[INFO] fetching crate chunked 0.1.1... [INFO] checking chunked-0.1.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1 [INFO] extracting crate chunked 0.1.1 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate chunked 0.1.1 [INFO] finished tweaking crates.io crate chunked 0.1.1 [INFO] tweaked toml for crates.io crate chunked 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate chunked 0.1.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate chunked 0.1.1 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded async-trait v0.1.50 [INFO] [stderr] Downloaded crossbeam-queue v0.3.1 [INFO] [stderr] Downloaded tokio v1.5.0 [INFO] [stderr] Downloaded syn v1.0.72 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0d31e014c544b56d0af61e5d0d827501a4b58f6a144a8e438113a483263e63a3 [INFO] running `Command { std: "docker" "start" "-a" "0d31e014c544b56d0af61e5d0d827501a4b58f6a144a8e438113a483263e63a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0d31e014c544b56d0af61e5d0d827501a4b58f6a144a8e438113a483263e63a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0d31e014c544b56d0af61e5d0d827501a4b58f6a144a8e438113a483263e63a3", kill_on_drop: false }` [INFO] [stdout] 0d31e014c544b56d0af61e5d0d827501a4b58f6a144a8e438113a483263e63a3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ccbfd8cd9feaaab8f20990feca37427878c3166985dfc03d836b34ad04263dde [INFO] running `Command { std: "docker" "start" "-a" "ccbfd8cd9feaaab8f20990feca37427878c3166985dfc03d836b34ad04263dde", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking futures-core v0.3.14 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Checking futures-sink v0.3.14 [INFO] [stderr] Checking futures-channel v0.3.14 [INFO] [stderr] Checking futures-io v0.3.14 [INFO] [stderr] Checking futures-task v0.3.14 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.4 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Checking slab v0.4.3 [INFO] [stderr] Compiling tokio v1.5.0 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling async-trait v0.1.50 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking crossbeam-epoch v0.9.4 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking crossbeam-queue v0.3.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Compiling futures-macro v0.3.14 [INFO] [stderr] Checking futures-util v0.3.14 [INFO] [stderr] Checking futures-executor v0.3.14 [INFO] [stderr] Checking futures v0.3.14 [INFO] [stderr] Checking chunked v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/component.rs:241:18 [INFO] [stdout] | [INFO] [stdout] 241 | struct A(u8); [INFO] [stdout] | - ^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `A` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/component_data.rs:242:18 [INFO] [stdout] | [INFO] [stdout] 242 | struct A(u8); [INFO] [stdout] | - ^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `A` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/component_data.rs:246:18 [INFO] [stdout] | [INFO] [stdout] 246 | struct B(u8); [INFO] [stdout] | - ^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `B` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/component.rs:46:25 [INFO] [stdout] | [INFO] [stdout] 46 | let mut r = COMPONENT_REGISTRY.write().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/component.rs:57:21 [INFO] [stdout] | [INFO] [stdout] 57 | let r = COMPONENT_REGISTRY.read().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:35:15 [INFO] [stdout] | [INFO] [stdout] 35 | fn as_ref(&self) -> ComponentSliceSet { [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] 35 | fn as_ref(&self) -> ComponentSliceSet<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:142:36 [INFO] [stdout] | [INFO] [stdout] 142 | pub fn ensure(component_types: &mut Vec) -> ComponentSliceSet { [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] 142 | pub fn ensure(component_types: &mut Vec) -> ComponentSliceSet<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:149:44 [INFO] [stdout] | [INFO] [stdout] 149 | pub fn try_from_slice(component_types: &[ComponentTypeID]) -> Option { [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] 149 | pub fn try_from_slice(component_types: &[ComponentTypeID]) -> Option> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/chunk.rs:98:35 [INFO] [stdout] | [INFO] [stdout] 98 | pub fn split_by_component_mut(&mut self) -> ChunkSplitter { [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] 98 | pub fn split_by_component_mut(&mut self) -> ChunkSplitter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/chunk.rs:431:23 [INFO] [stdout] | [INFO] [stdout] 431 | pub fn new(chunk: &mut Chunk) -> ChunkSplitter { [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] 431 | pub fn new(chunk: &mut Chunk) -> ChunkSplitter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/system.rs:72:19 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn update(&mut self) -> BoxFuture<()> { [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] 72 | pub fn update(&mut self) -> BoxFuture<'_, ()> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/component.rs:46:25 [INFO] [stdout] | [INFO] [stdout] 46 | let mut r = COMPONENT_REGISTRY.write().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/component.rs:57:21 [INFO] [stdout] | [INFO] [stdout] 57 | let r = COMPONENT_REGISTRY.read().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:35:15 [INFO] [stdout] | [INFO] [stdout] 35 | fn as_ref(&self) -> ComponentSliceSet { [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] 35 | fn as_ref(&self) -> ComponentSliceSet<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:142:36 [INFO] [stdout] | [INFO] [stdout] 142 | pub fn ensure(component_types: &mut Vec) -> ComponentSliceSet { [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] 142 | pub fn ensure(component_types: &mut Vec) -> ComponentSliceSet<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/archetype.rs:149:44 [INFO] [stdout] | [INFO] [stdout] 149 | pub fn try_from_slice(component_types: &[ComponentTypeID]) -> Option { [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] 149 | pub fn try_from_slice(component_types: &[ComponentTypeID]) -> Option> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/chunk.rs:98:35 [INFO] [stdout] | [INFO] [stdout] 98 | pub fn split_by_component_mut(&mut self) -> ChunkSplitter { [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] 98 | pub fn split_by_component_mut(&mut self) -> ChunkSplitter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/chunk.rs:431:23 [INFO] [stdout] | [INFO] [stdout] 431 | pub fn new(chunk: &mut Chunk) -> ChunkSplitter { [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] 431 | pub fn new(chunk: &mut Chunk) -> ChunkSplitter<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/system.rs:72:19 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn update(&mut self) -> BoxFuture<()> { [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] 72 | pub fn update(&mut self) -> BoxFuture<'_, ()> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/example.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MyComponent(i32); [INFO] [stdout] | ----------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MyComponent` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/example.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MyComponent(i32); [INFO] [stdout] | ----------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MyComponent` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/stress.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MyComponent(i32); [INFO] [stdout] | ----------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MyComponent` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/stress.rs:6:24 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MyComponent(i32); [INFO] [stdout] | ----------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `MyComponent` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.32s [INFO] running `Command { std: "docker" "inspect" "ccbfd8cd9feaaab8f20990feca37427878c3166985dfc03d836b34ad04263dde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ccbfd8cd9feaaab8f20990feca37427878c3166985dfc03d836b34ad04263dde", kill_on_drop: false }` [INFO] [stdout] ccbfd8cd9feaaab8f20990feca37427878c3166985dfc03d836b34ad04263dde