[INFO] fetching crate matrixlab 0.1.5... [INFO] checking matrixlab-0.1.5 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1 [INFO] extracting crate matrixlab 0.1.5 into /workspace/builds/worker-7-tc1/source [INFO] started tweaking crates.io crate matrixlab 0.1.5 [INFO] finished tweaking crates.io crate matrixlab 0.1.5 [INFO] tweaked toml for crates.io crate matrixlab 0.1.5 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate matrixlab 0.1.5 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 84 packages to latest compatible versions [INFO] [stderr] Adding proptest v0.9.6 (available: v1.11.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rusty-fork v0.2.2 [INFO] [stderr] Downloaded proptest v0.9.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5689f4cf306aa482d05e83afab5f1578ac3d97345612d5cfddca2320159e8abf [INFO] running `Command { std: "docker" "start" "-a" "5689f4cf306aa482d05e83afab5f1578ac3d97345612d5cfddca2320159e8abf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5689f4cf306aa482d05e83afab5f1578ac3d97345612d5cfddca2320159e8abf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5689f4cf306aa482d05e83afab5f1578ac3d97345612d5cfddca2320159e8abf", kill_on_drop: false }` [INFO] [stdout] 5689f4cf306aa482d05e83afab5f1578ac3d97345612d5cfddca2320159e8abf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aa7b2409b3cbffc7592d62265085e9547f616902d738baa071ffcb19160386fd [INFO] running `Command { std: "docker" "start" "-a" "aa7b2409b3cbffc7592d62265085e9547f616902d738baa071ffcb19160386fd", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Checking either v1.15.0 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking getrandom v0.4.2 [INFO] [stderr] Checking wait-timeout v0.2.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking tempfile v3.27.0 [INFO] [stderr] Checking rusty-fork v0.2.2 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Checking crossbeam-deque v0.8.6 [INFO] [stderr] Checking proptest v0.9.6 [INFO] [stderr] Checking rayon v1.11.0 [INFO] [stderr] Checking matrixlab v0.1.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/matrix/dense.rs:157:100 [INFO] [stdout] | [INFO] [stdout] 157 | let r = q_transpose.safe_mul(self).expect("Error in least squares, multiplication failed");; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> src/matrix/dense.rs:105:21 [INFO] [stdout] | [INFO] [stdout] 105 | .into_iter() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 105 - .into_iter() [INFO] [stdout] 105 + .iter() [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 104 - || [Default::default()] [INFO] [stdout] 105 - .into_iter() [INFO] [stdout] 104 + || IntoIterator::into_iter([Default::default()]) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/matrix/sparse.rs:252:21 [INFO] [stdout] | [INFO] [stdout] 252 | pub fn elements(&self) -> ElementsIter { [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] 252 | pub fn elements(&self) -> ElementsIter<'_, A> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/matrix/sparse.rs:257:25 [INFO] [stdout] | [INFO] [stdout] 257 | pub fn all_elements(&self) -> MatrixIter { [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] 257 | pub fn all_elements(&self) -> MatrixIter<'_, A> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> src/matrix/sparse.rs:406:43 [INFO] [stdout] | [INFO] [stdout] 406 | let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 406 - let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] 406 + let mut x: Vector = [0.0f64].iter().cycle() [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 406 - let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] 406 + let mut x: Vector = IntoIterator::into_iter([0.0f64]).cycle() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/matrix/dense.rs:157:100 [INFO] [stdout] | [INFO] [stdout] 157 | let r = q_transpose.safe_mul(self).expect("Error in least squares, multiplication failed");; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> src/matrix/dense.rs:105:21 [INFO] [stdout] | [INFO] [stdout] 105 | .into_iter() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 105 - .into_iter() [INFO] [stdout] 105 + .iter() [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 104 - || [Default::default()] [INFO] [stdout] 105 - .into_iter() [INFO] [stdout] 104 + || IntoIterator::into_iter([Default::default()]) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/matrix/sparse.rs:252:21 [INFO] [stdout] | [INFO] [stdout] 252 | pub fn elements(&self) -> ElementsIter { [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] 252 | pub fn elements(&self) -> ElementsIter<'_, A> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/matrix/sparse.rs:257:25 [INFO] [stdout] | [INFO] [stdout] 257 | pub fn all_elements(&self) -> MatrixIter { [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] 257 | pub fn all_elements(&self) -> MatrixIter<'_, A> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021 [INFO] [stdout] --> src/matrix/sparse.rs:406:43 [INFO] [stdout] | [INFO] [stdout] 406 | let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 406 - let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] 406 + let mut x: Vector = [0.0f64].iter().cycle() [INFO] [stdout] | [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 406 - let mut x: Vector = [0.0f64].into_iter().cycle() [INFO] [stdout] 406 + let mut x: Vector = IntoIterator::into_iter([0.0f64]).cycle() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.90s [INFO] running `Command { std: "docker" "inspect" "aa7b2409b3cbffc7592d62265085e9547f616902d738baa071ffcb19160386fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa7b2409b3cbffc7592d62265085e9547f616902d738baa071ffcb19160386fd", kill_on_drop: false }` [INFO] [stdout] aa7b2409b3cbffc7592d62265085e9547f616902d738baa071ffcb19160386fd