Oct 13 01:32:12.313 INFO checking akuraj/learn_rust against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 01:32:12.313 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/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 13 01:32:12.875 INFO blam! a913ee9afb61344827c333daf13e3264459ee18113f05c11f96039239aa4cd1a
Oct 13 01:32:12.875 INFO running `"docker" "start" "-a" "a913ee9afb61344827c333daf13e3264459ee18113f05c11f96039239aa4cd1a"`
Oct 13 01:32:14.343 INFO kablam! usermod: no changes
Oct 13 01:32:14.396 INFO kablam!     Checking learn_rust v0.1.0 (/source)
Oct 13 01:32:15.500 INFO kablam! warning: unused variable: `x`
Oct 13 01:32:15.500 INFO kablam!  --> src/test_lifetimes.rs:1:34
Oct 13 01:32:15.500 INFO kablam!   |
Oct 13 01:32:15.500 INFO kablam! 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Oct 13 01:32:15.500 INFO kablam!   |                                  ^ help: consider using `_x` instead
Oct 13 01:32:15.500 INFO kablam!   |
Oct 13 01:32:15.500 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 13 01:32:15.500 INFO kablam! 
Oct 13 01:32:15.501 INFO kablam! warning: unused variable: `z`
Oct 13 01:32:15.501 INFO kablam!  --> src/test_lifetimes.rs:1:58
Oct 13 01:32:15.501 INFO kablam!   |
Oct 13 01:32:15.501 INFO kablam! 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Oct 13 01:32:15.501 INFO kablam!   |                                                          ^ help: consider using `_z` instead
Oct 13 01:32:15.501 INFO kablam! 
Oct 13 01:32:15.501 INFO kablam! warning: variable `a` is assigned to, but never used
Oct 13 01:32:15.501 INFO kablam!  --> src/test_lifetimes.rs:9:9
Oct 13 01:32:15.501 INFO kablam!   |
Oct 13 01:32:15.501 INFO kablam! 9 |     let a: &u32;
Oct 13 01:32:15.501 INFO kablam!   |         ^
Oct 13 01:32:15.501 INFO kablam!   |
Oct 13 01:32:15.501 INFO kablam!   = note: consider using `_a` instead
Oct 13 01:32:15.501 INFO kablam! 
Oct 13 01:32:15.501 INFO kablam! warning: value assigned to `a` is never read
Oct 13 01:32:15.501 INFO kablam!   --> src/test_lifetimes.rs:15:9
Oct 13 01:32:15.501 INFO kablam!    |
Oct 13 01:32:15.501 INFO kablam! 15 |         a = {
Oct 13 01:32:15.501 INFO kablam!    |         ^
Oct 13 01:32:15.501 INFO kablam!    |
Oct 13 01:32:15.501 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 13 01:32:15.501 INFO kablam! 
Oct 13 01:32:15.581 INFO kablam! warning: unused variable: `x`
Oct 13 01:32:15.581 INFO kablam!  --> src/test_lifetimes.rs:1:34
Oct 13 01:32:15.581 INFO kablam!   |
Oct 13 01:32:15.582 INFO kablam! 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Oct 13 01:32:15.582 INFO kablam!   |                                  ^ help: consider using `_x` instead
Oct 13 01:32:15.582 INFO kablam!   |
Oct 13 01:32:15.582 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 13 01:32:15.582 INFO kablam! 
Oct 13 01:32:15.582 INFO kablam! warning: unused variable: `z`
Oct 13 01:32:15.582 INFO kablam!  --> src/test_lifetimes.rs:1:58
Oct 13 01:32:15.582 INFO kablam!   |
Oct 13 01:32:15.582 INFO kablam! 1 | pub fn foo< 'c, 'b, 'a/*: 'b*/>( x: &'a u32, y: &'b u32, z: &'c u32 ) -> &'b u32 {
Oct 13 01:32:15.582 INFO kablam!   |                                                          ^ help: consider using `_z` instead
Oct 13 01:32:15.582 INFO kablam! 
Oct 13 01:32:15.582 INFO kablam! warning: variable `a` is assigned to, but never used
Oct 13 01:32:15.582 INFO kablam!  --> src/test_lifetimes.rs:9:9
Oct 13 01:32:15.582 INFO kablam!   |
Oct 13 01:32:15.582 INFO kablam! 9 |     let a: &u32;
Oct 13 01:32:15.582 INFO kablam!   |         ^
Oct 13 01:32:15.582 INFO kablam!   |
Oct 13 01:32:15.583 INFO kablam!   = note: consider using `_a` instead
Oct 13 01:32:15.583 INFO kablam! 
Oct 13 01:32:15.583 INFO kablam! warning: value assigned to `a` is never read
Oct 13 01:32:15.583 INFO kablam!   --> src/test_lifetimes.rs:15:9
Oct 13 01:32:15.583 INFO kablam!    |
Oct 13 01:32:15.583 INFO kablam! 15 |         a = {
Oct 13 01:32:15.583 INFO kablam!    |         ^
Oct 13 01:32:15.583 INFO kablam!    |
Oct 13 01:32:15.583 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 13 01:32:15.583 INFO kablam! 
Oct 13 01:32:15.628 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Oct 13 01:32:15.644 INFO kablam! su: No module specific data is present
Oct 13 01:32:17.029 INFO running `"docker" "rm" "-f" "a913ee9afb61344827c333daf13e3264459ee18113f05c11f96039239aa4cd1a"`
Oct 13 01:32:17.308 INFO blam! a913ee9afb61344827c333daf13e3264459ee18113f05c11f96039239aa4cd1a