[INFO] cloning repository https://github.com/newtoallofthis123/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/newtoallofthis123/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewtoallofthis123%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewtoallofthis123%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e2cdc9b594d5b2f9f90a8012b6e351fdba05947
[INFO] checking newtoallofthis123/rust-learning against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewtoallofthis123%2Frust-learning" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/newtoallofthis123/rust-learning on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/newtoallofthis123/rust-learning
[INFO] finished tweaking git repo https://github.com/newtoallofthis123/rust-learning
[INFO] tweaked toml for git repo https://github.com/newtoallofthis123/rust-learning written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/newtoallofthis123/rust-learning 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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "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-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b31fae00bedf27832b49060abf03bfd16fe3076774148a6236cf9a6313d5b66
[INFO] running `Command { std: "docker" "start" "-a" "6b31fae00bedf27832b49060abf03bfd16fe3076774148a6236cf9a6313d5b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b31fae00bedf27832b49060abf03bfd16fe3076774148a6236cf9a6313d5b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b31fae00bedf27832b49060abf03bfd16fe3076774148a6236cf9a6313d5b66", kill_on_drop: false }`
[INFO] [stdout] 6b31fae00bedf27832b49060abf03bfd16fe3076774148a6236cf9a6313d5b66
[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=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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a0301574503bb648870a842f7de5702aa83b44857f3800850c675859b4efa49
[INFO] running `Command { std: "docker" "start" "-a" "1a0301574503bb648870a842f7de5702aa83b44857f3800850c675859b4efa49", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name`, `marks`, `grade`, and `class` are never read
[INFO] [stdout]  --> src/programs/system/sys.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Student{
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 4 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     marks: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     grade: f32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     class: String
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `view` is never used
[INFO] [stdout]   --> src/programs/system/sys.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn view(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `marks`, `grade`, and `class` are never read
[INFO] [stdout]  --> src/programs/system/sys.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Student{
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 4 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 5 |     marks: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     grade: f32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     class: String
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `view` is never used
[INFO] [stdout]   --> src/programs/system/sys.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn view(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "1a0301574503bb648870a842f7de5702aa83b44857f3800850c675859b4efa49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a0301574503bb648870a842f7de5702aa83b44857f3800850c675859b4efa49", kill_on_drop: false }`
[INFO] [stdout] 1a0301574503bb648870a842f7de5702aa83b44857f3800850c675859b4efa49