[INFO] updating cached repository https://github.com/pelmers/matrixrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cef2e92c3967cad4c1c71439855ea2b0655d262d
[INFO] testing pelmers/matrixrs against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelmers%2Fmatrixrs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pelmers/matrixrs on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pelmers/matrixrs
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/pelmers/matrixrs
[INFO] tweaked toml for git repo https://github.com/pelmers/matrixrs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pelmers/matrixrs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_constructors.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_getters.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_determinant.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_equality.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_unaryops.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_to_string.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_lu_decomp.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_binops.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_constructors.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_getters.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_determinant.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_equality.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_unaryops.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_to_string.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_lu_decomp.rs
[INFO] [stderr] * /workspace/builds/worker-6/source/tests/test_binops.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a294273c706f1ba0b496e9c8ee283f016a562f6e4b6524855d4de7cc4468a6b
[INFO] running `Command { std: "docker" "start" "-a" "5a294273c706f1ba0b496e9c8ee283f016a562f6e4b6524855d4de7cc4468a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a294273c706f1ba0b496e9c8ee283f016a562f6e4b6524855d4de7cc4468a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a294273c706f1ba0b496e9c8ee283f016a562f6e4b6524855d4de7cc4468a6b", kill_on_drop: false }`
[INFO] [stdout] 5a294273c706f1ba0b496e9c8ee283f016a562f6e4b6524855d4de7cc4468a6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6fc4f38ba60a08da1a34477f9b1ace58dcd26029ef1eae6b0650f6ebe3ae4670
[INFO] running `Command { std: "docker" "start" "-a" "6fc4f38ba60a08da1a34477f9b1ace58dcd26029ef1eae6b0650f6ebe3ae4670", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_constructors.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_getters.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_determinant.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_equality.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_unaryops.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_to_string.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_lu_decomp.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_binops.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling num v0.3.0
[INFO] [stderr]    Compiling matrixrs v0.0.1-pre (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:295:22
[INFO] [stdout]     |
[INFO] [stdout] 295 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:315:18
[INFO] [stdout]     |
[INFO] [stdout] 315 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:316:22
[INFO] [stdout]     |
[INFO] [stdout] 316 |             for i in (0..j+1) {
[INFO] [stdout]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:318:26
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 for k in (0..i) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:323:22
[INFO] [stdout]     |
[INFO] [stdout] 323 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:325:26
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 for k in (0..j) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:345:26
[INFO] [stdout]     |
[INFO] [stdout] 345 |                 for i in (0..self.m) {
[INFO] [stdout]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.65s
[INFO] running `Command { std: "docker" "inspect" "6fc4f38ba60a08da1a34477f9b1ace58dcd26029ef1eae6b0650f6ebe3ae4670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc4f38ba60a08da1a34477f9b1ace58dcd26029ef1eae6b0650f6ebe3ae4670", kill_on_drop: false }`
[INFO] [stdout] 6fc4f38ba60a08da1a34477f9b1ace58dcd26029ef1eae6b0650f6ebe3ae4670
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdc624f8178e337dbd3f27081fbb7b3008eef086513c276566c6ed392b4ffca6
[INFO] running `Command { std: "docker" "start" "-a" "bdc624f8178e337dbd3f27081fbb7b3008eef086513c276566c6ed392b4ffca6", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_constructors.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_getters.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_determinant.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_equality.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_unaryops.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_to_string.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_lu_decomp.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_binops.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling matrixrs v0.0.1-pre (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:295:22
[INFO] [stdout]     |
[INFO] [stdout] 295 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:315:18
[INFO] [stdout]     |
[INFO] [stdout] 315 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:316:22
[INFO] [stdout]     |
[INFO] [stdout] 316 |             for i in (0..j+1) {
[INFO] [stdout]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:318:26
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 for k in (0..i) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:323:22
[INFO] [stdout]     |
[INFO] [stdout] 323 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:325:26
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 for k in (0..j) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:345:26
[INFO] [stdout]     |
[INFO] [stdout] 345 |                 for i in (0..self.m) {
[INFO] [stdout]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:293:18
[INFO] [stdout]     |
[INFO] [stdout] 293 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:295:22
[INFO] [stdout]     |
[INFO] [stdout] 295 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:315:18
[INFO] [stdout]     |
[INFO] [stdout] 315 |         for j in (0..self.n) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:316:22
[INFO] [stdout]     |
[INFO] [stdout] 316 |             for i in (0..j+1) {
[INFO] [stdout]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:318:26
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 for k in (0..i) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:323:22
[INFO] [stdout]     |
[INFO] [stdout] 323 |             for i in (j..self.m) {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:325:26
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 for k in (0..j) {
[INFO] [stdout]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/matrixrs/matrix.rs:345:26
[INFO] [stdout]     |
[INFO] [stdout] 345 |                 for i in (0..self.m) {
[INFO] [stdout]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "bdc624f8178e337dbd3f27081fbb7b3008eef086513c276566c6ed392b4ffca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdc624f8178e337dbd3f27081fbb7b3008eef086513c276566c6ed392b4ffca6", kill_on_drop: false }`
[INFO] [stdout] bdc624f8178e337dbd3f27081fbb7b3008eef086513c276566c6ed392b4ffca6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 94e9765393f99aee16d3afd849f1f24583f09fd2c8d3ae9069baad36a8dd2c67
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "94e9765393f99aee16d3afd849f1f24583f09fd2c8d3ae9069baad36a8dd2c67", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_constructors.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_getters.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_determinant.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_equality.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_unaryops.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_to_string.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_lu_decomp.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_binops.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:293:18
[INFO] [stderr]     |
[INFO] [stderr] 293 |         for j in (0..self.n) {
[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 `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:295:22
[INFO] [stderr]     |
[INFO] [stderr] 295 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:315:18
[INFO] [stderr]     |
[INFO] [stderr] 315 |         for j in (0..self.n) {
[INFO] [stderr]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:316:22
[INFO] [stderr]     |
[INFO] [stderr] 316 |             for i in (0..j+1) {
[INFO] [stderr]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:318:26
[INFO] [stderr]     |
[INFO] [stderr] 318 |                 for k in (0..i) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:323:22
[INFO] [stderr]     |
[INFO] [stderr] 323 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:325:26
[INFO] [stderr]     |
[INFO] [stderr] 325 |                 for k in (0..j) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:345:26
[INFO] [stderr]     |
[INFO] [stderr] 345 |                 for i in (0..self.m) {
[INFO] [stderr]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:293:18
[INFO] [stderr]     |
[INFO] [stderr] 293 |         for j in (0..self.n) {
[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 `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:295:22
[INFO] [stderr]     |
[INFO] [stderr] 295 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:315:18
[INFO] [stderr]     |
[INFO] [stderr] 315 |         for j in (0..self.n) {
[INFO] [stderr]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:316:22
[INFO] [stderr]     |
[INFO] [stderr] 316 |             for i in (0..j+1) {
[INFO] [stderr]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:318:26
[INFO] [stderr]     |
[INFO] [stderr] 318 |                 for k in (0..i) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:323:22
[INFO] [stderr]     |
[INFO] [stderr] 323 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:325:26
[INFO] [stderr]     |
[INFO] [stderr] 325 |                 for k in (0..j) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/matrixrs/matrix.rs:345:26
[INFO] [stderr]     |
[INFO] [stderr] 345 |                 for i in (0..self.m) {
[INFO] [stderr]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matrixrs-8aca62b76130bc57
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tests-70b7bae47f5c2424
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test test_determinant::test_det ... ok
[INFO] [stdout] test test_constructors::test_zeros ... ok
[INFO] [stdout] test test_constructors::test_ones ... ok
[INFO] [stdout] test test_lu_decomp::test_lu ... ok
[INFO] [stdout] test test_to_string::test_to_string ... ok
[INFO] [stdout] test test_unaryops::test_neg ... ok
[INFO] [stdout] test test_unaryops::test_not ... ok
[INFO] [stdout] test test_binops::test_bitor ... ok
[INFO] [stdout] test test_binops::test_exp ... ok
[INFO] [stdout] test test_getters::test_index_mut ... ok
[INFO] [stdout] test test_binops::test_mul ... ok
[INFO] [stdout] test test_unaryops::test_sum ... ok
[INFO] [stdout] test test_getters::test_row ... ok
[INFO] [stdout] test test_binops::test_sub ... ok
[INFO] [stdout] test test_getters::test_col ... ok
[INFO] [stdout] test test_constructors::test_from_fn ... ok
[INFO] [stdout] test test_getters::test_index ... ok
[INFO] [stdout] test test_constructors::test_identity ... ok
[INFO] [stdout] test test_equality::test_eq ... ok
[INFO] [stdout] test test_binops::test_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matrixrs
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:293:18
[INFO] [stderr]     |
[INFO] [stderr] 293 |         for j in (0..self.n) {
[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 `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:295:22
[INFO] [stderr]     |
[INFO] [stderr] 295 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:315:18
[INFO] [stderr]     |
[INFO] [stderr] 315 |         for j in (0..self.n) {
[INFO] [stderr]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:316:22
[INFO] [stderr]     |
[INFO] [stderr] 316 |             for i in (0..j+1) {
[INFO] [stderr]     |                      ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:318:26
[INFO] [stderr]     |
[INFO] [stderr] 318 |                 for k in (0..i) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:323:22
[INFO] [stderr]     |
[INFO] [stderr] 323 |             for i in (j..self.m) {
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:325:26
[INFO] [stderr]     |
[INFO] [stderr] 325 |                 for k in (0..j) {
[INFO] [stderr]     |                          ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/matrixrs/matrix.rs:345:26
[INFO] [stderr]     |
[INFO] [stderr] 345 |                 for i in (0..self.m) {
[INFO] [stderr]     |                          ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "94e9765393f99aee16d3afd849f1f24583f09fd2c8d3ae9069baad36a8dd2c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94e9765393f99aee16d3afd849f1f24583f09fd2c8d3ae9069baad36a8dd2c67", kill_on_drop: false }`
[INFO] [stdout] 94e9765393f99aee16d3afd849f1f24583f09fd2c8d3ae9069baad36a8dd2c67