Dec 14 04:47:47.392 INFO testing VitalyAnkh/learn_error_handling against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 04:47:47.392 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 14 04:47:47.839 INFO [stdout] 6acc7b47fba12fe05ee9e3c19ef20c7f9acfe2ca4a53e4720ab85c1a867df5bb
Dec 14 04:47:47.844 INFO running `"docker" "start" "-a" "6acc7b47fba12fe05ee9e3c19ef20c7f9acfe2ca4a53e4720ab85c1a867df5bb"`
Dec 14 04:47:48.903 INFO [stderr] usermod: no changes
Dec 14 04:47:48.975 INFO [stderr]    Compiling learn_error_handling v0.1.0 (/source)
Dec 14 04:47:49.463 INFO [stderr] warning: unused imports: `Cons`, `Nil`
Dec 14 04:47:49.463 INFO [stderr]  --> src/smart_pointer/rc.rs:7:18
Dec 14 04:47:49.463 INFO [stderr]   |
Dec 14 04:47:49.463 INFO [stderr] 7 | use self::List::{Cons,Nil};
Dec 14 04:47:49.463 INFO [stderr]   |                  ^^^^ ^^^
Dec 14 04:47:49.463 INFO [stderr]   |
Dec 14 04:47:49.463 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 04:47:49.463 INFO [stderr] 
Dec 14 04:47:49.476 INFO [stderr] warning: struct is never constructed: `Guess`
Dec 14 04:47:49.476 INFO [stderr]  --> src/read/mod.rs:5:1
Dec 14 04:47:49.476 INFO [stderr]   |
Dec 14 04:47:49.476 INFO [stderr] 5 | struct Guess {
Dec 14 04:47:49.476 INFO [stderr]   | ^^^^^^^^^^^^
Dec 14 04:47:49.476 INFO [stderr]   |
Dec 14 04:47:49.476 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:49.476 INFO [stderr] 
Dec 14 04:47:49.476 INFO [stderr] warning: method is never used: `new`
Dec 14 04:47:49.476 INFO [stderr]   --> src/read/mod.rs:10:5
Dec 14 04:47:49.476 INFO [stderr]    |
Dec 14 04:47:49.476 INFO [stderr] 10 |     fn new(value: u32) -> Guess {
Dec 14 04:47:49.476 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 04:47:49.476 INFO [stderr] 
Dec 14 04:47:49.476 INFO [stderr] warning: enum is never used: `List`
Dec 14 04:47:49.476 INFO [stderr]  --> src/smart_pointer/rc.rs:1:1
Dec 14 04:47:49.476 INFO [stderr]   |
Dec 14 04:47:49.476 INFO [stderr] 1 | enum List{
Dec 14 04:47:49.476 INFO [stderr]   | ^^^^^^^^^
Dec 14 04:47:49.476 INFO [stderr] 
Dec 14 04:47:49.477 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 04:47:49.477 INFO [stderr]   --> src/read/mod.rs:11:12
Dec 14 04:47:49.477 INFO [stderr]    |
Dec 14 04:47:49.477 INFO [stderr] 11 |         if value < 0 || value > 100 {
Dec 14 04:47:49.477 INFO [stderr]    |            ^^^^^^^^^
Dec 14 04:47:49.477 INFO [stderr]    |
Dec 14 04:47:49.477 INFO [stderr]    = note: #[warn(unused_comparisons)] on by default
Dec 14 04:47:49.477 INFO [stderr] 
Dec 14 04:47:50.676 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
Dec 14 04:47:50.679 INFO [stderr] su: No module specific data is present
Dec 14 04:47:51.435 INFO running `"docker" "inspect" "6acc7b47fba12fe05ee9e3c19ef20c7f9acfe2ca4a53e4720ab85c1a867df5bb"`
Dec 14 04:47:51.700 INFO running `"docker" "rm" "-f" "6acc7b47fba12fe05ee9e3c19ef20c7f9acfe2ca4a53e4720ab85c1a867df5bb"`
Dec 14 04:47:52.001 INFO [stdout] 6acc7b47fba12fe05ee9e3c19ef20c7f9acfe2ca4a53e4720ab85c1a867df5bb
Dec 14 04:47:52.007 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 14 04:47:52.419 INFO [stdout] 79a7b805a8b5a3f9e246b8ccc4a1d2f8f6fa84e0fbd9d1e9000dbf916e521b10
Dec 14 04:47:52.427 INFO running `"docker" "start" "-a" "79a7b805a8b5a3f9e246b8ccc4a1d2f8f6fa84e0fbd9d1e9000dbf916e521b10"`
Dec 14 04:47:53.877 INFO [stderr] usermod: no changes
Dec 14 04:47:53.877 INFO [stderr]    Compiling learn_error_handling v0.1.0 (/source)
Dec 14 04:47:54.723 INFO [stderr] warning: unused variable: `y`
Dec 14 04:47:54.723 INFO [stderr]   --> tests/integration_test.rs:11:9
Dec 14 04:47:54.723 INFO [stderr]    |
Dec 14 04:47:54.723 INFO [stderr] 11 |     let y =&a;
Dec 14 04:47:54.723 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 14 04:47:54.723 INFO [stderr]    |
Dec 14 04:47:54.723 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 04:47:54.723 INFO [stderr] 
Dec 14 04:47:54.723 INFO [stderr] warning: function is never used: `it_add_two`
Dec 14 04:47:54.723 INFO [stderr]  --> tests/integration_test.rs:5:1
Dec 14 04:47:54.723 INFO [stderr]   |
Dec 14 04:47:54.723 INFO [stderr] 5 | fn it_add_two(){
Dec 14 04:47:54.723 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 14 04:47:54.723 INFO [stderr]   |
Dec 14 04:47:54.723 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:54.723 INFO [stderr] 
Dec 14 04:47:54.723 INFO [stderr] warning: function is never used: `check_borrow_rules`
Dec 14 04:47:54.723 INFO [stderr]  --> tests/integration_test.rs:9:1
Dec 14 04:47:54.723 INFO [stderr]   |
Dec 14 04:47:54.723 INFO [stderr] 9 | fn check_borrow_rules(){
Dec 14 04:47:54.723 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 04:47:54.723 INFO [stderr] 
Dec 14 04:47:55.031 INFO [stderr] warning: unused variable: `b`
Dec 14 04:47:55.031 INFO [stderr]   --> src/smart_pointer/rc.rs:12:9
Dec 14 04:47:55.031 INFO [stderr]    |
Dec 14 04:47:55.031 INFO [stderr] 12 |     let b = Cons(2,Rc::clone(&a));
Dec 14 04:47:55.031 INFO [stderr]    |         ^ help: consider using `_b` instead
Dec 14 04:47:55.031 INFO [stderr]    |
Dec 14 04:47:55.031 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 04:47:55.031 INFO [stderr] 
Dec 14 04:47:55.031 INFO [stderr] warning: unused variable: `y`
Dec 14 04:47:55.031 INFO [stderr]  --> src/smart_pointer/ref_cell.rs:4:13
Dec 14 04:47:55.031 INFO [stderr]   |
Dec 14 04:47:55.031 INFO [stderr] 4 |     let mut y =&a;
Dec 14 04:47:55.031 INFO [stderr]   |             ^ help: consider using `_y` instead
Dec 14 04:47:55.031 INFO [stderr] 
Dec 14 04:47:55.059 INFO [stderr] warning: variable does not need to be mutable
Dec 14 04:47:55.059 INFO [stderr]  --> src/smart_pointer/ref_cell.rs:4:9
Dec 14 04:47:55.059 INFO [stderr]   |
Dec 14 04:47:55.059 INFO [stderr] 4 |     let mut y =&a;
Dec 14 04:47:55.059 INFO [stderr]   |         ----^
Dec 14 04:47:55.059 INFO [stderr]   |         |
Dec 14 04:47:55.059 INFO [stderr]   |         help: remove this `mut`
Dec 14 04:47:55.059 INFO [stderr]   |
Dec 14 04:47:55.059 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 14 04:47:55.059 INFO [stderr] 
Dec 14 04:47:55.059 INFO [stderr] warning: field is never used: `value`
Dec 14 04:47:55.059 INFO [stderr]  --> src/read/mod.rs:6:5
Dec 14 04:47:55.059 INFO [stderr]   |
Dec 14 04:47:55.059 INFO [stderr] 6 |     value: u32
Dec 14 04:47:55.059 INFO [stderr]   |     ^^^^^^^^^^
Dec 14 04:47:55.059 INFO [stderr]   |
Dec 14 04:47:55.059 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:55.059 INFO [stderr] 
Dec 14 04:47:55.059 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 04:47:55.059 INFO [stderr]   --> src/read/mod.rs:11:12
Dec 14 04:47:55.059 INFO [stderr]    |
Dec 14 04:47:55.059 INFO [stderr] 11 |         if value < 0 || value > 100 {
Dec 14 04:47:55.059 INFO [stderr]    |            ^^^^^^^^^
Dec 14 04:47:55.059 INFO [stderr]    |
Dec 14 04:47:55.059 INFO [stderr]    = note: #[warn(unused_comparisons)] on by default
Dec 14 04:47:55.071 INFO [stderr] 
Dec 14 04:47:55.644 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
Dec 14 04:47:55.645 INFO [stderr] su: No module specific data is present
Dec 14 04:47:56.346 INFO running `"docker" "inspect" "79a7b805a8b5a3f9e246b8ccc4a1d2f8f6fa84e0fbd9d1e9000dbf916e521b10"`
Dec 14 04:47:56.651 INFO running `"docker" "rm" "-f" "79a7b805a8b5a3f9e246b8ccc4a1d2f8f6fa84e0fbd9d1e9000dbf916e521b10"`
Dec 14 04:47:56.900 INFO [stdout] 79a7b805a8b5a3f9e246b8ccc4a1d2f8f6fa84e0fbd9d1e9000dbf916e521b10
Dec 14 04:47:56.903 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 14 04:47:57.369 INFO [stdout] 1e4dfff356e144d3466fd67f34e6a9d5259cd6405304d6b865e3394ca5c7594f
Dec 14 04:47:57.370 INFO running `"docker" "start" "-a" "1e4dfff356e144d3466fd67f34e6a9d5259cd6405304d6b865e3394ca5c7594f"`
Dec 14 04:47:58.292 INFO [stderr] usermod: no changes
Dec 14 04:47:58.363 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 14 04:47:58.370 INFO [stderr]      Running /target/debug/deps/learn_error_handling-e8deacc77bd35ada
Dec 14 04:47:58.379 INFO [stdout] 
Dec 14 04:47:58.379 INFO [stdout] running 3 tests
Dec 14 04:47:58.391 INFO [stdout] test smart_pointer::rc::test_rc ... ok
Dec 14 04:47:58.391 INFO [stdout] test smart_pointer::ref_cell::check_borrow_rules ... ok
Dec 14 04:47:58.471 INFO [stdout] test read::tests::greater_than_100 ... ok
Dec 14 04:47:58.471 INFO [stderr]      Running /target/debug/deps/learn_error_handling-29c51eff6c9f69d9
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stderr]      Running /target/debug/deps/integration_test-2999ff59da25487d
Dec 14 04:47:58.471 INFO [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:47:58.471 INFO [stderr]    Doc-tests learn_error_handling
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] running 0 tests
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] running 0 tests
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:58.471 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:47:58.471 INFO [stdout] 
Dec 14 04:47:59.139 INFO [stdout] 
Dec 14 04:47:59.139 INFO [stdout] running 0 tests
Dec 14 04:47:59.139 INFO [stdout] 
Dec 14 04:47:59.139 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:47:59.139 INFO [stdout] 
Dec 14 04:47:59.155 INFO [stderr] su: No module specific data is present
Dec 14 04:47:59.865 INFO running `"docker" "inspect" "1e4dfff356e144d3466fd67f34e6a9d5259cd6405304d6b865e3394ca5c7594f"`
Dec 14 04:48:00.225 INFO running `"docker" "rm" "-f" "1e4dfff356e144d3466fd67f34e6a9d5259cd6405304d6b865e3394ca5c7594f"`
Dec 14 04:48:00.523 INFO [stdout] 1e4dfff356e144d3466fd67f34e6a9d5259cd6405304d6b865e3394ca5c7594f