Dec 14 11:36:59.219 INFO testing CGQAQ/Rust_Learn against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 11:36:59.220 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11:36:59.679 INFO [stdout] e7f1b5aafc8ba9f3686d974639b815c1b31b6e392096d1108b28fed910317235
Dec 14 11:36:59.681 INFO running `"docker" "start" "-a" "e7f1b5aafc8ba9f3686d974639b815c1b31b6e392096d1108b28fed910317235"`
Dec 14 11:37:00.921 INFO [stderr] usermod: no changes
Dec 14 11:37:00.963 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:00.963 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:00.963 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:00.963 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:00.963 INFO [stderr] 
Dec 14 11:37:00.963 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:00.963 INFO [stderr] 
Dec 14 11:37:00.963 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:00.963 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:00.963 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:00.963 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:00.963 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:00.963 INFO [stderr] 
Dec 14 11:37:00.963 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:00.963 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:00.963 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:00.963 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:00.967 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 14 11:37:01.607 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:01.607 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 14 11:37:01.607 INFO [stderr]    |         ----^^^
Dec 14 11:37:01.607 INFO [stderr]    |         |
Dec 14 11:37:01.607 INFO [stderr]    |         help: remove this `mut`
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:37:01.607 INFO [stderr] 
Dec 14 11:37:01.607 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:01.607 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 14 11:37:01.607 INFO [stderr]    |             ----^^^
Dec 14 11:37:01.607 INFO [stderr]    |             |
Dec 14 11:37:01.607 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:01.607 INFO [stderr] 
Dec 14 11:37:01.607 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:01.607 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 14 11:37:01.607 INFO [stderr]    |             ----^^
Dec 14 11:37:01.607 INFO [stderr]    |             |
Dec 14 11:37:01.607 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:01.607 INFO [stderr] 
Dec 14 11:37:01.607 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:01.607 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr] 20 |                     a.send(1);
Dec 14 11:37:01.607 INFO [stderr]    |                     ^^^^^^^^^^
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:37:01.607 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:01.607 INFO [stderr] 
Dec 14 11:37:01.607 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:01.607 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr] 34 |                 tx.send(d);
Dec 14 11:37:01.607 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 14 11:37:01.607 INFO [stderr]    |
Dec 14 11:37:01.607 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:01.607 INFO [stderr] 
Dec 14 11:37:03.364 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.41s
Dec 14 11:37:03.370 INFO [stderr] su: No module specific data is present
Dec 14 11:37:04.081 INFO running `"docker" "inspect" "e7f1b5aafc8ba9f3686d974639b815c1b31b6e392096d1108b28fed910317235"`
Dec 14 11:37:04.369 INFO running `"docker" "rm" "-f" "e7f1b5aafc8ba9f3686d974639b815c1b31b6e392096d1108b28fed910317235"`
Dec 14 11:37:04.662 INFO [stdout] e7f1b5aafc8ba9f3686d974639b815c1b31b6e392096d1108b28fed910317235
Dec 14 11:37:04.669 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11:37:05.151 INFO [stdout] 42a33553e266b91ba6b30e5565b6351ac4cd6ee51d896b12283a2203d67e5c9a
Dec 14 11:37:05.156 INFO running `"docker" "start" "-a" "42a33553e266b91ba6b30e5565b6351ac4cd6ee51d896b12283a2203d67e5c9a"`
Dec 14 11:37:06.355 INFO [stderr] usermod: no changes
Dec 14 11:37:06.443 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:06.443 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:06.443 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:06.443 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:06.443 INFO [stderr] 
Dec 14 11:37:06.443 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:06.443 INFO [stderr] 
Dec 14 11:37:06.443 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:06.443 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:06.443 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:06.443 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:06.443 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:06.443 INFO [stderr] 
Dec 14 11:37:06.443 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:06.443 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:06.443 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:06.443 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:06.443 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 14 11:37:07.772 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:07.773 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 14 11:37:07.773 INFO [stderr]    |         ----^^^
Dec 14 11:37:07.773 INFO [stderr]    |         |
Dec 14 11:37:07.773 INFO [stderr]    |         help: remove this `mut`
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:37:07.773 INFO [stderr] 
Dec 14 11:37:07.773 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:07.773 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 14 11:37:07.773 INFO [stderr]    |             ----^^^
Dec 14 11:37:07.773 INFO [stderr]    |             |
Dec 14 11:37:07.773 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:07.773 INFO [stderr] 
Dec 14 11:37:07.773 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:37:07.773 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 14 11:37:07.773 INFO [stderr]    |             ----^^
Dec 14 11:37:07.773 INFO [stderr]    |             |
Dec 14 11:37:07.773 INFO [stderr]    |             help: remove this `mut`
Dec 14 11:37:07.773 INFO [stderr] 
Dec 14 11:37:07.773 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:07.773 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr] 20 |                     a.send(1);
Dec 14 11:37:07.773 INFO [stderr]    |                     ^^^^^^^^^^
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:37:07.773 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:07.773 INFO [stderr] 
Dec 14 11:37:07.773 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:37:07.773 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr] 34 |                 tx.send(d);
Dec 14 11:37:07.773 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 14 11:37:07.773 INFO [stderr]    |
Dec 14 11:37:07.773 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:37:07.773 INFO [stderr] 
Dec 14 11:37:08.065 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
Dec 14 11:37:08.075 INFO [stderr] su: No module specific data is present
Dec 14 11:37:08.540 INFO running `"docker" "inspect" "42a33553e266b91ba6b30e5565b6351ac4cd6ee51d896b12283a2203d67e5c9a"`
Dec 14 11:37:08.807 INFO running `"docker" "rm" "-f" "42a33553e266b91ba6b30e5565b6351ac4cd6ee51d896b12283a2203d67e5c9a"`
Dec 14 11:37:09.190 INFO [stdout] 42a33553e266b91ba6b30e5565b6351ac4cd6ee51d896b12283a2203d67e5c9a
Dec 14 11:37:09.192 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11:37:09.675 INFO [stdout] 105de47ababb1d63bb69d559298cd6c6dc87d69a02862847d36fa736eccb386c
Dec 14 11:37:09.687 INFO running `"docker" "start" "-a" "105de47ababb1d63bb69d559298cd6c6dc87d69a02862847d36fa736eccb386c"`
Dec 14 11:37:11.123 INFO [stderr] usermod: no changes
Dec 14 11:37:11.173 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 14 11:37:11.173 INFO [stdout] 
Dec 14 11:37:11.173 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 14 11:37:11.174 INFO [stdout] running 0 tests
Dec 14 11:37:11.174 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 11:37:11.174 INFO [stdout] 
Dec 14 11:37:11.174 INFO [stderr] files will be included as a binary target:
Dec 14 11:37:11.174 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:11.174 INFO [stderr] 
Dec 14 11:37:11.174 INFO [stdout] 
Dec 14 11:37:11.174 INFO [stderr] * /source/src/main.rs
Dec 14 11:37:11.174 INFO [stderr] 
Dec 14 11:37:11.174 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 11:37:11.174 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 14 11:37:11.174 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 14 11:37:11.174 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 11:37:11.174 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 11:37:11.174 INFO [stderr] 
Dec 14 11:37:11.174 INFO [stderr] For more information on this warning you can consult
Dec 14 11:37:11.174 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 11:37:11.174 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 14 11:37:11.174 INFO [stderr] please set bin.path in Cargo.toml
Dec 14 11:37:11.174 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 11:37:11.174 INFO [stderr]      Running /target/debug/deps/demo-f03ff622671df7c7
Dec 14 11:37:11.174 INFO [stderr]      Running /target/debug/deps/main-14a0a4ca565f44e8
Dec 14 11:37:11.186 INFO [stdout] 
Dec 14 11:37:11.186 INFO [stdout] running 0 tests
Dec 14 11:37:11.186 INFO [stdout] 
Dec 14 11:37:11.186 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:11.186 INFO [stdout] 
Dec 14 11:37:11.195 INFO [stderr]      Running /target/debug/deps/mthread-61c81fc0ac052bb6
Dec 14 11:37:11.206 INFO [stderr] su: No module specific data is present
Dec 14 11:37:11.206 INFO [stdout] 
Dec 14 11:37:11.206 INFO [stdout] running 0 tests
Dec 14 11:37:11.206 INFO [stdout] 
Dec 14 11:37:11.206 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:37:11.206 INFO [stdout] 
Dec 14 11:37:11.917 INFO running `"docker" "inspect" "105de47ababb1d63bb69d559298cd6c6dc87d69a02862847d36fa736eccb386c"`
Dec 14 11:37:12.216 INFO running `"docker" "rm" "-f" "105de47ababb1d63bb69d559298cd6c6dc87d69a02862847d36fa736eccb386c"`
Dec 14 11:37:12.483 INFO [stdout] 105de47ababb1d63bb69d559298cd6c6dc87d69a02862847d36fa736eccb386c