Dec 13 16:39:24.726 INFO testing intrepion/example-x-rust-x-rustbyexample-com-x-primitives against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 16:39:24.726 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 16:39:24.883 INFO [stdout] 29882f1973cee387e55a8637ee2fd9e6d518f277fb7110c5d88d187a04cbd0ce
Dec 13 16:39:24.888 INFO running `"docker" "start" "-a" "29882f1973cee387e55a8637ee2fd9e6d518f277fb7110c5d88d187a04cbd0ce"`
Dec 13 16:39:25.221 INFO [stderr] usermod: no changes
Dec 13 16:39:25.257 INFO [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-primitives v0.1.0 (/source)
Dec 13 16:39:25.518 INFO [stderr] warning: unused variable: `logical`
Dec 13 16:39:25.518 INFO [stderr]  --> src/main.rs:3:9
Dec 13 16:39:25.518 INFO [stderr]   |
Dec 13 16:39:25.518 INFO [stderr] 3 |     let logical: bool = true;
Dec 13 16:39:25.518 INFO [stderr]   |         ^^^^^^^ help: consider using `_logical` instead
Dec 13 16:39:25.518 INFO [stderr]   |
Dec 13 16:39:25.518 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 16:39:25.518 INFO [stderr] 
Dec 13 16:39:25.518 INFO [stderr] warning: unused variable: `a_float`
Dec 13 16:39:25.518 INFO [stderr]  --> src/main.rs:5:9
Dec 13 16:39:25.518 INFO [stderr]   |
Dec 13 16:39:25.518 INFO [stderr] 5 |     let a_float: f64 = 1.0;  // Regular annotation
Dec 13 16:39:25.518 INFO [stderr]   |         ^^^^^^^ help: consider using `_a_float` instead
Dec 13 16:39:25.518 INFO [stderr] 
Dec 13 16:39:25.518 INFO [stderr] warning: unused variable: `an_integer`
Dec 13 16:39:25.518 INFO [stderr]  --> src/main.rs:6:9
Dec 13 16:39:25.518 INFO [stderr]   |
Dec 13 16:39:25.518 INFO [stderr] 6 |     let an_integer   = 5i32; // Suffix annotation
Dec 13 16:39:25.518 INFO [stderr]   |         ^^^^^^^^^^ help: consider using `_an_integer` instead
Dec 13 16:39:25.518 INFO [stderr] 
Dec 13 16:39:25.518 INFO [stderr] warning: unused variable: `default_float`
Dec 13 16:39:25.518 INFO [stderr]  --> src/main.rs:9:9
Dec 13 16:39:25.518 INFO [stderr]   |
Dec 13 16:39:25.518 INFO [stderr] 9 |     let default_float   = 3.0; // `f64`
Dec 13 16:39:25.518 INFO [stderr]   |         ^^^^^^^^^^^^^ help: consider using `_default_float` instead
Dec 13 16:39:25.518 INFO [stderr] 
Dec 13 16:39:25.519 INFO [stderr] warning: unused variable: `default_integer`
Dec 13 16:39:25.519 INFO [stderr]   --> src/main.rs:10:9
Dec 13 16:39:25.519 INFO [stderr]    |
Dec 13 16:39:25.519 INFO [stderr] 10 |     let default_integer = 7;   // `i32`
Dec 13 16:39:25.519 INFO [stderr]    |         ^^^^^^^^^^^^^^^ help: consider using `_default_integer` instead
Dec 13 16:39:25.519 INFO [stderr] 
Dec 13 16:39:25.519 INFO [stderr] warning: unused variable: `mutable`
Dec 13 16:39:25.519 INFO [stderr]   --> src/main.rs:12:13
Dec 13 16:39:25.519 INFO [stderr]    |
Dec 13 16:39:25.519 INFO [stderr] 12 |     let mut mutable = 12; // Mutable `i32`.
Dec 13 16:39:25.519 INFO [stderr]    |             ^^^^^^^ help: consider using `_mutable` instead
Dec 13 16:39:25.519 INFO [stderr] 
Dec 13 16:39:25.519 INFO [stderr] warning: variable does not need to be mutable
Dec 13 16:39:25.519 INFO [stderr]   --> src/main.rs:12:9
Dec 13 16:39:25.519 INFO [stderr]    |
Dec 13 16:39:25.519 INFO [stderr] 12 |     let mut mutable = 12; // Mutable `i32`.
Dec 13 16:39:25.519 INFO [stderr]    |         ----^^^^^^^
Dec 13 16:39:25.519 INFO [stderr]    |         |
Dec 13 16:39:25.519 INFO [stderr]    |         help: remove this `mut`
Dec 13 16:39:25.519 INFO [stderr]    |
Dec 13 16:39:25.519 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 16:39:25.519 INFO [stderr] 
Dec 13 16:39:25.668 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 13 16:39:25.671 INFO [stderr] su: No module specific data is present
Dec 13 16:39:25.925 INFO running `"docker" "inspect" "29882f1973cee387e55a8637ee2fd9e6d518f277fb7110c5d88d187a04cbd0ce"`
Dec 13 16:39:26.018 INFO running `"docker" "rm" "-f" "29882f1973cee387e55a8637ee2fd9e6d518f277fb7110c5d88d187a04cbd0ce"`
Dec 13 16:39:26.158 INFO [stdout] 29882f1973cee387e55a8637ee2fd9e6d518f277fb7110c5d88d187a04cbd0ce
Dec 13 16:39:26.160 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 16:39:26.310 INFO [stdout] c2801a67228fa65ceca13ff42ac1daa5aa33a108d1e9d0eef7cdbf9e925e089e
Dec 13 16:39:26.312 INFO running `"docker" "start" "-a" "c2801a67228fa65ceca13ff42ac1daa5aa33a108d1e9d0eef7cdbf9e925e089e"`
Dec 13 16:39:26.689 INFO [stderr] usermod: no changes
Dec 13 16:39:26.718 INFO [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-primitives v0.1.0 (/source)
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `logical`
Dec 13 16:39:27.061 INFO [stderr]  --> src/main.rs:3:9
Dec 13 16:39:27.061 INFO [stderr]   |
Dec 13 16:39:27.061 INFO [stderr] 3 |     let logical: bool = true;
Dec 13 16:39:27.061 INFO [stderr]   |         ^^^^^^^ help: consider using `_logical` instead
Dec 13 16:39:27.061 INFO [stderr]   |
Dec 13 16:39:27.061 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `a_float`
Dec 13 16:39:27.061 INFO [stderr]  --> src/main.rs:5:9
Dec 13 16:39:27.061 INFO [stderr]   |
Dec 13 16:39:27.061 INFO [stderr] 5 |     let a_float: f64 = 1.0;  // Regular annotation
Dec 13 16:39:27.061 INFO [stderr]   |         ^^^^^^^ help: consider using `_a_float` instead
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `an_integer`
Dec 13 16:39:27.061 INFO [stderr]  --> src/main.rs:6:9
Dec 13 16:39:27.061 INFO [stderr]   |
Dec 13 16:39:27.061 INFO [stderr] 6 |     let an_integer   = 5i32; // Suffix annotation
Dec 13 16:39:27.061 INFO [stderr]   |         ^^^^^^^^^^ help: consider using `_an_integer` instead
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `default_float`
Dec 13 16:39:27.061 INFO [stderr]  --> src/main.rs:9:9
Dec 13 16:39:27.061 INFO [stderr]   |
Dec 13 16:39:27.061 INFO [stderr] 9 |     let default_float   = 3.0; // `f64`
Dec 13 16:39:27.061 INFO [stderr]   |         ^^^^^^^^^^^^^ help: consider using `_default_float` instead
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `default_integer`
Dec 13 16:39:27.061 INFO [stderr]   --> src/main.rs:10:9
Dec 13 16:39:27.061 INFO [stderr]    |
Dec 13 16:39:27.061 INFO [stderr] 10 |     let default_integer = 7;   // `i32`
Dec 13 16:39:27.061 INFO [stderr]    |         ^^^^^^^^^^^^^^^ help: consider using `_default_integer` instead
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.061 INFO [stderr] warning: unused variable: `mutable`
Dec 13 16:39:27.061 INFO [stderr]   --> src/main.rs:12:13
Dec 13 16:39:27.061 INFO [stderr]    |
Dec 13 16:39:27.061 INFO [stderr] 12 |     let mut mutable = 12; // Mutable `i32`.
Dec 13 16:39:27.061 INFO [stderr]    |             ^^^^^^^ help: consider using `_mutable` instead
Dec 13 16:39:27.061 INFO [stderr] 
Dec 13 16:39:27.062 INFO [stderr] warning: variable does not need to be mutable
Dec 13 16:39:27.062 INFO [stderr]   --> src/main.rs:12:9
Dec 13 16:39:27.062 INFO [stderr]    |
Dec 13 16:39:27.062 INFO [stderr] 12 |     let mut mutable = 12; // Mutable `i32`.
Dec 13 16:39:27.062 INFO [stderr]    |         ----^^^^^^^
Dec 13 16:39:27.062 INFO [stderr]    |         |
Dec 13 16:39:27.062 INFO [stderr]    |         help: remove this `mut`
Dec 13 16:39:27.062 INFO [stderr]    |
Dec 13 16:39:27.062 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 16:39:27.062 INFO [stderr] 
Dec 13 16:39:27.275 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 13 16:39:27.277 INFO [stderr] su: No module specific data is present
Dec 13 16:39:27.523 INFO running `"docker" "inspect" "c2801a67228fa65ceca13ff42ac1daa5aa33a108d1e9d0eef7cdbf9e925e089e"`
Dec 13 16:39:27.645 INFO running `"docker" "rm" "-f" "c2801a67228fa65ceca13ff42ac1daa5aa33a108d1e9d0eef7cdbf9e925e089e"`
Dec 13 16:39:27.758 INFO [stdout] c2801a67228fa65ceca13ff42ac1daa5aa33a108d1e9d0eef7cdbf9e925e089e
Dec 13 16:39:27.760 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 16:39:27.940 INFO [stdout] 85afeb0b9444fa9b09137c80607958b99caf066c2eedd5fe00687bc12d9da91c
Dec 13 16:39:27.942 INFO running `"docker" "start" "-a" "85afeb0b9444fa9b09137c80607958b99caf066c2eedd5fe00687bc12d9da91c"`
Dec 13 16:39:28.425 INFO [stderr] usermod: no changes
Dec 13 16:39:28.444 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 16:39:28.444 INFO [stderr]      Running /target/debug/deps/example_x_rust_x_rustbyexample_com_x_primitives-32aef70be8232a19
Dec 13 16:39:28.447 INFO [stdout] 
Dec 13 16:39:28.447 INFO [stdout] running 0 tests
Dec 13 16:39:28.447 INFO [stdout] 
Dec 13 16:39:28.447 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 16:39:28.447 INFO [stdout] 
Dec 13 16:39:28.447 INFO [stderr] su: No module specific data is present
Dec 13 16:39:28.679 INFO running `"docker" "inspect" "85afeb0b9444fa9b09137c80607958b99caf066c2eedd5fe00687bc12d9da91c"`
Dec 13 16:39:28.887 INFO running `"docker" "rm" "-f" "85afeb0b9444fa9b09137c80607958b99caf066c2eedd5fe00687bc12d9da91c"`
Dec 13 16:39:28.946 INFO [stdout] 85afeb0b9444fa9b09137c80607958b99caf066c2eedd5fe00687bc12d9da91c