Oct 12 20:18:33.322 INFO checking intrepion/example-x-rust-x-rustbyexample-com-x-std-result against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 20:18:33.322 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 12 20:18:33.523 INFO blam! 82484e72af0eb4719a57e9426fbb297602cf0fa6f540626bd44df5e22a16fb87
Oct 12 20:18:33.524 INFO running `"docker" "start" "-a" "82484e72af0eb4719a57e9426fbb297602cf0fa6f540626bd44df5e22a16fb87"`
Oct 12 20:18:33.980 INFO kablam! usermod: no changes
Oct 12 20:18:34.020 INFO kablam!     Checking example-x-rust-x-rustbyexample-com-x-std-result v0.1.0 (/source)
Oct 12 20:18:34.388 INFO kablam! warning: enum is never used: `MathError`
Oct 12 20:18:34.388 INFO kablam!  --> src/main.rs:4:5
Oct 12 20:18:34.388 INFO kablam!   |
Oct 12 20:18:34.388 INFO kablam! 4 |     pub enum MathError {
Oct 12 20:18:34.388 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam!   |
Oct 12 20:18:34.388 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.388 INFO kablam! warning: type alias is never used: `MathResult`
Oct 12 20:18:34.388 INFO kablam!   --> src/main.rs:10:5
Oct 12 20:18:34.388 INFO kablam!    |
Oct 12 20:18:34.388 INFO kablam! 10 |     pub type MathResult = Result<f64, MathError>;
Oct 12 20:18:34.388 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.388 INFO kablam! warning: function is never used: `div`
Oct 12 20:18:34.388 INFO kablam!   --> src/main.rs:12:5
Oct 12 20:18:34.388 INFO kablam!    |
Oct 12 20:18:34.388 INFO kablam! 12 |     pub fn div(x: f64, y: f64) -> MathResult {
Oct 12 20:18:34.388 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.388 INFO kablam! warning: function is never used: `sqrt`
Oct 12 20:18:34.388 INFO kablam!   --> src/main.rs:23:5
Oct 12 20:18:34.388 INFO kablam!    |
Oct 12 20:18:34.388 INFO kablam! 23 |     pub fn sqrt(x: f64) -> MathResult {
Oct 12 20:18:34.388 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.388 INFO kablam! warning: function is never used: `ln`
Oct 12 20:18:34.388 INFO kablam!   --> src/main.rs:31:5
Oct 12 20:18:34.388 INFO kablam!    |
Oct 12 20:18:34.388 INFO kablam! 31 |     pub fn ln(x: f64) -> MathResult {
Oct 12 20:18:34.388 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.388 INFO kablam! warning: function is never used: `op`
Oct 12 20:18:34.388 INFO kablam!   --> src/main.rs:41:1
Oct 12 20:18:34.388 INFO kablam!    |
Oct 12 20:18:34.388 INFO kablam! 41 | fn op(x: f64, y: f64) -> f64 {
Oct 12 20:18:34.388 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.388 INFO kablam! 
Oct 12 20:18:34.427 INFO kablam! warning: enum is never used: `MathError`
Oct 12 20:18:34.427 INFO kablam!  --> src/main.rs:4:5
Oct 12 20:18:34.427 INFO kablam!   |
Oct 12 20:18:34.427 INFO kablam! 4 |     pub enum MathError {
Oct 12 20:18:34.427 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.427 INFO kablam!   |
Oct 12 20:18:34.427 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 20:18:34.427 INFO kablam! 
Oct 12 20:18:34.427 INFO kablam! warning: type alias is never used: `MathResult`
Oct 12 20:18:34.427 INFO kablam!   --> src/main.rs:10:5
Oct 12 20:18:34.427 INFO kablam!    |
Oct 12 20:18:34.427 INFO kablam! 10 |     pub type MathResult = Result<f64, MathError>;
Oct 12 20:18:34.427 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.427 INFO kablam! 
Oct 12 20:18:34.427 INFO kablam! warning: function is never used: `div`
Oct 12 20:18:34.427 INFO kablam!   --> src/main.rs:12:5
Oct 12 20:18:34.427 INFO kablam!    |
Oct 12 20:18:34.427 INFO kablam! 12 |     pub fn div(x: f64, y: f64) -> MathResult {
Oct 12 20:18:34.427 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.427 INFO kablam! 
Oct 12 20:18:34.427 INFO kablam! warning: function is never used: `sqrt`
Oct 12 20:18:34.427 INFO kablam!   --> src/main.rs:23:5
Oct 12 20:18:34.427 INFO kablam!    |
Oct 12 20:18:34.427 INFO kablam! 23 |     pub fn sqrt(x: f64) -> MathResult {
Oct 12 20:18:34.427 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.427 INFO kablam! 
Oct 12 20:18:34.427 INFO kablam! warning: function is never used: `ln`
Oct 12 20:18:34.427 INFO kablam!   --> src/main.rs:31:5
Oct 12 20:18:34.427 INFO kablam!    |
Oct 12 20:18:34.428 INFO kablam! 31 |     pub fn ln(x: f64) -> MathResult {
Oct 12 20:18:34.428 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.428 INFO kablam! 
Oct 12 20:18:34.428 INFO kablam! warning: function is never used: `op`
Oct 12 20:18:34.428 INFO kablam!   --> src/main.rs:41:1
Oct 12 20:18:34.428 INFO kablam!    |
Oct 12 20:18:34.428 INFO kablam! 41 | fn op(x: f64, y: f64) -> f64 {
Oct 12 20:18:34.428 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:18:34.428 INFO kablam! 
Oct 12 20:18:34.438 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Oct 12 20:18:34.442 INFO kablam! su: No module specific data is present
Oct 12 20:18:34.668 INFO running `"docker" "rm" "-f" "82484e72af0eb4719a57e9426fbb297602cf0fa6f540626bd44df5e22a16fb87"`
Oct 12 20:18:34.738 INFO blam! 82484e72af0eb4719a57e9426fbb297602cf0fa6f540626bd44df5e22a16fb87