[INFO] fetching crate math-lib 0.1.0...
[INFO] checking math-lib-0.1.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate math-lib 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate math-lib 0.1.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate math-lib 0.1.0
[INFO] finished tweaking crates.io crate math-lib 0.1.0
[INFO] tweaked toml for crates.io crate math-lib 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d588c5ae7b08f9c79a5662d0dbe95cb2e88607fd1070a9f3b082dacb90697c8
[INFO] running `Command { std: "docker" "start" "-a" "1d588c5ae7b08f9c79a5662d0dbe95cb2e88607fd1070a9f3b082dacb90697c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d588c5ae7b08f9c79a5662d0dbe95cb2e88607fd1070a9f3b082dacb90697c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d588c5ae7b08f9c79a5662d0dbe95cb2e88607fd1070a9f3b082dacb90697c8", kill_on_drop: false }`
[INFO] [stdout] 1d588c5ae7b08f9c79a5662d0dbe95cb2e88607fd1070a9f3b082dacb90697c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 125bea7193f44d50927e02d92a9ec0ac451cef11863f53695c6a948599a1d205
[INFO] running `Command { std: "docker" "start" "-a" "125bea7193f44d50927e02d92a9ec0ac451cef11863f53695c6a948599a1d205", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking math-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `substraction`
[INFO] [stdout]  --> src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn substraction(x:i32,y:i32)->i32
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiplication`
[INFO] [stdout]  --> src/lib.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn multiplication(x:i32,y:i32)->i32
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `division`
[INFO] [stdout]   --> src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn division(x:i32,y:i32)->i32
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reminder`
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn reminder(x:i32,y:i32)->i32
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     io::stdin().read_line(&mut num1);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     io::stdin().read_line(&mut num2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `substraction`
[INFO] [stdout]  --> src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn substraction(x:i32,y:i32)->i32
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiplication`
[INFO] [stdout]  --> src/lib.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn multiplication(x:i32,y:i32)->i32
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `division`
[INFO] [stdout]   --> src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn division(x:i32,y:i32)->i32
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reminder`
[INFO] [stdout]   --> src/lib.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn reminder(x:i32,y:i32)->i32
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     io::stdin().read_line(&mut num1);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     io::stdin().read_line(&mut num2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "125bea7193f44d50927e02d92a9ec0ac451cef11863f53695c6a948599a1d205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "125bea7193f44d50927e02d92a9ec0ac451cef11863f53695c6a948599a1d205", kill_on_drop: false }`
[INFO] [stdout] 125bea7193f44d50927e02d92a9ec0ac451cef11863f53695c6a948599a1d205
