[INFO] fetching crate letter-sequence 2.1.0... [INFO] checking letter-sequence-2.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1 [INFO] extracting crate letter-sequence 2.1.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate letter-sequence 2.1.0 [INFO] finished tweaking crates.io crate letter-sequence 2.1.0 [INFO] tweaked toml for crates.io crate letter-sequence 2.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate letter-sequence 2.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate letter-sequence 2.1.0 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 397c3d3c9b94cbe1c8b14f330b582ece64cb5879dc08d3a5109b7243d9d7af13 [INFO] running `Command { std: "docker" "start" "-a" "397c3d3c9b94cbe1c8b14f330b582ece64cb5879dc08d3a5109b7243d9d7af13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "397c3d3c9b94cbe1c8b14f330b582ece64cb5879dc08d3a5109b7243d9d7af13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "397c3d3c9b94cbe1c8b14f330b582ece64cb5879dc08d3a5109b7243d9d7af13", kill_on_drop: false }` [INFO] [stdout] 397c3d3c9b94cbe1c8b14f330b582ece64cb5879dc08d3a5109b7243d9d7af13 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 51558daa70313a2f6a4286dffbdd1590371d3a16337119c629f332d72f7340bd [INFO] running `Command { std: "docker" "start" "-a" "51558daa70313a2f6a4286dffbdd1590371d3a16337119c629f332d72f7340bd", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.0 [INFO] [stderr] Compiling syn v1.0.96 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling quote v1.0.18 [INFO] [stderr] Compiling darling_core v0.14.1 [INFO] [stderr] Compiling thiserror-impl v1.0.31 [INFO] [stderr] Checking thiserror v1.0.31 [INFO] [stderr] Compiling darling_macro v0.14.1 [INFO] [stderr] Compiling darling v0.14.1 [INFO] [stderr] Compiling derive_builder_core v0.11.2 [INFO] [stderr] Compiling derive_builder_macro v0.11.2 [INFO] [stderr] Checking derive_builder v0.11.2 [INFO] [stderr] Checking letter-sequence v2.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: associated function `new_unchecked` is never used [INFO] [stdout] --> src/sequence.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 80 | impl Sequence { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 83 | fn new_unchecked(inner: u64) -> Self { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:55:19 [INFO] [stdout] | [INFO] [stdout] 55 | pub fn sequences(&self) -> std::slice::Iter { [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] 55 | pub fn sequences(&self) -> std::slice::Iter<'_, Sequence> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:59:23 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn sequences_mut(&mut self) -> std::slice::IterMut { [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] 59 | pub fn sequences_mut(&mut self) -> std::slice::IterMut<'_, Sequence> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:201:18 [INFO] [stdout] | [INFO] [stdout] 201 | pub fn elements(&self) -> std::slice::Iter { [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] 201 | pub fn elements(&self) -> std::slice::Iter<'_, Element> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `max_render_capacity` is never used [INFO] [stdout] --> src/sequence/builder.rs:313:5 [INFO] [stdout] | [INFO] [stdout] 313 | fn max_render_capacity() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `rollover` is never used [INFO] [stdout] --> src/sequence/builder.rs:379:5 [INFO] [stdout] | [INFO] [stdout] 379 | fn rollover() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:55:19 [INFO] [stdout] | [INFO] [stdout] 55 | pub fn sequences(&self) -> std::slice::Iter { [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] 55 | pub fn sequences(&self) -> std::slice::Iter<'_, Sequence> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:59:23 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn sequences_mut(&mut self) -> std::slice::IterMut { [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] 59 | pub fn sequences_mut(&mut self) -> std::slice::IterMut<'_, Sequence> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/sequence/combined.rs:201:18 [INFO] [stdout] | [INFO] [stdout] 201 | pub fn elements(&self) -> std::slice::Iter { [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] 201 | pub fn elements(&self) -> std::slice::Iter<'_, Element> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> src/main.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 8 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> src/main.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 8 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.60s [INFO] running `Command { std: "docker" "inspect" "51558daa70313a2f6a4286dffbdd1590371d3a16337119c629f332d72f7340bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51558daa70313a2f6a4286dffbdd1590371d3a16337119c629f332d72f7340bd", kill_on_drop: false }` [INFO] [stdout] 51558daa70313a2f6a4286dffbdd1590371d3a16337119c629f332d72f7340bd