[INFO] cloning repository https://github.com/aPere3/playgrust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aPere3/playgrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaPere3%2Fplaygrust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaPere3%2Fplaygrust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 13d1f4b7ee8a915dde19a6a33183494012a6f538 [INFO] checking aPere3/playgrust against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaPere3%2Fplaygrust" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/aPere3/playgrust on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/aPere3/playgrust [INFO] finished tweaking git repo https://github.com/aPere3/playgrust [INFO] tweaked toml for git repo https://github.com/aPere3/playgrust written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/aPere3/playgrust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ee7f67e30fb8b36227fe79b4954cc70c399d2a97fe225ae144ad1c30f73fa84e [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" "ee7f67e30fb8b36227fe79b4954cc70c399d2a97fe225ae144ad1c30f73fa84e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ee7f67e30fb8b36227fe79b4954cc70c399d2a97fe225ae144ad1c30f73fa84e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee7f67e30fb8b36227fe79b4954cc70c399d2a97fe225ae144ad1c30f73fa84e", kill_on_drop: false }` [INFO] [stdout] ee7f67e30fb8b36227fe79b4954cc70c399d2a97fe225ae144ad1c30f73fa84e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1e6d90058eb8b95fd6a1d26540ac2d12ea51ff7039ed73b5afa78065ce920f8f [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" "1e6d90058eb8b95fd6a1d26540ac2d12ea51ff7039ed73b5afa78065ce920f8f", kill_on_drop: false }` [INFO] [stderr] Checking playgrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Eq` is imported redundantly [INFO] [stdout] --> src/rust_book/mod.rs:1082:13 [INFO] [stdout] | [INFO] [stdout] 1082 | use std::cmp::Eq; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Eq` is imported redundantly [INFO] [stdout] --> src/rust_book/mod.rs:1082:13 [INFO] [stdout] | [INFO] [stdout] 1082 | use std::cmp::Eq; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:802:17 [INFO] [stdout] | [INFO] [stdout] 802 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:819:17 [INFO] [stdout] | [INFO] [stdout] 819 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:836:17 [INFO] [stdout] | [INFO] [stdout] 836 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/rust_book/mod.rs:847:17 [INFO] [stdout] | [INFO] [stdout] 847 | let f: Result<&str, &str> = Result::Err("Failure").unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/rust_book/mod.rs:850:17 [INFO] [stdout] | [INFO] [stdout] 850 | let f: Result<&str, &str> = Result::Err("Failure").expect("The program failed"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/rust_book/mod.rs:1275:17 [INFO] [stdout] | [INFO] [stdout] 1275 | let a = MySmartPointer(String::from("Hey guys")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/rust_book/mod.rs:1317:13 [INFO] [stdout] | [INFO] [stdout] 1317 | let b = List3::Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/rust_book/mod.rs:1320:17 [INFO] [stdout] | [INFO] [stdout] 1320 | let c = List3::Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `max_index` is never read [INFO] [stdout] --> src/rust_book/mod.rs:958:21 [INFO] [stdout] | [INFO] [stdout] 958 | let mut max_index = 0; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:802:17 [INFO] [stdout] | [INFO] [stdout] 802 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:819:17 [INFO] [stdout] | [INFO] [stdout] 819 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `message` [INFO] [stdout] --> src/rust_book/mod.rs:836:17 [INFO] [stdout] | [INFO] [stdout] 836 | Err(message) => { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/rust_book/mod.rs:847:17 [INFO] [stdout] | [INFO] [stdout] 847 | let f: Result<&str, &str> = Result::Err("Failure").unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/rust_book/mod.rs:850:17 [INFO] [stdout] | [INFO] [stdout] 850 | let f: Result<&str, &str> = Result::Err("Failure").expect("The program failed"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/rust_book/mod.rs:1275:17 [INFO] [stdout] | [INFO] [stdout] 1275 | let a = MySmartPointer(String::from("Hey guys")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/rust_book/mod.rs:1317:13 [INFO] [stdout] | [INFO] [stdout] 1317 | let b = List3::Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/rust_book/mod.rs:1320:17 [INFO] [stdout] | [INFO] [stdout] 1320 | let c = List3::Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `max_index` is never read [INFO] [stdout] --> src/rust_book/mod.rs:958:21 [INFO] [stdout] | [INFO] [stdout] 958 | let mut max_index = 0; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [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/rust_book/mod.rs:1182:13 [INFO] [stdout] | [INFO] [stdout] 1182 | let mut a = MyIterableArray::new(); [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/rust_book/mod.rs:1182:13 [INFO] [stdout] | [INFO] [stdout] 1182 | let mut a = MyIterableArray::new(); [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: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.25s [INFO] running `Command { std: "docker" "inspect" "1e6d90058eb8b95fd6a1d26540ac2d12ea51ff7039ed73b5afa78065ce920f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e6d90058eb8b95fd6a1d26540ac2d12ea51ff7039ed73b5afa78065ce920f8f", kill_on_drop: false }` [INFO] [stdout] 1e6d90058eb8b95fd6a1d26540ac2d12ea51ff7039ed73b5afa78065ce920f8f