against try#773c42f0166e62a538b8fa36161b0c6df69a9640 for pr-124187 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxxrfx%2Fchannels" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sxxrfx/channels on toolchain 773c42f0166e62a538b8fa36161b0c6df69a9640 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sxxrfx/channels [INFO] finished tweaking git repo https://github.com/sxxrfx/channels [INFO] tweaked toml for git repo https://github.com/sxxrfx/channels written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/sxxrfx/channels already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a1ff690ba6882df93bed6acd5edf7cf9f3d3dcd0623b50b94df6a3afc74b86a4 [INFO] running `Command { std: "docker" "start" "-a" "a1ff690ba6882df93bed6acd5edf7cf9f3d3dcd0623b50b94df6a3afc74b86a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a1ff690ba6882df93bed6acd5edf7cf9f3d3dcd0623b50b94df6a3afc74b86a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1ff690ba6882df93bed6acd5edf7cf9f3d3dcd0623b50b94df6a3afc74b86a4", kill_on_drop: false }` [INFO] [stdout] a1ff690ba6882df93bed6acd5edf7cf9f3d3dcd0623b50b94df6a3afc74b86a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+773c42f0166e62a538b8fa36161b0c6df69a9640" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 76b2ebe378fec500428c6ee18de30504d64824c7b2011d786b01aa108ec8e12b [INFO] running `Command { std: "docker" "start" "-a" "76b2ebe378fec500428c6ee18de30504d64824c7b2011d786b01aa108ec8e12b", kill_on_drop: false }` [INFO] [stderr] Checking channels v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `Sender` is never constructed [INFO] [stdout] --> src/blocking_channel.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | pub struct Sender<'a, T> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Receiver` is never constructed [INFO] [stdout] --> src/blocking_channel.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct Receiver<'a, T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `split` are never used [INFO] [stdout] --> src/blocking_channel.rs:27:18 [INFO] [stdout] | [INFO] [stdout] 26 | impl Channel { [INFO] [stdout] | ------------------ associated items in this implementation [INFO] [stdout] 27 | pub const fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 34 | pub fn split<'a>(&'a mut self) -> (Sender<'a, T>, Receiver<'a, T>) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `send` is never used [INFO] [stdout] --> src/blocking_channel.rs:50:12 [INFO] [stdout] | [INFO] [stdout] 49 | impl Sender<'_, T> { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 50 | pub fn send(self, message: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_ready` and `receive` are never used [INFO] [stdout] --> src/blocking_channel.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 57 | impl Receiver<'_, T> { [INFO] [stdout] | ----------------------- methods in this implementation [INFO] [stdout] 58 | pub fn is_ready(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 61 | pub fn receive(self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Sender` is never constructed [INFO] [stdout] --> src/borrow_sender_receiver_channel.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Sender<'a, T> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Receiver` is never constructed [INFO] [stdout] --> src/borrow_sender_receiver_channel.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub struct Receiver<'a, T> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `split` are never used [INFO] [stdout] --> src/borrow_sender_receiver_channel.rs:23:18 [INFO] [stdout] | [INFO] [stdout] 22 | impl Channel { [INFO] [stdout] | ------------------ associated items in this implementation [INFO] [stdout] 23 | pub const fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 30 | pub fn split<'a>(&'a mut self) -> (Sender<'a, T>, Receiver<'a, T>) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `send` is never used [INFO] [stdout] --> src/borrow_sender_receiver_channel.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 36 | impl Sender<'_, T> { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 37 | pub fn send(self, message: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_ready` and `receive` are never used [INFO] [stdout] --> src/borrow_sender_receiver_channel.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 43 | impl Receiver<'_, T> { [INFO] [stdout] | ----------------------- methods in this implementation [INFO] [stdout] 44 | pub fn is_ready(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | pub fn receive(self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Channel` is never constructed [INFO] [stdout] --> src/mutex_channel.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Channel { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `send`, and `receive` are never used [INFO] [stdout] --> src/mutex_channel.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 11 | impl Channel { [INFO] [stdout] | ------------------ associated items in this implementation [INFO] [stdout] 12 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 18 | pub fn send(&self, message: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | pub fn receive(&self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Sender` is never constructed [INFO] [stdout] --> src/sender_receiver_channel.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct Sender { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Receiver` is never constructed [INFO] [stdout] --> src/sender_receiver_channel.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct Receiver { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Channel` is never constructed [INFO] [stdout] --> src/sender_receiver_channel.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct Channel { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `channel` is never used [INFO] [stdout] --> src/sender_receiver_channel.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | pub fn channel() -> (Sender, Receiver) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `send` is never used [INFO] [stdout] --> src/sender_receiver_channel.rs:34:12 [INFO] [stdout] | [INFO] [stdout] 33 | impl Sender { [INFO] [stdout] | ----------------- method in this implementation [INFO] [stdout] 34 | pub fn send(self, message: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_ready` and `receive` are never used [INFO] [stdout] --> src/sender_receiver_channel.rs:42:12 [INFO] [stdout] | [INFO] [stdout] 41 | impl Receiver { [INFO] [stdout] | ------------------- methods in this implementation [INFO] [stdout] 42 | pub fn is_ready(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 46 | pub fn receive(self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `is_ready` is never used [INFO] [stdout] --> src/blocking_channel.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 57 | impl Receiver<'_, T> { [INFO] [stdout] | ----------------------- method in this implementation [INFO] [stdout] 58 | pub fn is_ready(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Channel` is never constructed [INFO] [stdout] --> src/mutex_channel.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Channel { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `send`, and `receive` are never used [INFO] [stdout] --> src/mutex_channel.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 11 | impl Channel { [INFO] [stdout] | ------------------ associated items in this implementation [INFO] [stdout] 12 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 18 | pub fn send(&self, message: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | pub fn receive(&self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] running `Command { std: "docker" "inspect" "76b2ebe378fec500428c6ee18de30504d64824c7b2011d786b01aa108ec8e12b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "76b2ebe378fec500428c6ee18de30504d64824c7b2011d786b01aa108ec8e12b", kill_on_drop: false }` [INFO] [stdout] 76b2ebe378fec500428c6ee18de30504d64824c7b2011d786b01aa108ec8e12b