Dec 13 18:52:01.645 INFO testing futurepaul/hello_server_learning against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 18:52:01.645 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 13 18:52:01.843 INFO [stdout] 50685c9b5b56020aa103d1a8a6f3666d66748cde7e6303fbebfecc2d653d0f8b
Dec 13 18:52:01.845 INFO running `"docker" "start" "-a" "50685c9b5b56020aa103d1a8a6f3666d66748cde7e6303fbebfecc2d653d0f8b"`
Dec 13 18:52:02.339 INFO [stderr] usermod: no changes
Dec 13 18:52:02.415 INFO [stderr]    Compiling hello v0.1.0 (/source)
Dec 13 18:52:03.149 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 13 18:52:03.149 INFO [stderr]  --> src/lib.rs:7:15
Dec 13 18:52:03.149 INFO [stderr]   |
Dec 13 18:52:03.149 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 13 18:52:03.149 INFO [stderr]   |               ^^^^^  ^^^^
Dec 13 18:52:03.149 INFO [stderr]   |
Dec 13 18:52:03.149 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 18:52:03.149 INFO [stderr] 
Dec 13 18:52:03.219 INFO [stderr] warning: field is never used: `workers`
Dec 13 18:52:03.219 INFO [stderr]   --> src/lib.rs:10:3
Dec 13 18:52:03.219 INFO [stderr]    |
Dec 13 18:52:03.219 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 13 18:52:03.219 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 13 18:52:03.219 INFO [stderr]    |
Dec 13 18:52:03.219 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 18:52:03.219 INFO [stderr] 
Dec 13 18:52:03.219 INFO [stderr] warning: field is never used: `id`
Dec 13 18:52:03.219 INFO [stderr]   --> src/lib.rs:59:3
Dec 13 18:52:03.219 INFO [stderr]    |
Dec 13 18:52:03.219 INFO [stderr] 59 |   id: usize,
Dec 13 18:52:03.219 INFO [stderr]    |   ^^^^^^^^^
Dec 13 18:52:03.219 INFO [stderr] 
Dec 13 18:52:03.219 INFO [stderr] warning: field is never used: `thread`
Dec 13 18:52:03.219 INFO [stderr]   --> src/lib.rs:60:3
Dec 13 18:52:03.219 INFO [stderr]    |
Dec 13 18:52:03.219 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 13 18:52:03.219 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 18:52:03.219 INFO [stderr] 
Dec 13 18:52:04.390 INFO [stderr] warning: unused `#[macro_use]` import
Dec 13 18:52:04.390 INFO [stderr]  --> src/main.rs:1:1
Dec 13 18:52:04.390 INFO [stderr]   |
Dec 13 18:52:04.390 INFO [stderr] 1 | #[macro_use]
Dec 13 18:52:04.390 INFO [stderr]   | ^^^^^^^^^^^^
Dec 13 18:52:04.390 INFO [stderr]   |
Dec 13 18:52:04.390 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 18:52:04.390 INFO [stderr] 
Dec 13 18:52:04.443 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 13 18:52:04.443 INFO [stderr]   --> src/main.rs:28:7
Dec 13 18:52:04.443 INFO [stderr]    |
Dec 13 18:52:04.443 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 13 18:52:04.443 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 13 18:52:04.443 INFO [stderr]    |
Dec 13 18:52:04.443 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 18:52:04.443 INFO [stderr] 
Dec 13 18:52:04.443 INFO [stderr] warning: unused variable: `how_much_written`
Dec 13 18:52:04.443 INFO [stderr]   --> src/main.rs:59:7
Dec 13 18:52:04.443 INFO [stderr]    |
Dec 13 18:52:04.443 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 13 18:52:04.443 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 13 18:52:04.443 INFO [stderr] 
Dec 13 18:52:05.007 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.65s
Dec 13 18:52:05.015 INFO [stderr] su: No module specific data is present
Dec 13 18:52:05.479 INFO running `"docker" "inspect" "50685c9b5b56020aa103d1a8a6f3666d66748cde7e6303fbebfecc2d653d0f8b"`
Dec 13 18:52:05.608 INFO running `"docker" "rm" "-f" "50685c9b5b56020aa103d1a8a6f3666d66748cde7e6303fbebfecc2d653d0f8b"`
Dec 13 18:52:05.814 INFO [stdout] 50685c9b5b56020aa103d1a8a6f3666d66748cde7e6303fbebfecc2d653d0f8b
Dec 13 18:52:05.817 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 13 18:52:06.037 INFO [stdout] a57517ff25df9aa0ee053c2fab7ae9376f003c65897422474d881c521467a4e3
Dec 13 18:52:06.039 INFO running `"docker" "start" "-a" "a57517ff25df9aa0ee053c2fab7ae9376f003c65897422474d881c521467a4e3"`
Dec 13 18:52:06.434 INFO [stderr] usermod: no changes
Dec 13 18:52:06.483 INFO [stderr]    Compiling hello v0.1.0 (/source)
Dec 13 18:52:07.027 INFO [stderr] warning: unused `#[macro_use]` import
Dec 13 18:52:07.027 INFO [stderr]  --> src/main.rs:1:1
Dec 13 18:52:07.027 INFO [stderr]   |
Dec 13 18:52:07.027 INFO [stderr] 1 | #[macro_use]
Dec 13 18:52:07.027 INFO [stderr]   | ^^^^^^^^^^^^
Dec 13 18:52:07.027 INFO [stderr]   |
Dec 13 18:52:07.027 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 18:52:07.027 INFO [stderr] 
Dec 13 18:52:07.047 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 13 18:52:07.047 INFO [stderr]  --> src/lib.rs:7:15
Dec 13 18:52:07.047 INFO [stderr]   |
Dec 13 18:52:07.047 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 13 18:52:07.047 INFO [stderr]   |               ^^^^^  ^^^^
Dec 13 18:52:07.047 INFO [stderr]   |
Dec 13 18:52:07.047 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 18:52:07.047 INFO [stderr] 
Dec 13 18:52:07.079 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 13 18:52:07.079 INFO [stderr]   --> src/main.rs:28:7
Dec 13 18:52:07.079 INFO [stderr]    |
Dec 13 18:52:07.079 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 13 18:52:07.079 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 13 18:52:07.079 INFO [stderr]    |
Dec 13 18:52:07.079 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 18:52:07.079 INFO [stderr] 
Dec 13 18:52:07.079 INFO [stderr] warning: unused variable: `how_much_written`
Dec 13 18:52:07.079 INFO [stderr]   --> src/main.rs:59:7
Dec 13 18:52:07.079 INFO [stderr]    |
Dec 13 18:52:07.079 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 13 18:52:07.079 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 13 18:52:07.079 INFO [stderr] 
Dec 13 18:52:07.101 INFO [stderr] warning: field is never used: `workers`
Dec 13 18:52:07.101 INFO [stderr]   --> src/lib.rs:10:3
Dec 13 18:52:07.101 INFO [stderr]    |
Dec 13 18:52:07.101 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 13 18:52:07.101 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 13 18:52:07.101 INFO [stderr]    |
Dec 13 18:52:07.101 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 18:52:07.101 INFO [stderr] 
Dec 13 18:52:07.101 INFO [stderr] warning: field is never used: `id`
Dec 13 18:52:07.101 INFO [stderr]   --> src/lib.rs:59:3
Dec 13 18:52:07.101 INFO [stderr]    |
Dec 13 18:52:07.101 INFO [stderr] 59 |   id: usize,
Dec 13 18:52:07.101 INFO [stderr]    |   ^^^^^^^^^
Dec 13 18:52:07.101 INFO [stderr] 
Dec 13 18:52:07.101 INFO [stderr] warning: field is never used: `thread`
Dec 13 18:52:07.101 INFO [stderr]   --> src/lib.rs:60:3
Dec 13 18:52:07.101 INFO [stderr]    |
Dec 13 18:52:07.101 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 13 18:52:07.101 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 18:52:07.101 INFO [stderr] 
Dec 13 18:52:07.359 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 13 18:52:07.361 INFO [stderr] su: No module specific data is present
Dec 13 18:52:07.683 INFO running `"docker" "inspect" "a57517ff25df9aa0ee053c2fab7ae9376f003c65897422474d881c521467a4e3"`
Dec 13 18:52:07.773 INFO running `"docker" "rm" "-f" "a57517ff25df9aa0ee053c2fab7ae9376f003c65897422474d881c521467a4e3"`
Dec 13 18:52:07.864 INFO [stdout] a57517ff25df9aa0ee053c2fab7ae9376f003c65897422474d881c521467a4e3
Dec 13 18:52:07.866 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 13 18:52:08.200 INFO [stdout] 44c38e593715b567acbb7ad47e1af1658dd08cd1c1b5239c9e79ea60cadca438
Dec 13 18:52:08.201 INFO running `"docker" "start" "-a" "44c38e593715b567acbb7ad47e1af1658dd08cd1c1b5239c9e79ea60cadca438"`
Dec 13 18:52:08.679 INFO [stderr] usermod: no changes
Dec 13 18:52:08.750 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 13 18:52:08.751 INFO [stderr]      Running /target/debug/deps/hello-3d3cfbe66543ab27
Dec 13 18:52:08.751 INFO [stderr]      Running /target/debug/deps/hello-7c2e3cbeb7d44536
Dec 13 18:52:08.751 INFO [stderr]    Doc-tests hello
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:08.751 INFO [stdout] running 0 tests
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:08.751 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:08.751 INFO [stdout] running 0 tests
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:08.751 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 18:52:08.751 INFO [stdout] 
Dec 13 18:52:09.593 INFO [stdout] 
Dec 13 18:52:09.593 INFO [stdout] running 0 tests
Dec 13 18:52:09.593 INFO [stdout] 
Dec 13 18:52:09.593 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 18:52:09.593 INFO [stdout] 
Dec 13 18:52:09.600 INFO [stderr] su: No module specific data is present
Dec 13 18:52:09.984 INFO running `"docker" "inspect" "44c38e593715b567acbb7ad47e1af1658dd08cd1c1b5239c9e79ea60cadca438"`
Dec 13 18:52:10.063 INFO running `"docker" "rm" "-f" "44c38e593715b567acbb7ad47e1af1658dd08cd1c1b5239c9e79ea60cadca438"`
Dec 13 18:52:10.203 INFO [stdout] 44c38e593715b567acbb7ad47e1af1658dd08cd1c1b5239c9e79ea60cadca438