[INFO] updating cached repository https://github.com/chokri/rust-basics [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] [stderr] From https://github.com/chokri/rust-basics [INFO] [stderr] * [new branch] dependabot/cargo/bcrypt-0.6.1 -> dependabot/cargo/bcrypt-0.6.1 [INFO] [stderr] * [new branch] dependabot/cargo/rand-0.6.5 -> dependabot/cargo/rand-0.6.5 [INFO] [stderr] d7b2d64..6d3e8d4 master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6d3e8d46516a9c6b9045c0067939a50b8c43ece9 [INFO] checking chokri/rust-basics against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchokri%2Frust-basics" "/workspace/builds/worker-3/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/chokri/rust-basics on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/chokri/rust-basics [INFO] finished tweaking git repo https://github.com/chokri/rust-basics [INFO] tweaked toml for git repo https://github.com/chokri/rust-basics written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/chokri/rust-basics already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 93879ac62e3ce174edfc1b268d5a5c8fe07459c0ca646e567a80b2c9325a9c63 [INFO] running `"docker" "start" "-a" "93879ac62e3ce174edfc1b268d5a5c8fe07459c0ca646e567a80b2c9325a9c63"` [INFO] [stderr] Checking block-cipher-trait v0.6.2 [INFO] [stderr] Checking blowfish v0.4.0 [INFO] [stderr] Checking bcrypt v0.4.0 [INFO] [stderr] Checking rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/vars.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let name = "chokri"; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `age` [INFO] [stderr] --> src/vars.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let age = 34; // We can't change this [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_age` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `year` [INFO] [stderr] --> src/vars.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let year = 2019; // This can be changed [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_year` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sport` [INFO] [stderr] --> src/vars.rs:21:10 [INFO] [stderr] | [INFO] [stderr] 21 | let (sport, activity) = ("Basketball", "Playing"); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_sport` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `activity` [INFO] [stderr] --> src/vars.rs:21:17 [INFO] [stderr] | [INFO] [stderr] 21 | let (sport, activity) = ("Basketball", "Playing"); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_activity` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/person.rs:48:9 [INFO] [stderr] | [INFO] [stderr] 48 | let mut person = Person::new("Chuck", "Norris", "male", 38); [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: method is never used: `full_name` [INFO] [stderr] --> src/person.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | fn full_name (&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::str::::replace` that must be used [INFO] [stderr] --> src/vars.rs:36:5 [INFO] [stderr] | [INFO] [stderr] 36 | title.replace("world", "there"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this returns the replaced string as a new allocation, without modifying the original [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/vars.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let name = "chokri"; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `age` [INFO] [stderr] --> src/vars.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let age = 34; // We can't change this [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_age` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `year` [INFO] [stderr] --> src/vars.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 17 | let year = 2019; // This can be changed [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_year` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sport` [INFO] [stderr] --> src/vars.rs:21:10 [INFO] [stderr] | [INFO] [stderr] 21 | let (sport, activity) = ("Basketball", "Playing"); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_sport` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `activity` [INFO] [stderr] --> src/vars.rs:21:17 [INFO] [stderr] | [INFO] [stderr] 21 | let (sport, activity) = ("Basketball", "Playing"); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_activity` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/person.rs:48:9 [INFO] [stderr] | [INFO] [stderr] 48 | let mut person = Person::new("Chuck", "Norris", "male", 38); [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: method is never used: `full_name` [INFO] [stderr] --> src/person.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | fn full_name (&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::str::::replace` that must be used [INFO] [stderr] --> src/vars.rs:36:5 [INFO] [stderr] | [INFO] [stderr] 36 | title.replace("world", "there"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this returns the replaced string as a new allocation, without modifying the original [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.86s [INFO] running `"docker" "inspect" "93879ac62e3ce174edfc1b268d5a5c8fe07459c0ca646e567a80b2c9325a9c63"` [INFO] running `"docker" "rm" "-f" "93879ac62e3ce174edfc1b268d5a5c8fe07459c0ca646e567a80b2c9325a9c63"` [INFO] [stdout] 93879ac62e3ce174edfc1b268d5a5c8fe07459c0ca646e567a80b2c9325a9c63