[INFO] cloning repository https://github.com/5255b64/tintin_rust_lesson_3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/5255b64/tintin_rust_lesson_3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5255b64%2Ftintin_rust_lesson_3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5255b64%2Ftintin_rust_lesson_3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7c2ba8490311b558129be1400706452b97e680e
[INFO] testing 5255b64/tintin_rust_lesson_3 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5255b64%2Ftintin_rust_lesson_3" "/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/5255b64/tintin_rust_lesson_3
[INFO] finished tweaking git repo https://github.com/5255b64/tintin_rust_lesson_3
[INFO] tweaked toml for git repo https://github.com/5255b64/tintin_rust_lesson_3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/5255b64/tintin_rust_lesson_3 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/5255b64/tintin_rust_lesson_3 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e52e1fe45fc15ad9f9120033c913e6e31177e4d8093169485d86e9dc764843c
[INFO] running `Command { std: "docker" "start" "-a" "8e52e1fe45fc15ad9f9120033c913e6e31177e4d8093169485d86e9dc764843c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e52e1fe45fc15ad9f9120033c913e6e31177e4d8093169485d86e9dc764843c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e52e1fe45fc15ad9f9120033c913e6e31177e4d8093169485d86e9dc764843c", kill_on_drop: false }`
[INFO] [stdout] 8e52e1fe45fc15ad9f9120033c913e6e31177e4d8093169485d86e9dc764843c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa96b810575aa01c580bb2582a895af2eed909d3025e83e7045c96e7a94ac1fa
[INFO] running `Command { std: "docker" "start" "-a" "aa96b810575aa01c580bb2582a895af2eed909d3025e83e7045c96e7a94ac1fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling tintin_rust_lesson_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name`, `age`, and `gender` are never read
[INFO] [stdout]  --> src/student.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Student {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 6 |     pub id:u32,
[INFO] [stdout] 7 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 8 |     pub age:u8,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 9 |     pub gender:Gender
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/club.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Club<'a>{
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 7 |     pub id:u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Club` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/class.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Class<'a> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 7 |     pub id:u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Class` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove` is never used
[INFO] [stdout]   --> src/class.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl <'a>Class<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn remove(&mut self, stu:&'a Student) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/course.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Course<'a> {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 7 |     pub id: u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Course` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove` is never used
[INFO] [stdout]   --> src/course.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<'a> Course<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn remove(&mut self, stu: &'a Student) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "aa96b810575aa01c580bb2582a895af2eed909d3025e83e7045c96e7a94ac1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa96b810575aa01c580bb2582a895af2eed909d3025e83e7045c96e7a94ac1fa", kill_on_drop: false }`
[INFO] [stdout] aa96b810575aa01c580bb2582a895af2eed909d3025e83e7045c96e7a94ac1fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea83cc72d750bcd715db9620e2e6a6f2f73443f3942f67748d3641282f105d9a
[INFO] running `Command { std: "docker" "start" "-a" "ea83cc72d750bcd715db9620e2e6a6f2f73443f3942f67748d3641282f105d9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling tintin_rust_lesson_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name`, `age`, and `gender` are never read
[INFO] [stdout]  --> src/student.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Student {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 6 |     pub id:u32,
[INFO] [stdout] 7 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 8 |     pub age:u8,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 9 |     pub gender:Gender
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/club.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Club<'a>{
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 7 |     pub id:u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Club` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/class.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Class<'a> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 7 |     pub id:u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name:String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Class` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove` is never used
[INFO] [stdout]   --> src/class.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl <'a>Class<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn remove(&mut self, stu:&'a Student) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `name` are never read
[INFO] [stdout]  --> src/course.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Course<'a> {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 7 |     pub id: u32,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 8 |     pub name: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Course` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove` is never used
[INFO] [stdout]   --> src/course.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<'a> Course<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn remove(&mut self, stu: &'a Student) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "ea83cc72d750bcd715db9620e2e6a6f2f73443f3942f67748d3641282f105d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea83cc72d750bcd715db9620e2e6a6f2f73443f3942f67748d3641282f105d9a", kill_on_drop: false }`
[INFO] [stdout] ea83cc72d750bcd715db9620e2e6a6f2f73443f3942f67748d3641282f105d9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 700cd1093161aca4c1c7346090c01ea0408dba7f208daa4304b6e7f9a8ce26c6
[INFO] running `Command { std: "docker" "start" "-a" "700cd1093161aca4c1c7346090c01ea0408dba7f208daa4304b6e7f9a8ce26c6", kill_on_drop: false }`
[INFO] [stderr] warning: fields `name`, `age`, and `gender` are never read
[INFO] [stderr]  --> src/student.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Student {
[INFO] [stderr]   |            ------- fields in this struct
[INFO] [stderr] 6 |     pub id:u32,
[INFO] [stderr] 7 |     pub name:String,
[INFO] [stderr]   |         ^^^^
[INFO] [stderr] 8 |     pub age:u8,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 9 |     pub gender:Gender
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `name` are never read
[INFO] [stderr]  --> src/club.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Club<'a>{
[INFO] [stderr]   |            ---- fields in this struct
[INFO] [stderr] 7 |     pub id:u32,
[INFO] [stderr]   |         ^^
[INFO] [stderr] 8 |     pub name:String,
[INFO] [stderr]   |         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Club` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `name` are never read
[INFO] [stderr]  --> src/class.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Class<'a> {
[INFO] [stderr]   |            ----- fields in this struct
[INFO] [stderr] 7 |     pub id:u32,
[INFO] [stderr]   |         ^^
[INFO] [stderr] 8 |     pub name:String,
[INFO] [stderr]   |         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Class` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `remove` is never used
[INFO] [stderr]   --> src/class.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl <'a>Class<'a> {
[INFO] [stderr]    | ------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 17 |     pub fn remove(&mut self, stu:&'a Student) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `name` are never read
[INFO] [stdout] 
[INFO] [stderr]  --> src/course.rs:7:9
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 6 | pub struct Course<'a> {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |            ------ fields in this struct
[INFO] [stdout] 
[INFO] [stderr] 7 |     pub id: u32,
[INFO] [stderr]   |         ^^
[INFO] [stderr] 8 |     pub name: String,
[INFO] [stderr]   |         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Course` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `remove` is never used
[INFO] [stderr]   --> src/course.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<'a> Course<'a> {
[INFO] [stderr]    | ------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 17 |     pub fn remove(&mut self, stu: &'a Student) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `tintin_rust_lesson_3` (bin "tintin_rust_lesson_3" test) generated 6 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tintin_rust_lesson_3-677c7da141e579e2)
[INFO] running `Command { std: "docker" "inspect" "700cd1093161aca4c1c7346090c01ea0408dba7f208daa4304b6e7f9a8ce26c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "700cd1093161aca4c1c7346090c01ea0408dba7f208daa4304b6e7f9a8ce26c6", kill_on_drop: false }`
[INFO] [stdout] 700cd1093161aca4c1c7346090c01ea0408dba7f208daa4304b6e7f9a8ce26c6
