Dec 05 03:50:50.331 INFO testing tperdue321/rust_basics against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 03:50:50.331 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 03:50:50.507 INFO [stdout] 7489526be8872ca8167131b4d28d646d69fb8ac94aab764295a1eefe460aeb93
Dec 05 03:50:50.509 INFO running `"docker" "start" "-a" "7489526be8872ca8167131b4d28d646d69fb8ac94aab764295a1eefe460aeb93"`
Dec 05 03:50:50.920 INFO [stderr] usermod: no changes
Dec 05 03:50:50.954 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 05 03:50:51.093 INFO [stderr] warning: unused variable: `a`
Dec 05 03:50:51.093 INFO [stderr]  --> src/main.rs:9:9
Dec 05 03:50:51.093 INFO [stderr]   |
Dec 05 03:50:51.093 INFO [stderr] 9 |     let a: i32 = 1;
Dec 05 03:50:51.093 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 05 03:50:51.093 INFO [stderr]   |
Dec 05 03:50:51.093 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:14:13
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 05 03:50:51.093 INFO [stderr]    |             ^
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr]    = note: consider using `_b` instead
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: value assigned to `b` is never read
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:15:5
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 15 |     b = 25;
Dec 05 03:50:51.093 INFO [stderr]    |     ^
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:17:9
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 05 03:50:51.093 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: value assigned to `x` is never read
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:38:13
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 05 03:50:51.093 INFO [stderr]    |             ^
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:42:9
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 42 |     let y = 4;
Dec 05 03:50:51.093 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:45:9
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 05 03:50:51.093 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:60:9
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 05 03:50:51.093 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.093 INFO [stderr] warning: function is never used: `diverges`
Dec 05 03:50:51.093 INFO [stderr]   --> src/main.rs:93:1
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr] 93 | fn diverges() -> ! {
Dec 05 03:50:51.093 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 03:50:51.093 INFO [stderr]    |
Dec 05 03:50:51.093 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:50:51.093 INFO [stderr] 
Dec 05 03:50:51.253 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
Dec 05 03:50:51.256 INFO [stderr] su: No module specific data is present
Dec 05 03:50:51.694 INFO running `"docker" "inspect" "7489526be8872ca8167131b4d28d646d69fb8ac94aab764295a1eefe460aeb93"`
Dec 05 03:50:51.864 INFO running `"docker" "rm" "-f" "7489526be8872ca8167131b4d28d646d69fb8ac94aab764295a1eefe460aeb93"`
Dec 05 03:50:52.128 INFO [stdout] 7489526be8872ca8167131b4d28d646d69fb8ac94aab764295a1eefe460aeb93
Dec 05 03:50:52.138 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 03:50:52.344 INFO [stdout] 10ff58bf89d3df9b29a4d4e2523368907472e0d1ae5c04fd739cc40ff34c21c2
Dec 05 03:50:52.349 INFO running `"docker" "start" "-a" "10ff58bf89d3df9b29a4d4e2523368907472e0d1ae5c04fd739cc40ff34c21c2"`
Dec 05 03:50:52.805 INFO [stderr] usermod: no changes
Dec 05 03:50:52.828 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 05 03:50:52.972 INFO [stderr] warning: unused variable: `a`
Dec 05 03:50:52.972 INFO [stderr]  --> src/main.rs:9:9
Dec 05 03:50:52.972 INFO [stderr]   |
Dec 05 03:50:52.972 INFO [stderr] 9 |     let a: i32 = 1;
Dec 05 03:50:52.972 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 05 03:50:52.972 INFO [stderr]   |
Dec 05 03:50:52.972 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 03:50:52.972 INFO [stderr] 
Dec 05 03:50:52.972 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:14:13
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 05 03:50:52.973 INFO [stderr]    |             ^
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr]    = note: consider using `_b` instead
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: value assigned to `b` is never read
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:15:5
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 15 |     b = 25;
Dec 05 03:50:52.973 INFO [stderr]    |     ^
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:17:9
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 05 03:50:52.973 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: value assigned to `x` is never read
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:38:13
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 05 03:50:52.973 INFO [stderr]    |             ^
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:42:9
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 42 |     let y = 4;
Dec 05 03:50:52.973 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:45:9
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 05 03:50:52.973 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.973 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:52.973 INFO [stderr]   --> src/main.rs:60:9
Dec 05 03:50:52.973 INFO [stderr]    |
Dec 05 03:50:52.973 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 05 03:50:52.973 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:52.973 INFO [stderr] 
Dec 05 03:50:52.976 INFO [stderr] warning: function is never used: `diverges`
Dec 05 03:50:52.976 INFO [stderr]   --> src/main.rs:93:1
Dec 05 03:50:52.976 INFO [stderr]    |
Dec 05 03:50:52.976 INFO [stderr] 93 | fn diverges() -> ! {
Dec 05 03:50:52.976 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 03:50:52.976 INFO [stderr]    |
Dec 05 03:50:52.976 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:50:52.976 INFO [stderr] 
Dec 05 03:50:53.265 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 05 03:50:53.265 INFO [stderr] su: No module specific data is present
Dec 05 03:50:53.506 INFO running `"docker" "inspect" "10ff58bf89d3df9b29a4d4e2523368907472e0d1ae5c04fd739cc40ff34c21c2"`
Dec 05 03:50:53.616 INFO running `"docker" "rm" "-f" "10ff58bf89d3df9b29a4d4e2523368907472e0d1ae5c04fd739cc40ff34c21c2"`
Dec 05 03:50:53.695 INFO [stdout] 10ff58bf89d3df9b29a4d4e2523368907472e0d1ae5c04fd739cc40ff34c21c2
Dec 05 03:50:53.697 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 03:50:53.851 INFO [stdout] b03fbdbc9f63133113a848835eaed46517664c9607cfc179fa6c89684ac4af31
Dec 05 03:50:53.858 INFO running `"docker" "start" "-a" "b03fbdbc9f63133113a848835eaed46517664c9607cfc179fa6c89684ac4af31"`
Dec 05 03:50:54.248 INFO [stderr] usermod: no changes
Dec 05 03:50:54.272 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 03:50:54.272 INFO [stderr]      Running /target/debug/deps/basics-bd70cfa7e16eb3cd
Dec 05 03:50:54.277 INFO [stderr] su: No module specific data is present
Dec 05 03:50:54.277 INFO [stdout] 
Dec 05 03:50:54.277 INFO [stdout] running 0 tests
Dec 05 03:50:54.277 INFO [stdout] 
Dec 05 03:50:54.277 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:50:54.277 INFO [stdout] 
Dec 05 03:50:54.610 INFO running `"docker" "inspect" "b03fbdbc9f63133113a848835eaed46517664c9607cfc179fa6c89684ac4af31"`
Dec 05 03:50:54.766 INFO running `"docker" "rm" "-f" "b03fbdbc9f63133113a848835eaed46517664c9607cfc179fa6c89684ac4af31"`
Dec 05 03:50:54.952 INFO [stdout] b03fbdbc9f63133113a848835eaed46517664c9607cfc179fa6c89684ac4af31