[INFO] cloning repository https://github.com/arunkumar-reddy/Rust-Intro [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arunkumar-reddy/Rust-Intro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farunkumar-reddy%2FRust-Intro", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farunkumar-reddy%2FRust-Intro'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 73e291e75bfee1cb3553d9dbc3febc54205007b7 [INFO] checking arunkumar-reddy/Rust-Intro against master#2e5723137b2b88368d018b262a0a823a1423131b for pr-78935-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farunkumar-reddy%2FRust-Intro" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/arunkumar-reddy/Rust-Intro on toolchain 2e5723137b2b88368d018b262a0a823a1423131b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/arunkumar-reddy/Rust-Intro [INFO] finished tweaking git repo https://github.com/arunkumar-reddy/Rust-Intro [INFO] tweaked toml for git repo https://github.com/arunkumar-reddy/Rust-Intro written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/arunkumar-reddy/Rust-Intro already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "metadata" "--no-deps" "--format-version=1", 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] f9518028ceb79521447a71ae2dc41f147a39df3345476212a66160629920990b [INFO] running `Command { std: "docker" "start" "-a" "f9518028ceb79521447a71ae2dc41f147a39df3345476212a66160629920990b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f9518028ceb79521447a71ae2dc41f147a39df3345476212a66160629920990b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9518028ceb79521447a71ae2dc41f147a39df3345476212a66160629920990b", kill_on_drop: false }` [INFO] [stdout] f9518028ceb79521447a71ae2dc41f147a39df3345476212a66160629920990b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "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] 9b7f2649211a42e275ae6a198953dab1b3ad12e65010a524e4de4f4baa1fa7f0 [INFO] running `Command { std: "docker" "start" "-a" "9b7f2649211a42e275ae6a198953dab1b3ad12e65010a524e4de4f4baa1fa7f0", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.42 [INFO] [stderr] Compiling pin-project-internal v0.4.25 [INFO] [stderr] Compiling proc-macro-nested v0.1.6 [INFO] [stderr] Compiling proc-macro-hack v0.5.18 [INFO] [stderr] Checking arc-swap v0.4.7 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking openssl-sys v0.9.58 [INFO] [stderr] Checking socket2 v0.3.15 [INFO] [stderr] Checking signal-hook-registry v1.2.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking indexmap v1.6.0 [INFO] [stderr] Checking tracing v0.1.21 [INFO] [stderr] Checking openssl v0.10.30 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking native-tls v0.2.4 [INFO] [stderr] Compiling tokio-macros v0.2.5 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Checking tokio v0.2.22 [INFO] [stderr] Checking pin-project v0.4.25 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking tokio-util v0.3.1 [INFO] [stderr] Checking tokio-tls v0.3.1 [INFO] [stderr] Checking h2 v0.2.6 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking hyper v0.13.8 [INFO] [stderr] Checking hyper-tls v0.4.3 [INFO] [stderr] Checking reqwest v0.10.8 [INFO] [stderr] Checking rust_intro v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/async_await/mod.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let res = match res { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/mod.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(value: u32) -> Node { [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: `search` [INFO] [stdout] --> src/bst/mod.rs:46:12 [INFO] [stdout] | [INFO] [stdout] 46 | pub fn search(&self, val: i32) -> Option<&Node> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `search` [INFO] [stdout] --> src/bst/mod.rs:141:12 [INFO] [stdout] | [INFO] [stdout] 141 | pub fn search(&self, val: i32) -> Option<&Node> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/async_await/mod.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let res = match res { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/linked_list/mod.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(value: u32) -> Node { [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: `search` [INFO] [stdout] --> src/bst/mod.rs:46:12 [INFO] [stdout] | [INFO] [stdout] 46 | pub fn search(&self, val: i32) -> Option<&Node> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `search` [INFO] [stdout] --> src/bst/mod.rs:141:12 [INFO] [stdout] | [INFO] [stdout] 141 | pub fn search(&self, val: i32) -> Option<&Node> { [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 1m 11s [INFO] running `Command { std: "docker" "inspect" "9b7f2649211a42e275ae6a198953dab1b3ad12e65010a524e4de4f4baa1fa7f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b7f2649211a42e275ae6a198953dab1b3ad12e65010a524e4de4f4baa1fa7f0", kill_on_drop: false }` [INFO] [stdout] 9b7f2649211a42e275ae6a198953dab1b3ad12e65010a524e4de4f4baa1fa7f0