[INFO] fetching crate skip-linked-list 0.1.1... [INFO] checking skip-linked-list-0.1.1 against db8f076d2619ce2585b0380dda06e8da25a40da4 for pr-163699 [INFO] extracting crate skip-linked-list 0.1.1 into /workspace/builds/worker-1-tc1/source [INFO] started tweaking crates.io crate skip-linked-list 0.1.1 [INFO] finished tweaking crates.io crate skip-linked-list 0.1.1 [INFO] tweaked toml for crates.io crate skip-linked-list 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate skip-linked-list 0.1.1 on toolchain db8f076d2619ce2585b0380dda06e8da25a40da4 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db8f076d2619ce2585b0380dda06e8da25a40da4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate skip-linked-list 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" "+db8f076d2619ce2585b0380dda06e8da25a40da4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded getrandom v0.1.15 [INFO] [stderr] Downloaded ppv-lite86 v0.2.10 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.69 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.69 [INFO] [stderr] Downloaded oorandom v11.1.3 [INFO] [stderr] Downloaded const_fn v0.4.4 [INFO] [stderr] Downloaded memoffset v0.6.1 [INFO] [stderr] Downloaded hermit-abi v0.1.17 [INFO] [stderr] Downloaded memchr v2.3.4 [INFO] [stderr] Downloaded quote v1.0.8 [INFO] [stderr] Downloaded crossbeam-deque v0.8.0 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.69 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.69 [INFO] [stderr] Downloaded serde v1.0.118 [INFO] [stderr] Downloaded proc-macro2 v1.0.24 [INFO] [stderr] Downloaded crossbeam-epoch v0.9.1 [INFO] [stderr] Downloaded crossbeam-utils v0.8.1 [INFO] [stderr] Downloaded serde_derive v1.0.118 [INFO] [stderr] Downloaded rayon-core v1.9.0 [INFO] [stderr] Downloaded js-sys v0.3.46 [INFO] [stderr] Downloaded crossbeam-channel v0.5.0 [INFO] [stderr] Downloaded serde_json v1.0.60 [INFO] [stderr] Downloaded rayon v1.5.0 [INFO] [stderr] Downloaded wasm-bindgen v0.2.69 [INFO] [stderr] Downloaded syn v1.0.55 [INFO] [stderr] Downloaded regex v1.4.2 [INFO] [stderr] Downloaded regex-syntax v0.6.21 [INFO] [stderr] Downloaded bstr v0.2.14 [INFO] [stderr] Downloaded libc v0.2.80 [INFO] [stderr] Downloaded web-sys v0.3.46 [INFO] [stderr] Downloaded csv v1.1.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723 [INFO] running `Command { std: "docker" "start" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723" "/opt/rustwide/cargo-home/bin/cargo" "+db8f076d2619ce2585b0380dda06e8da25a40da4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723" "/opt/rustwide/cargo-home/bin/cargo" "+db8f076d2619ce2585b0380dda06e8da25a40da4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling serde v1.0.118 [INFO] [stderr] Compiling memoffset v0.6.1 [INFO] [stderr] Compiling const_fn v0.4.4 [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling syn v1.0.55 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling serde_json v1.0.60 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling serde_derive v1.0.118 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking crossbeam-epoch v0.9.1 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking plotters v0.2.15 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking skip-linked-list v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:170:17 [INFO] [stdout] | [INFO] [stdout] 170 | pub fn iter(&self) -> 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] 170 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:179:21 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn iter_mut(&mut self) -> 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] 179 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `pop_front`, `pop_back`, `iter`, `iter_mut`, and `into_iter` are never used [INFO] [stdout] --> src/list.rs:149:12 [INFO] [stdout] | [INFO] [stdout] 42 | impl SkipLinkedList { [INFO] [stdout] | ------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 149 | pub fn pop_front(&mut self) -> T { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 161 | pub fn pop_back(&mut self) -> T { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 170 | pub fn iter(&self) -> Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 179 | pub fn iter_mut(&mut self) -> IterMut { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 188 | pub fn into_iter(self) -> IntoIter { [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 `IntoIter` is never constructed [INFO] [stdout] --> src/list.rs:193:12 [INFO] [stdout] | [INFO] [stdout] 193 | pub struct IntoIter(SkipLinkedList); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IterMut` is never constructed [INFO] [stdout] --> src/list.rs:207:12 [INFO] [stdout] | [INFO] [stdout] 207 | pub struct IterMut<'a, T>(Option<&'a mut Link>); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Iter` is never constructed [INFO] [stdout] --> src/list.rs:224:12 [INFO] [stdout] | [INFO] [stdout] 224 | pub struct Iter<'a, T>(Option<&'a Link>); [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:170:17 [INFO] [stdout] | [INFO] [stdout] 170 | pub fn iter(&self) -> 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] 170 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:179:21 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn iter_mut(&mut self) -> 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] 179 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bstr v0.2.14 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.5 [INFO] [stderr] Checking tinytemplate v1.1.0 [INFO] [stderr] Checking criterion v0.3.3 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:170:17 [INFO] [stdout] | [INFO] [stdout] 170 | pub fn iter(&self) -> 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] 170 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:179:21 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn iter_mut(&mut self) -> 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] 179 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:170:17 [INFO] [stdout] | [INFO] [stdout] 170 | pub fn iter(&self) -> 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] 170 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:179:21 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn iter_mut(&mut self) -> 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] 179 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.74s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723", kill_on_drop: false }` [INFO] [stdout] c2826c83ab7630b63b35a1f68b9218fc102945e8e927d2a021523a62e0a17723