[INFO] cloning repository https://github.com/Magowtham/biometric_attendence_system
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55ccba044640edab21203468941abe485b3382c4
[INFO] building Magowtham/biometric_attendence_system against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagowtham%2Fbiometric_attendence_system" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Magowtham/biometric_attendence_system on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
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[INFO] started tweaking git repo https://github.com/Magowtham/biometric_attendence_system
[INFO] finished tweaking git repo https://github.com/Magowtham/biometric_attendence_system
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[INFO] crate git repo https://github.com/Magowtham/biometric_attendence_system already has a lockfile, it will not be regenerated
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[INFO] [stderr]    Compiling finger_print_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `client` is never read
[INFO] [stdout]  --> src/mqtt/operations.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MqttService {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 9 |     pub client:AsyncClient,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `db` is never read
[INFO] [stdout]  --> src/db/operations.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MongoDBService {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 8 |     pub db:Database,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update_student_doc` is never used
[INFO] [stdout]   --> src/db/operations.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MongoDBService {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub async fn update_student_doc(self:&Self){
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `reg_number`, `department`, `attend_percentage`, and `attended_classes` are never read
[INFO] [stdout]  --> src/models/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Student {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 2 |     name:String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     reg_number:String,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     department:String,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     attend_percentage:f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     attended_classes:u32,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "e4a81a01640edcbb9472ffb3529b9f92087588ced88db0c7865deddc2410f4be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4a81a01640edcbb9472ffb3529b9f92087588ced88db0c7865deddc2410f4be", kill_on_drop: false }`
[INFO] [stdout] e4a81a01640edcbb9472ffb3529b9f92087588ced88db0c7865deddc2410f4be
[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=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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e142b4e202a6e2f3d744863c483ae0e3040ef16d9c221657999e22464bfc5b79
[INFO] running `Command { std: "docker" "start" "-a" "e142b4e202a6e2f3d744863c483ae0e3040ef16d9c221657999e22464bfc5b79", kill_on_drop: false }`
[INFO] [stderr]    Compiling finger_print_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `client` is never read
[INFO] [stdout]  --> src/mqtt/operations.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MqttService {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 9 |     pub client:AsyncClient,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `db` is never read
[INFO] [stdout]  --> src/db/operations.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MongoDBService {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 8 |     pub db:Database,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update_student_doc` is never used
[INFO] [stdout]   --> src/db/operations.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MongoDBService {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub async fn update_student_doc(self:&Self){
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `reg_number`, `department`, `attend_percentage`, and `attended_classes` are never read
[INFO] [stdout]  --> src/models/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Student {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 2 |     name:String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     reg_number:String,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 4 |     department:String,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     attend_percentage:f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     attended_classes:u32,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "e142b4e202a6e2f3d744863c483ae0e3040ef16d9c221657999e22464bfc5b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e142b4e202a6e2f3d744863c483ae0e3040ef16d9c221657999e22464bfc5b79", kill_on_drop: false }`
[INFO] [stdout] e142b4e202a6e2f3d744863c483ae0e3040ef16d9c221657999e22464bfc5b79