[INFO] cloning repository https://github.com/pelmers/matrixrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pelmers/matrixrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelmers%2Fmatrixrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelmers%2Fmatrixrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cef2e92c3967cad4c1c71439855ea2b0655d262d
[INFO] checking pelmers/matrixrs against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpelmers%2Fmatrixrs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pelmers/matrixrs on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-0/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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-0/source/tests/test_equality.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_unaryops.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_constructors.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_to_string.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_lu_decomp.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_binops.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_determinant.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_getters.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-0/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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-0/source/tests/test_equality.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_unaryops.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_constructors.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_to_string.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_lu_decomp.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_binops.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_determinant.rs
[INFO] [stderr] * /workspace/builds/worker-0/source/tests/test_getters.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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82170922b25d0bb4acd63a1747580b769b0bd0d9242a14604b924ceab9fe5327
[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" "82170922b25d0bb4acd63a1747580b769b0bd0d9242a14604b924ceab9fe5327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82170922b25d0bb4acd63a1747580b769b0bd0d9242a14604b924ceab9fe5327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82170922b25d0bb4acd63a1747580b769b0bd0d9242a14604b924ceab9fe5327", kill_on_drop: false }`
[INFO] [stdout] 82170922b25d0bb4acd63a1747580b769b0bd0d9242a14604b924ceab9fe5327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e29fb2a973c9e9d408e9405bd38790b5863fdb7a9bb6231a12e35c432bd2b6ba
[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" "e29fb2a973c9e9d408e9405bd38790b5863fdb7a9bb6231a12e35c432bd2b6ba", 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_equality.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_unaryops.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_constructors.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] * /opt/rustwide/workdir/tests/test_determinant.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/test_getters.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 v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking 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: 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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.34s
[INFO] running `Command { std: "docker" "inspect" "e29fb2a973c9e9d408e9405bd38790b5863fdb7a9bb6231a12e35c432bd2b6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e29fb2a973c9e9d408e9405bd38790b5863fdb7a9bb6231a12e35c432bd2b6ba", kill_on_drop: false }`
[INFO] [stdout] e29fb2a973c9e9d408e9405bd38790b5863fdb7a9bb6231a12e35c432bd2b6ba