[INFO] cloning repository https://github.com/Jkrish1011/Rust-Tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jkrish1011/Rust-Tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJkrish1011%2FRust-Tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJkrish1011%2FRust-Tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1d3e6ce0c9e1b2a604c297c2acfb576ebef4fac0 [INFO] checking Jkrish1011/Rust-Tutorial against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJkrish1011%2FRust-Tutorial" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Jkrish1011/Rust-Tutorial [INFO] finished tweaking git repo https://github.com/Jkrish1011/Rust-Tutorial [INFO] tweaked toml for git repo https://github.com/Jkrish1011/Rust-Tutorial written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Jkrish1011/Rust-Tutorial on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Jkrish1011/Rust-Tutorial already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d064b3b9d0b97dfa9d0f04d500c083db2444b17f9e5fda59d8b62ee279bbaa94 [INFO] running `Command { std: "docker" "start" "-a" "d064b3b9d0b97dfa9d0f04d500c083db2444b17f9e5fda59d8b62ee279bbaa94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d064b3b9d0b97dfa9d0f04d500c083db2444b17f9e5fda59d8b62ee279bbaa94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d064b3b9d0b97dfa9d0f04d500c083db2444b17f9e5fda59d8b62ee279bbaa94", kill_on_drop: false }` [INFO] [stdout] d064b3b9d0b97dfa9d0f04d500c083db2444b17f9e5fda59d8b62ee279bbaa94 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 758ed9dbfac2c29910cb90c0fa814d94c7bef79151782203b593286b3b55eed5 [INFO] running `Command { std: "docker" "start" "-a" "758ed9dbfac2c29910cb90c0fa814d94c7bef79151782203b593286b3b55eed5", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.85 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking pin-project-lite v0.2.14 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling syn v2.0.66 [INFO] [stderr] Compiling tokio-macros v2.3.0 [INFO] [stderr] Checking tokio v1.38.0 [INFO] [stderr] Checking RustSample v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s_haystack` [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 27 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_haystack` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `idx_haystack` [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:28:17 [INFO] [stdout] | [INFO] [stdout] 28 | let mut idx_haystack: i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_idx_haystack` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut s_needle: Vec = needle.chars().collect(); [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: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:28:13 [INFO] [stdout] | [INFO] [stdout] 28 | let mut idx_haystack: i32 = 0; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `idx_haystack` is never read [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | idx_haystack=0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `idx_haystack` is never read [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | idx_haystack = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut s_needle: Vec = needle.chars().collect(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 55 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Solution` is never constructed [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:22:12 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct Solution; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated functions `str_str2` and `str_str` are never used [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 24 | impl Solution { [INFO] [stdout] | ------------- associated functions in this implementation [INFO] [stdout] 25 | pub fn str_str2(haystack: String, needle: String) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 52 | pub fn str_str(haystack: String, needle: String) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s_haystack` [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 27 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_haystack` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `idx_haystack` [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:28:17 [INFO] [stdout] | [INFO] [stdout] 28 | let mut idx_haystack: i32 = 0; [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_idx_haystack` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut s_needle: Vec = needle.chars().collect(); [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: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:28:13 [INFO] [stdout] | [INFO] [stdout] 28 | let mut idx_haystack: i32 = 0; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `idx_haystack` is never read [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | idx_haystack=0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `idx_haystack` is never read [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | idx_haystack = 0; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut s_needle: Vec = needle.chars().collect(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 55 | let mut s_haystack: Vec = haystack.chars().collect(); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `str_str2` is never used [INFO] [stdout] --> src/leetcode/needleinhaystack.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 24 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 25 | pub fn str_str2(haystack: String, needle: String) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.34s [INFO] running `Command { std: "docker" "inspect" "758ed9dbfac2c29910cb90c0fa814d94c7bef79151782203b593286b3b55eed5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "758ed9dbfac2c29910cb90c0fa814d94c7bef79151782203b593286b3b55eed5", kill_on_drop: false }` [INFO] [stdout] 758ed9dbfac2c29910cb90c0fa814d94c7bef79151782203b593286b3b55eed5