Dec 04 22:23:16.694 INFO checking arthurprs/burst-trie against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 22:23:16.695 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 22:23:17.210 INFO [stdout] 54b810b7ffc0429b438393113c30a8656e0bac5fde40eb57d3f25674644463de
Dec 04 22:23:17.212 INFO running `"docker" "start" "-a" "54b810b7ffc0429b438393113c30a8656e0bac5fde40eb57d3f25674644463de"`
Dec 04 22:23:18.447 INFO [stderr] usermod: no changes
Dec 04 22:23:18.523 INFO [stderr]     Checking burst_trie v0.0.1 (/source)
Dec 04 22:23:19.051 INFO [stderr] warning: unused import: `std::fmt`
Dec 04 22:23:19.051 INFO [stderr]   --> src/map.rs:19:5
Dec 04 22:23:19.051 INFO [stderr]    |
Dec 04 22:23:19.051 INFO [stderr] 19 | use std::fmt;
Dec 04 22:23:19.051 INFO [stderr]    |     ^^^^^^^^
Dec 04 22:23:19.051 INFO [stderr]    |
Dec 04 22:23:19.051 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 22:23:19.052 INFO [stderr] 
Dec 04 22:23:19.339 INFO [stderr] warning: unused macro definition
Dec 04 22:23:19.339 INFO [stderr]    --> src/bench_macros.rs:130:1
Dec 04 22:23:19.340 INFO [stderr]     |
Dec 04 22:23:19.340 INFO [stderr] 130 | / macro_rules! map_iter_bench {
Dec 04 22:23:19.340 INFO [stderr] 131 | |     ($name: ident, $min_len: expr, $max_len: expr, $map_len: expr, $map_type: ident, $key_prefix: expr) => (
Dec 04 22:23:19.340 INFO [stderr] 132 | |         #[bench]
Dec 04 22:23:19.340 INFO [stderr] 133 | |         fn $name(b: &mut test::Bencher) {
Dec 04 22:23:19.340 INFO [stderr] ...   |
Dec 04 22:23:19.340 INFO [stderr] 156 | |     );
Dec 04 22:23:19.340 INFO [stderr] 157 | | }
Dec 04 22:23:19.340 INFO [stderr]     | |_^
Dec 04 22:23:19.340 INFO [stderr]     |
Dec 04 22:23:19.340 INFO [stderr]     = note: #[warn(unused_macros)] on by default
Dec 04 22:23:19.340 INFO [stderr] 
Dec 04 22:23:19.340 INFO [stderr] warning: unused macro definition
Dec 04 22:23:19.340 INFO [stderr]    --> src/bench_macros.rs:159:1
Dec 04 22:23:19.340 INFO [stderr]     |
Dec 04 22:23:19.340 INFO [stderr] 159 | / macro_rules! map_range_bench {
Dec 04 22:23:19.340 INFO [stderr] 160 | |     ($name: ident, $min_len: expr, $max_len: expr, $map_len: expr, $map_type: ident, $key_prefix: expr) => (
Dec 04 22:23:19.340 INFO [stderr] 161 | |         #[bench]
Dec 04 22:23:19.340 INFO [stderr] 162 | |         fn $name(b: &mut test::Bencher) {
Dec 04 22:23:19.340 INFO [stderr] ...   |
Dec 04 22:23:19.340 INFO [stderr] 191 | |     );
Dec 04 22:23:19.340 INFO [stderr] 192 | | }
Dec 04 22:23:19.340 INFO [stderr]     | |_^
Dec 04 22:23:19.340 INFO [stderr] 
Dec 04 22:23:19.340 INFO [stderr] warning: unused import: `std::fmt`
Dec 04 22:23:19.340 INFO [stderr]   --> src/map.rs:19:5
Dec 04 22:23:19.341 INFO [stderr]    |
Dec 04 22:23:19.341 INFO [stderr] 19 | use std::fmt;
Dec 04 22:23:19.341 INFO [stderr]    |     ^^^^^^^^
Dec 04 22:23:19.341 INFO [stderr]    |
Dec 04 22:23:19.341 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 22:23:19.341 INFO [stderr] 
Dec 04 22:23:19.347 INFO [stderr] warning: unused import: `BurstTrieNode`
Dec 04 22:23:19.347 INFO [stderr]     --> src/map.rs:1159:31
Dec 04 22:23:19.347 INFO [stderr]      |
Dec 04 22:23:19.348 INFO [stderr] 1159 |     use super::{BurstTrieMap, BurstTrieNode};
Dec 04 22:23:19.348 INFO [stderr]      |                               ^^^^^^^^^^^^^
Dec 04 22:23:19.348 INFO [stderr] 
Dec 04 22:23:19.348 INFO [stderr] warning: unused import: `std::collections::Bound`
Dec 04 22:23:19.348 INFO [stderr]     --> src/map.rs:1160:9
Dec 04 22:23:19.348 INFO [stderr]      |
Dec 04 22:23:19.348 INFO [stderr] 1160 |     use std::collections::Bound;
Dec 04 22:23:19.348 INFO [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 22:23:19.348 INFO [stderr] 
Dec 04 22:23:20.318 INFO [stderr] warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Dec 04 22:23:20.318 INFO [stderr]  --> src/lib.rs:3:27
Dec 04 22:23:20.318 INFO [stderr]   |
Dec 04 22:23:20.318 INFO [stderr] 3 | #![cfg_attr(test, feature(collections_bound))]
Dec 04 22:23:20.318 INFO [stderr]   |                           ^^^^^^^^^^^^^^^^^
Dec 04 22:23:20.318 INFO [stderr]   |
Dec 04 22:23:20.318 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 22:23:20.318 INFO [stderr] 
Dec 04 22:23:20.318 INFO [stderr] warning: the feature `btree_range` has been stable since 1.17.0 and no longer requires an attribute to enable
Dec 04 22:23:20.318 INFO [stderr]  --> src/lib.rs:4:27
Dec 04 22:23:20.318 INFO [stderr]   |
Dec 04 22:23:20.319 INFO [stderr] 4 | #![cfg_attr(test, feature(btree_range))]
Dec 04 22:23:20.319 INFO [stderr]   |                           ^^^^^^^^^^^
Dec 04 22:23:20.319 INFO [stderr] 
Dec 04 22:23:20.434 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
Dec 04 22:23:20.434 INFO [stderr] su: No module specific data is present
Dec 04 22:23:21.016 INFO running `"docker" "inspect" "54b810b7ffc0429b438393113c30a8656e0bac5fde40eb57d3f25674644463de"`
Dec 04 22:23:21.299 INFO running `"docker" "rm" "-f" "54b810b7ffc0429b438393113c30a8656e0bac5fde40eb57d3f25674644463de"`
Dec 04 22:23:21.469 INFO [stdout] 54b810b7ffc0429b438393113c30a8656e0bac5fde40eb57d3f25674644463de