[INFO] cloning repository https://github.com/iamuditg/RustBasics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamuditg/RustBasics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamuditg%2FRustBasics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamuditg%2FRustBasics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40cb2b565cc9642f4ad757c4bb7b498fb5e020e1
[INFO] testing iamuditg/RustBasics against try#ed7f3d77595b4831fdf085f2529aa13b5b51ff7d for pr-134530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamuditg%2FRustBasics" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamuditg/RustBasics on toolchain ed7f3d77595b4831fdf085f2529aa13b5b51ff7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamuditg/RustBasics
[INFO] finished tweaking git repo https://github.com/iamuditg/RustBasics
[INFO] tweaked toml for git repo https://github.com/iamuditg/RustBasics written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/iamuditg/RustBasics 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" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a9c8613d9ee670d2fc11f2e5cf2d200032e6791d5902ebfe6c2887b9a27a388
[INFO] running `Command { std: "docker" "start" "-a" "2a9c8613d9ee670d2fc11f2e5cf2d200032e6791d5902ebfe6c2887b9a27a388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a9c8613d9ee670d2fc11f2e5cf2d200032e6791d5902ebfe6c2887b9a27a388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a9c8613d9ee670d2fc11f2e5cf2d200032e6791d5902ebfe6c2887b9a27a388", kill_on_drop: false }`
[INFO] [stdout] 2a9c8613d9ee670d2fc11f2e5cf2d200032e6791d5902ebfe6c2887b9a27a388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 461b1ddcdd03b298e577b47bfeb07ba35579f6db4949340acb2e590c18189cf4
[INFO] running `Command { std: "docker" "start" "-a" "461b1ddcdd03b298e577b47bfeb07ba35579f6db4949340acb2e590c18189cf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.2.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling RustBasic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `common_concept`
[INFO] [stdout]  --> src/main.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::common_concept::{common_concept};
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::guess_game::guess_game_init`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::guess_game::guess_game_init;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common_concept.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let (x,y,z) = tup;
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/common_concept.rs:140:14
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let (x,y,z) = tup;
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/ownership.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let word = first_word(&mu_string[0..6]);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/ownership.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let word = first_word(&mu_string[..]);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ownership.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut mu_string = String::from("hello world");
[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: unused variable: `s1`
[INFO] [stdout]   --> src/ownership.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let s1 = gives_ownership(); // gives ownership moves its return value into s1
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guess_game_init` is never used
[INFO] [stdout]  --> src/guess_game.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn guess_game_init() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THREE_HOURS_IN_SECONDS` is never used
[INFO] [stdout]  --> src/common_concept.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const THREE_HOURS_IN_SECONDS: u32 = 60 * 60 * 3;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `common_concept` is never used
[INFO] [stdout]  --> src/common_concept.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn common_concept() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow` is never used
[INFO] [stdout]   --> src/common_concept.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn control_flow() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functions` is never used
[INFO] [stdout]   --> src/common_concept.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn functions() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_function` is never used
[INFO] [stdout]   --> src/common_concept.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn return_function(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parameter_function` is never used
[INFO] [stdout]   --> src/common_concept.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn parameter_function(p0: i32, p1: char) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `another_function` is never used
[INFO] [stdout]    --> src/common_concept.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn another_function() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_types` is never used
[INFO] [stdout]    --> src/common_concept.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn data_types() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variable` is never used
[INFO] [stdout]    --> src/common_concept.rs:148:4
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn variable() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]    --> src/common_concept.rs:157:4
[INFO] [stdout]     |
[INFO] [stdout] 157 | fn constants() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]    --> src/common_concept.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn shadowing() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_two_ex` is never used
[INFO] [stdout]   --> src/ownership.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn string_two_ex() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]   --> src/ownership.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn change(some_string: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_and_gives_back` is never used
[INFO] [stdout]   --> src/ownership.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn takes_and_gives_back(a_string: &String) -> &String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gives_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gives_ownership() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_one_ex` is never used
[INFO] [stdout]   --> src/ownership.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn string_one_ex() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/ownership.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn makes_copy(p0: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn takes_ownership(some_string: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "461b1ddcdd03b298e577b47bfeb07ba35579f6db4949340acb2e590c18189cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "461b1ddcdd03b298e577b47bfeb07ba35579f6db4949340acb2e590c18189cf4", kill_on_drop: false }`
[INFO] [stdout] 461b1ddcdd03b298e577b47bfeb07ba35579f6db4949340acb2e590c18189cf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53eea62d11f3e26e01c300df5c1eae24c0015e5d7226b4a6b31b7e2000f8d61e
[INFO] running `Command { std: "docker" "start" "-a" "53eea62d11f3e26e01c300df5c1eae24c0015e5d7226b4a6b31b7e2000f8d61e", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustBasic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `common_concept`
[INFO] [stdout]  --> src/main.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::common_concept::{common_concept};
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::guess_game::guess_game_init`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::guess_game::guess_game_init;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common_concept.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let (x,y,z) = tup;
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/common_concept.rs:140:14
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let (x,y,z) = tup;
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/ownership.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let word = first_word(&mu_string[0..6]);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/ownership.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let word = first_word(&mu_string[..]);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ownership.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut mu_string = String::from("hello world");
[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: unused variable: `s1`
[INFO] [stdout]   --> src/ownership.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let s1 = gives_ownership(); // gives ownership moves its return value into s1
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guess_game_init` is never used
[INFO] [stdout]  --> src/guess_game.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn guess_game_init() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THREE_HOURS_IN_SECONDS` is never used
[INFO] [stdout]  --> src/common_concept.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const THREE_HOURS_IN_SECONDS: u32 = 60 * 60 * 3;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `common_concept` is never used
[INFO] [stdout]  --> src/common_concept.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn common_concept() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow` is never used
[INFO] [stdout]   --> src/common_concept.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn control_flow() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functions` is never used
[INFO] [stdout]   --> src/common_concept.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn functions() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_function` is never used
[INFO] [stdout]   --> src/common_concept.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn return_function(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parameter_function` is never used
[INFO] [stdout]   --> src/common_concept.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn parameter_function(p0: i32, p1: char) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `another_function` is never used
[INFO] [stdout]    --> src/common_concept.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn another_function() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_types` is never used
[INFO] [stdout]    --> src/common_concept.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn data_types() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variable` is never used
[INFO] [stdout]    --> src/common_concept.rs:148:4
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn variable() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]    --> src/common_concept.rs:157:4
[INFO] [stdout]     |
[INFO] [stdout] 157 | fn constants() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]    --> src/common_concept.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn shadowing() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_two_ex` is never used
[INFO] [stdout]   --> src/ownership.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn string_two_ex() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]   --> src/ownership.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn change(some_string: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_and_gives_back` is never used
[INFO] [stdout]   --> src/ownership.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn takes_and_gives_back(a_string: &String) -> &String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gives_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn gives_ownership() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_one_ex` is never used
[INFO] [stdout]   --> src/ownership.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn string_one_ex() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/ownership.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn makes_copy(p0: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn takes_ownership(some_string: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "53eea62d11f3e26e01c300df5c1eae24c0015e5d7226b4a6b31b7e2000f8d61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53eea62d11f3e26e01c300df5c1eae24c0015e5d7226b4a6b31b7e2000f8d61e", kill_on_drop: false }`
[INFO] [stdout] 53eea62d11f3e26e01c300df5c1eae24c0015e5d7226b4a6b31b7e2000f8d61e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f015ac51c980207abb0691c07cad697467251f788be3a0e626f4882c084166b7
[INFO] running `Command { std: "docker" "start" "-a" "f015ac51c980207abb0691c07cad697467251f788be3a0e626f4882c084166b7", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `common_concept`
[INFO] [stderr]  --> src/main.rs:1:29
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::common_concept::{common_concept};
[INFO] [stderr]   |                             ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::guess_game::guess_game_init`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::guess_game::guess_game_init;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/common_concept.rs:140:10
[INFO] [stderr]     |
[INFO] [stderr] 140 |     let (x,y,z) = tup;
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]    --> src/common_concept.rs:140:14
[INFO] [stderr]     |
[INFO] [stderr] 140 |     let (x,y,z) = tup;
[INFO] [stderr]     |              ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]   --> src/ownership.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let word = first_word(&mu_string[0..6]);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]   --> src/ownership.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let word = first_word(&mu_string[..]);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/ownership.rs:10:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 10 |     let mut mu_string = String::from("hello world");
[INFO] [stdout] 
[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: unused variable: `s1`
[INFO] [stderr]   --> src/ownership.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let s1 = gives_ownership(); // gives ownership moves its return value into s1
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stderr] 
[INFO] [stderr] warning: function `guess_game_init` is never used
[INFO] [stderr]  --> src/guess_game.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn guess_game_init() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `THREE_HOURS_IN_SECONDS` is never used
[INFO] [stderr]  --> src/common_concept.rs:3:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | const THREE_HOURS_IN_SECONDS: u32 = 60 * 60 * 3;
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `common_concept` is never used
[INFO] [stderr]  --> src/common_concept.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn common_concept() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `control_flow` is never used
[INFO] [stderr]   --> src/common_concept.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn control_flow() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `functions` is never used
[INFO] [stderr]   --> src/common_concept.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn functions() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `return_function` is never used
[INFO] [stderr]   --> src/common_concept.rs:94:4
[INFO] [stderr]    |
[INFO] [stderr] 94 | fn return_function(x: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parameter_function` is never used
[INFO] [stderr]   --> src/common_concept.rs:98:4
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn parameter_function(p0: i32, p1: char) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `another_function` is never used
[INFO] [stderr]    --> src/common_concept.rs:102:4
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn another_function() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `data_types` is never used
[INFO] [stderr]    --> src/common_concept.rs:106:4
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn data_types() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `variable` is never used
[INFO] [stderr]    --> src/common_concept.rs:148:4
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn variable() {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `constants` is never used
[INFO] [stderr]    --> src/common_concept.rs:157:4
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn constants() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `shadowing` is never used
[INFO] [stderr]    --> src/common_concept.rs:163:4
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn shadowing() {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_two_ex` is never used
[INFO] [stderr]   --> src/ownership.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn string_two_ex() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `change` is never used
[INFO] [stderr]   --> src/ownership.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn change(some_string: &mut String) {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `takes_and_gives_back` is never used
[INFO] [stderr]   --> src/ownership.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn takes_and_gives_back(a_string: &String) -> &String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `gives_ownership` is never used
[INFO] [stderr]   --> src/ownership.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn gives_ownership() -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_one_ex` is never used
[INFO] [stderr]   --> src/ownership.rs:63:4
[INFO] [stderr]    |
[INFO] [stderr] 63 | fn string_one_ex() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `makes_copy` is never used
[INFO] [stderr]   --> src/ownership.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn makes_copy(p0: i32) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `takes_ownership` is never used
[INFO] [stderr]   --> src/ownership.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn takes_ownership(some_string: String) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `RustBasic` (bin "RustBasic" test) generated 27 warnings (run `cargo fix --bin "RustBasic" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/RustBasic-2377ae1d7bac3dd1)
[INFO] running `Command { std: "docker" "inspect" "f015ac51c980207abb0691c07cad697467251f788be3a0e626f4882c084166b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f015ac51c980207abb0691c07cad697467251f788be3a0e626f4882c084166b7", kill_on_drop: false }`
[INFO] [stdout] f015ac51c980207abb0691c07cad697467251f788be3a0e626f4882c084166b7