[INFO] updating cached repository dylanede/constrained
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dylanede/constrained
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dylanede/constrained" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/dylanede/constrained"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/dylanede/constrained'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dylanede/constrained" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/dylanede/constrained"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/dylanede/constrained'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3dfd78ebf46b8a5e03e8f1ef803506c07a2b15d
[INFO] sha for GitHub repo dylanede/constrained: d3dfd78ebf46b8a5e03e8f1ef803506c07a2b15d
[INFO] validating manifest of dylanede/constrained on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dylanede/constrained on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dylanede/constrained
[INFO] finished frobbing dylanede/constrained
[INFO] frobbed toml for dylanede/constrained written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/dylanede/constrained/Cargo.toml
[INFO] started frobbing dylanede/constrained
[INFO] finished frobbing dylanede/constrained
[INFO] frobbed toml for dylanede/constrained written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/dylanede/constrained/Cargo.toml
[INFO] crate dylanede/constrained already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/dylanede/constrained/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dylanede/constrained against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-5/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/dylanede/constrained:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a5e23ab27523567f44eff631f332c3aeaa2f8d3da12305d76a5181a000fb1be2
[INFO] running `"docker" "start" "-a" "a5e23ab27523567f44eff631f332c3aeaa2f8d3da12305d76a5181a000fb1be2"`
[INFO] [stderr]     Checking dense_mats v0.4.0
[INFO] [stderr]     Checking sprs v0.3.3
[INFO] [stderr]     Checking constrained v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:304:35
[INFO] [stderr]     |
[INFO] [stderr] 304 |     let mut lambda = N::one().max((obvalue.abs() / N::from(n).unwrap().sqrt().sqrt()));
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:304:35
[INFO] [stderr]     |
[INFO] [stderr] 304 |     let mut lambda = N::one().max((obvalue.abs() / N::from(n).unwrap().sqrt().sqrt()));
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sprs::sparse::compressed::SpMatView`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use sprs::sparse::compressed::SpMatView;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `One`
[INFO] [stderr]   --> src/lib.rs:26:11
[INFO] [stderr]    |
[INFO] [stderr] 26 | use num::{One, Zero, Float};
[INFO] [stderr]    |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sprs::sparse::compressed::SpMatView`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use sprs::sparse::compressed::SpMatView;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `One`
[INFO] [stderr]   --> src/lib.rs:26:11
[INFO] [stderr]    |
[INFO] [stderr] 26 | use num::{One, Zero, Float};
[INFO] [stderr]    |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `lower` is never read
[INFO] [stderr]    --> src/lib.rs:380:17
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 lower = zhis[iter];
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `lower` is never read
[INFO] [stderr]    --> src/lib.rs:380:17
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 lower = zhis[iter];
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_iter`
[INFO] [stderr]    --> src/lib.rs:128:1
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn from_iter<N: Copy, I: Iterator<Item=(usize, N)>>(itr: I, len: Option<usize>) -> CsVecOwned<N> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_iter`
[INFO] [stderr]    --> src/lib.rs:128:1
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn from_iter<N: Copy, I: Iterator<Item=(usize, N)>>(itr: I, len: Option<usize>) -> CsVecOwned<N> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.28s
[INFO] running `"docker" "inspect" "a5e23ab27523567f44eff631f332c3aeaa2f8d3da12305d76a5181a000fb1be2"`
[INFO] running `"docker" "rm" "-f" "a5e23ab27523567f44eff631f332c3aeaa2f8d3da12305d76a5181a000fb1be2"`
[INFO] [stdout] a5e23ab27523567f44eff631f332c3aeaa2f8d3da12305d76a5181a000fb1be2