Aug 01 19:19:25.401 INFO checking vertree-0.2.2 against 1.27.2+tmplazy for lazy_static-1
Aug 01 19:19:25.401 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:19:25.401 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:19:25.401 INFO running `"docker" "create" "-v" "/tmp/crater.EgGnxvlT14aN:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 19:19:25.647 INFO blam! 61f5f5d0a9f42c6c1d721614b010d116fd260fc13512d4ff7d5fd25bf9b4a8df
Aug 01 19:19:25.649 INFO running `"docker" "start" "-a" "61f5f5d0a9f42c6c1d721614b010d116fd260fc13512d4ff7d5fd25bf9b4a8df"`
Aug 01 19:19:26.894 INFO kablam!     Checking assert_matches v1.3.0
Aug 01 19:19:26.902 INFO kablam!     Checking rmp-serde v0.13.7
Aug 01 19:19:28.414 INFO kablam!     Checking vertree v0.2.2 (file:///source)
Aug 01 19:19:31.711 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.711 INFO kablam!    --> src/tree.rs:268:14
Aug 01 19:19:31.711 INFO kablam!     |
Aug 01 19:19:31.711 INFO kablam! 268 |         let (mut queue, version, tree) = {
Aug 01 19:19:31.711 INFO kablam!     |              ----^^^^^
Aug 01 19:19:31.711 INFO kablam!     |              |
Aug 01 19:19:31.711 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:31.714 INFO kablam!     |
Aug 01 19:19:31.715 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 01 19:19:31.715 INFO kablam! 
Aug 01 19:19:31.718 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.718 INFO kablam!    --> src/tree.rs:282:14
Aug 01 19:19:31.718 INFO kablam!     |
Aug 01 19:19:31.718 INFO kablam! 282 |         let (mut queue, version, tree) = {
Aug 01 19:19:31.718 INFO kablam!     |              ----^^^^^
Aug 01 19:19:31.718 INFO kablam!     |              |
Aug 01 19:19:31.718 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:31.718 INFO kablam! 
Aug 01 19:19:31.721 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.721 INFO kablam!    --> src/tree.rs:295:14
Aug 01 19:19:31.721 INFO kablam!     |
Aug 01 19:19:31.721 INFO kablam! 295 |         let (mut set, version, tree) = {
Aug 01 19:19:31.721 INFO kablam!     |              ----^^^
Aug 01 19:19:31.721 INFO kablam!     |              |
Aug 01 19:19:31.721 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:31.721 INFO kablam! 
Aug 01 19:19:31.723 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.723 INFO kablam!    --> src/tree.rs:308:14
Aug 01 19:19:31.723 INFO kablam!     |
Aug 01 19:19:31.723 INFO kablam! 308 |         let (mut set, version, tree) = {
Aug 01 19:19:31.723 INFO kablam!     |              ----^^^
Aug 01 19:19:31.724 INFO kablam!     |              |
Aug 01 19:19:31.724 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:31.724 INFO kablam! 
Aug 01 19:19:31.725 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.725 INFO kablam!    --> src/tree.rs:322:13
Aug 01 19:19:31.725 INFO kablam!     |
Aug 01 19:19:31.725 INFO kablam! 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Aug 01 19:19:31.725 INFO kablam!     |             ----^^^^^
Aug 01 19:19:31.725 INFO kablam!     |             |
Aug 01 19:19:31.725 INFO kablam!     |             help: remove this `mut`
Aug 01 19:19:31.725 INFO kablam! 
Aug 01 19:19:31.727 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:31.727 INFO kablam!    --> src/tree.rs:328:13
Aug 01 19:19:31.727 INFO kablam!     |
Aug 01 19:19:31.727 INFO kablam! 328 |         let mut queue = node.content.get_set_mut().unwrap();
Aug 01 19:19:31.727 INFO kablam!     |             ----^^^^^
Aug 01 19:19:31.727 INFO kablam!     |             |
Aug 01 19:19:31.727 INFO kablam!     |             help: remove this `mut`
Aug 01 19:19:31.727 INFO kablam! 
Aug 01 19:19:32.307 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.307 INFO kablam!    --> src/tree.rs:268:14
Aug 01 19:19:32.307 INFO kablam!     |
Aug 01 19:19:32.307 INFO kablam! 268 |         let (mut queue, version, tree) = {
Aug 01 19:19:32.307 INFO kablam!     |              ----^^^^^
Aug 01 19:19:32.307 INFO kablam!     |              |
Aug 01 19:19:32.307 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:32.307 INFO kablam!     |
Aug 01 19:19:32.307 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 01 19:19:32.307 INFO kablam! 
Aug 01 19:19:32.309 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.310 INFO kablam!    --> src/tree.rs:282:14
Aug 01 19:19:32.310 INFO kablam!     |
Aug 01 19:19:32.310 INFO kablam! 282 |         let (mut queue, version, tree) = {
Aug 01 19:19:32.310 INFO kablam!     |              ----^^^^^
Aug 01 19:19:32.310 INFO kablam!     |              |
Aug 01 19:19:32.310 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:32.310 INFO kablam! 
Aug 01 19:19:32.311 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.311 INFO kablam!    --> src/tree.rs:295:14
Aug 01 19:19:32.311 INFO kablam!     |
Aug 01 19:19:32.312 INFO kablam! 295 |         let (mut set, version, tree) = {
Aug 01 19:19:32.312 INFO kablam!     |              ----^^^
Aug 01 19:19:32.312 INFO kablam!     |              |
Aug 01 19:19:32.312 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:32.312 INFO kablam! 
Aug 01 19:19:32.314 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.314 INFO kablam!    --> src/tree.rs:308:14
Aug 01 19:19:32.314 INFO kablam!     |
Aug 01 19:19:32.314 INFO kablam! 308 |         let (mut set, version, tree) = {
Aug 01 19:19:32.314 INFO kablam!     |              ----^^^
Aug 01 19:19:32.314 INFO kablam!     |              |
Aug 01 19:19:32.314 INFO kablam!     |              help: remove this `mut`
Aug 01 19:19:32.314 INFO kablam! 
Aug 01 19:19:32.315 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.315 INFO kablam!    --> src/tree.rs:322:13
Aug 01 19:19:32.315 INFO kablam!     |
Aug 01 19:19:32.315 INFO kablam! 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Aug 01 19:19:32.315 INFO kablam!     |             ----^^^^^
Aug 01 19:19:32.315 INFO kablam!     |             |
Aug 01 19:19:32.315 INFO kablam!     |             help: remove this `mut`
Aug 01 19:19:32.316 INFO kablam! 
Aug 01 19:19:32.317 INFO kablam! warning: variable does not need to be mutable
Aug 01 19:19:32.317 INFO kablam!    --> src/tree.rs:328:13
Aug 01 19:19:32.317 INFO kablam!     |
Aug 01 19:19:32.317 INFO kablam! 328 |         let mut queue = node.content.get_set_mut().unwrap();
Aug 01 19:19:32.317 INFO kablam!     |             ----^^^^^
Aug 01 19:19:32.317 INFO kablam!     |             |
Aug 01 19:19:32.317 INFO kablam!     |             help: remove this `mut`
Aug 01 19:19:32.317 INFO kablam! 
Aug 01 19:19:33.027 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 19:19:33.027 INFO kablam!  --> benches/basic.rs:1:1
Aug 01 19:19:33.027 INFO kablam!   |
Aug 01 19:19:33.027 INFO kablam! 1 | #![feature(test)]
Aug 01 19:19:33.027 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 19:19:33.027 INFO kablam! 
Aug 01 19:19:33.027 INFO kablam! error: aborting due to previous error
Aug 01 19:19:33.027 INFO kablam! 
Aug 01 19:19:33.028 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 19:19:33.036 INFO kablam! error: Could not compile `vertree`.
Aug 01 19:19:33.036 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 19:19:33.304 INFO kablam! error: build failed
Aug 01 19:19:33.306 INFO kablam! su: No module specific data is present
Aug 01 19:19:33.895 INFO running `"docker" "rm" "-f" "61f5f5d0a9f42c6c1d721614b010d116fd260fc13512d4ff7d5fd25bf9b4a8df"`
Aug 01 19:19:34.091 INFO blam! 61f5f5d0a9f42c6c1d721614b010d116fd260fc13512d4ff7d5fd25bf9b4a8df