[INFO] cloning repository https://github.com/sdCaramel302812/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdCaramel302812/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsdCaramel302812%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsdCaramel302812%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b8034b85aef7b3444ca35fe44ff4115f580cbef
[INFO] testing sdCaramel302812/rust-practice against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsdCaramel302812%2Frust-practice" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdCaramel302812/rust-practice on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdCaramel302812/rust-practice
[INFO] finished tweaking git repo https://github.com/sdCaramel302812/rust-practice
[INFO] tweaked toml for git repo https://github.com/sdCaramel302812/rust-practice written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/sdCaramel302812/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb0eceec6078db5951888c0e55b5ad06fd5ee8afc557e25b6d8688cb25ea2395
[INFO] running `Command { std: "docker" "start" "-a" "cb0eceec6078db5951888c0e55b5ad06fd5ee8afc557e25b6d8688cb25ea2395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb0eceec6078db5951888c0e55b5ad06fd5ee8afc557e25b6d8688cb25ea2395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb0eceec6078db5951888c0e55b5ad06fd5ee8afc557e25b6d8688cb25ea2395", kill_on_drop: false }`
[INFO] [stdout] cb0eceec6078db5951888c0e55b5ad06fd5ee8afc557e25b6d8688cb25ea2395
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a52af1487861d1f974686a27a5f94fbb5aef82215697142072fc8de65d0a8ec
[INFO] running `Command { std: "docker" "start" "-a" "9a52af1487861d1f974686a27a5f94fbb5aef82215697142072fc8de65d0a8ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> adder/src/lib.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> adder/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]  --> adder/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]  --> adder/src/lib.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bug_can_hold`
[INFO] [stdout]   --> adder/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn bug_can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> adder/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     value: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/grep/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |         if (args.len() != 3) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -         if (args.len() != 3) {
[INFO] [stdout] 27 +         if args.len() != 3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grep::grep_main`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use grep::grep_main;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_type_of`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 2.68s
[INFO] running `Command { std: "docker" "inspect" "9a52af1487861d1f974686a27a5f94fbb5aef82215697142072fc8de65d0a8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a52af1487861d1f974686a27a5f94fbb5aef82215697142072fc8de65d0a8ec", kill_on_drop: false }`
[INFO] [stdout] 9a52af1487861d1f974686a27a5f94fbb5aef82215697142072fc8de65d0a8ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c325daefe30b30a323e5e77fb86ebc338d21e0ac746692159208a1555485dc10
[INFO] running `Command { std: "docker" "start" "-a" "c325daefe30b30a323e5e77fb86ebc338d21e0ac746692159208a1555485dc10", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> adder/src/lib.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> adder/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]  --> adder/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]  --> adder/src/lib.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bug_can_hold`
[INFO] [stdout]   --> adder/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn bug_can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> adder/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     value: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/grep/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |         if (args.len() != 3) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -         if (args.len() != 3) {
[INFO] [stdout] 27 +         if args.len() != 3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grep::grep_main`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use grep::grep_main;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_type_of`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/grep/mod.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |         if (args.len() != 3) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -         if (args.len() != 3) {
[INFO] [stdout] 27 +         if args.len() != 3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grep::grep_main`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use grep::grep_main;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> adder/src/lib.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_type_of`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guess`
[INFO] [stdout]    --> adder/src/lib.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let guess = Guess::new(101);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> adder/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     value: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "c325daefe30b30a323e5e77fb86ebc338d21e0ac746692159208a1555485dc10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c325daefe30b30a323e5e77fb86ebc338d21e0ac746692159208a1555485dc10", kill_on_drop: false }`
[INFO] [stdout] c325daefe30b30a323e5e77fb86ebc338d21e0ac746692159208a1555485dc10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4aa495ef7e98a43d063148b05fceed5bd7d85372731c6402c57159cc4f215ab4
[INFO] running `Command { std: "docker" "start" "-a" "4aa495ef7e98a43d063148b05fceed5bd7d85372731c6402c57159cc4f215ab4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stdout] running 10 tests
[INFO] [stderr]   --> adder/src/lib.rs:35:17
[INFO] [stdout] test tests::another ... ignored
[INFO] [stderr]    |
[INFO] [stdout] test tests::expensive_test ... ignored
[INFO] [stderr] 35 | pub fn greeting(name: &str) -> String {
[INFO] [stdout] test tests::greeting_cotain_name ... ignored
[INFO] [stderr]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::larger_can_hold_smaller_with_bug ... ignored
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] test tests::test_with_result ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::larger_can_hold_smaller ... ok
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stdout] test tests::it_add_two ... ok
[INFO] [stderr]  --> adder/src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     width: u32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]  --> adder/src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     height: u32,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_hold`
[INFO] [stderr]  --> adder/src/lib.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bug_can_hold`
[INFO] [stderr]   --> adder/src/lib.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn bug_can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> adder/src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     value: i32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `guess`
[INFO] [stderr]    --> adder/src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let guess = Guess::new(101);
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> adder/src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     value: i32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `practice` (lib) generated 6 warnings
[INFO] [stderr] warning: `practice` (lib test) generated 3 warnings (1 duplicate)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/grep/mod.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |         if (args.len() != 3) {
[INFO] [stderr]    |            ^               ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 -         if (args.len() != 3) {
[INFO] [stderr] 27 +         if args.len() != 3 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grep::grep_main`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use grep::grep_main;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_type_of`
[INFO] [stderr]   --> src/main.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn print_type_of<T>(_: &T) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `practice` (bin "practice") generated 3 warnings
[INFO] [stderr] warning: `practice` (bin "practice" test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/adder-aeb4f3cde9ba7930)
[INFO] [stdout] test tests::smaller_cannot_hold_larger ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/practice-43a4ac6a349b6f14)
[INFO] [stdout] test tests::guess_should_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 4 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test grep::tests::one_result ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-9631bdc439a4717b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_adds_two ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests adder
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4aa495ef7e98a43d063148b05fceed5bd7d85372731c6402c57159cc4f215ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aa495ef7e98a43d063148b05fceed5bd7d85372731c6402c57159cc4f215ab4", kill_on_drop: false }`
[INFO] [stdout] 4aa495ef7e98a43d063148b05fceed5bd7d85372731c6402c57159cc4f215ab4