[INFO] cloning repository https://github.com/saqib40/learning-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saqib40/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5bb6595de4d4656c970248bdabc088d0bc5b2990 [INFO] checking saqib40/learning-rust against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaqib40%2Flearning-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/saqib40/learning-rust [INFO] finished tweaking git repo https://github.com/saqib40/learning-rust [INFO] tweaked toml for git repo https://github.com/saqib40/learning-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/saqib40/learning-rust on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/saqib40/learning-rust 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e2fe49fa1adfda895a6e73fdd0a9f72fb2b806cdba24cca6a5f7e42049deef50 [INFO] running `Command { std: "docker" "start" "-a" "e2fe49fa1adfda895a6e73fdd0a9f72fb2b806cdba24cca6a5f7e42049deef50", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e2fe49fa1adfda895a6e73fdd0a9f72fb2b806cdba24cca6a5f7e42049deef50", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e2fe49fa1adfda895a6e73fdd0a9f72fb2b806cdba24cca6a5f7e42049deef50", kill_on_drop: false }` [INFO] [stdout] e2fe49fa1adfda895a6e73fdd0a9f72fb2b806cdba24cca6a5f7e42049deef50 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e468ae297830cbfefba69d61af2674f425178677ce5094839b2a70ad0c2ca79a [INFO] running `Command { std: "docker" "start" "-a" "e468ae297830cbfefba69d61af2674f425178677ce5094839b2a70ad0c2ca79a", kill_on_drop: false }` [INFO] [stderr] Checking project1 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership_stack.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let y = x; // unused variable warning [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/borrow/rules.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut s = String::from("Rust"); [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/structs/heap_trait.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut user1 = User { [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/structs/stack_trait.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut user1 = User { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `handle` [INFO] [stdout] --> src/threads/ex1.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let handle = thread::spawn(move || { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `sign_in_count` and `username` are never read [INFO] [stdout] --> src/structs/heap_trait.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | active: bool, [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] 5 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `sign_in_count` is never read [INFO] [stdout] --> src/structs/stack_trait.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 3 | active: bool, [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `North`, `South`, and `West` are never constructed [INFO] [stdout] --> src/enums/basic.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | enum Direction { [INFO] [stdout] | --------- variants in this enum [INFO] [stdout] 2 | North, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 3 | South, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | East, [INFO] [stdout] 5 | West, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Shape` is never used [INFO] [stdout] --> src/enums/values.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | enum Shape { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex1` is never used [INFO] [stdout] --> src/threads/ex1.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex2` is never used [INFO] [stdout] --> src/threads/ex1.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn ex2() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex3` is never used [INFO] [stdout] --> src/threads/ex1.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn ex3() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex4` is never used [INFO] [stdout] --> src/threads/ex2.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn ex4() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex5` is never used [INFO] [stdout] --> src/threads/ex2.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn ex5() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `optionEg` should have a snake case name [INFO] [stdout] --> src/option.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn optionEg() { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `option_eg` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership_stack.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | let y = x; // unused variable warning [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/borrow/rules.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut s = String::from("Rust"); [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/structs/heap_trait.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut user1 = User { [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/structs/stack_trait.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut user1 = User { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `handle` [INFO] [stdout] --> src/threads/ex1.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let handle = thread::spawn(move || { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `sign_in_count` and `username` are never read [INFO] [stdout] --> src/structs/heap_trait.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | active: bool, [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] 5 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `sign_in_count` is never read [INFO] [stdout] --> src/structs/stack_trait.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 3 | active: bool, [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `North`, `South`, and `West` are never constructed [INFO] [stdout] --> src/enums/basic.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | enum Direction { [INFO] [stdout] | --------- variants in this enum [INFO] [stdout] 2 | North, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 3 | South, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | East, [INFO] [stdout] 5 | West, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Shape` is never used [INFO] [stdout] --> src/enums/values.rs:1:6 [INFO] [stdout] | [INFO] [stdout] 1 | enum Shape { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex1` is never used [INFO] [stdout] --> src/threads/ex1.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex2` is never used [INFO] [stdout] --> src/threads/ex1.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn ex2() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex3` is never used [INFO] [stdout] --> src/threads/ex1.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn ex3() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex4` is never used [INFO] [stdout] --> src/threads/ex2.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn ex4() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex5` is never used [INFO] [stdout] --> src/threads/ex2.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn ex5() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `optionEg` should have a snake case name [INFO] [stdout] --> src/option.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn optionEg() { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `option_eg` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s [INFO] running `Command { std: "docker" "inspect" "e468ae297830cbfefba69d61af2674f425178677ce5094839b2a70ad0c2ca79a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e468ae297830cbfefba69d61af2674f425178677ce5094839b2a70ad0c2ca79a", kill_on_drop: false }` [INFO] [stdout] e468ae297830cbfefba69d61af2674f425178677ce5094839b2a70ad0c2ca79a