Nov 29 18:36:35.417 INFO checking seb-odessa/btree against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 29 18:36:35.417 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-3/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 29 18:36:35.900 INFO [stdout] c6015150ee30de1a40860fc620cd7e64a61bc00c37048fadddd690cb1540227c
Nov 29 18:36:35.906 INFO running `"docker" "start" "-a" "c6015150ee30de1a40860fc620cd7e64a61bc00c37048fadddd690cb1540227c"`
Nov 29 18:36:37.032 INFO [stderr] usermod: no changes
Nov 29 18:36:37.100 INFO [stderr]     Checking BTree v0.1.0 (/source)
Nov 29 18:36:37.256 INFO [stderr] warning: unused import: `Formatter`
Nov 29 18:36:37.256 INFO [stderr]  --> src/main.rs:1:25
Nov 29 18:36:37.256 INFO [stderr]   |
Nov 29 18:36:37.256 INFO [stderr] 1 | use std::fmt::{Display, Formatter};
Nov 29 18:36:37.256 INFO [stderr]   |                         ^^^^^^^^^
Nov 29 18:36:37.256 INFO [stderr]   |
Nov 29 18:36:37.256 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 29 18:36:37.256 INFO [stderr] 
Nov 29 18:36:37.318 INFO [stderr] warning: variable does not need to be mutable
Nov 29 18:36:37.318 INFO [stderr]    --> src/main.rs:149:14
Nov 29 18:36:37.318 INFO [stderr]     |
Nov 29 18:36:37.318 INFO [stderr] 149 |         Some(mut node) => node.update("Z".to_string()),
Nov 29 18:36:37.318 INFO [stderr]     |              ----^^^^
Nov 29 18:36:37.318 INFO [stderr]     |              |
Nov 29 18:36:37.318 INFO [stderr]     |              help: remove this `mut`
Nov 29 18:36:37.318 INFO [stderr]     |
Nov 29 18:36:37.318 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 29 18:36:37.318 INFO [stderr] 
Nov 29 18:36:37.318 INFO [stderr] warning: crate `BTree` should have a snake case name such as `btree`
Nov 29 18:36:37.319 INFO [stderr]   |
Nov 29 18:36:37.319 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 29 18:36:37.319 INFO [stderr] 
Nov 29 18:36:37.464 INFO [stderr] warning: unused import: `Formatter`
Nov 29 18:36:37.464 INFO [stderr]  --> src/main.rs:1:25
Nov 29 18:36:37.464 INFO [stderr]   |
Nov 29 18:36:37.464 INFO [stderr] 1 | use std::fmt::{Display, Formatter};
Nov 29 18:36:37.464 INFO [stderr]   |                         ^^^^^^^^^
Nov 29 18:36:37.464 INFO [stderr]   |
Nov 29 18:36:37.464 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 29 18:36:37.465 INFO [stderr] 
Nov 29 18:36:37.532 INFO [stderr] warning: variable does not need to be mutable
Nov 29 18:36:37.532 INFO [stderr]    --> src/main.rs:149:14
Nov 29 18:36:37.532 INFO [stderr]     |
Nov 29 18:36:37.532 INFO [stderr] 149 |         Some(mut node) => node.update("Z".to_string()),
Nov 29 18:36:37.532 INFO [stderr]     |              ----^^^^
Nov 29 18:36:37.532 INFO [stderr]     |              |
Nov 29 18:36:37.532 INFO [stderr]     |              help: remove this `mut`
Nov 29 18:36:37.532 INFO [stderr]     |
Nov 29 18:36:37.532 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 29 18:36:37.532 INFO [stderr] 
Nov 29 18:36:37.532 INFO [stderr] warning: crate `BTree` should have a snake case name such as `btree`
Nov 29 18:36:37.532 INFO [stderr]   |
Nov 29 18:36:37.532 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 29 18:36:37.532 INFO [stderr] 
Nov 29 18:36:37.572 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
Nov 29 18:36:37.577 INFO [stderr] su: No module specific data is present
Nov 29 18:36:38.024 INFO running `"docker" "inspect" "c6015150ee30de1a40860fc620cd7e64a61bc00c37048fadddd690cb1540227c"`
Nov 29 18:36:38.288 INFO running `"docker" "rm" "-f" "c6015150ee30de1a40860fc620cd7e64a61bc00c37048fadddd690cb1540227c"`
Nov 29 18:36:38.500 INFO [stdout] c6015150ee30de1a40860fc620cd7e64a61bc00c37048fadddd690cb1540227c