Sep 14 08:57:16.646 INFO checking slab_allocator-0.3.3 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 08:57:16.646 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 08:57:16.646 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-7/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 08:57:16.869 INFO blam! 76eb679d2c42e5c920711aa488401113780d82031be9781d9217e0eaa5f6a9d7
Sep 14 08:57:16.875 INFO running `"docker" "start" "-a" "76eb679d2c42e5c920711aa488401113780d82031be9781d9217e0eaa5f6a9d7"`
Sep 14 08:57:17.338 INFO kablam! usermod: no changes
Sep 14 08:57:17.387 INFO kablam!     Checking linked_list_allocator v0.6.3
Sep 14 08:57:17.539 INFO kablam!     Checking slab_allocator v0.3.3 (file:///source)
Sep 14 08:57:17.672 INFO kablam! warning: method is never used: `used_blocks`
Sep 14 08:57:17.672 INFO kablam!   --> src/slab.rs:18:5
Sep 14 08:57:17.672 INFO kablam!    |
Sep 14 08:57:17.672 INFO kablam! 18 |     pub fn used_blocks(&self) -> usize {
Sep 14 08:57:17.672 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.672 INFO kablam!    |
Sep 14 08:57:17.672 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 14 08:57:17.672 INFO kablam! 
Sep 14 08:57:17.672 INFO kablam! warning: method is never used: `len`
Sep 14 08:57:17.672 INFO kablam!   --> src/slab.rs:65:5
Sep 14 08:57:17.672 INFO kablam!    |
Sep 14 08:57:17.672 INFO kablam! 65 |     fn len(&self) -> usize {
Sep 14 08:57:17.672 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.672 INFO kablam! 
Sep 14 08:57:17.673 INFO kablam! warning: method is never used: `is_empty`
Sep 14 08:57:17.673 INFO kablam!   --> src/slab.rs:83:5
Sep 14 08:57:17.673 INFO kablam!    |
Sep 14 08:57:17.673 INFO kablam! 83 |     fn is_empty(&self) -> bool {
Sep 14 08:57:17.673 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.673 INFO kablam! 
Sep 14 08:57:17.673 INFO kablam! warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 14 08:57:17.673 INFO kablam!  --> src/lib.rs:2:12
Sep 14 08:57:17.673 INFO kablam!   |
Sep 14 08:57:17.673 INFO kablam! 2 | #![feature(attr_literals)]
Sep 14 08:57:17.673 INFO kablam!   |            ^^^^^^^^^^^^^
Sep 14 08:57:17.673 INFO kablam!   |
Sep 14 08:57:17.673 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 14 08:57:17.673 INFO kablam! 
Sep 14 08:57:17.674 INFO kablam! warning: the feature `pointer_methods` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 14 08:57:17.674 INFO kablam!  --> src/lib.rs:4:12
Sep 14 08:57:17.674 INFO kablam!   |
Sep 14 08:57:17.674 INFO kablam! 4 | #![feature(pointer_methods)]
Sep 14 08:57:17.674 INFO kablam!   |            ^^^^^^^^^^^^^^^
Sep 14 08:57:17.674 INFO kablam! 
Sep 14 08:57:17.885 INFO kablam! warning: method is never used: `used_blocks`
Sep 14 08:57:17.885 INFO kablam!   --> src/slab.rs:18:5
Sep 14 08:57:17.885 INFO kablam!    |
Sep 14 08:57:17.885 INFO kablam! 18 |     pub fn used_blocks(&self) -> usize {
Sep 14 08:57:17.885 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.885 INFO kablam!    |
Sep 14 08:57:17.885 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 14 08:57:17.885 INFO kablam! 
Sep 14 08:57:17.886 INFO kablam! warning: method is never used: `len`
Sep 14 08:57:17.886 INFO kablam!   --> src/slab.rs:65:5
Sep 14 08:57:17.886 INFO kablam!    |
Sep 14 08:57:17.886 INFO kablam! 65 |     fn len(&self) -> usize {
Sep 14 08:57:17.886 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.886 INFO kablam! 
Sep 14 08:57:17.886 INFO kablam! warning: method is never used: `is_empty`
Sep 14 08:57:17.886 INFO kablam!   --> src/slab.rs:83:5
Sep 14 08:57:17.886 INFO kablam!    |
Sep 14 08:57:17.886 INFO kablam! 83 |     fn is_empty(&self) -> bool {
Sep 14 08:57:17.886 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 08:57:17.886 INFO kablam! 
Sep 14 08:57:17.886 INFO kablam! warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 14 08:57:17.886 INFO kablam!  --> src/lib.rs:2:12
Sep 14 08:57:17.886 INFO kablam!   |
Sep 14 08:57:17.886 INFO kablam! 2 | #![feature(attr_literals)]
Sep 14 08:57:17.886 INFO kablam!   |            ^^^^^^^^^^^^^
Sep 14 08:57:17.886 INFO kablam!   |
Sep 14 08:57:17.886 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 14 08:57:17.886 INFO kablam! 
Sep 14 08:57:17.887 INFO kablam! warning: the feature `pointer_methods` has been stable since 1.26.0 and no longer requires an attribute to enable
Sep 14 08:57:17.887 INFO kablam!  --> src/lib.rs:4:12
Sep 14 08:57:17.887 INFO kablam!   |
Sep 14 08:57:17.887 INFO kablam! 4 | #![feature(pointer_methods)]
Sep 14 08:57:17.887 INFO kablam!   |            ^^^^^^^^^^^^^^^
Sep 14 08:57:17.887 INFO kablam! 
Sep 14 08:57:17.917 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Sep 14 08:57:17.919 INFO kablam! su: No module specific data is present
Sep 14 08:57:18.715 INFO running `"docker" "rm" "-f" "76eb679d2c42e5c920711aa488401113780d82031be9781d9217e0eaa5f6a9d7"`
Sep 14 08:57:18.843 INFO blam! 76eb679d2c42e5c920711aa488401113780d82031be9781d9217e0eaa5f6a9d7