Dec 05 16:23:18.742 INFO checking balloon-0.0.1 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 16:23:18.742 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 05 16:23:19.161 INFO [stdout] 8db4dd3717537617dafb89e642203a59c37ba92d5427dc6b7d7beb55c2120e3f
Dec 05 16:23:19.167 INFO running `"docker" "start" "-a" "8db4dd3717537617dafb89e642203a59c37ba92d5427dc6b7d7beb55c2120e3f"`
Dec 05 16:23:19.824 INFO [stderr] usermod: no changes
Dec 05 16:23:19.876 INFO [stderr]     Checking subtle v0.7.1
Dec 05 16:23:20.335 INFO [stderr]     Checking balloon v0.0.1 (/source)
Dec 05 16:23:21.968 INFO [stderr] warning: method is never used: `get`
Dec 05 16:23:21.968 INFO [stderr]   --> src/buffer.rs:51:5
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr] 51 |     pub fn get(&self, index: usize) -> Option<&T> { self.back.get(index) }
Dec 05 16:23:21.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 16:23:21.968 INFO [stderr] 
Dec 05 16:23:21.968 INFO [stderr] warning: method is never used: `get_mut`
Dec 05 16:23:21.968 INFO [stderr]   --> src/buffer.rs:54:5
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr] 54 |     pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { self.back.get_mut(index) }
Dec 05 16:23:21.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:21.968 INFO [stderr] 
Dec 05 16:23:21.968 INFO [stderr] warning: method is never used: `clear`
Dec 05 16:23:21.968 INFO [stderr]   --> src/buffer.rs:57:5
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr] 57 |     pub fn clear(&mut self) { self.back.clear() }
Dec 05 16:23:21.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:21.968 INFO [stderr] 
Dec 05 16:23:21.968 INFO [stderr] warning: method is never used: `is_empty`
Dec 05 16:23:21.968 INFO [stderr]   --> src/buffer.rs:58:5
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr] 58 |     pub fn is_empty(&self) -> bool { self.back.is_empty() }
Dec 05 16:23:21.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:21.968 INFO [stderr] 
Dec 05 16:23:21.968 INFO [stderr] warning: method is never used: `len`
Dec 05 16:23:21.968 INFO [stderr]   --> src/buffer.rs:59:5
Dec 05 16:23:21.968 INFO [stderr]    |
Dec 05 16:23:21.968 INFO [stderr] 59 |     pub fn len(&self) -> usize { self.back.len() }
Dec 05 16:23:21.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:21.968 INFO [stderr] 
Dec 05 16:23:22.151 INFO [stderr] warning: method is never used: `get`
Dec 05 16:23:22.151 INFO [stderr]   --> src/buffer.rs:51:5
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr] 51 |     pub fn get(&self, index: usize) -> Option<&T> { self.back.get(index) }
Dec 05 16:23:22.151 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 16:23:22.151 INFO [stderr] 
Dec 05 16:23:22.151 INFO [stderr] warning: method is never used: `get_mut`
Dec 05 16:23:22.151 INFO [stderr]   --> src/buffer.rs:54:5
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr] 54 |     pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { self.back.get_mut(index) }
Dec 05 16:23:22.151 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:22.151 INFO [stderr] 
Dec 05 16:23:22.151 INFO [stderr] warning: method is never used: `clear`
Dec 05 16:23:22.151 INFO [stderr]   --> src/buffer.rs:57:5
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr] 57 |     pub fn clear(&mut self) { self.back.clear() }
Dec 05 16:23:22.151 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:22.151 INFO [stderr] 
Dec 05 16:23:22.151 INFO [stderr] warning: method is never used: `is_empty`
Dec 05 16:23:22.151 INFO [stderr]   --> src/buffer.rs:58:5
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr] 58 |     pub fn is_empty(&self) -> bool { self.back.is_empty() }
Dec 05 16:23:22.151 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:22.151 INFO [stderr] 
Dec 05 16:23:22.151 INFO [stderr] warning: method is never used: `len`
Dec 05 16:23:22.151 INFO [stderr]   --> src/buffer.rs:59:5
Dec 05 16:23:22.151 INFO [stderr]    |
Dec 05 16:23:22.151 INFO [stderr] 59 |     pub fn len(&self) -> usize { self.back.len() }
Dec 05 16:23:22.151 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 16:23:22.151 INFO [stderr] 
Dec 05 16:23:22.191 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
Dec 05 16:23:22.200 INFO [stderr] su: No module specific data is present
Dec 05 16:23:22.971 INFO running `"docker" "inspect" "8db4dd3717537617dafb89e642203a59c37ba92d5427dc6b7d7beb55c2120e3f"`
Dec 05 16:23:23.243 INFO running `"docker" "rm" "-f" "8db4dd3717537617dafb89e642203a59c37ba92d5427dc6b7d7beb55c2120e3f"`
Dec 05 16:23:23.527 INFO [stdout] 8db4dd3717537617dafb89e642203a59c37ba92d5427dc6b7d7beb55c2120e3f