[INFO] cloning repository https://github.com/el-hadji-mamadou-sarr/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/el-hadji-mamadou-sarr/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-hadji-mamadou-sarr%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-hadji-mamadou-sarr%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9856c0be880057cf89c86ecf2ceba4159510cd2
[INFO] checking el-hadji-mamadou-sarr/learning_rust against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-hadji-mamadou-sarr%2Flearning_rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/el-hadji-mamadou-sarr/learning_rust
[INFO] finished tweaking git repo https://github.com/el-hadji-mamadou-sarr/learning_rust
[INFO] tweaked toml for git repo https://github.com/el-hadji-mamadou-sarr/learning_rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/el-hadji-mamadou-sarr/learning_rust on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/el-hadji-mamadou-sarr/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" "+4e55a504843955c97eb06907c71f6f3e99208021" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fa56078ef4c434155f740ebc0fe86644aae7a247fea9fb69307a2b03ef4d38a
[INFO] running `Command { std: "docker" "start" "-a" "6fa56078ef4c434155f740ebc0fe86644aae7a247fea9fb69307a2b03ef4d38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fa56078ef4c434155f740ebc0fe86644aae7a247fea9fb69307a2b03ef4d38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fa56078ef4c434155f740ebc0fe86644aae7a247fea9fb69307a2b03ef4d38a", kill_on_drop: false }`
[INFO] [stdout] 6fa56078ef4c434155f740ebc0fe86644aae7a247fea9fb69307a2b03ef4d38a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d07765efdf7af4fcbc642b6826011cbdfb60101620b79436a563827dd74be24c
[INFO] running `Command { std: "docker" "start" "-a" "d07765efdf7af4fcbc642b6826011cbdfb60101620b79436a563827dd74be24c", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/exo0.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Person {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `old_age` and `show_age` are never used
[INFO] [stdout]  --> src/exo0.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Person {
[INFO] [stdout]   | ----------- associated items in this implementation
[INFO] [stdout] 6 |     fn old_age() -> Self {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn show_age(&self) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/exo0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn function() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Yellow` is never constructed
[INFO] [stdout]   --> src/exo1.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 35 |     Green,
[INFO] [stdout] 36 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/exo2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function(){
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Emp` is never constructed
[INFO] [stdout]  --> src/exo3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Emp{
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_it` is never used
[INFO] [stdout]  --> src/exo3.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn print_it(data:&str){
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/exo3.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn function(){
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/exo0.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Person {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `old_age` and `show_age` are never used
[INFO] [stdout]  --> src/exo0.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Person {
[INFO] [stdout]   | ----------- associated items in this implementation
[INFO] [stdout] 6 |     fn old_age() -> Self {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn show_age(&self) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/exo0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn function() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Yellow` is never constructed
[INFO] [stdout]   --> src/exo1.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 35 |     Green,
[INFO] [stdout] 36 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/exo2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function(){
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Emp` is never constructed
[INFO] [stdout]  --> src/exo3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Emp{
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_it` is never used
[INFO] [stdout]  --> src/exo3.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn print_it(data:&str){
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/exo3.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn function(){
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "d07765efdf7af4fcbc642b6826011cbdfb60101620b79436a563827dd74be24c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d07765efdf7af4fcbc642b6826011cbdfb60101620b79436a563827dd74be24c", kill_on_drop: false }`
[INFO] [stdout] d07765efdf7af4fcbc642b6826011cbdfb60101620b79436a563827dd74be24c