Oct 12 13:50:52.558 INFO checking shoul/rust_tutorial against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 13:50:52.558 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 12 13:50:53.054 INFO blam! f57aa2c20fb392ff2c705330211cd748f613824beb96796e1284396efd81b83b
Oct 12 13:50:53.056 INFO running `"docker" "start" "-a" "f57aa2c20fb392ff2c705330211cd748f613824beb96796e1284396efd81b83b"`
Oct 12 13:50:54.501 INFO kablam! usermod: no changes
Oct 12 13:50:54.600 INFO kablam! warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Oct 12 13:50:54.600 INFO kablam! disables Cargo from automatically inferring other binary targets.
Oct 12 13:50:54.600 INFO kablam! This inference behavior will change in the Rust 2018 edition and the following
Oct 12 13:50:54.600 INFO kablam! files will be included as a binary target:
Oct 12 13:50:54.600 INFO kablam! 
Oct 12 13:50:54.600 INFO kablam! * /source/src/main.rs
Oct 12 13:50:54.600 INFO kablam! 
Oct 12 13:50:54.600 INFO kablam! This is likely to break cargo build or cargo test as these files may not be
Oct 12 13:50:54.600 INFO kablam! ready to be compiled as a binary target today. You can future-proof yourself
Oct 12 13:50:54.600 INFO kablam! and disable this warning by adding `autobins = false` to your [package]
Oct 12 13:50:54.600 INFO kablam! section. You may also move the files to a location where Cargo would not
Oct 12 13:50:54.600 INFO kablam! automatically infer them to be a target, such as in subfolders.
Oct 12 13:50:54.600 INFO kablam! 
Oct 12 13:50:54.600 INFO kablam! For more information on this warning you can consult
Oct 12 13:50:54.600 INFO kablam! https://github.com/rust-lang/cargo/issues/5330
Oct 12 13:50:54.616 INFO kablam!     Checking rust_tutorial v0.1.0 (/source)
Oct 12 13:50:56.064 INFO kablam! warning: unused variable: `v2`
Oct 12 13:50:56.065 INFO kablam!   --> src/ownership.rs:37:9
Oct 12 13:50:56.066 INFO kablam!    |
Oct 12 13:50:56.067 INFO kablam! 37 |     let v2 = v;
Oct 12 13:50:56.067 INFO kablam!    |         ^^ help: consider using `_v2` instead
Oct 12 13:50:56.076 INFO kablam!    |
Oct 12 13:50:56.077 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 13:50:56.078 INFO kablam! 
Oct 12 13:50:56.113 INFO kablam! warning: variable does not need to be mutable
Oct 12 13:50:56.113 INFO kablam!   --> src/ownership.rs:60:9
Oct 12 13:50:56.113 INFO kablam!    |
Oct 12 13:50:56.113 INFO kablam! 60 |     let mut b = a;
Oct 12 13:50:56.113 INFO kablam!    |         ----^
Oct 12 13:50:56.113 INFO kablam!    |         |
Oct 12 13:50:56.113 INFO kablam!    |         help: remove this `mut`
Oct 12 13:50:56.115 INFO kablam!    |
Oct 12 13:50:56.115 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 13:50:56.116 INFO kablam! 
Oct 12 13:50:56.214 INFO kablam! warning: unused variable: `j`
Oct 12 13:50:56.214 INFO kablam!   --> src/vectors.rs:34:6
Oct 12 13:50:56.214 INFO kablam!    |
Oct 12 13:50:56.214 INFO kablam! 34 |     let j: i32 = 0;
Oct 12 13:50:56.214 INFO kablam!    |         ^ help: consider using `_j` instead
Oct 12 13:50:56.256 INFO kablam!    |
Oct 12 13:50:56.257 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 13:50:56.258 INFO kablam! 
Oct 12 13:50:56.516 INFO kablam! warning: unused variable: `j`
Oct 12 13:50:56.516 INFO kablam!   --> src/vectors.rs:34:6
Oct 12 13:50:56.516 INFO kablam!    |
Oct 12 13:50:56.516 INFO kablam! 34 |     let j: i32 = 0;
Oct 12 13:50:56.516 INFO kablam!    |         ^ help: consider using `_j` instead
Oct 12 13:50:56.516 INFO kablam!    |
Oct 12 13:50:56.516 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 13:50:56.516 INFO kablam! 
Oct 12 13:50:57.000 INFO kablam! warning: unused variable: `v2`
Oct 12 13:50:57.001 INFO kablam!   --> src/ownership.rs:37:9
Oct 12 13:50:57.002 INFO kablam!    |
Oct 12 13:50:57.003 INFO kablam! 37 |     let v2 = v;
Oct 12 13:50:57.003 INFO kablam!    |         ^^ help: consider using `_v2` instead
Oct 12 13:50:57.004 INFO kablam!    |
Oct 12 13:50:57.005 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 13:50:57.005 INFO kablam! 
Oct 12 13:50:57.016 INFO kablam! warning: variable does not need to be mutable
Oct 12 13:50:57.017 INFO kablam!   --> src/ownership.rs:60:9
Oct 12 13:50:57.018 INFO kablam!    |
Oct 12 13:50:57.018 INFO kablam! 60 |     let mut b = a;
Oct 12 13:50:57.019 INFO kablam!    |         ----^
Oct 12 13:50:57.020 INFO kablam!    |         |
Oct 12 13:50:57.020 INFO kablam!    |         help: remove this `mut`
Oct 12 13:50:57.021 INFO kablam!    |
Oct 12 13:50:57.022 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 13:50:57.022 INFO kablam! 
Oct 12 13:50:57.052 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.51s
Oct 12 13:50:57.056 INFO kablam! su: No module specific data is present
Oct 12 13:50:58.234 INFO running `"docker" "rm" "-f" "f57aa2c20fb392ff2c705330211cd748f613824beb96796e1284396efd81b83b"`
Oct 12 13:50:58.520 INFO blam! f57aa2c20fb392ff2c705330211cd748f613824beb96796e1284396efd81b83b