[INFO] cloning repository https://github.com/Crakleurs/classic_RUST_algorithms [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Crakleurs/classic_RUST_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrakleurs%2Fclassic_RUST_algorithms", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrakleurs%2Fclassic_RUST_algorithms'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6f6529510f6bf6bda7bd5df7b9b1b4ffcbae7303 [INFO] checking Crakleurs/classic_RUST_algorithms against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrakleurs%2Fclassic_RUST_algorithms" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Crakleurs/classic_RUST_algorithms on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Crakleurs/classic_RUST_algorithms [INFO] finished tweaking git repo https://github.com/Crakleurs/classic_RUST_algorithms [INFO] tweaked toml for git repo https://github.com/Crakleurs/classic_RUST_algorithms written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/Crakleurs/classic_RUST_algorithms already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 69cba8afcc077ed8af15640b816d999fa434f7d3d2eff4a31f58daa811df9b48 [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" "69cba8afcc077ed8af15640b816d999fa434f7d3d2eff4a31f58daa811df9b48", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "69cba8afcc077ed8af15640b816d999fa434f7d3d2eff4a31f58daa811df9b48", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69cba8afcc077ed8af15640b816d999fa434f7d3d2eff4a31f58daa811df9b48", kill_on_drop: false }` [INFO] [stdout] 69cba8afcc077ed8af15640b816d999fa434f7d3d2eff4a31f58daa811df9b48 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f7345f69d19acd83677480d0a41bc5e22582eba1854900f9f906ad0a2508559d [INFO] running `Command { std: "docker" "start" "-a" "f7345f69d19acd83677480d0a41bc5e22582eba1854900f9f906ad0a2508559d", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Compiling standback v0.2.17 [INFO] [stderr] Compiling time v0.2.27 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Compiling time-macros-impl v0.1.2 [INFO] [stderr] Checking time-macros v0.1.1 [INFO] [stderr] Checking RustFirstSteps v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:204:9 [INFO] [stdout] | [INFO] [stdout] 204 | let mut father = node; [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: `fibonacci` [INFO] [stdout] --> src/main.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn fibonacci(n: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `fibonacci_recursive` [INFO] [stdout] --> src/main.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn fibonacci_recursive(n: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `RustFirstSteps` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `rust_first_steps` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:204:9 [INFO] [stdout] | [INFO] [stdout] 204 | let mut father = node; [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: `fibonacci` [INFO] [stdout] --> src/main.rs:47:4 [INFO] [stdout] | [INFO] [stdout] 47 | fn fibonacci(n: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `fibonacci_recursive` [INFO] [stdout] --> src/main.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn fibonacci_recursive(n: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `RustFirstSteps` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `rust_first_steps` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.09s [INFO] running `Command { std: "docker" "inspect" "f7345f69d19acd83677480d0a41bc5e22582eba1854900f9f906ad0a2508559d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7345f69d19acd83677480d0a41bc5e22582eba1854900f9f906ad0a2508559d", kill_on_drop: false }` [INFO] [stdout] f7345f69d19acd83677480d0a41bc5e22582eba1854900f9f906ad0a2508559d