[INFO] cloning repository https://github.com/alaroldai/gis-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alaroldai/gis-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaroldai%2Fgis-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaroldai%2Fgis-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a28060f5885b45ec8d46e1a6d09dadec04bceeb
[INFO] checking alaroldai/gis-algorithms against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falaroldai%2Fgis-algorithms" "/workspace/builds/worker-94/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-94/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alaroldai/gis-algorithms on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alaroldai/gis-algorithms
[INFO] finished tweaking git repo https://github.com/alaroldai/gis-algorithms
[INFO] tweaked toml for git repo https://github.com/alaroldai/gis-algorithms written to /workspace/builds/worker-94/source/Cargo.toml
[INFO] crate git repo https://github.com/alaroldai/gis-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded nalgebra v0.29.0
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[INFO] [stdout] ea508023f2de1408d81ef5260280e3c48f06e70e9643b75d51707f4cf0462242
[INFO] running `Command { std: "docker" "start" "-a" "ea508023f2de1408d81ef5260280e3c48f06e70e9643b75d51707f4cf0462242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea508023f2de1408d81ef5260280e3c48f06e70e9643b75d51707f4cf0462242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea508023f2de1408d81ef5260280e3c48f06e70e9643b75d51707f4cf0462242", kill_on_drop: false }`
[INFO] [stdout] ea508023f2de1408d81ef5260280e3c48f06e70e9643b75d51707f4cf0462242
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9c0512dbd3616a18253b0d38c682f1e721989df8aa7a475dda127c5ae31c00a
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[INFO] [stderr]    Compiling proc-macro2 v1.0.29
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[INFO] [stderr]     Checking gis-algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/graph.rs:317:14
[INFO] [stdout]     |
[INFO] [stdout] 317 |     for i in (0usize..7) {
[INFO] [stdout]     |              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 317 -     for i in (0usize..7) {
[INFO] [stdout] 317 +     for i in 0usize..7 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:314:20
[INFO] [stdout]     |
[INFO] [stdout] 314 |       .filter_map(|i| g.add_node(()))
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eids`
[INFO] [stdout]    --> src/graph.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 |     let eids = &[(0, 1), (0, 2), (1, 3), (1, 4), (2, 5), (2, 6)]
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_eids`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 343 |     for i in 0..7 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     for i in 0..6 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |     for i in 0..6 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:393:9
[INFO] [stdout]     |
[INFO] [stdout] 393 |     for i in 0..4 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:418:9
[INFO] [stdout]     |
[INFO] [stdout] 418 |     for i in 0..7 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:442:9
[INFO] [stdout]     |
[INFO] [stdout] 442 |     for i in 0..6 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:464:9
[INFO] [stdout]     |
[INFO] [stdout] 464 |     for i in 0..6 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     for i in 0..4 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/graph.rs:537:9
[INFO] [stdout]     |
[INFO] [stdout] 537 |     for i in 0..(city_names.len()) {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[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/graph.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 322 |       .into_iter()
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 322 |       .iter()
[INFO] [stdout]     |        ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 321 |     let eids = &IntoIterator::into_iter([(0, 1), (0, 2), (1, 3), (1, 4), (2, 5), (2, 6)])
[INFO] [stdout]     |                 ++++++++++++++++++++++++                                                ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "c9c0512dbd3616a18253b0d38c682f1e721989df8aa7a475dda127c5ae31c00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9c0512dbd3616a18253b0d38c682f1e721989df8aa7a475dda127c5ae31c00a", kill_on_drop: false }`
[INFO] [stdout] c9c0512dbd3616a18253b0d38c682f1e721989df8aa7a475dda127c5ae31c00a