Dec 04 17:13:02.536 INFO checking intrepion/example-x-rust-x-rustbyexample-com-x-std-result against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 17:13:02.536 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 17:13:02.745 INFO [stdout] 3319ef56d6bfe7da8ffaf83f0a04591e2f4d95ba73e9a36833dc2c7f86c0d9ef
Dec 04 17:13:02.747 INFO running `"docker" "start" "-a" "3319ef56d6bfe7da8ffaf83f0a04591e2f4d95ba73e9a36833dc2c7f86c0d9ef"`
Dec 04 17:13:03.230 INFO [stderr] usermod: no changes
Dec 04 17:13:03.264 INFO [stderr]     Checking example-x-rust-x-rustbyexample-com-x-std-result v0.1.0 (/source)
Dec 04 17:13:03.580 INFO [stderr] warning: enum is never used: `MathError`
Dec 04 17:13:03.580 INFO [stderr]  --> src/main.rs:4:5
Dec 04 17:13:03.580 INFO [stderr]   |
Dec 04 17:13:03.580 INFO [stderr] 4 |     pub enum MathError {
Dec 04 17:13:03.580 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr]   |
Dec 04 17:13:03.580 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.580 INFO [stderr] warning: type alias is never used: `MathResult`
Dec 04 17:13:03.580 INFO [stderr]   --> src/main.rs:10:5
Dec 04 17:13:03.580 INFO [stderr]    |
Dec 04 17:13:03.580 INFO [stderr] 10 |     pub type MathResult = Result<f64, MathError>;
Dec 04 17:13:03.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.580 INFO [stderr] warning: function is never used: `div`
Dec 04 17:13:03.580 INFO [stderr]   --> src/main.rs:12:5
Dec 04 17:13:03.580 INFO [stderr]    |
Dec 04 17:13:03.580 INFO [stderr] 12 |     pub fn div(x: f64, y: f64) -> MathResult {
Dec 04 17:13:03.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.580 INFO [stderr] warning: function is never used: `sqrt`
Dec 04 17:13:03.580 INFO [stderr]   --> src/main.rs:23:5
Dec 04 17:13:03.580 INFO [stderr]    |
Dec 04 17:13:03.580 INFO [stderr] 23 |     pub fn sqrt(x: f64) -> MathResult {
Dec 04 17:13:03.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.580 INFO [stderr] warning: function is never used: `ln`
Dec 04 17:13:03.580 INFO [stderr]   --> src/main.rs:31:5
Dec 04 17:13:03.580 INFO [stderr]    |
Dec 04 17:13:03.580 INFO [stderr] 31 |     pub fn ln(x: f64) -> MathResult {
Dec 04 17:13:03.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.580 INFO [stderr] warning: function is never used: `op`
Dec 04 17:13:03.580 INFO [stderr]   --> src/main.rs:41:1
Dec 04 17:13:03.580 INFO [stderr]    |
Dec 04 17:13:03.580 INFO [stderr] 41 | fn op(x: f64, y: f64) -> f64 {
Dec 04 17:13:03.580 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.580 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: enum is never used: `MathError`
Dec 04 17:13:03.659 INFO [stderr]  --> src/main.rs:4:5
Dec 04 17:13:03.659 INFO [stderr]   |
Dec 04 17:13:03.659 INFO [stderr] 4 |     pub enum MathError {
Dec 04 17:13:03.659 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr]   |
Dec 04 17:13:03.659 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: type alias is never used: `MathResult`
Dec 04 17:13:03.659 INFO [stderr]   --> src/main.rs:10:5
Dec 04 17:13:03.659 INFO [stderr]    |
Dec 04 17:13:03.659 INFO [stderr] 10 |     pub type MathResult = Result<f64, MathError>;
Dec 04 17:13:03.659 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: function is never used: `div`
Dec 04 17:13:03.659 INFO [stderr]   --> src/main.rs:12:5
Dec 04 17:13:03.659 INFO [stderr]    |
Dec 04 17:13:03.659 INFO [stderr] 12 |     pub fn div(x: f64, y: f64) -> MathResult {
Dec 04 17:13:03.659 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: function is never used: `sqrt`
Dec 04 17:13:03.659 INFO [stderr]   --> src/main.rs:23:5
Dec 04 17:13:03.659 INFO [stderr]    |
Dec 04 17:13:03.659 INFO [stderr] 23 |     pub fn sqrt(x: f64) -> MathResult {
Dec 04 17:13:03.659 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: function is never used: `ln`
Dec 04 17:13:03.659 INFO [stderr]   --> src/main.rs:31:5
Dec 04 17:13:03.659 INFO [stderr]    |
Dec 04 17:13:03.659 INFO [stderr] 31 |     pub fn ln(x: f64) -> MathResult {
Dec 04 17:13:03.659 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.659 INFO [stderr] warning: function is never used: `op`
Dec 04 17:13:03.659 INFO [stderr]   --> src/main.rs:41:1
Dec 04 17:13:03.659 INFO [stderr]    |
Dec 04 17:13:03.659 INFO [stderr] 41 | fn op(x: f64, y: f64) -> f64 {
Dec 04 17:13:03.659 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:13:03.659 INFO [stderr] 
Dec 04 17:13:03.668 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 04 17:13:03.670 INFO [stderr] su: No module specific data is present
Dec 04 17:13:03.920 INFO running `"docker" "inspect" "3319ef56d6bfe7da8ffaf83f0a04591e2f4d95ba73e9a36833dc2c7f86c0d9ef"`
Dec 04 17:13:04.120 INFO running `"docker" "rm" "-f" "3319ef56d6bfe7da8ffaf83f0a04591e2f4d95ba73e9a36833dc2c7f86c0d9ef"`
Dec 04 17:13:04.215 INFO [stdout] 3319ef56d6bfe7da8ffaf83f0a04591e2f4d95ba73e9a36833dc2c7f86c0d9ef