[INFO] cloning repository https://github.com/jmerilai-oulu/lab3-lint
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmerilai-oulu/lab3-lint" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmerilai-oulu%2Flab3-lint", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmerilai-oulu%2Flab3-lint'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7046600a69746a8535fe8a0e3578a621c41cf125
[INFO] checking jmerilai-oulu/lab3-lint against master#092a284ba0421695f2032c947765429fd7095796 for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmerilai-oulu%2Flab3-lint" "/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/jmerilai-oulu/lab3-lint on toolchain 092a284ba0421695f2032c947765429fd7095796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmerilai-oulu/lab3-lint
[INFO] finished tweaking git repo https://github.com/jmerilai-oulu/lab3-lint
[INFO] tweaked toml for git repo https://github.com/jmerilai-oulu/lab3-lint written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jmerilai-oulu/lab3-lint 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" "+092a284ba0421695f2032c947765429fd7095796" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 832f2be0eff47473efe08a4da2155332d7fd5ef864f3523547679d8ff1dbbd05
[INFO] running `Command { std: "docker" "start" "-a" "832f2be0eff47473efe08a4da2155332d7fd5ef864f3523547679d8ff1dbbd05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "832f2be0eff47473efe08a4da2155332d7fd5ef864f3523547679d8ff1dbbd05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "832f2be0eff47473efe08a4da2155332d7fd5ef864f3523547679d8ff1dbbd05", kill_on_drop: false }`
[INFO] [stdout] 832f2be0eff47473efe08a4da2155332d7fd5ef864f3523547679d8ff1dbbd05
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+092a284ba0421695f2032c947765429fd7095796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14f3b92706418019731e8d1df1adf1949784f6ef7383e95db8a2c98626039ea4
[INFO] running `Command { std: "docker" "start" "-a" "14f3b92706418019731e8d1df1adf1949784f6ef7383e95db8a2c98626039ea4", kill_on_drop: false }`
[INFO] [stderr]     Checking lint v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `AskOperator` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn AskOperator() -> char {
[INFO] [stdout]   |    ^^^^^^^^^^^ help: convert the identifier to snake case: `ask_operator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Add` should have a snake case name
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn Add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^ help: convert the identifier to snake case: `add`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Subtract` should have a snake case name
[INFO] [stdout]   --> src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn Subtract(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `subtract`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Multiply` should have a snake case name
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn Multiply(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `multiply`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Divide` should have a snake case name
[INFO] [stdout]   --> src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn Divide(x: i32, y: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `divide`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `OPERATOR` should have a snake case name
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let OPERATOR = AskOperator();
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `AskOperator` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn AskOperator() -> char {
[INFO] [stdout]   |    ^^^^^^^^^^^ help: convert the identifier to snake case: `ask_operator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Add` should have a snake case name
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn Add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^ help: convert the identifier to snake case: `add`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Subtract` should have a snake case name
[INFO] [stdout]   --> src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn Subtract(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `subtract`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Multiply` should have a snake case name
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn Multiply(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `multiply`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Divide` should have a snake case name
[INFO] [stdout]   --> src/main.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn Divide(x: i32, y: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `divide`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `OPERATOR` should have a snake case name
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let OPERATOR = AskOperator();
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `operator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     io::stdout().flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let _ = io::stdout().flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "14f3b92706418019731e8d1df1adf1949784f6ef7383e95db8a2c98626039ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f3b92706418019731e8d1df1adf1949784f6ef7383e95db8a2c98626039ea4", kill_on_drop: false }`
[INFO] [stdout] 14f3b92706418019731e8d1df1adf1949784f6ef7383e95db8a2c98626039ea4