Dec 12 05:15:04.888 INFO checking vertree-0.2.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 05:15:04.888 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 12 05:15:05.150 INFO [stdout] 1c14c31da868bf80518cb6a816136c71d20259d43f14a48eccc883f6c6d601c8
Dec 12 05:15:05.154 INFO running `"docker" "start" "-a" "1c14c31da868bf80518cb6a816136c71d20259d43f14a48eccc883f6c6d601c8"`
Dec 12 05:15:05.661 INFO [stderr] usermod: no changes
Dec 12 05:15:05.764 INFO [stderr]    Compiling serde v1.0.82
Dec 12 05:15:05.764 INFO [stderr]     Checking assert_matches v1.3.0
Dec 12 05:15:05.776 INFO [stderr]     Checking quickcheck v0.4.1
Dec 12 05:15:16.048 INFO [stderr]     Checking rmp-serde v0.13.7
Dec 12 05:15:17.063 INFO [stderr]     Checking vertree v0.2.2 (/source)
Dec 12 05:15:19.269 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.269 INFO [stderr]    --> src/tree.rs:268:14
Dec 12 05:15:19.269 INFO [stderr]     |
Dec 12 05:15:19.269 INFO [stderr] 268 |         let (mut queue, version, tree) = {
Dec 12 05:15:19.269 INFO [stderr]     |              ----^^^^^
Dec 12 05:15:19.269 INFO [stderr]     |              |
Dec 12 05:15:19.276 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:19.276 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.276 INFO [stderr]    --> src/tree.rs:282:14
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr] 282 |         let (mut queue, version, tree) = {
Dec 12 05:15:19.276 INFO [stderr]     |              ----^^^^^
Dec 12 05:15:19.276 INFO [stderr]     |              |
Dec 12 05:15:19.276 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:19.276 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.276 INFO [stderr]    --> src/tree.rs:295:14
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr] 295 |         let (mut set, version, tree) = {
Dec 12 05:15:19.276 INFO [stderr]     |              ----^^^
Dec 12 05:15:19.276 INFO [stderr]     |              |
Dec 12 05:15:19.276 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:19.276 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.276 INFO [stderr]    --> src/tree.rs:308:14
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr] 308 |         let (mut set, version, tree) = {
Dec 12 05:15:19.276 INFO [stderr]     |              ----^^^
Dec 12 05:15:19.276 INFO [stderr]     |              |
Dec 12 05:15:19.276 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:19.276 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.276 INFO [stderr]    --> src/tree.rs:322:13
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr] 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Dec 12 05:15:19.276 INFO [stderr]     |             ----^^^^^
Dec 12 05:15:19.276 INFO [stderr]     |             |
Dec 12 05:15:19.276 INFO [stderr]     |             help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:19.276 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:19.276 INFO [stderr]    --> src/tree.rs:328:13
Dec 12 05:15:19.276 INFO [stderr]     |
Dec 12 05:15:19.276 INFO [stderr] 328 |         let mut queue = node.content.get_set_mut().unwrap();
Dec 12 05:15:19.276 INFO [stderr]     |             ----^^^^^
Dec 12 05:15:19.276 INFO [stderr]     |             |
Dec 12 05:15:19.276 INFO [stderr]     |             help: remove this `mut`
Dec 12 05:15:19.276 INFO [stderr] 
Dec 12 05:15:20.351 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.351 INFO [stderr]    --> src/tree.rs:268:14
Dec 12 05:15:20.351 INFO [stderr]     |
Dec 12 05:15:20.351 INFO [stderr] 268 |         let (mut queue, version, tree) = {
Dec 12 05:15:20.351 INFO [stderr]     |              ----^^^^^
Dec 12 05:15:20.351 INFO [stderr]     |              |
Dec 12 05:15:20.351 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:20.351 INFO [stderr]     |
Dec 12 05:15:20.351 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 05:15:20.351 INFO [stderr] 
Dec 12 05:15:20.352 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.353 INFO [stderr]    --> src/tree.rs:282:14
Dec 12 05:15:20.353 INFO [stderr]     |
Dec 12 05:15:20.353 INFO [stderr] 282 |         let (mut queue, version, tree) = {
Dec 12 05:15:20.353 INFO [stderr]     |              ----^^^^^
Dec 12 05:15:20.353 INFO [stderr]     |              |
Dec 12 05:15:20.353 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:20.354 INFO [stderr] 
Dec 12 05:15:20.355 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.356 INFO [stderr]    --> src/tree.rs:295:14
Dec 12 05:15:20.356 INFO [stderr]     |
Dec 12 05:15:20.356 INFO [stderr] 295 |         let (mut set, version, tree) = {
Dec 12 05:15:20.360 INFO [stderr]     |              ----^^^
Dec 12 05:15:20.360 INFO [stderr]     |              |
Dec 12 05:15:20.360 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:20.360 INFO [stderr] 
Dec 12 05:15:20.364 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.364 INFO [stderr]    --> src/tree.rs:308:14
Dec 12 05:15:20.365 INFO [stderr]     |
Dec 12 05:15:20.366 INFO [stderr] 308 |         let (mut set, version, tree) = {
Dec 12 05:15:20.366 INFO [stderr]     |              ----^^^
Dec 12 05:15:20.366 INFO [stderr]     |              |
Dec 12 05:15:20.366 INFO [stderr]     |              help: remove this `mut`
Dec 12 05:15:20.366 INFO [stderr] 
Dec 12 05:15:20.366 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.366 INFO [stderr]    --> src/tree.rs:322:13
Dec 12 05:15:20.367 INFO [stderr]     |
Dec 12 05:15:20.367 INFO [stderr] 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Dec 12 05:15:20.367 INFO [stderr]     |             ----^^^^^
Dec 12 05:15:20.367 INFO [stderr]     |             |
Dec 12 05:15:20.367 INFO [stderr]     |             help: remove this `mut`
Dec 12 05:15:20.368 INFO [stderr] 
Dec 12 05:15:20.368 INFO [stderr] warning: variable does not need to be mutable
Dec 12 05:15:20.368 INFO [stderr]    --> src/tree.rs:328:13
Dec 12 05:15:20.369 INFO [stderr]     |
Dec 12 05:15:20.369 INFO [stderr] 328 |         let mut queue = node.content.get_set_mut().unwrap();
Dec 12 05:15:20.369 INFO [stderr]     |             ----^^^^^
Dec 12 05:15:20.369 INFO [stderr]     |             |
Dec 12 05:15:20.372 INFO [stderr]     |             help: remove this `mut`
Dec 12 05:15:20.372 INFO [stderr] 
Dec 12 05:15:23.444 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.75s
Dec 12 05:15:23.451 INFO [stderr] su: No module specific data is present
Dec 12 05:15:24.113 INFO running `"docker" "inspect" "1c14c31da868bf80518cb6a816136c71d20259d43f14a48eccc883f6c6d601c8"`
Dec 12 05:15:24.332 INFO running `"docker" "rm" "-f" "1c14c31da868bf80518cb6a816136c71d20259d43f14a48eccc883f6c6d601c8"`
Dec 12 05:15:24.676 INFO [stdout] 1c14c31da868bf80518cb6a816136c71d20259d43f14a48eccc883f6c6d601c8