Oct 21 21:54:20.935 INFO checking CGQAQ/Rust_Learn against master#155510e377ae2a8d8ee0dad1a5f809c9062a5526 for pr-55192
Oct 21 21:54:20.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192/worker-3/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-55192/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/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 +155510e377ae2a8d8ee0dad1a5f809c9062a5526-alt check --frozen --all --all-targets" "-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"`
Oct 21 21:54:21.453 INFO blam! e9c8f77da1ca34476170cb02f00b7091bb2c0b05d95276836338d2577ad20f66
Oct 21 21:54:21.455 INFO running `"docker" "start" "-a" "e9c8f77da1ca34476170cb02f00b7091bb2c0b05d95276836338d2577ad20f66"`
Oct 21 21:54:23.668 INFO kablam! usermod: no changes
Oct 21 21:54:23.728 INFO kablam! warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Oct 21 21:54:23.728 INFO kablam! disables Cargo from automatically inferring other binary targets.
Oct 21 21:54:23.728 INFO kablam! This inference behavior will change in the Rust 2018 edition and the following
Oct 21 21:54:23.728 INFO kablam! files will be included as a binary target:
Oct 21 21:54:23.728 INFO kablam! 
Oct 21 21:54:23.728 INFO kablam! * /source/src/main.rs
Oct 21 21:54:23.728 INFO kablam! 
Oct 21 21:54:23.728 INFO kablam! This is likely to break cargo build or cargo test as these files may not be
Oct 21 21:54:23.728 INFO kablam! ready to be compiled as a binary target today. You can future-proof yourself
Oct 21 21:54:23.728 INFO kablam! and disable this warning by adding `autobins = false` to your [package]
Oct 21 21:54:23.728 INFO kablam! section. You may also move the files to a location where Cargo would not
Oct 21 21:54:23.728 INFO kablam! automatically infer them to be a target, such as in subfolders.
Oct 21 21:54:23.728 INFO kablam! 
Oct 21 21:54:23.728 INFO kablam! For more information on this warning you can consult
Oct 21 21:54:23.728 INFO kablam! https://github.com/rust-lang/cargo/issues/5330
Oct 21 21:54:23.728 INFO kablam! warning: path `/source/src/main.rs` was erroneously implicitly accepted for binary `main`,
Oct 21 21:54:23.728 INFO kablam! please set bin.path in Cargo.toml
Oct 21 21:54:23.744 INFO kablam!     Checking learn v0.1.0 (/source)
Oct 21 21:54:26.408 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.408 INFO kablam!   --> src/bin/mthread.rs:11:9
Oct 21 21:54:26.409 INFO kablam!    |
Oct 21 21:54:26.409 INFO kablam! 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Oct 21 21:54:26.410 INFO kablam!    |         ----^^^
Oct 21 21:54:26.410 INFO kablam!    |         |
Oct 21 21:54:26.410 INFO kablam!    |         help: remove this `mut`
Oct 21 21:54:26.411 INFO kablam!    |
Oct 21 21:54:26.411 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 21:54:26.411 INFO kablam! 
Oct 21 21:54:26.411 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.412 INFO kablam!   --> src/bin/mthread.rs:27:13
Oct 21 21:54:26.412 INFO kablam!    |
Oct 21 21:54:26.412 INFO kablam! 27 |         let mut ptr = ptr.clone();
Oct 21 21:54:26.413 INFO kablam!    |             ----^^^
Oct 21 21:54:26.413 INFO kablam!    |             |
Oct 21 21:54:26.413 INFO kablam!    |             help: remove this `mut`
Oct 21 21:54:26.413 INFO kablam! 
Oct 21 21:54:26.414 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.414 INFO kablam!   --> src/bin/mthread.rs:29:13
Oct 21 21:54:26.414 INFO kablam!    |
Oct 21 21:54:26.414 INFO kablam! 29 |         let mut tx = tx.clone();
Oct 21 21:54:26.415 INFO kablam!    |             ----^^
Oct 21 21:54:26.415 INFO kablam!    |             |
Oct 21 21:54:26.415 INFO kablam!    |             help: remove this `mut`
Oct 21 21:54:26.416 INFO kablam! 
Oct 21 21:54:26.424 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 21:54:26.424 INFO kablam!   --> src/bin/mthread.rs:20:21
Oct 21 21:54:26.424 INFO kablam!    |
Oct 21 21:54:26.424 INFO kablam! 20 |                     a.send(1);
Oct 21 21:54:26.424 INFO kablam!    |                     ^^^^^^^^^^
Oct 21 21:54:26.424 INFO kablam!    |
Oct 21 21:54:26.424 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 21 21:54:26.424 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 21:54:26.424 INFO kablam! 
Oct 21 21:54:26.424 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 21:54:26.424 INFO kablam!   --> src/bin/mthread.rs:34:17
Oct 21 21:54:26.424 INFO kablam!    |
Oct 21 21:54:26.424 INFO kablam! 34 |                 tx.send(d);
Oct 21 21:54:26.424 INFO kablam!    |                 ^^^^^^^^^^^
Oct 21 21:54:26.424 INFO kablam!    |
Oct 21 21:54:26.424 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 21:54:26.424 INFO kablam! 
Oct 21 21:54:26.444 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.444 INFO kablam!   --> src/bin/mthread.rs:11:9
Oct 21 21:54:26.444 INFO kablam!    |
Oct 21 21:54:26.444 INFO kablam! 11 |     let mut ptr = Arc::new(Mutex::new("hello world!".chars()));
Oct 21 21:54:26.444 INFO kablam!    |         ----^^^
Oct 21 21:54:26.444 INFO kablam!    |         |
Oct 21 21:54:26.444 INFO kablam!    |         help: remove this `mut`
Oct 21 21:54:26.444 INFO kablam!    |
Oct 21 21:54:26.444 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 21:54:26.444 INFO kablam! 
Oct 21 21:54:26.444 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.444 INFO kablam!   --> src/bin/mthread.rs:27:13
Oct 21 21:54:26.444 INFO kablam!    |
Oct 21 21:54:26.444 INFO kablam! 27 |         let mut ptr = ptr.clone();
Oct 21 21:54:26.444 INFO kablam!    |             ----^^^
Oct 21 21:54:26.444 INFO kablam!    |             |
Oct 21 21:54:26.444 INFO kablam!    |             help: remove this `mut`
Oct 21 21:54:26.444 INFO kablam! 
Oct 21 21:54:26.444 INFO kablam! warning: variable does not need to be mutable
Oct 21 21:54:26.444 INFO kablam!   --> src/bin/mthread.rs:29:13
Oct 21 21:54:26.444 INFO kablam!    |
Oct 21 21:54:26.444 INFO kablam! 29 |         let mut tx = tx.clone();
Oct 21 21:54:26.444 INFO kablam!    |             ----^^
Oct 21 21:54:26.444 INFO kablam!    |             |
Oct 21 21:54:26.444 INFO kablam!    |             help: remove this `mut`
Oct 21 21:54:26.444 INFO kablam! 
Oct 21 21:54:26.452 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 21:54:26.452 INFO kablam!   --> src/bin/mthread.rs:20:21
Oct 21 21:54:26.452 INFO kablam!    |
Oct 21 21:54:26.452 INFO kablam! 20 |                     a.send(1);
Oct 21 21:54:26.452 INFO kablam!    |                     ^^^^^^^^^^
Oct 21 21:54:26.452 INFO kablam!    |
Oct 21 21:54:26.452 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 21 21:54:26.452 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 21:54:26.452 INFO kablam! 
Oct 21 21:54:26.452 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 21:54:26.452 INFO kablam!   --> src/bin/mthread.rs:34:17
Oct 21 21:54:26.452 INFO kablam!    |
Oct 21 21:54:26.452 INFO kablam! 34 |                 tx.send(d);
Oct 21 21:54:26.452 INFO kablam!    |                 ^^^^^^^^^^^
Oct 21 21:54:26.452 INFO kablam!    |
Oct 21 21:54:26.452 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 21:54:26.452 INFO kablam! 
Oct 21 21:54:26.517 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
Oct 21 21:54:26.541 INFO kablam! su: No module specific data is present
Oct 21 21:54:27.458 INFO running `"docker" "rm" "-f" "e9c8f77da1ca34476170cb02f00b7091bb2c0b05d95276836338d2577ad20f66"`
Oct 21 21:54:27.824 INFO blam! e9c8f77da1ca34476170cb02f00b7091bb2c0b05d95276836338d2577ad20f66