[INFO] cloning repository https://github.com/ironscar/rust-starter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ironscar/rust-starter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironscar%2Frust-starter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironscar%2Frust-starter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7181551f6663a59fa884a4a40c5001489367a065 [INFO] testing ironscar/rust-starter against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fironscar%2Frust-starter" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/ironscar/rust-starter [INFO] finished tweaking git repo https://github.com/ironscar/rust-starter [INFO] tweaked toml for git repo https://github.com/ironscar/rust-starter written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/ironscar/rust-starter on toolchain 1.99.0-beta.1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/ironscar/rust-starter 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" "+1.99.0-beta.1" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9 [INFO] running `Command { std: "docker" "start" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }` [INFO] [stderr] Compiling automl_factory v0.1.0 (/opt/rustwide/workdir/automl_factory) [INFO] [stderr] Compiling rust_trials v0.1.0 (/opt/rustwide/workdir/rust_trials) [INFO] [stderr] Compiling rust_tutorials v0.1.0 (/opt/rustwide/workdir/rust_tutorials) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_trials/src/trials/linked_list.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | let mut display_str = self.val.to_string(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_trials/src/trials/linked_list.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let mut tail = head.push(3); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | if (len_method == 1) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - if (len_method == 1) { [INFO] [stdout] 8 + if len_method == 1 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 11 | } else if (len_method == 2) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 11 - } else if (len_method == 2) { [INFO] [stdout] 11 + } else if len_method == 2 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:15:15 [INFO] [stdout] | [INFO] [stdout] 15 | } else if (len_method == 3) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 15 - } else if (len_method == 3) { [INFO] [stdout] 15 + } else if len_method == 3 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_common` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:124:17 [INFO] [stdout] | [INFO] [stdout] 124 | is_common = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_common` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:120:17 [INFO] [stdout] | [INFO] [stdout] 120 | is_common = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `result` is assigned to, but never used [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:177:9 [INFO] [stdout] | [INFO] [stdout] 177 | let mut result = true; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_result` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `result` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:184:16 [INFO] [stdout] | [INFO] [stdout] 184 | result = false; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `prev1` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/control_flow.rs:64:26 [INFO] [stdout] | [INFO] [stdout] 64 | let mut prev1: u16 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 78 | prev1 = prev2; [INFO] [stdout] | ------------- `prev1` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `space2` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:55:29 [INFO] [stdout] | [INFO] [stdout] 55 | let mut space2: usize = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 62 | space2 = i; [INFO] [stdout] | ---------- `space2` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `space2` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:62:17 [INFO] [stdout] | [INFO] [stdout] 62 | space2 = i; [INFO] [stdout] | ^^^^^^^^^^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 70 | space2 = s.len(); [INFO] [stdout] | ---------------- `space2` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Unprintable` is never constructed [INFO] [stdout] --> rust_tutorials/src/tutorials/printers.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | struct Unprintable(i32); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/printers.rs:47:23 [INFO] [stdout] | [INFO] [stdout] 47 | struct DebugPrintable(i32); [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `DebugPrintable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `email` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/structs.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 3 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 6 | email: String [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Red` and `Blue` are never constructed [INFO] [stdout] --> rust_tutorials/src/tutorials/types.rs:162:5 [INFO] [stdout] | [INFO] [stdout] 161 | enum Color { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 162 | Red = 0xff0000, [INFO] [stdout] | ^^^ [INFO] [stdout] 163 | Green = 0x00ff00, [INFO] [stdout] 164 | Blue = 0x0000ff [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `default_panic_demo` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn default_panic_demo() -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `recoverable_errors_demo_1` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn recoverable_errors_demo_1() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `recoverable_errors_demo_2` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn recoverable_errors_demo_2() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `release` profile [optimized] target(s) in 0.56s [INFO] running `Command { std: "docker" "inspect" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }` [INFO] [stderr] Compiling automl_factory v0.1.0 (/opt/rustwide/workdir/automl_factory) [INFO] [stderr] Compiling rust_trials v0.1.0 (/opt/rustwide/workdir/rust_trials) [INFO] [stderr] Compiling rust_tutorials v0.1.0 (/opt/rustwide/workdir/rust_tutorials) [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | if (len_method == 1) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 8 - if (len_method == 1) { [INFO] [stdout] 8 + if len_method == 1 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 11 | } else if (len_method == 2) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 11 - } else if (len_method == 2) { [INFO] [stdout] 11 + } else if len_method == 2 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:15:15 [INFO] [stdout] | [INFO] [stdout] 15 | } else if (len_method == 3) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 15 - } else if (len_method == 3) { [INFO] [stdout] 15 + } else if len_method == 3 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_trials/src/trials/linked_list.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | let mut display_str = self.val.to_string(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_trials/src/trials/linked_list.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let mut tail = head.push(3); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_common` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:124:17 [INFO] [stdout] | [INFO] [stdout] 124 | is_common = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `is_common` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:120:17 [INFO] [stdout] | [INFO] [stdout] 120 | is_common = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `result` is assigned to, but never used [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:177:9 [INFO] [stdout] | [INFO] [stdout] 177 | let mut result = true; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_result` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `result` is never read [INFO] [stdout] --> rust_trials/src/trials/basic_problems.rs:184:16 [INFO] [stdout] | [INFO] [stdout] 184 | result = false; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `prev1` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/control_flow.rs:64:26 [INFO] [stdout] | [INFO] [stdout] 64 | let mut prev1: u16 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 78 | prev1 = prev2; [INFO] [stdout] | ------------- `prev1` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `space2` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:55:29 [INFO] [stdout] | [INFO] [stdout] 55 | let mut space2: usize = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 62 | space2 = i; [INFO] [stdout] | ---------- `space2` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `space2` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/ownership.rs:62:17 [INFO] [stdout] | [INFO] [stdout] 62 | space2 = i; [INFO] [stdout] | ^^^^^^^^^^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 70 | space2 = s.len(); [INFO] [stdout] | ---------------- `space2` is overwritten here before the previous value is read [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Unprintable` is never constructed [INFO] [stdout] --> rust_tutorials/src/tutorials/printers.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | struct Unprintable(i32); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/printers.rs:47:23 [INFO] [stdout] | [INFO] [stdout] 47 | struct DebugPrintable(i32); [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `DebugPrintable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `email` is never read [INFO] [stdout] --> rust_tutorials/src/tutorials/structs.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 3 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 6 | email: String [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Red` and `Blue` are never constructed [INFO] [stdout] --> rust_tutorials/src/tutorials/types.rs:162:5 [INFO] [stdout] | [INFO] [stdout] 161 | enum Color { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 162 | Red = 0xff0000, [INFO] [stdout] | ^^^ [INFO] [stdout] 163 | Green = 0x00ff00, [INFO] [stdout] 164 | Blue = 0x0000ff [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `default_panic_demo` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn default_panic_demo() -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `recoverable_errors_demo_1` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn recoverable_errors_demo_1() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `recoverable_errors_demo_2` is never used [INFO] [stdout] --> rust_tutorials/src/tutorials/error_handling.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn recoverable_errors_demo_2() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `release` profile [optimized] target(s) in 0.36s [INFO] running `Command { std: "docker" "inspect" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> rust_trials/src/trials/linked_list.rs:67:13 [INFO] [stderr] | [INFO] [stderr] 67 | let mut display_str = self.val.to_string(); [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> rust_trials/src/trials/linked_list.rs:91:9 [INFO] [stderr] | [INFO] [stderr] 91 | let mut tail = head.push(3); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `is_common` is never read [INFO] [stderr] --> rust_trials/src/trials/basic_problems.rs:124:17 [INFO] [stderr] | [INFO] [stderr] 124 | is_common = false; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `is_common` is never read [INFO] [stderr] --> rust_trials/src/trials/basic_problems.rs:120:17 [INFO] [stderr] | [INFO] [stderr] 120 | is_common = false; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable `result` is assigned to, but never used [INFO] [stderr] --> rust_trials/src/trials/basic_problems.rs:177:9 [INFO] [stderr] | [INFO] [stderr] 177 | let mut result = true; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_result` instead [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `result` is never read [INFO] [stderr] --> rust_trials/src/trials/basic_problems.rs:184:16 [INFO] [stderr] | [INFO] [stderr] 184 | result = false; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: `rust_trials` (bin "rust_trials" test) generated 6 warnings (run `cargo fix --bin "rust_trials" -p rust_trials --tests` to apply 2 suggestions) [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | if (len_method == 1) { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 8 - if (len_method == 1) { [INFO] [stderr] 8 + if len_method == 1 { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:11:15 [INFO] [stderr] | [INFO] [stderr] 11 | } else if (len_method == 2) { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 11 - } else if (len_method == 2) { [INFO] [stderr] 11 + } else if len_method == 2 { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:15:15 [INFO] [stderr] | [INFO] [stderr] 15 | } else if (len_method == 3) { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 15 - } else if (len_method == 3) { [INFO] [stderr] 15 + } else if len_method == 3 { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: value assigned to `prev1` is never read [INFO] [stderr] --> rust_tutorials/src/tutorials/control_flow.rs:64:26 [INFO] [stderr] | [INFO] [stderr] 64 | let mut prev1: u16 = 0; [INFO] [stderr] | ^ this value is reassigned later and never used [INFO] [stderr] ... [INFO] [stderr] 78 | prev1 = prev2; [INFO] [stderr] | ------------- `prev1` is overwritten here before the previous value is read [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | let mut s = String::from("hello world"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `space2` is never read [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:55:29 [INFO] [stderr] | [INFO] [stderr] 55 | let mut space2: usize = 0; [INFO] [stderr] | ^ this value is reassigned later and never used [INFO] [stderr] ... [INFO] [stderr] 62 | space2 = i; [INFO] [stderr] | ---------- `space2` is overwritten here before the previous value is read [INFO] [stderr] [INFO] [stderr] warning: value assigned to `space2` is never read [INFO] [stderr] --> rust_tutorials/src/tutorials/ownership.rs:62:17 [INFO] [stderr] | [INFO] [stderr] 62 | space2 = i; [INFO] [stderr] | ^^^^^^^^^^ this value is reassigned later and never used [INFO] [stderr] ... [INFO] [stderr] 70 | space2 = s.len(); [INFO] [stderr] | ---------------- `space2` is overwritten here before the previous value is read [INFO] [stderr] [INFO] [stderr] warning: struct `Unprintable` is never constructed [INFO] [stderr] --> rust_tutorials/src/tutorials/printers.rs:43:8 [INFO] [stderr] | [INFO] [stderr] 43 | struct Unprintable(i32); [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> rust_tutorials/src/tutorials/printers.rs:47:23 [INFO] [stderr] | [INFO] [stderr] 47 | struct DebugPrintable(i32); [INFO] [stderr] | -------------- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing this field [INFO] [stderr] = note: `DebugPrintable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: field `email` is never read [INFO] [stderr] --> rust_tutorials/src/tutorials/structs.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 3 | struct User { [INFO] [stderr] | ---- field in this struct [INFO] [stderr] ... [INFO] [stderr] 6 | email: String [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: variants `Red` and `Blue` are never constructed [INFO] [stderr] --> rust_tutorials/src/tutorials/types.rs:162:5 [INFO] [stderr] | [INFO] [stderr] 161 | enum Color { [INFO] [stderr] | ----- variants in this enum [INFO] [stderr] 162 | Red = 0xff0000, [INFO] [stderr] | ^^^ [INFO] [stderr] 163 | Green = 0x00ff00, [INFO] [stderr] 164 | Blue = 0x0000ff [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `default_panic_demo` is never used [INFO] [stderr] --> rust_tutorials/src/tutorials/error_handling.rs:4:8 [INFO] [stderr] | [INFO] [stderr] 4 | pub fn default_panic_demo() -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `recoverable_errors_demo_1` is never used [INFO] [stderr] --> rust_tutorials/src/tutorials/error_handling.rs:11:8 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn recoverable_errors_demo_1() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `recoverable_errors_demo_2` is never used [INFO] [stderr] --> rust_tutorials/src/tutorials/error_handling.rs:26:8 [INFO] [stderr] | [INFO] [stderr] 26 | pub fn recoverable_errors_demo_2() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `rust_tutorials` (bin "rust_tutorials" test) generated 14 warnings (run `cargo fix --bin "rust_tutorials" -p rust_tutorials --tests` to apply 4 suggestions) [INFO] [stderr] Finished `release` profile [optimized] target(s) in 0.05s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/release/deps/automl_factory-48e4f88dce044731) [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/release/deps/rust_trials-6e555c61230c3a0f) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/release/deps/rust_tutorials-0ea3d1b0eb6afbb6) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9", kill_on_drop: false }` [INFO] [stdout] ef9a8fee1a7f48c98b1814d0b3c2417bbc97c31329baf1202a1d85ba631cbcb9