Oct 12 14:08:30.591 INFO checking seb-odessa/btree against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 14:08:30.591 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 14:08:30.820 INFO blam! 5836579a6912e55dcb7517a4e960cff1d2409b3ab8d5a30aabbb6fe40f40b953
Oct 12 14:08:30.824 INFO running `"docker" "start" "-a" "5836579a6912e55dcb7517a4e960cff1d2409b3ab8d5a30aabbb6fe40f40b953"`
Oct 12 14:08:31.472 INFO kablam! usermod: no changes
Oct 12 14:08:31.521 INFO kablam!     Checking BTree v0.1.0 (/source)
Oct 12 14:08:31.718 INFO kablam! warning: unused import: `Formatter`
Oct 12 14:08:31.718 INFO kablam!  --> src/main.rs:1:25
Oct 12 14:08:31.718 INFO kablam!   |
Oct 12 14:08:31.718 INFO kablam! 1 | use std::fmt::{Display, Formatter};
Oct 12 14:08:31.718 INFO kablam!   |                         ^^^^^^^^^
Oct 12 14:08:31.718 INFO kablam!   |
Oct 12 14:08:31.718 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 14:08:31.718 INFO kablam! 
Oct 12 14:08:31.720 INFO kablam! warning: unused import: `Formatter`
Oct 12 14:08:31.720 INFO kablam!  --> src/main.rs:1:25
Oct 12 14:08:31.720 INFO kablam!   |
Oct 12 14:08:31.720 INFO kablam! 1 | use std::fmt::{Display, Formatter};
Oct 12 14:08:31.720 INFO kablam!   |                         ^^^^^^^^^
Oct 12 14:08:31.720 INFO kablam!   |
Oct 12 14:08:31.720 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 14:08:31.720 INFO kablam! 
Oct 12 14:08:31.788 INFO kablam! warning: variable does not need to be mutable
Oct 12 14:08:31.788 INFO kablam!    --> src/main.rs:149:14
Oct 12 14:08:31.788 INFO kablam!     |
Oct 12 14:08:31.788 INFO kablam! 149 |         Some(mut node) => node.update("Z".to_string()),
Oct 12 14:08:31.788 INFO kablam!     |              ----^^^^
Oct 12 14:08:31.788 INFO kablam!     |              |
Oct 12 14:08:31.788 INFO kablam!     |              help: remove this `mut`
Oct 12 14:08:31.788 INFO kablam!     |
Oct 12 14:08:31.788 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 14:08:31.788 INFO kablam! 
Oct 12 14:08:31.788 INFO kablam! warning: crate `BTree` should have a snake case name such as `btree`
Oct 12 14:08:31.788 INFO kablam!   |
Oct 12 14:08:31.788 INFO kablam!   = note: #[warn(non_snake_case)] on by default
Oct 12 14:08:31.788 INFO kablam! 
Oct 12 14:08:31.799 INFO kablam! warning: variable does not need to be mutable
Oct 12 14:08:31.799 INFO kablam!    --> src/main.rs:149:14
Oct 12 14:08:31.799 INFO kablam!     |
Oct 12 14:08:31.799 INFO kablam! 149 |         Some(mut node) => node.update("Z".to_string()),
Oct 12 14:08:31.799 INFO kablam!     |              ----^^^^
Oct 12 14:08:31.799 INFO kablam!     |              |
Oct 12 14:08:31.799 INFO kablam!     |              help: remove this `mut`
Oct 12 14:08:31.799 INFO kablam!     |
Oct 12 14:08:31.799 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 14:08:31.799 INFO kablam! 
Oct 12 14:08:31.799 INFO kablam! warning: crate `BTree` should have a snake case name such as `btree`
Oct 12 14:08:31.799 INFO kablam!   |
Oct 12 14:08:31.799 INFO kablam!   = note: #[warn(non_snake_case)] on by default
Oct 12 14:08:31.799 INFO kablam! 
Oct 12 14:08:31.825 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
Oct 12 14:08:31.826 INFO kablam! su: No module specific data is present
Oct 12 14:08:32.204 INFO running `"docker" "rm" "-f" "5836579a6912e55dcb7517a4e960cff1d2409b3ab8d5a30aabbb6fe40f40b953"`
Oct 12 14:08:32.280 INFO blam! 5836579a6912e55dcb7517a4e960cff1d2409b3ab8d5a30aabbb6fe40f40b953