Nov 17 16:26:55.886 INFO testing CGQAQ/Rust_Learn against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 16:26:55.886 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 16:26:56.057 INFO [stdout] 5dd660e2c08ec9db9b8f2e8424f42164df8c687b3095c12d8bb03177bb56f972
Nov 17 16:26:56.059 INFO running `"docker" "start" "-a" "5dd660e2c08ec9db9b8f2e8424f42164df8c687b3095c12d8bb03177bb56f972"`
Nov 17 16:26:56.435 INFO [stderr] usermod: no changes
Nov 17 16:26:56.461 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Nov 17 16:26:56.463 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Nov 17 16:26:56.463 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Nov 17 16:26:56.463 INFO [stderr] files will be included as a binary target:
Nov 17 16:26:56.463 INFO [stderr] 
Nov 17 16:26:56.463 INFO [stderr] * /source/src/main.rs
Nov 17 16:26:56.463 INFO [stderr] 
Nov 17 16:26:56.463 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Nov 17 16:26:56.463 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Nov 17 16:26:56.463 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Nov 17 16:26:56.463 INFO [stderr] section. You may also move the files to a location where Cargo would not
Nov 17 16:26:56.463 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Nov 17 16:26:56.463 INFO [stderr] 
Nov 17 16:26:56.463 INFO [stderr] For more information on this warning you can consult
Nov 17 16:26:56.463 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Nov 17 16:26:56.463 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Nov 17 16:26:56.463 INFO [stderr] please set bin.path in Cargo.toml
Nov 17 16:26:56.468 INFO [stderr]    Compiling learn v0.1.0 (/source)
Nov 17 16:26:56.900 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:26:56.900 INFO [stderr]   --> src/bin/mthread.rs:11:9
Nov 17 16:26:56.900 INFO [stderr]    |
Nov 17 16:26:56.900 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Nov 17 16:26:56.900 INFO [stderr]    |         ----^^^
Nov 17 16:26:56.901 INFO [stderr]    |         |
Nov 17 16:26:56.901 INFO [stderr]    |         help: remove this `mut`
Nov 17 16:26:56.901 INFO [stderr]    |
Nov 17 16:26:56.902 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 16:26:56.902 INFO [stderr] 
Nov 17 16:26:56.903 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:26:56.903 INFO [stderr]   --> src/bin/mthread.rs:27:13
Nov 17 16:26:56.904 INFO [stderr]    |
Nov 17 16:26:56.904 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Nov 17 16:26:56.905 INFO [stderr]    |             ----^^^
Nov 17 16:26:56.905 INFO [stderr]    |             |
Nov 17 16:26:56.906 INFO [stderr]    |             help: remove this `mut`
Nov 17 16:26:56.906 INFO [stderr] 
Nov 17 16:26:56.907 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:26:56.908 INFO [stderr]   --> src/bin/mthread.rs:29:13
Nov 17 16:26:56.908 INFO [stderr]    |
Nov 17 16:26:56.909 INFO [stderr] 29 |         let mut tx = tx.clone();
Nov 17 16:26:56.909 INFO [stderr]    |             ----^^
Nov 17 16:26:56.910 INFO [stderr]    |             |
Nov 17 16:26:56.910 INFO [stderr]    |             help: remove this `mut`
Nov 17 16:26:56.911 INFO [stderr] 
Nov 17 16:26:56.911 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:26:56.912 INFO [stderr]   --> src/bin/mthread.rs:20:21
Nov 17 16:26:56.912 INFO [stderr]    |
Nov 17 16:26:56.913 INFO [stderr] 20 |                     a.send(1);
Nov 17 16:26:56.914 INFO [stderr]    |                     ^^^^^^^^^^
Nov 17 16:26:56.914 INFO [stderr]    |
Nov 17 16:26:56.914 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 16:26:56.914 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:26:56.914 INFO [stderr] 
Nov 17 16:26:56.914 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:26:56.914 INFO [stderr]   --> src/bin/mthread.rs:34:17
Nov 17 16:26:56.914 INFO [stderr]    |
Nov 17 16:26:56.914 INFO [stderr] 34 |                 tx.send(d);
Nov 17 16:26:56.914 INFO [stderr]    |                 ^^^^^^^^^^^
Nov 17 16:26:56.914 INFO [stderr]    |
Nov 17 16:26:56.914 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:26:56.914 INFO [stderr] 
Nov 17 16:26:57.905 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
Nov 17 16:26:57.909 INFO [stderr] su: No module specific data is present
Nov 17 16:26:58.303 INFO running `"docker" "inspect" "5dd660e2c08ec9db9b8f2e8424f42164df8c687b3095c12d8bb03177bb56f972"`
Nov 17 16:26:58.405 INFO running `"docker" "rm" "-f" "5dd660e2c08ec9db9b8f2e8424f42164df8c687b3095c12d8bb03177bb56f972"`
Nov 17 16:26:58.526 INFO [stdout] 5dd660e2c08ec9db9b8f2e8424f42164df8c687b3095c12d8bb03177bb56f972
Nov 17 16:26:58.529 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 16:26:58.849 INFO [stdout] a626d2a2a84e7a53a3292967841b7b7c27bd58d2babaab4d399134b1774b2138
Nov 17 16:26:58.852 INFO running `"docker" "start" "-a" "a626d2a2a84e7a53a3292967841b7b7c27bd58d2babaab4d399134b1774b2138"`
Nov 17 16:26:59.907 INFO [stderr] usermod: no changes
Nov 17 16:26:59.973 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Nov 17 16:26:59.973 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Nov 17 16:26:59.973 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Nov 17 16:26:59.973 INFO [stderr] files will be included as a binary target:
Nov 17 16:26:59.973 INFO [stderr] 
Nov 17 16:26:59.973 INFO [stderr] * /source/src/main.rs
Nov 17 16:26:59.973 INFO [stderr] 
Nov 17 16:26:59.973 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Nov 17 16:26:59.973 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Nov 17 16:26:59.973 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Nov 17 16:26:59.973 INFO [stderr] section. You may also move the files to a location where Cargo would not
Nov 17 16:26:59.973 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Nov 17 16:26:59.973 INFO [stderr] 
Nov 17 16:26:59.973 INFO [stderr] For more information on this warning you can consult
Nov 17 16:26:59.973 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Nov 17 16:26:59.973 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Nov 17 16:26:59.973 INFO [stderr] please set bin.path in Cargo.toml
Nov 17 16:26:59.986 INFO [stderr]    Compiling learn v0.1.0 (/source)
Nov 17 16:27:00.599 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:27:00.600 INFO [stderr]   --> src/bin/mthread.rs:11:9
Nov 17 16:27:00.600 INFO [stderr]    |
Nov 17 16:27:00.600 INFO [stderr] 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Nov 17 16:27:00.601 INFO [stderr]    |         ----^^^
Nov 17 16:27:00.601 INFO [stderr]    |         |
Nov 17 16:27:00.601 INFO [stderr]    |         help: remove this `mut`
Nov 17 16:27:00.602 INFO [stderr]    |
Nov 17 16:27:00.602 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 16:27:00.602 INFO [stderr] 
Nov 17 16:27:00.603 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:27:00.603 INFO [stderr]   --> src/bin/mthread.rs:27:13
Nov 17 16:27:00.603 INFO [stderr]    |
Nov 17 16:27:00.604 INFO [stderr] 27 |         let mut ptr = ptr.clone();
Nov 17 16:27:00.604 INFO [stderr]    |             ----^^^
Nov 17 16:27:00.604 INFO [stderr]    |             |
Nov 17 16:27:00.605 INFO [stderr]    |             help: remove this `mut`
Nov 17 16:27:00.605 INFO [stderr] 
Nov 17 16:27:00.605 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:27:00.605 INFO [stderr]   --> src/bin/mthread.rs:29:13
Nov 17 16:27:00.606 INFO [stderr]    |
Nov 17 16:27:00.606 INFO [stderr] 29 |         let mut tx = tx.clone();
Nov 17 16:27:00.606 INFO [stderr]    |             ----^^
Nov 17 16:27:00.607 INFO [stderr]    |             |
Nov 17 16:27:00.607 INFO [stderr]    |             help: remove this `mut`
Nov 17 16:27:00.607 INFO [stderr] 
Nov 17 16:27:00.607 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:27:00.608 INFO [stderr]   --> src/bin/mthread.rs:20:21
Nov 17 16:27:00.608 INFO [stderr]    |
Nov 17 16:27:00.608 INFO [stderr] 20 |                     a.send(1);
Nov 17 16:27:00.608 INFO [stderr]    |                     ^^^^^^^^^^
Nov 17 16:27:00.609 INFO [stderr]    |
Nov 17 16:27:00.609 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 16:27:00.609 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:27:00.610 INFO [stderr] 
Nov 17 16:27:00.610 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:27:00.610 INFO [stderr]   --> src/bin/mthread.rs:34:17
Nov 17 16:27:00.610 INFO [stderr]    |
Nov 17 16:27:00.611 INFO [stderr] 34 |                 tx.send(d);
Nov 17 16:27:00.611 INFO [stderr]    |                 ^^^^^^^^^^^
Nov 17 16:27:00.611 INFO [stderr]    |
Nov 17 16:27:00.612 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:27:00.612 INFO [stderr] 
Nov 17 16:27:00.979 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Nov 17 16:27:00.983 INFO [stderr] su: No module specific data is present
Nov 17 16:27:01.259 INFO running `"docker" "inspect" "a626d2a2a84e7a53a3292967841b7b7c27bd58d2babaab4d399134b1774b2138"`
Nov 17 16:27:01.365 INFO running `"docker" "rm" "-f" "a626d2a2a84e7a53a3292967841b7b7c27bd58d2babaab4d399134b1774b2138"`
Nov 17 16:27:01.454 INFO [stdout] a626d2a2a84e7a53a3292967841b7b7c27bd58d2babaab4d399134b1774b2138
Nov 17 16:27:01.456 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-1/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 16:27:01.660 INFO [stdout] 86df266d2e2b45f9f77bbea2a2e8e1d40daf6823bf7b381f827115dbccbc545b
Nov 17 16:27:01.668 INFO running `"docker" "start" "-a" "86df266d2e2b45f9f77bbea2a2e8e1d40daf6823bf7b381f827115dbccbc545b"`
Nov 17 16:27:02.020 INFO [stderr] usermod: no changes
Nov 17 16:27:02.044 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Nov 17 16:27:02.044 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Nov 17 16:27:02.044 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Nov 17 16:27:02.044 INFO [stderr] files will be included as a binary target:
Nov 17 16:27:02.044 INFO [stderr] 
Nov 17 16:27:02.044 INFO [stderr] * /source/src/main.rs
Nov 17 16:27:02.044 INFO [stderr] 
Nov 17 16:27:02.044 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Nov 17 16:27:02.044 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Nov 17 16:27:02.044 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Nov 17 16:27:02.044 INFO [stderr] section. You may also move the files to a location where Cargo would not
Nov 17 16:27:02.044 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Nov 17 16:27:02.044 INFO [stderr] 
Nov 17 16:27:02.045 INFO [stderr] For more information on this warning you can consult
Nov 17 16:27:02.045 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Nov 17 16:27:02.045 INFO [stderr] warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Nov 17 16:27:02.045 INFO [stderr] please set bin.path in Cargo.toml
Nov 17 16:27:02.046 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 17 16:27:02.046 INFO [stderr]      Running /target/debug/deps/demo-e4b12ec9028d4266
Nov 17 16:27:02.056 INFO [stdout] 
Nov 17 16:27:02.056 INFO [stdout] running 0 tests
Nov 17 16:27:02.056 INFO [stdout] 
Nov 17 16:27:02.056 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 16:27:02.056 INFO [stdout] 
Nov 17 16:27:02.056 INFO [stderr]      Running /target/debug/deps/main-279211acb657d33e
Nov 17 16:27:02.058 INFO [stdout] 
Nov 17 16:27:02.058 INFO [stderr]      Running /target/debug/deps/mthread-931fa6f7de9b0523
Nov 17 16:27:02.058 INFO [stdout] running 0 tests
Nov 17 16:27:02.058 INFO [stdout] 
Nov 17 16:27:02.058 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 16:27:02.058 INFO [stdout] 
Nov 17 16:27:02.059 INFO [stdout] 
Nov 17 16:27:02.059 INFO [stdout] running 0 tests
Nov 17 16:27:02.059 INFO [stdout] 
Nov 17 16:27:02.059 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 16:27:02.059 INFO [stdout] 
Nov 17 16:27:02.061 INFO [stderr] su: No module specific data is present
Nov 17 16:27:02.318 INFO running `"docker" "inspect" "86df266d2e2b45f9f77bbea2a2e8e1d40daf6823bf7b381f827115dbccbc545b"`
Nov 17 16:27:02.396 INFO running `"docker" "rm" "-f" "86df266d2e2b45f9f77bbea2a2e8e1d40daf6823bf7b381f827115dbccbc545b"`
Nov 17 16:27:02.473 INFO [stdout] 86df266d2e2b45f9f77bbea2a2e8e1d40daf6823bf7b381f827115dbccbc545b