[INFO] fetching crate qip-iterators 1.4.0...
[INFO] checking qip-iterators-1.4.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate qip-iterators 1.4.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate qip-iterators 1.4.0
[INFO] finished tweaking crates.io crate qip-iterators 1.4.0
[INFO] tweaked toml for crates.io crate qip-iterators 1.4.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate qip-iterators 1.4.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 143 packages to latest compatible versions
[INFO] [stderr]       Adding blas v0.22.0 (available: v0.23.0)
[INFO] [stderr]       Adding faer-core v0.8.0 (available: v0.17.1)
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.16.1)
[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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 776a8f8c1b4758da6c4b948579d5c263b48237fd47caa87750b2f6817973c88f
[INFO] running `Command { std: "docker" "start" "-a" "776a8f8c1b4758da6c4b948579d5c263b48237fd47caa87750b2f6817973c88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "776a8f8c1b4758da6c4b948579d5c263b48237fd47caa87750b2f6817973c88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "776a8f8c1b4758da6c4b948579d5c263b48237fd47caa87750b2f6817973c88f", kill_on_drop: false }`
[INFO] [stdout] 776a8f8c1b4758da6c4b948579d5c263b48237fd47caa87750b2f6817973c88f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0ca227f7ab6f24aabe42133eaf551f2e5718a937cc05023ff93e345b97fd4f0a
[INFO] running `Command { std: "docker" "start" "-a" "0ca227f7ab6f24aabe42133eaf551f2e5718a937cc05023ff93e345b97fd4f0a", kill_on_drop: false }`
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[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking qip-iterators v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary qualification
[INFO] [stdout]   --> src/utils.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let leading_zeros = 8 * std::mem::size_of::<usize>() - n;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     unused_qualifications,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]    |
[INFO] [stdout] 21 -     let leading_zeros = 8 * std::mem::size_of::<usize>() - n;
[INFO] [stdout] 21 +     let leading_zeros = 8 * size_of::<usize>() - n;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/iterators/qubit_iterators.rs:23:45
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(row: usize, n: usize, data: &'a [P]) -> MatrixOpIterator<P> {
[INFO] [stdout]    |                                             ^^         ------------------- the same lifetime is hidden here
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             the lifetime is named 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: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(row: usize, n: usize, data: &'a [P]) -> MatrixOpIterator<'a, P> {
[INFO] [stdout]    |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/iterators/qubit_iterators.rs:73:35
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn new(row: usize, data: &'a [Vec<(usize, P)>]) -> SparseMatrixOpIterator<P> {
[INFO] [stdout]    |                                   ^^                       ------------------------- the same lifetime is hidden here
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn new(row: usize, data: &'a [Vec<(usize, P)>]) -> SparseMatrixOpIterator<'a, P> {
[INFO] [stdout]    |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qip-iterators` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0ca227f7ab6f24aabe42133eaf551f2e5718a937cc05023ff93e345b97fd4f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca227f7ab6f24aabe42133eaf551f2e5718a937cc05023ff93e345b97fd4f0a", kill_on_drop: false }`
[INFO] [stdout] 0ca227f7ab6f24aabe42133eaf551f2e5718a937cc05023ff93e345b97fd4f0a