Dec 05 03:50:48.416 INFO testing tperdue321/rust_basics against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 03:50:48.416 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 03:50:48.587 INFO [stdout] 0a993714ed38a4b4fe7413eac03aad2cf79ea2b191bc37b14ce91679c5fbb7b5
Dec 05 03:50:48.590 INFO running `"docker" "start" "-a" "0a993714ed38a4b4fe7413eac03aad2cf79ea2b191bc37b14ce91679c5fbb7b5"`
Dec 05 03:50:49.003 INFO [stderr] usermod: no changes
Dec 05 03:50:49.028 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 05 03:50:49.158 INFO [stderr] warning: unused variable: `a`
Dec 05 03:50:49.158 INFO [stderr]  --> src/main.rs:9:9
Dec 05 03:50:49.158 INFO [stderr]   |
Dec 05 03:50:49.158 INFO [stderr] 9 |     let a: i32 = 1;
Dec 05 03:50:49.158 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 05 03:50:49.158 INFO [stderr]   |
Dec 05 03:50:49.158 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:14:13
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 05 03:50:49.158 INFO [stderr]    |             ^
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr]    = note: consider using `_b` instead
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: value assigned to `b` is never read
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:15:5
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 15 |     b = 25;
Dec 05 03:50:49.158 INFO [stderr]    |     ^
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:17:9
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 05 03:50:49.158 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: value assigned to `x` is never read
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:38:13
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 05 03:50:49.158 INFO [stderr]    |             ^
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:42:9
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 42 |     let y = 4;
Dec 05 03:50:49.158 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:45:9
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 05 03:50:49.158 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.158 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:49.158 INFO [stderr]   --> src/main.rs:60:9
Dec 05 03:50:49.158 INFO [stderr]    |
Dec 05 03:50:49.158 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 05 03:50:49.158 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:49.158 INFO [stderr] 
Dec 05 03:50:49.164 INFO [stderr] warning: function is never used: `diverges`
Dec 05 03:50:49.164 INFO [stderr]   --> src/main.rs:93:1
Dec 05 03:50:49.164 INFO [stderr]    |
Dec 05 03:50:49.164 INFO [stderr] 93 | fn diverges() -> ! {
Dec 05 03:50:49.164 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 03:50:49.164 INFO [stderr]    |
Dec 05 03:50:49.164 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:50:49.164 INFO [stderr] 
Dec 05 03:50:49.371 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Dec 05 03:50:49.373 INFO [stderr] su: No module specific data is present
Dec 05 03:50:50.070 INFO running `"docker" "inspect" "0a993714ed38a4b4fe7413eac03aad2cf79ea2b191bc37b14ce91679c5fbb7b5"`
Dec 05 03:50:50.183 INFO running `"docker" "rm" "-f" "0a993714ed38a4b4fe7413eac03aad2cf79ea2b191bc37b14ce91679c5fbb7b5"`
Dec 05 03:50:50.272 INFO [stdout] 0a993714ed38a4b4fe7413eac03aad2cf79ea2b191bc37b14ce91679c5fbb7b5
Dec 05 03:50:50.274 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 03:50:50.430 INFO [stdout] 9493dcd367701d212302cbb0550e582d24473cc7b6359a31712695a8ed355a6e
Dec 05 03:50:50.432 INFO running `"docker" "start" "-a" "9493dcd367701d212302cbb0550e582d24473cc7b6359a31712695a8ed355a6e"`
Dec 05 03:50:50.837 INFO [stderr] usermod: no changes
Dec 05 03:50:50.877 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 05 03:50:51.054 INFO [stderr] warning: unused variable: `a`
Dec 05 03:50:51.054 INFO [stderr]  --> src/main.rs:9:9
Dec 05 03:50:51.054 INFO [stderr]   |
Dec 05 03:50:51.054 INFO [stderr] 9 |     let a: i32 = 1;
Dec 05 03:50:51.054 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 05 03:50:51.054 INFO [stderr]   |
Dec 05 03:50:51.054 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:14:13
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 05 03:50:51.054 INFO [stderr]    |             ^
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr]    = note: consider using `_b` instead
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: value assigned to `b` is never read
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:15:5
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 15 |     b = 25;
Dec 05 03:50:51.054 INFO [stderr]    |     ^
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:17:9
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 05 03:50:51.054 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: value assigned to `x` is never read
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:38:13
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 05 03:50:51.054 INFO [stderr]    |             ^
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:42:9
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 42 |     let y = 4;
Dec 05 03:50:51.054 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: unused variable: `y`
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:45:9
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 05 03:50:51.054 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.054 INFO [stderr] warning: unused variable: `x`
Dec 05 03:50:51.054 INFO [stderr]   --> src/main.rs:60:9
Dec 05 03:50:51.054 INFO [stderr]    |
Dec 05 03:50:51.054 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 05 03:50:51.054 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 03:50:51.054 INFO [stderr] 
Dec 05 03:50:51.059 INFO [stderr] warning: function is never used: `diverges`
Dec 05 03:50:51.059 INFO [stderr]   --> src/main.rs:93:1
Dec 05 03:50:51.059 INFO [stderr]    |
Dec 05 03:50:51.059 INFO [stderr] 93 | fn diverges() -> ! {
Dec 05 03:50:51.059 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 03:50:51.059 INFO [stderr]    |
Dec 05 03:50:51.059 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:50:51.059 INFO [stderr] 
Dec 05 03:50:51.281 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 05 03:50:51.283 INFO [stderr] su: No module specific data is present
Dec 05 03:50:51.688 INFO running `"docker" "inspect" "9493dcd367701d212302cbb0550e582d24473cc7b6359a31712695a8ed355a6e"`
Dec 05 03:50:51.936 INFO running `"docker" "rm" "-f" "9493dcd367701d212302cbb0550e582d24473cc7b6359a31712695a8ed355a6e"`
Dec 05 03:50:52.127 INFO [stdout] 9493dcd367701d212302cbb0550e582d24473cc7b6359a31712695a8ed355a6e
Dec 05 03:50:52.127 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 03:50:52.407 INFO [stdout] cb1fb0aaa9a367d93eb0ee37b87c7a6b955718561c3d9d85794fcb3f91c9a10b
Dec 05 03:50:52.407 INFO running `"docker" "start" "-a" "cb1fb0aaa9a367d93eb0ee37b87c7a6b955718561c3d9d85794fcb3f91c9a10b"`
Dec 05 03:50:52.806 INFO [stderr] usermod: no changes
Dec 05 03:50:52.839 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Dec 05 03:50:52.842 INFO [stderr]      Running /target/debug/deps/basics-be8740ea7e658d48
Dec 05 03:50:52.842 INFO [stdout] 
Dec 05 03:50:52.842 INFO [stdout] running 0 tests
Dec 05 03:50:52.842 INFO [stdout] 
Dec 05 03:50:52.842 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:50:52.842 INFO [stdout] 
Dec 05 03:50:52.843 INFO [stderr] su: No module specific data is present
Dec 05 03:50:53.140 INFO running `"docker" "inspect" "cb1fb0aaa9a367d93eb0ee37b87c7a6b955718561c3d9d85794fcb3f91c9a10b"`
Dec 05 03:50:53.230 INFO running `"docker" "rm" "-f" "cb1fb0aaa9a367d93eb0ee37b87c7a6b955718561c3d9d85794fcb3f91c9a10b"`
Dec 05 03:50:53.371 INFO [stdout] cb1fb0aaa9a367d93eb0ee37b87c7a6b955718561c3d9d85794fcb3f91c9a10b