[INFO] fetching crate graphsearch 0.6.0...
[INFO] testing graphsearch-0.6.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate graphsearch 0.6.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate graphsearch 0.6.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graphsearch 0.6.0
[INFO] finished tweaking crates.io crate graphsearch 0.6.0
[INFO] tweaked toml for crates.io crate graphsearch 0.6.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e8adb81647709b04edb337acb876a8bbcdbc9bb978632c9b59ef2b97a0a4b57
[INFO] running `Command { std: "docker" "start" "-a" "3e8adb81647709b04edb337acb876a8bbcdbc9bb978632c9b59ef2b97a0a4b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e8adb81647709b04edb337acb876a8bbcdbc9bb978632c9b59ef2b97a0a4b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8adb81647709b04edb337acb876a8bbcdbc9bb978632c9b59ef2b97a0a4b57", kill_on_drop: false }`
[INFO] [stdout] 3e8adb81647709b04edb337acb876a8bbcdbc9bb978632c9b59ef2b97a0a4b57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1471d3b0e2c34c6a581a0c541d469f03077bdaf716fc14d5a556ecb0260ddae2
[INFO] running `Command { std: "docker" "start" "-a" "1471d3b0e2c34c6a581a0c541d469f03077bdaf716fc14d5a556ecb0260ddae2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling graphsearch v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:299:14
[INFO] [stdout]     |
[INFO] [stdout] 299 |     for i in (0..path.len()-1) {
[INFO] [stdout]     |              ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 299 -     for i in (0..path.len()-1) {
[INFO] [stdout] 299 +     for i in 0..path.len()-1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:320:14
[INFO] [stdout]     |
[INFO] [stdout] 320 |     for i in (0..self.graph.len()) {
[INFO] [stdout]     |              ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 320 -     for i in (0..self.graph.len()) {
[INFO] [stdout] 320 +     for i in 0..self.graph.len() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:352:11
[INFO] [stdout]     |
[INFO] [stdout] 352 |       let mut v: Option<usize>;
[INFO] [stdout]     |           ----^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "1471d3b0e2c34c6a581a0c541d469f03077bdaf716fc14d5a556ecb0260ddae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1471d3b0e2c34c6a581a0c541d469f03077bdaf716fc14d5a556ecb0260ddae2", kill_on_drop: false }`
[INFO] [stdout] 1471d3b0e2c34c6a581a0c541d469f03077bdaf716fc14d5a556ecb0260ddae2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35fc26203c3c9b5852330b1d44c2939f3432af2ec6f62d14f0da6d3ca5477683
[INFO] running `Command { std: "docker" "start" "-a" "35fc26203c3c9b5852330b1d44c2939f3432af2ec6f62d14f0da6d3ca5477683", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:299:14
[INFO] [stdout]     |
[INFO] [stdout] 299 |     for i in (0..path.len()-1) {
[INFO] [stdout]     |              ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 299 -     for i in (0..path.len()-1) {
[INFO] [stdout] 299 +     for i in 0..path.len()-1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:320:14
[INFO] [stdout]     |
[INFO] [stdout] 320 |     for i in (0..self.graph.len()) {
[INFO] [stdout]     |              ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 320 -     for i in (0..self.graph.len()) {
[INFO] [stdout] 320 +     for i in 0..self.graph.len() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling graphsearch v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:352:11
[INFO] [stdout]     |
[INFO] [stdout] 352 |       let mut v: Option<usize>;
[INFO] [stdout]     |           ----^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:299:14
[INFO] [stdout]     |
[INFO] [stdout] 299 |     for i in (0..path.len()-1) {
[INFO] [stdout]     |              ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 299 -     for i in (0..path.len()-1) {
[INFO] [stdout] 299 +     for i in 0..path.len()-1 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:320:14
[INFO] [stdout]     |
[INFO] [stdout] 320 |     for i in (0..self.graph.len()) {
[INFO] [stdout]     |              ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 320 -     for i in (0..self.graph.len()) {
[INFO] [stdout] 320 +     for i in 0..self.graph.len() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:432:16
[INFO] [stdout]     |
[INFO] [stdout] 432 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 432 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 432 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:493:16
[INFO] [stdout]     |
[INFO] [stdout] 493 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 493 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 493 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:556:16
[INFO] [stdout]     |
[INFO] [stdout] 556 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 556 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 556 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:616:16
[INFO] [stdout]     |
[INFO] [stdout] 616 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 616 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 616 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:678:16
[INFO] [stdout]     |
[INFO] [stdout] 678 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 678 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 678 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:738:16
[INFO] [stdout]     |
[INFO] [stdout] 738 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 738 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 738 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:830:16
[INFO] [stdout]     |
[INFO] [stdout] 830 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 830 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout] 830 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:352:11
[INFO] [stdout]     |
[INFO] [stdout] 352 |       let mut v: Option<usize>;
[INFO] [stdout]     |           ----^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "35fc26203c3c9b5852330b1d44c2939f3432af2ec6f62d14f0da6d3ca5477683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35fc26203c3c9b5852330b1d44c2939f3432af2ec6f62d14f0da6d3ca5477683", kill_on_drop: false }`
[INFO] [stdout] 35fc26203c3c9b5852330b1d44c2939f3432af2ec6f62d14f0da6d3ca5477683
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97489e97d34e55e43469565c90b4fbd06989e54138c75388cd4ba5a11414f61e
[INFO] running `Command { std: "docker" "start" "-a" "97489e97d34e55e43469565c90b4fbd06989e54138c75388cd4ba5a11414f61e", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:299:14
[INFO] [stderr]     |
[INFO] [stderr] 299 |     for i in (0..path.len()-1) {
[INFO] [stderr]     |              ^               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 299 -     for i in (0..path.len()-1) {
[INFO] [stderr] 299 +     for i in 0..path.len()-1 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:320:14
[INFO] [stderr]     |
[INFO] [stderr] 320 |     for i in (0..self.graph.len()) {
[INFO] [stderr]     |              ^                   ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 320 -     for i in (0..self.graph.len()) {
[INFO] [stderr] 320 +     for i in 0..self.graph.len() {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:352:11
[INFO] [stderr]     |
[INFO] [stderr] 352 |       let mut v: Option<usize>;
[INFO] [stderr]     |           ----^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `graphsearch` (lib) generated 3 warnings
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:432:16
[INFO] [stderr]     |
[INFO] [stderr] 432 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 432 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 432 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:493:16
[INFO] [stderr]     |
[INFO] [stderr] 493 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 493 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 493 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:556:16
[INFO] [stderr]     |
[INFO] [stderr] 556 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 556 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 556 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:616:16
[INFO] [stderr]     |
[INFO] [stderr] 616 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 616 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 616 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:678:16
[INFO] [stderr]     |
[INFO] [stderr] 678 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 678 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 678 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:738:16
[INFO] [stderr]     |
[INFO] [stderr] 738 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 738 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 738 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:830:16
[INFO] [stderr]     |
[INFO] [stderr] 830 |       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     |                ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 830 -       for i in (0..expected_path.len()) { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr] 830 +       for i in 0..expected_path.len() { assert_eq!(result[i], expected_path[i]); }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `graphsearch` (lib test) generated 10 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/graphsearch-d6b02828d4189dcb)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test breadth_first_search_test ... ok
[INFO] [stdout] test breadth_first_search_using_index_test_no_valid_path ... ok
[INFO] [stdout] test depth_first_search_using_index_test_no_valid_path ... ok
[INFO] [stdout] test dijkstra_using_index_test ... ok
[INFO] [stdout] test dijkstra_using_index_test_no_valid_path ... ok
[INFO] [stdout] test breadth_first_search_test_no_valid_path ... ok
[INFO] [stdout] test search_using_index_test_no_valid_path ... ok
[INFO] [stdout] test depth_first_search_test_no_valid_path ... ok
[INFO] [stdout] test search_test_no_valid_path ... ok
[INFO] [stdout] test search_test ... ok
[INFO] [stdout] test dijkstra_test_no_valid_path ... ok
[INFO] [stdout] test breadth_first_search_using_index_test ... ok
[INFO] [stdout] test search_using_index_test ... ok
[INFO] [stdout] test depth_first_search_using_index_test ... ok
[INFO] [stdout] test depth_first_search_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests graphsearch
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:299:14
[INFO] [stderr]     |
[INFO] [stderr] 299 |     for i in (0..path.len()-1) {
[INFO] [stderr]     |              ^               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 299 -     for i in (0..path.len()-1) {
[INFO] [stderr] 299 +     for i in 0..path.len()-1 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:320:14
[INFO] [stderr]     |
[INFO] [stderr] 320 |     for i in (0..self.graph.len()) {
[INFO] [stderr]     |              ^                   ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 320 -     for i in (0..self.graph.len()) {
[INFO] [stderr] 320 +     for i in 0..self.graph.len() {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stdout] running 2 tests
[INFO] [stderr] 
[INFO] [stdout] test src/lib.rs - Graph<T>::new (line 93) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97489e97d34e55e43469565c90b4fbd06989e54138c75388cd4ba5a11414f61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97489e97d34e55e43469565c90b4fbd06989e54138c75388cd4ba5a11414f61e", kill_on_drop: false }`
[INFO] [stdout] 97489e97d34e55e43469565c90b4fbd06989e54138c75388cd4ba5a11414f61e