Dec 11 10:37:32.333 INFO checking ruggeri/nedbase against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 10:37:32.333 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 10:37:32.532 INFO [stdout] 67a4a9ad9cecaf1ebffe89c653755bdec9fc9f4031039bfe4de71f2487230cce
Dec 11 10:37:32.533 INFO running `"docker" "start" "-a" "67a4a9ad9cecaf1ebffe89c653755bdec9fc9f4031039bfe4de71f2487230cce"`
Dec 11 10:37:33.051 INFO [stderr] usermod: no changes
Dec 11 10:37:33.182 INFO [stderr]    Compiling syn v0.15.22
Dec 11 10:37:47.942 INFO [stderr]    Compiling rental-impl v0.5.2
Dec 11 10:38:03.967 INFO [stderr]     Checking rental v0.5.2
Dec 11 10:38:05.492 INFO [stderr]     Checking nedbase v0.1.0 (/source)
Dec 11 10:38:06.928 INFO [stderr] warning: method is never used: `len`
Dec 11 10:38:06.928 INFO [stderr]   --> src/locking/reading/read_guard_path.rs:23:3
Dec 11 10:38:06.928 INFO [stderr]    |
Dec 11 10:38:06.928 INFO [stderr] 23 |   pub fn len(&self) -> usize {
Dec 11 10:38:06.928 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 10:38:06.928 INFO [stderr]    |
Dec 11 10:38:06.928 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 10:38:06.928 INFO [stderr] 
Dec 11 10:38:06.928 INFO [stderr] warning: method is never used: `peek_head_lock`
Dec 11 10:38:06.928 INFO [stderr]   --> src/locking/reading/read_guard_path.rs:31:3
Dec 11 10:38:06.928 INFO [stderr]    |
Dec 11 10:38:06.928 INFO [stderr] 31 |   pub fn peek_head_lock(&self, msg: &'static str) -> &ReadGuard {
Dec 11 10:38:06.928 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 10:38:06.928 INFO [stderr] 
Dec 11 10:38:06.990 INFO [stderr] warning: method is never used: `len`
Dec 11 10:38:06.992 INFO [stderr]   --> src/locking/reading/read_guard_path.rs:23:3
Dec 11 10:38:06.992 INFO [stderr]    |
Dec 11 10:38:06.992 INFO [stderr] 23 |   pub fn len(&self) -> usize {
Dec 11 10:38:06.992 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 10:38:06.992 INFO [stderr]    |
Dec 11 10:38:06.992 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 10:38:06.992 INFO [stderr] 
Dec 11 10:38:06.992 INFO [stderr] warning: method is never used: `peek_head_lock`
Dec 11 10:38:06.992 INFO [stderr]   --> src/locking/reading/read_guard_path.rs:31:3
Dec 11 10:38:06.992 INFO [stderr]    |
Dec 11 10:38:06.992 INFO [stderr] 31 |   pub fn peek_head_lock(&self, msg: &'static str) -> &ReadGuard {
Dec 11 10:38:06.992 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 10:38:06.992 INFO [stderr] 
Dec 11 10:38:07.874 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.80s
Dec 11 10:38:07.883 INFO [stderr] su: No module specific data is present
Dec 11 10:38:08.668 INFO running `"docker" "inspect" "67a4a9ad9cecaf1ebffe89c653755bdec9fc9f4031039bfe4de71f2487230cce"`
Dec 11 10:38:08.932 INFO running `"docker" "rm" "-f" "67a4a9ad9cecaf1ebffe89c653755bdec9fc9f4031039bfe4de71f2487230cce"`
Dec 11 10:38:09.203 INFO [stdout] 67a4a9ad9cecaf1ebffe89c653755bdec9fc9f4031039bfe4de71f2487230cce