Dec 12 06:59:33.073 INFO checking stacktools-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 06:59:33.073 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 06:59:33.534 INFO [stdout] d2d3ffcef28fae3533cc4e8e4ed50c984ede13571d809f5085d68182128dcbb1
Dec 12 06:59:33.536 INFO running `"docker" "start" "-a" "d2d3ffcef28fae3533cc4e8e4ed50c984ede13571d809f5085d68182128dcbb1"`
Dec 12 06:59:35.123 INFO [stderr] usermod: no changes
Dec 12 06:59:35.176 INFO [stderr]     Checking stacktools v0.1.0 (/source)
Dec 12 06:59:36.056 INFO [stderr] warning: method is never used: `len`
Dec 12 06:59:36.056 INFO [stderr]   --> src/lib.rs:25:5
Dec 12 06:59:36.056 INFO [stderr]    |
Dec 12 06:59:36.056 INFO [stderr] 25 |     fn len(&self) -> usize {
Dec 12 06:59:36.056 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.056 INFO [stderr]    |
Dec 12 06:59:36.056 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 06:59:36.056 INFO [stderr] 
Dec 12 06:59:36.056 INFO [stderr] warning: method is never used: `push`
Dec 12 06:59:36.056 INFO [stderr]   --> src/lib.rs:29:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 29 |     fn push(&mut self, v: T) {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `iter`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:33:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 33 |     fn iter(&self) -> vec_deque::Iter<T> {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `len`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:45:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 45 |     fn len(&self) -> usize {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `push`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:49:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 49 |     fn push(&mut self, v: T) {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `iter`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:53:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 53 |     fn iter(&self) -> vec_deque::Iter<T> {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `len`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:86:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 86 |     fn len(&self) -> usize {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `push`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:90:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 90 |     fn push(&mut self, v: T) {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.057 INFO [stderr] warning: method is never used: `iter`
Dec 12 06:59:36.057 INFO [stderr]   --> src/lib.rs:94:5
Dec 12 06:59:36.057 INFO [stderr]    |
Dec 12 06:59:36.057 INFO [stderr] 94 |     fn iter(&self) -> binary_heap::Iter<T> {
Dec 12 06:59:36.057 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 06:59:36.057 INFO [stderr] 
Dec 12 06:59:36.408 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Dec 12 06:59:36.418 INFO [stderr] su: No module specific data is present
Dec 12 06:59:37.118 INFO running `"docker" "inspect" "d2d3ffcef28fae3533cc4e8e4ed50c984ede13571d809f5085d68182128dcbb1"`
Dec 12 06:59:37.406 INFO running `"docker" "rm" "-f" "d2d3ffcef28fae3533cc4e8e4ed50c984ede13571d809f5085d68182128dcbb1"`
Dec 12 06:59:37.744 INFO [stdout] d2d3ffcef28fae3533cc4e8e4ed50c984ede13571d809f5085d68182128dcbb1