[INFO] fetching crate mudrs-milk 0.0.1...
[INFO] checking mudrs-milk-0.0.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate mudrs-milk 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate mudrs-milk 0.0.1
[INFO] finished tweaking crates.io crate mudrs-milk 0.0.1
[INFO] tweaked toml for crates.io crate mudrs-milk 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mudrs-milk 0.0.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mudrs-milk 0.0.1 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 677cdbde0315bc3f244716bea3df375ab6953dac1e142c17dfe84628ed108273
[INFO] running `Command { std: "docker" "start" "-a" "677cdbde0315bc3f244716bea3df375ab6953dac1e142c17dfe84628ed108273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "677cdbde0315bc3f244716bea3df375ab6953dac1e142c17dfe84628ed108273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "677cdbde0315bc3f244716bea3df375ab6953dac1e142c17dfe84628ed108273", kill_on_drop: false }`
[INFO] [stdout] 677cdbde0315bc3f244716bea3df375ab6953dac1e142c17dfe84628ed108273
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bf6180df0b8d743bbe0f70efdb5fd3259194160bdb3c441f3be2a9d8e9dc624
[INFO] running `Command { std: "docker" "start" "-a" "4bf6180df0b8d743bbe0f70efdb5fd3259194160bdb3c441f3be2a9d8e9dc624", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
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[INFO] [stderr]    Compiling futures-macro v0.3.19
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[INFO] [stderr]    Compiling alacritty_config_derive v0.1.0
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[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
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[INFO] [stderr]    Compiling num_enum_derive v0.5.6
[INFO] [stderr]    Compiling prost v0.9.0
[INFO] [stderr]    Compiling prost-types v0.9.0
[INFO] [stderr]     Checking num_enum v0.5.6
[INFO] [stderr]     Checking tracing-appender v0.2.0
[INFO] [stderr]    Compiling mudrs-milk v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
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[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/widget/scrollback.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     debug,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/widget/scrollback.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     debug,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `KeyBinder` is never constructed
[INFO] [stdout]  --> src/keybinding.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct KeyBinder {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bindings` is never read
[INFO] [stdout]  --> src/keybinding.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct KeyBinder {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     bindings: HashMap<KeyEvent, Box<dyn FnMut()>>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NopWriter` is never constructed
[INFO] [stdout]   --> src/widget/ansi.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct NopWriter;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/widget/input.rs:152:20
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn wrapped(&self, len: usize) -> InputBufferWrapped {
[INFO] [stdout]     |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn wrapped(&self, len: usize) -> InputBufferWrapped<'_> {
[INFO] [stdout]     |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/widget/scrollback.rs:127:19
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn widget(&self) -> ScrollbackBufferWidget {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn widget(&self) -> ScrollbackBufferWidget<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mudrs-milk` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `KeyBinder` is never constructed
[INFO] [stdout]  --> src/keybinding.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct KeyBinder {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bindings` is never read
[INFO] [stdout]  --> src/keybinding.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct KeyBinder {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     bindings: HashMap<KeyEvent, Box<dyn FnMut()>>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NopWriter` is never constructed
[INFO] [stdout]   --> src/widget/ansi.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct NopWriter;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/widget/input.rs:152:20
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn wrapped(&self, len: usize) -> InputBufferWrapped {
[INFO] [stdout]     |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn wrapped(&self, len: usize) -> InputBufferWrapped<'_> {
[INFO] [stdout]     |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/widget/scrollback.rs:127:19
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn widget(&self) -> ScrollbackBufferWidget {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn widget(&self) -> ScrollbackBufferWidget<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mudrs-milk` (lib) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4bf6180df0b8d743bbe0f70efdb5fd3259194160bdb3c441f3be2a9d8e9dc624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf6180df0b8d743bbe0f70efdb5fd3259194160bdb3c441f3be2a9d8e9dc624", kill_on_drop: false }`
[INFO] [stdout] 4bf6180df0b8d743bbe0f70efdb5fd3259194160bdb3c441f3be2a9d8e9dc624
