[INFO] cloning repository https://github.com/noorshaik95/student-crud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noorshaik95/student-crud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoorshaik95%2Fstudent-crud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoorshaik95%2Fstudent-crud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35ff4f1aa35b49300f7cc7dae7b582e7cae49711
[INFO] testing noorshaik95/student-crud against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoorshaik95%2Fstudent-crud" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noorshaik95/student-crud
[INFO] finished tweaking git repo https://github.com/noorshaik95/student-crud
[INFO] tweaked toml for git repo https://github.com/noorshaik95/student-crud written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noorshaik95/student-crud on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noorshaik95/student-crud 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cd40be91f0a21cc6910cb3e24180f1a4e585cd83823d68ef51145f44cf00803
[INFO] running `Command { std: "docker" "start" "-a" "9cd40be91f0a21cc6910cb3e24180f1a4e585cd83823d68ef51145f44cf00803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cd40be91f0a21cc6910cb3e24180f1a4e585cd83823d68ef51145f44cf00803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cd40be91f0a21cc6910cb3e24180f1a4e585cd83823d68ef51145f44cf00803", kill_on_drop: false }`
[INFO] [stdout] 9cd40be91f0a21cc6910cb3e24180f1a4e585cd83823d68ef51145f44cf00803
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9372f154a68d498e537f102a7a9b7072da0f526cb27c61fe28f64684692e849
[INFO] running `Command { std: "docker" "start" "-a" "b9372f154a68d498e537f102a7a9b7072da0f526cb27c61fe28f64684692e849", kill_on_drop: false }`
[INFO] [stderr]    Compiling student-crud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:164:16
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn add_student(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                ----^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn update_student_grades(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                          ----^^^^^^^^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut student_index: Option<usize> = find_student_index(&students, name);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:228:24
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn input_courses_grade(mut courses: &mut Vec<CourseGrade>) {
[INFO] [stdout]     |                        ----^^^^^^^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:253:19
[INFO] [stdout]     |
[INFO] [stdout] 253 | fn delete_student(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                   ----^^^^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "b9372f154a68d498e537f102a7a9b7072da0f526cb27c61fe28f64684692e849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9372f154a68d498e537f102a7a9b7072da0f526cb27c61fe28f64684692e849", kill_on_drop: false }`
[INFO] [stdout] b9372f154a68d498e537f102a7a9b7072da0f526cb27c61fe28f64684692e849
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 368431c000ee3398b6f90a82262b7a82f57308efba0b51f7f59be0bf7cd51996
[INFO] running `Command { std: "docker" "start" "-a" "368431c000ee3398b6f90a82262b7a82f57308efba0b51f7f59be0bf7cd51996", kill_on_drop: false }`
[INFO] [stderr]    Compiling student-crud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:164:16
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn add_student(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                ----^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn update_student_grades(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                          ----^^^^^^^^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut student_index: Option<usize> = find_student_index(&students, name);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:228:24
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn input_courses_grade(mut courses: &mut Vec<CourseGrade>) {
[INFO] [stdout]     |                        ----^^^^^^^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:253:19
[INFO] [stdout]     |
[INFO] [stdout] 253 | fn delete_student(mut students: &mut Vec<Student>) {
[INFO] [stdout]     |                   ----^^^^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "368431c000ee3398b6f90a82262b7a82f57308efba0b51f7f59be0bf7cd51996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368431c000ee3398b6f90a82262b7a82f57308efba0b51f7f59be0bf7cd51996", kill_on_drop: false }`
[INFO] [stdout] 368431c000ee3398b6f90a82262b7a82f57308efba0b51f7f59be0bf7cd51996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eb9990d83e28be88868c2a8bc51916493048a1638bc8013df437545f129b21ab
[INFO] running `Command { std: "docker" "start" "-a" "eb9990d83e28be88868c2a8bc51916493048a1638bc8013df437545f129b21ab", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:164:16
[INFO] [stderr]     |
[INFO] [stderr] 164 | fn add_student(mut students: &mut Vec<Student>) {
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:194:26
[INFO] [stderr]     |
[INFO] [stderr] 194 | fn update_student_grades(mut students: &mut Vec<Student>) {
[INFO] [stderr]     |                          ----^^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |         let mut student_index: Option<usize> = find_student_index(&students, name);
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:228:24
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn input_courses_grade(mut courses: &mut Vec<CourseGrade>) {
[INFO] [stderr]     |                        ----^^^^^^^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:253:19
[INFO] [stderr]     |
[INFO] [stderr] 253 | fn delete_student(mut students: &mut Vec<Student>) {
[INFO] [stderr]     |                   ----^^^^^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `student-crud` (bin "student-crud" test) generated 5 warnings (run `cargo fix --bin "student-crud" --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/student_crud-18da82c4c0aac7d0)
[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" "eb9990d83e28be88868c2a8bc51916493048a1638bc8013df437545f129b21ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9990d83e28be88868c2a8bc51916493048a1638bc8013df437545f129b21ab", kill_on_drop: false }`
[INFO] [stdout] eb9990d83e28be88868c2a8bc51916493048a1638bc8013df437545f129b21ab
