Dec 12 23:30:47.878 INFO testing tperdue321/rust_basics against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 12 23:30:47.878 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12 23:30:48.046 INFO [stdout] 6a0e60392b0945e350d395081f8230795b8e29d9fa1b3d04269484bd35e3ee97
Dec 12 23:30:48.048 INFO running `"docker" "start" "-a" "6a0e60392b0945e350d395081f8230795b8e29d9fa1b3d04269484bd35e3ee97"`
Dec 12 23:30:48.506 INFO [stderr] usermod: no changes
Dec 12 23:30:48.579 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 12 23:30:48.767 INFO [stderr] warning: unused variable: `a`
Dec 12 23:30:48.767 INFO [stderr]  --> src/main.rs:9:9
Dec 12 23:30:48.767 INFO [stderr]   |
Dec 12 23:30:48.767 INFO [stderr] 9 |     let a: i32 = 1;
Dec 12 23:30:48.767 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 12 23:30:48.767 INFO [stderr]   |
Dec 12 23:30:48.767 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:14:13
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 12 23:30:48.767 INFO [stderr]    |             ^
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr]    = note: consider using `_b` instead
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: value assigned to `b` is never read
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:15:5
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 15 |     b = 25;
Dec 12 23:30:48.767 INFO [stderr]    |     ^
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: unused variable: `x`
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:17:9
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 12 23:30:48.767 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: value assigned to `x` is never read
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:38:13
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 12 23:30:48.767 INFO [stderr]    |             ^
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: unused variable: `y`
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:42:9
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 42 |     let y = 4;
Dec 12 23:30:48.767 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: unused variable: `y`
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:45:9
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 12 23:30:48.767 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.767 INFO [stderr] warning: unused variable: `x`
Dec 12 23:30:48.767 INFO [stderr]   --> src/main.rs:60:9
Dec 12 23:30:48.767 INFO [stderr]    |
Dec 12 23:30:48.767 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 12 23:30:48.767 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 12 23:30:48.767 INFO [stderr] 
Dec 12 23:30:48.779 INFO [stderr] warning: function is never used: `diverges`
Dec 12 23:30:48.779 INFO [stderr]   --> src/main.rs:93:1
Dec 12 23:30:48.779 INFO [stderr]    |
Dec 12 23:30:48.779 INFO [stderr] 93 | fn diverges() -> ! {
Dec 12 23:30:48.779 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 12 23:30:48.779 INFO [stderr]    |
Dec 12 23:30:48.779 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 23:30:48.779 INFO [stderr] 
Dec 12 23:30:48.992 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Dec 12 23:30:48.995 INFO [stderr] su: No module specific data is present
Dec 12 23:30:49.256 INFO running `"docker" "inspect" "6a0e60392b0945e350d395081f8230795b8e29d9fa1b3d04269484bd35e3ee97"`
Dec 12 23:30:49.354 INFO running `"docker" "rm" "-f" "6a0e60392b0945e350d395081f8230795b8e29d9fa1b3d04269484bd35e3ee97"`
Dec 12 23:30:49.445 INFO [stdout] 6a0e60392b0945e350d395081f8230795b8e29d9fa1b3d04269484bd35e3ee97
Dec 12 23:30:49.447 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12 23:30:49.601 INFO [stdout] 09ccbad3953b189e66b9ec13bcb206e750ae069abea003d9d37e6874716b56cc
Dec 12 23:30:49.603 INFO running `"docker" "start" "-a" "09ccbad3953b189e66b9ec13bcb206e750ae069abea003d9d37e6874716b56cc"`
Dec 12 23:30:50.019 INFO [stderr] usermod: no changes
Dec 12 23:30:50.055 INFO [stderr]    Compiling basics v0.1.0 (/source)
Dec 12 23:30:50.224 INFO [stderr] warning: unused variable: `a`
Dec 12 23:30:50.224 INFO [stderr]  --> src/main.rs:9:9
Dec 12 23:30:50.224 INFO [stderr]   |
Dec 12 23:30:50.224 INFO [stderr] 9 |     let a: i32 = 1;
Dec 12 23:30:50.224 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 12 23:30:50.224 INFO [stderr]   |
Dec 12 23:30:50.224 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:14:13
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 12 23:30:50.224 INFO [stderr]    |             ^
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr]    = note: consider using `_b` instead
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: value assigned to `b` is never read
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:15:5
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 15 |     b = 25;
Dec 12 23:30:50.224 INFO [stderr]    |     ^
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: unused variable: `x`
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:17:9
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 12 23:30:50.224 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: value assigned to `x` is never read
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:38:13
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 12 23:30:50.224 INFO [stderr]    |             ^
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: unused variable: `y`
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:42:9
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 42 |     let y = 4;
Dec 12 23:30:50.224 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.224 INFO [stderr] warning: unused variable: `y`
Dec 12 23:30:50.224 INFO [stderr]   --> src/main.rs:45:9
Dec 12 23:30:50.224 INFO [stderr]    |
Dec 12 23:30:50.224 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 12 23:30:50.224 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 12 23:30:50.224 INFO [stderr] 
Dec 12 23:30:50.225 INFO [stderr] warning: unused variable: `x`
Dec 12 23:30:50.225 INFO [stderr]   --> src/main.rs:60:9
Dec 12 23:30:50.225 INFO [stderr]    |
Dec 12 23:30:50.225 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 12 23:30:50.225 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 12 23:30:50.225 INFO [stderr] 
Dec 12 23:30:50.230 INFO [stderr] warning: function is never used: `diverges`
Dec 12 23:30:50.230 INFO [stderr]   --> src/main.rs:93:1
Dec 12 23:30:50.230 INFO [stderr]    |
Dec 12 23:30:50.230 INFO [stderr] 93 | fn diverges() -> ! {
Dec 12 23:30:50.230 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 12 23:30:50.230 INFO [stderr]    |
Dec 12 23:30:50.230 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 23:30:50.230 INFO [stderr] 
Dec 12 23:30:50.473 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 12 23:30:50.475 INFO [stderr] su: No module specific data is present
Dec 12 23:30:50.716 INFO running `"docker" "inspect" "09ccbad3953b189e66b9ec13bcb206e750ae069abea003d9d37e6874716b56cc"`
Dec 12 23:30:50.844 INFO running `"docker" "rm" "-f" "09ccbad3953b189e66b9ec13bcb206e750ae069abea003d9d37e6874716b56cc"`
Dec 12 23:30:51.065 INFO [stdout] 09ccbad3953b189e66b9ec13bcb206e750ae069abea003d9d37e6874716b56cc
Dec 12 23:30:51.068 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12 23:30:51.195 INFO [stdout] 2300961ffaf1ff96529b00616fbeee6b80ab06f5df2fe48bb97df37d418bacfa
Dec 12 23:30:51.200 INFO running `"docker" "start" "-a" "2300961ffaf1ff96529b00616fbeee6b80ab06f5df2fe48bb97df37d418bacfa"`
Dec 12 23:30:51.685 INFO [stderr] usermod: no changes
Dec 12 23:30:51.722 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 12 23:30:51.722 INFO [stderr]      Running /target/debug/deps/basics-2b86f91887584dbf
Dec 12 23:30:51.725 INFO [stdout] 
Dec 12 23:30:51.725 INFO [stdout] running 0 tests
Dec 12 23:30:51.725 INFO [stdout] 
Dec 12 23:30:51.725 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 23:30:51.725 INFO [stdout] 
Dec 12 23:30:51.725 INFO [stderr] su: No module specific data is present
Dec 12 23:30:51.962 INFO running `"docker" "inspect" "2300961ffaf1ff96529b00616fbeee6b80ab06f5df2fe48bb97df37d418bacfa"`
Dec 12 23:30:52.077 INFO running `"docker" "rm" "-f" "2300961ffaf1ff96529b00616fbeee6b80ab06f5df2fe48bb97df37d418bacfa"`
Dec 12 23:30:52.202 INFO [stdout] 2300961ffaf1ff96529b00616fbeee6b80ab06f5df2fe48bb97df37d418bacfa