[INFO] cloning repository https://github.com/Abhishek8394/rust-tut-closures [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Abhishek8394/rust-tut-closures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3ba5062402616d4cfeb1cc934e9b2f32acb8eda8 [INFO] testing Abhishek8394/rust-tut-closures against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbhishek8394%2Frust-tut-closures" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Abhishek8394/rust-tut-closures on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Abhishek8394/rust-tut-closures [INFO] finished tweaking git repo https://github.com/Abhishek8394/rust-tut-closures [INFO] tweaked toml for git repo https://github.com/Abhishek8394/rust-tut-closures written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/Abhishek8394/rust-tut-closures already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 13a5e6aa9a30b964ca02b4af80d84fc74988f3b6441645ecb0bb717922a0bad3 [INFO] running `Command { std: "docker" "start" "-a" "13a5e6aa9a30b964ca02b4af80d84fc74988f3b6441645ecb0bb717922a0bad3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "13a5e6aa9a30b964ca02b4af80d84fc74988f3b6441645ecb0bb717922a0bad3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13a5e6aa9a30b964ca02b4af80d84fc74988f3b6441645ecb0bb717922a0bad3", kill_on_drop: false }` [INFO] [stdout] 13a5e6aa9a30b964ca02b4af80d84fc74988f3b6441645ecb0bb717922a0bad3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] add3dd08ad013b0f63561776eeab11f7fc70de07a4dd1cd860c2e3a7e4680f5a [INFO] running `Command { std: "docker" "start" "-a" "add3dd08ad013b0f63561776eeab11f7fc70de07a4dd1cd860c2e3a7e4680f5a", kill_on_drop: false }` [INFO] [stderr] Compiling closures v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `foo` [INFO] [stdout] --> src/main.rs:117:9 [INFO] [stdout] | [INFO] [stdout] 117 | let foo = x(String::from("foo")); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_foo` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `simulated_expensive_calculation` [INFO] [stdout] --> src/main.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/main.rs:92:8 [INFO] [stdout] | [INFO] [stdout] 92 | fn new() -> Counter{ [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `shoes_in_my_size` [INFO] [stdout] --> src/main.rs:111:4 [INFO] [stdout] | [INFO] [stdout] 111 | fn shoes_in_my_size(shoes: Vec, size: u32) -> Vec{ [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.93s [INFO] running `Command { std: "docker" "inspect" "add3dd08ad013b0f63561776eeab11f7fc70de07a4dd1cd860c2e3a7e4680f5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "add3dd08ad013b0f63561776eeab11f7fc70de07a4dd1cd860c2e3a7e4680f5a", kill_on_drop: false }` [INFO] [stdout] add3dd08ad013b0f63561776eeab11f7fc70de07a4dd1cd860c2e3a7e4680f5a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e5c18e70b627078b44982a2fb35d2cb7819fa8bebf5318d5dd9a5dc4b1bc4eba [INFO] running `Command { std: "docker" "start" "-a" "e5c18e70b627078b44982a2fb35d2cb7819fa8bebf5318d5dd9a5dc4b1bc4eba", kill_on_drop: false }` [INFO] [stderr] Compiling closures v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `foo` [INFO] [stdout] --> src/main.rs:117:9 [INFO] [stdout] | [INFO] [stdout] 117 | let foo = x(String::from("foo")); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_foo` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/main.rs:143:13 [INFO] [stdout] | [INFO] [stdout] 143 | let v1 = cache.value(4); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/main.rs:151:13 [INFO] [stdout] | [INFO] [stdout] 151 | let v1 = cache.value("four"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:191:13 [INFO] [stdout] | [INFO] [stdout] 191 | let mut counter = Counter::new(); [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: function is never used: `simulated_expensive_calculation` [INFO] [stdout] --> src/main.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.98s [INFO] running `Command { std: "docker" "inspect" "e5c18e70b627078b44982a2fb35d2cb7819fa8bebf5318d5dd9a5dc4b1bc4eba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5c18e70b627078b44982a2fb35d2cb7819fa8bebf5318d5dd9a5dc4b1bc4eba", kill_on_drop: false }` [INFO] [stdout] e5c18e70b627078b44982a2fb35d2cb7819fa8bebf5318d5dd9a5dc4b1bc4eba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 46d39cab9b0c44ed027dc67c6f50ac12382f51ab69649703c45fb19ee608d31f [INFO] running `Command { std: "docker" "start" "-a" "46d39cab9b0c44ed027dc67c6f50ac12382f51ab69649703c45fb19ee608d31f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `foo` [INFO] [stderr] --> src/main.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | let foo = x(String::from("foo")); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_foo` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:143:13 [INFO] [stderr] | [INFO] [stderr] 143 | let v1 = cache.value(4); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:151:13 [INFO] [stderr] | [INFO] [stderr] 151 | let v1 = cache.value("four"); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:191:13 [INFO] [stderr] | [INFO] [stderr] 191 | let mut counter = Counter::new(); [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: function is never used: `simulated_expensive_calculation` [INFO] [stderr] --> src/main.rs:43:4 [INFO] [stderr] | [INFO] [stderr] 43 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `closures` (bin "closures" test) generated 5 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/closures-a2bdbefe6ecccec5) [INFO] [stdout] running 5 tests [INFO] [stdout] test tests::calling_next_directly ... ok [INFO] [stdout] test tests::filters_by_size ... ok [INFO] [stdout] test tests::call_with_different_values ... ok [INFO] [stdout] test tests::other_iter_methods_on_counter ... ok [INFO] [stdout] test tests::call_with_string_values ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "46d39cab9b0c44ed027dc67c6f50ac12382f51ab69649703c45fb19ee608d31f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "46d39cab9b0c44ed027dc67c6f50ac12382f51ab69649703c45fb19ee608d31f", kill_on_drop: false }` [INFO] [stdout] 46d39cab9b0c44ed027dc67c6f50ac12382f51ab69649703c45fb19ee608d31f