Dec 14 04:47:52.208 INFO testing VitalyAnkh/learn_error_handling against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 04:47:52.208 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 14 04:47:52.703 INFO [stdout] 5a94e4ed3e92d85f34e28db7d1f89c745ecd92ab01a10dfc638a13dd0de35913
Dec 14 04:47:52.711 INFO running `"docker" "start" "-a" "5a94e4ed3e92d85f34e28db7d1f89c745ecd92ab01a10dfc638a13dd0de35913"`
Dec 14 04:47:53.876 INFO [stderr] usermod: no changes
Dec 14 04:47:53.877 INFO [stderr]    Compiling learn_error_handling v0.1.0 (/source)
Dec 14 04:47:54.255 INFO [stderr] warning: unused imports: `Cons`, `Nil`
Dec 14 04:47:54.255 INFO [stderr]  --> src/smart_pointer/rc.rs:7:18
Dec 14 04:47:54.255 INFO [stderr]   |
Dec 14 04:47:54.255 INFO [stderr] 7 | use self::List::{Cons,Nil};
Dec 14 04:47:54.255 INFO [stderr]   |                  ^^^^ ^^^
Dec 14 04:47:54.255 INFO [stderr]   |
Dec 14 04:47:54.255 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 04:47:54.255 INFO [stderr] 
Dec 14 04:47:54.331 INFO [stderr] warning: struct is never constructed: `Guess`
Dec 14 04:47:54.331 INFO [stderr]  --> src/read/mod.rs:5:1
Dec 14 04:47:54.331 INFO [stderr]   |
Dec 14 04:47:54.331 INFO [stderr] 5 | struct Guess {
Dec 14 04:47:54.331 INFO [stderr]   | ^^^^^^^^^^^^
Dec 14 04:47:54.331 INFO [stderr]   |
Dec 14 04:47:54.331 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:54.331 INFO [stderr] 
Dec 14 04:47:54.331 INFO [stderr] warning: method is never used: `new`
Dec 14 04:47:54.331 INFO [stderr]   --> src/read/mod.rs:10:5
Dec 14 04:47:54.331 INFO [stderr]    |
Dec 14 04:47:54.331 INFO [stderr] 10 |     fn new(value: u32) -> Guess {
Dec 14 04:47:54.331 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 04:47:54.331 INFO [stderr] 
Dec 14 04:47:54.331 INFO [stderr] warning: enum is never used: `List`
Dec 14 04:47:54.331 INFO [stderr]  --> src/smart_pointer/rc.rs:1:1
Dec 14 04:47:54.331 INFO [stderr]   |
Dec 14 04:47:54.331 INFO [stderr] 1 | enum List{
Dec 14 04:47:54.331 INFO [stderr]   | ^^^^^^^^^
Dec 14 04:47:54.331 INFO [stderr] 
Dec 14 04:47:54.331 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 04:47:54.331 INFO [stderr]   --> src/read/mod.rs:11:12
Dec 14 04:47:54.331 INFO [stderr]    |
Dec 14 04:47:54.331 INFO [stderr] 11 |         if value < 0 || value > 100 {
Dec 14 04:47:54.331 INFO [stderr]    |            ^^^^^^^^^
Dec 14 04:47:54.331 INFO [stderr]    |
Dec 14 04:47:54.331 INFO [stderr]    = note: #[warn(unused_comparisons)] on by default
Dec 14 04:47:54.331 INFO [stderr] 
Dec 14 04:47:55.373 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Dec 14 04:47:55.373 INFO [stderr] su: No module specific data is present
Dec 14 04:47:56.136 INFO running `"docker" "inspect" "5a94e4ed3e92d85f34e28db7d1f89c745ecd92ab01a10dfc638a13dd0de35913"`
Dec 14 04:47:56.483 INFO running `"docker" "rm" "-f" "5a94e4ed3e92d85f34e28db7d1f89c745ecd92ab01a10dfc638a13dd0de35913"`
Dec 14 04:47:56.729 INFO [stdout] 5a94e4ed3e92d85f34e28db7d1f89c745ecd92ab01a10dfc638a13dd0de35913
Dec 14 04:47:56.733 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 14 04:47:57.191 INFO [stdout] 3d9eec32cd6c77a3a05fd5194f361d3728ba7ac6e61fc460ff3a5c142309eaae
Dec 14 04:47:57.203 INFO running `"docker" "start" "-a" "3d9eec32cd6c77a3a05fd5194f361d3728ba7ac6e61fc460ff3a5c142309eaae"`
Dec 14 04:47:58.288 INFO [stderr] usermod: no changes
Dec 14 04:47:58.370 INFO [stderr]    Compiling learn_error_handling v0.1.0 (/source)
Dec 14 04:47:59.219 INFO [stderr] warning: unused variable: `b`
Dec 14 04:47:59.219 INFO [stderr]   --> src/smart_pointer/rc.rs:12:9
Dec 14 04:47:59.219 INFO [stderr]    |
Dec 14 04:47:59.219 INFO [stderr] 12 |     let b = Cons(2,Rc::clone(&a));
Dec 14 04:47:59.219 INFO [stderr]    |         ^ help: consider using `_b` instead
Dec 14 04:47:59.219 INFO [stderr]    |
Dec 14 04:47:59.219 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 04:47:59.219 INFO [stderr] 
Dec 14 04:47:59.219 INFO [stderr] warning: unused variable: `y`
Dec 14 04:47:59.219 INFO [stderr]  --> src/smart_pointer/ref_cell.rs:4:13
Dec 14 04:47:59.219 INFO [stderr]   |
Dec 14 04:47:59.219 INFO [stderr] 4 |     let mut y =&a;
Dec 14 04:47:59.219 INFO [stderr]   |             ^ help: consider using `_y` instead
Dec 14 04:47:59.219 INFO [stderr] 
Dec 14 04:47:59.231 INFO [stderr] warning: variable does not need to be mutable
Dec 14 04:47:59.231 INFO [stderr]  --> src/smart_pointer/ref_cell.rs:4:9
Dec 14 04:47:59.231 INFO [stderr]   |
Dec 14 04:47:59.231 INFO [stderr] 4 |     let mut y =&a;
Dec 14 04:47:59.231 INFO [stderr]   |         ----^
Dec 14 04:47:59.231 INFO [stderr]   |         |
Dec 14 04:47:59.231 INFO [stderr]   |         help: remove this `mut`
Dec 14 04:47:59.231 INFO [stderr]   |
Dec 14 04:47:59.231 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 14 04:47:59.231 INFO [stderr] 
Dec 14 04:47:59.231 INFO [stderr] warning: field is never used: `value`
Dec 14 04:47:59.231 INFO [stderr]  --> src/read/mod.rs:6:5
Dec 14 04:47:59.231 INFO [stderr]   |
Dec 14 04:47:59.231 INFO [stderr] 6 |     value: u32
Dec 14 04:47:59.231 INFO [stderr]   |     ^^^^^^^^^^
Dec 14 04:47:59.231 INFO [stderr]   |
Dec 14 04:47:59.231 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:59.231 INFO [stderr] 
Dec 14 04:47:59.231 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 04:47:59.231 INFO [stderr]   --> src/read/mod.rs:11:12
Dec 14 04:47:59.231 INFO [stderr]    |
Dec 14 04:47:59.231 INFO [stderr] 11 |         if value < 0 || value > 100 {
Dec 14 04:47:59.231 INFO [stderr]    |            ^^^^^^^^^
Dec 14 04:47:59.231 INFO [stderr]    |
Dec 14 04:47:59.231 INFO [stderr]    = note: #[warn(unused_comparisons)] on by default
Dec 14 04:47:59.231 INFO [stderr] 
Dec 14 04:47:59.243 INFO [stderr] warning: unused variable: `y`
Dec 14 04:47:59.243 INFO [stderr]   --> tests/integration_test.rs:11:9
Dec 14 04:47:59.243 INFO [stderr]    |
Dec 14 04:47:59.243 INFO [stderr] 11 |     let y =&a;
Dec 14 04:47:59.243 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 14 04:47:59.243 INFO [stderr]    |
Dec 14 04:47:59.243 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 04:47:59.243 INFO [stderr] 
Dec 14 04:47:59.247 INFO [stderr] warning: function is never used: `it_add_two`
Dec 14 04:47:59.247 INFO [stderr]  --> tests/integration_test.rs:5:1
Dec 14 04:47:59.247 INFO [stderr]   |
Dec 14 04:47:59.247 INFO [stderr] 5 | fn it_add_two(){
Dec 14 04:47:59.247 INFO [stderr]   | ^^^^^^^^^^^^^^^
Dec 14 04:47:59.247 INFO [stderr]   |
Dec 14 04:47:59.247 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 14 04:47:59.247 INFO [stderr] 
Dec 14 04:47:59.247 INFO [stderr] warning: function is never used: `check_borrow_rules`
Dec 14 04:47:59.247 INFO [stderr]  --> tests/integration_test.rs:9:1
Dec 14 04:47:59.247 INFO [stderr]   |
Dec 14 04:47:59.247 INFO [stderr] 9 | fn check_borrow_rules(){
Dec 14 04:47:59.247 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 04:47:59.247 INFO [stderr] 
Dec 14 04:47:59.943 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
Dec 14 04:47:59.951 INFO [stderr] su: No module specific data is present
Dec 14 04:48:00.527 INFO running `"docker" "inspect" "3d9eec32cd6c77a3a05fd5194f361d3728ba7ac6e61fc460ff3a5c142309eaae"`
Dec 14 04:48:00.851 INFO running `"docker" "rm" "-f" "3d9eec32cd6c77a3a05fd5194f361d3728ba7ac6e61fc460ff3a5c142309eaae"`
Dec 14 04:48:01.379 INFO [stdout] 3d9eec32cd6c77a3a05fd5194f361d3728ba7ac6e61fc460ff3a5c142309eaae
Dec 14 04:48:01.519 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 14 04:48:02.247 INFO [stdout] 09bfb092c8fbaf3daa81639cc17e395404b48f4081c7366585819da21c4bc8be
Dec 14 04:48:02.248 INFO running `"docker" "start" "-a" "09bfb092c8fbaf3daa81639cc17e395404b48f4081c7366585819da21c4bc8be"`
Dec 14 04:48:03.386 INFO [stderr] usermod: no changes
Dec 14 04:48:03.435 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 04:48:03.441 INFO [stderr]      Running /target/debug/deps/learn_error_handling-44285fa0d89f7092
Dec 14 04:48:03.448 INFO [stdout] 
Dec 14 04:48:03.448 INFO [stdout] running 3 tests
Dec 14 04:48:03.463 INFO [stdout] test smart_pointer::rc::test_rc ... ok
Dec 14 04:48:03.468 INFO [stdout] test smart_pointer::ref_cell::check_borrow_rules ... ok
Dec 14 04:48:03.535 INFO [stdout] test read::tests::greater_than_100 ... ok
Dec 14 04:48:03.535 INFO [stdout] 
Dec 14 04:48:03.535 INFO [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:48:03.535 INFO [stdout] 
Dec 14 04:48:03.535 INFO [stderr]      Running /target/debug/deps/learn_error_handling-b6f56d8dc705fc29
Dec 14 04:48:03.539 INFO [stdout] 
Dec 14 04:48:03.539 INFO [stdout] running 0 tests
Dec 14 04:48:03.539 INFO [stdout] 
Dec 14 04:48:03.539 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:48:03.539 INFO [stdout] 
Dec 14 04:48:03.551 INFO [stdout] 
Dec 14 04:48:03.551 INFO [stderr]      Running /target/debug/deps/integration_test-333b03753df4c07a
Dec 14 04:48:03.551 INFO [stdout] running 0 tests
Dec 14 04:48:03.551 INFO [stderr]    Doc-tests learn_error_handling
Dec 14 04:48:03.551 INFO [stdout] 
Dec 14 04:48:03.551 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:48:03.551 INFO [stdout] 
Dec 14 04:48:04.207 INFO [stdout] 
Dec 14 04:48:04.207 INFO [stdout] running 0 tests
Dec 14 04:48:04.207 INFO [stdout] 
Dec 14 04:48:04.207 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:48:04.207 INFO [stdout] 
Dec 14 04:48:04.210 INFO [stderr] su: No module specific data is present
Dec 14 04:48:04.891 INFO running `"docker" "inspect" "09bfb092c8fbaf3daa81639cc17e395404b48f4081c7366585819da21c4bc8be"`
Dec 14 04:48:05.275 INFO running `"docker" "rm" "-f" "09bfb092c8fbaf3daa81639cc17e395404b48f4081c7366585819da21c4bc8be"`
Dec 14 04:48:05.521 INFO [stdout] 09bfb092c8fbaf3daa81639cc17e395404b48f4081c7366585819da21c4bc8be