Dec 06 15:13:02.753 INFO testing CGQAQ/Rust_Learn against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 15:13:02.753 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 15:13:02.931 INFO [stdout] b704e1a0623f27eca9300dfb73ab8703f2ef20c354fa98e8376295a519d802bf
Dec 06 15:13:02.934 INFO running `"docker" "start" "-a" "b704e1a0623f27eca9300dfb73ab8703f2ef20c354fa98e8376295a519d802bf"`
Dec 06 15:13:03.292 INFO [stderr] usermod: no changes
Dec 06 15:13:03.316 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 06 15:13:03.316 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 06 15:13:03.316 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 06 15:13:03.316 INFO [stderr] files will be included as a binary target:
Dec 06 15:13:03.316 INFO [stderr] 
Dec 06 15:13:03.316 INFO [stderr] * /source/src/main.rs
Dec 06 15:13:03.316 INFO [stderr] 
Dec 06 15:13:03.316 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 06 15:13:03.316 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 06 15:13:03.316 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 06 15:13:03.316 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 06 15:13:03.316 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 06 15:13:03.316 INFO [stderr] 
Dec 06 15:13:03.316 INFO [stderr] For more information on this warning you can consult
Dec 06 15:13:03.316 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 06 15:13:03.316 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 06 15:13:03.316 INFO [stderr] please set bin.path in Cargo.toml
Dec 06 15:13:03.322 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 06 15:13:03.624 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:03.624 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 06 15:13:03.624 INFO [stderr]    |
Dec 06 15:13:03.624 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 06 15:13:03.624 INFO [stderr]    |         ----^^^
Dec 06 15:13:03.624 INFO [stderr]    |         |
Dec 06 15:13:03.624 INFO [stderr]    |         help: remove this `mut`
Dec 06 15:13:03.624 INFO [stderr]    |
Dec 06 15:13:03.624 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 15:13:03.624 INFO [stderr] 
Dec 06 15:13:03.624 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:03.624 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 06 15:13:03.624 INFO [stderr]    |
Dec 06 15:13:03.624 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 06 15:13:03.624 INFO [stderr]    |             ----^^^
Dec 06 15:13:03.624 INFO [stderr]    |             |
Dec 06 15:13:03.624 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:13:03.624 INFO [stderr] 
Dec 06 15:13:03.625 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:03.625 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 06 15:13:03.625 INFO [stderr]    |
Dec 06 15:13:03.625 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 06 15:13:03.625 INFO [stderr]    |             ----^^
Dec 06 15:13:03.625 INFO [stderr]    |             |
Dec 06 15:13:03.625 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:13:03.625 INFO [stderr] 
Dec 06 15:13:03.625 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 15:13:03.625 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 06 15:13:03.625 INFO [stderr]    |
Dec 06 15:13:03.625 INFO [stderr] 20 |                     a.send(1);
Dec 06 15:13:03.625 INFO [stderr]    |                     ^^^^^^^^^^
Dec 06 15:13:03.625 INFO [stderr]    |
Dec 06 15:13:03.625 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 15:13:03.625 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 15:13:03.625 INFO [stderr] 
Dec 06 15:13:03.625 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 15:13:03.625 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 06 15:13:03.625 INFO [stderr]    |
Dec 06 15:13:03.625 INFO [stderr] 34 |                 tx.send(d);
Dec 06 15:13:03.625 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 06 15:13:03.625 INFO [stderr]    |
Dec 06 15:13:03.625 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 15:13:03.625 INFO [stderr] 
Dec 06 15:13:04.247 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
Dec 06 15:13:04.250 INFO [stderr] su: No module specific data is present
Dec 06 15:13:04.500 INFO running `"docker" "inspect" "b704e1a0623f27eca9300dfb73ab8703f2ef20c354fa98e8376295a519d802bf"`
Dec 06 15:13:04.569 INFO running `"docker" "rm" "-f" "b704e1a0623f27eca9300dfb73ab8703f2ef20c354fa98e8376295a519d802bf"`
Dec 06 15:13:04.634 INFO [stdout] b704e1a0623f27eca9300dfb73ab8703f2ef20c354fa98e8376295a519d802bf
Dec 06 15:13:04.636 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 15:13:04.748 INFO [stdout] 14e1ed7d6d024407f8fda7329c24d87153b7cf7d44cc12edadb24e7f3c68b501
Dec 06 15:13:04.750 INFO running `"docker" "start" "-a" "14e1ed7d6d024407f8fda7329c24d87153b7cf7d44cc12edadb24e7f3c68b501"`
Dec 06 15:13:05.042 INFO [stderr] usermod: no changes
Dec 06 15:13:05.067 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 06 15:13:05.067 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 06 15:13:05.067 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 06 15:13:05.067 INFO [stderr] files will be included as a binary target:
Dec 06 15:13:05.067 INFO [stderr] 
Dec 06 15:13:05.067 INFO [stderr] * /source/src/main.rs
Dec 06 15:13:05.067 INFO [stderr] 
Dec 06 15:13:05.067 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 06 15:13:05.067 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 06 15:13:05.067 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 06 15:13:05.067 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 06 15:13:05.067 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 06 15:13:05.067 INFO [stderr] 
Dec 06 15:13:05.067 INFO [stderr] For more information on this warning you can consult
Dec 06 15:13:05.067 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 06 15:13:05.067 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 06 15:13:05.067 INFO [stderr] please set bin.path in Cargo.toml
Dec 06 15:13:05.069 INFO [stderr]    Compiling learn v0.1.0 (/source)
Dec 06 15:13:05.328 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:05.328 INFO [stderr]   --> src/bin/mthread.rs:11:9
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Dec 06 15:13:05.328 INFO [stderr]    |         ----^^^
Dec 06 15:13:05.328 INFO [stderr]    |         |
Dec 06 15:13:05.328 INFO [stderr]    |         help: remove this `mut`
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 15:13:05.328 INFO [stderr] 
Dec 06 15:13:05.328 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:05.328 INFO [stderr]   --> src/bin/mthread.rs:27:13
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Dec 06 15:13:05.328 INFO [stderr]    |             ----^^^
Dec 06 15:13:05.328 INFO [stderr]    |             |
Dec 06 15:13:05.328 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:13:05.328 INFO [stderr] 
Dec 06 15:13:05.328 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:13:05.328 INFO [stderr]   --> src/bin/mthread.rs:29:13
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr] 29 |         let mut tx = tx.clone();
Dec 06 15:13:05.328 INFO [stderr]    |             ----^^
Dec 06 15:13:05.328 INFO [stderr]    |             |
Dec 06 15:13:05.328 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:13:05.328 INFO [stderr] 
Dec 06 15:13:05.328 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 15:13:05.328 INFO [stderr]   --> src/bin/mthread.rs:20:21
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr] 20 |                     a.send(1);
Dec 06 15:13:05.328 INFO [stderr]    |                     ^^^^^^^^^^
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 15:13:05.328 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 15:13:05.328 INFO [stderr] 
Dec 06 15:13:05.328 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 15:13:05.328 INFO [stderr]   --> src/bin/mthread.rs:34:17
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr] 34 |                 tx.send(d);
Dec 06 15:13:05.328 INFO [stderr]    |                 ^^^^^^^^^^^
Dec 06 15:13:05.328 INFO [stderr]    |
Dec 06 15:13:05.328 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 15:13:05.328 INFO [stderr] 
Dec 06 15:13:05.550 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 06 15:13:05.553 INFO [stderr] su: No module specific data is present
Dec 06 15:13:05.771 INFO running `"docker" "inspect" "14e1ed7d6d024407f8fda7329c24d87153b7cf7d44cc12edadb24e7f3c68b501"`
Dec 06 15:13:05.830 INFO running `"docker" "rm" "-f" "14e1ed7d6d024407f8fda7329c24d87153b7cf7d44cc12edadb24e7f3c68b501"`
Dec 06 15:13:05.901 INFO [stdout] 14e1ed7d6d024407f8fda7329c24d87153b7cf7d44cc12edadb24e7f3c68b501
Dec 06 15:13:05.905 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 15:13:06.081 INFO [stdout] f5de682828093d76cfba0396c5cf8fc5cf510d1af6ddf3e84fdaddb61804ba02
Dec 06 15:13:06.083 INFO running `"docker" "start" "-a" "f5de682828093d76cfba0396c5cf8fc5cf510d1af6ddf3e84fdaddb61804ba02"`
Dec 06 15:13:06.415 INFO [stderr] usermod: no changes
Dec 06 15:13:06.436 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 06 15:13:06.436 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 06 15:13:06.436 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 06 15:13:06.436 INFO [stderr] files will be included as a binary target:
Dec 06 15:13:06.436 INFO [stderr] 
Dec 06 15:13:06.436 INFO [stderr] * /source/src/main.rs
Dec 06 15:13:06.436 INFO [stderr] 
Dec 06 15:13:06.436 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 06 15:13:06.436 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 06 15:13:06.436 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 06 15:13:06.436 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 06 15:13:06.436 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 06 15:13:06.436 INFO [stderr] 
Dec 06 15:13:06.436 INFO [stderr] For more information on this warning you can consult
Dec 06 15:13:06.436 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 06 15:13:06.436 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Dec 06 15:13:06.436 INFO [stderr] please set bin.path in Cargo.toml
Dec 06 15:13:06.437 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 06 15:13:06.437 INFO [stderr]      Running /target/debug/deps/demo-5fd9687ed1b752ae
Dec 06 15:13:06.440 INFO [stdout] 
Dec 06 15:13:06.440 INFO [stdout] running 0 tests
Dec 06 15:13:06.440 INFO [stdout] 
Dec 06 15:13:06.440 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 15:13:06.440 INFO [stdout] 
Dec 06 15:13:06.440 INFO [stderr]      Running /target/debug/deps/main-9fd8edefaeefbd7a
Dec 06 15:13:06.441 INFO [stdout] 
Dec 06 15:13:06.441 INFO [stdout] running 0 tests
Dec 06 15:13:06.441 INFO [stdout] 
Dec 06 15:13:06.442 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 15:13:06.442 INFO [stdout] 
Dec 06 15:13:06.442 INFO [stderr]      Running /target/debug/deps/mthread-54728e18d83a80a7
Dec 06 15:13:06.443 INFO [stdout] 
Dec 06 15:13:06.443 INFO [stdout] running 0 tests
Dec 06 15:13:06.443 INFO [stdout] 
Dec 06 15:13:06.443 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 15:13:06.443 INFO [stdout] 
Dec 06 15:13:06.444 INFO [stderr] su: No module specific data is present
Dec 06 15:13:06.686 INFO running `"docker" "inspect" "f5de682828093d76cfba0396c5cf8fc5cf510d1af6ddf3e84fdaddb61804ba02"`
Dec 06 15:13:06.749 INFO running `"docker" "rm" "-f" "f5de682828093d76cfba0396c5cf8fc5cf510d1af6ddf3e84fdaddb61804ba02"`
Dec 06 15:13:06.806 INFO [stdout] f5de682828093d76cfba0396c5cf8fc5cf510d1af6ddf3e84fdaddb61804ba02