Dec 14 14:40:09.784 INFO testing vertree-0.2.2 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 14:40:09.784 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 14 14:40:10.187 INFO [stdout] 1a2fa5c3559790c45a2374dd79fc2d960383970eb833582933abc27d95dd8bf6
Dec 14 14:40:10.190 INFO running `"docker" "start" "-a" "1a2fa5c3559790c45a2374dd79fc2d960383970eb833582933abc27d95dd8bf6"`
Dec 14 14:40:11.406 INFO [stderr] usermod: no changes
Dec 14 14:40:11.517 INFO [stderr]    Compiling serde v1.0.82
Dec 14 14:40:11.530 INFO [stderr]    Compiling error-chain v0.10.0
Dec 14 14:40:23.971 INFO [stderr]    Compiling rmp-serde v0.13.7
Dec 14 14:40:25.428 INFO [stderr]    Compiling vertree v0.2.2 (/source)
Dec 14 14:40:27.147 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.147 INFO [stderr]    --> src/tree.rs:268:14
Dec 14 14:40:27.147 INFO [stderr]     |
Dec 14 14:40:27.147 INFO [stderr] 268 |         let (mut queue, version, tree) = {
Dec 14 14:40:27.147 INFO [stderr]     |              ----^^^^^
Dec 14 14:40:27.147 INFO [stderr]     |              |
Dec 14 14:40:27.147 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:27.147 INFO [stderr]     |
Dec 14 14:40:27.147 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 14:40:27.147 INFO [stderr] 
Dec 14 14:40:27.148 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.148 INFO [stderr]    --> src/tree.rs:282:14
Dec 14 14:40:27.148 INFO [stderr]     |
Dec 14 14:40:27.149 INFO [stderr] 282 |         let (mut queue, version, tree) = {
Dec 14 14:40:27.149 INFO [stderr]     |              ----^^^^^
Dec 14 14:40:27.149 INFO [stderr]     |              |
Dec 14 14:40:27.149 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:27.149 INFO [stderr] 
Dec 14 14:40:27.150 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.150 INFO [stderr]    --> src/tree.rs:295:14
Dec 14 14:40:27.150 INFO [stderr]     |
Dec 14 14:40:27.150 INFO [stderr] 295 |         let (mut set, version, tree) = {
Dec 14 14:40:27.150 INFO [stderr]     |              ----^^^
Dec 14 14:40:27.150 INFO [stderr]     |              |
Dec 14 14:40:27.150 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:27.150 INFO [stderr] 
Dec 14 14:40:27.151 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.151 INFO [stderr]    --> src/tree.rs:308:14
Dec 14 14:40:27.151 INFO [stderr]     |
Dec 14 14:40:27.151 INFO [stderr] 308 |         let (mut set, version, tree) = {
Dec 14 14:40:27.151 INFO [stderr]     |              ----^^^
Dec 14 14:40:27.151 INFO [stderr]     |              |
Dec 14 14:40:27.151 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:27.151 INFO [stderr] 
Dec 14 14:40:27.152 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.152 INFO [stderr]    --> src/tree.rs:322:13
Dec 14 14:40:27.152 INFO [stderr]     |
Dec 14 14:40:27.152 INFO [stderr] 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Dec 14 14:40:27.152 INFO [stderr]     |             ----^^^^^
Dec 14 14:40:27.152 INFO [stderr]     |             |
Dec 14 14:40:27.152 INFO [stderr]     |             help: remove this `mut`
Dec 14 14:40:27.152 INFO [stderr] 
Dec 14 14:40:27.153 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:27.153 INFO [stderr]    --> src/tree.rs:328:13
Dec 14 14:40:27.153 INFO [stderr]     |
Dec 14 14:40:27.153 INFO [stderr] 328 |         let mut queue = node.content.get_set_mut().unwrap();
Dec 14 14:40:27.153 INFO [stderr]     |             ----^^^^^
Dec 14 14:40:27.153 INFO [stderr]     |             |
Dec 14 14:40:27.153 INFO [stderr]     |             help: remove this `mut`
Dec 14 14:40:27.153 INFO [stderr] 
Dec 14 14:40:30.377 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.94s
Dec 14 14:40:30.383 INFO [stderr] su: No module specific data is present
Dec 14 14:40:30.959 INFO running `"docker" "inspect" "1a2fa5c3559790c45a2374dd79fc2d960383970eb833582933abc27d95dd8bf6"`
Dec 14 14:40:31.279 INFO running `"docker" "rm" "-f" "1a2fa5c3559790c45a2374dd79fc2d960383970eb833582933abc27d95dd8bf6"`
Dec 14 14:40:31.559 INFO [stdout] 1a2fa5c3559790c45a2374dd79fc2d960383970eb833582933abc27d95dd8bf6
Dec 14 14:40:31.559 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 14 14:40:32.032 INFO [stdout] fd28460d27666259250d04c401eb90ebf3c4046acaeacece99c27aab84062117
Dec 14 14:40:32.035 INFO running `"docker" "start" "-a" "fd28460d27666259250d04c401eb90ebf3c4046acaeacece99c27aab84062117"`
Dec 14 14:40:33.979 INFO [stderr] usermod: no changes
Dec 14 14:40:34.123 INFO [stderr]    Compiling assert_matches v1.3.0
Dec 14 14:40:34.130 INFO [stderr]    Compiling env_logger v0.3.5
Dec 14 14:40:36.424 INFO [stderr]    Compiling quickcheck v0.4.1
Dec 14 14:40:39.479 INFO [stderr]    Compiling vertree v0.2.2 (/source)
Dec 14 14:40:42.349 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.349 INFO [stderr]    --> src/tree.rs:268:14
Dec 14 14:40:42.349 INFO [stderr]     |
Dec 14 14:40:42.349 INFO [stderr] 268 |         let (mut queue, version, tree) = {
Dec 14 14:40:42.349 INFO [stderr]     |              ----^^^^^
Dec 14 14:40:42.349 INFO [stderr]     |              |
Dec 14 14:40:42.349 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:42.349 INFO [stderr]     |
Dec 14 14:40:42.349 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 14 14:40:42.349 INFO [stderr] 
Dec 14 14:40:42.350 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.350 INFO [stderr]    --> src/tree.rs:282:14
Dec 14 14:40:42.350 INFO [stderr]     |
Dec 14 14:40:42.350 INFO [stderr] 282 |         let (mut queue, version, tree) = {
Dec 14 14:40:42.350 INFO [stderr]     |              ----^^^^^
Dec 14 14:40:42.350 INFO [stderr]     |              |
Dec 14 14:40:42.350 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:42.350 INFO [stderr] 
Dec 14 14:40:42.352 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.352 INFO [stderr]    --> src/tree.rs:295:14
Dec 14 14:40:42.352 INFO [stderr]     |
Dec 14 14:40:42.352 INFO [stderr] 295 |         let (mut set, version, tree) = {
Dec 14 14:40:42.352 INFO [stderr]     |              ----^^^
Dec 14 14:40:42.352 INFO [stderr]     |              |
Dec 14 14:40:42.352 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:42.352 INFO [stderr] 
Dec 14 14:40:42.353 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.353 INFO [stderr]    --> src/tree.rs:308:14
Dec 14 14:40:42.353 INFO [stderr]     |
Dec 14 14:40:42.353 INFO [stderr] 308 |         let (mut set, version, tree) = {
Dec 14 14:40:42.353 INFO [stderr]     |              ----^^^
Dec 14 14:40:42.353 INFO [stderr]     |              |
Dec 14 14:40:42.353 INFO [stderr]     |              help: remove this `mut`
Dec 14 14:40:42.353 INFO [stderr] 
Dec 14 14:40:42.354 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.354 INFO [stderr]    --> src/tree.rs:322:13
Dec 14 14:40:42.354 INFO [stderr]     |
Dec 14 14:40:42.354 INFO [stderr] 322 |         let mut queue = node.content.get_queue_mut().unwrap();
Dec 14 14:40:42.354 INFO [stderr]     |             ----^^^^^
Dec 14 14:40:42.354 INFO [stderr]     |             |
Dec 14 14:40:42.354 INFO [stderr]     |             help: remove this `mut`
Dec 14 14:40:42.354 INFO [stderr] 
Dec 14 14:40:42.355 INFO [stderr] warning: variable does not need to be mutable
Dec 14 14:40:42.355 INFO [stderr]    --> src/tree.rs:328:13
Dec 14 14:40:42.355 INFO [stderr]     |
Dec 14 14:40:42.355 INFO [stderr] 328 |         let mut queue = node.content.get_set_mut().unwrap();
Dec 14 14:40:42.355 INFO [stderr]     |             ----^^^^^
Dec 14 14:40:42.355 INFO [stderr]     |             |
Dec 14 14:40:42.355 INFO [stderr]     |             help: remove this `mut`
Dec 14 14:40:42.355 INFO [stderr] 
Dec 14 14:40:48.344 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.34s
Dec 14 14:40:48.351 INFO [stderr] su: No module specific data is present
Dec 14 14:40:49.267 INFO running `"docker" "inspect" "fd28460d27666259250d04c401eb90ebf3c4046acaeacece99c27aab84062117"`
Dec 14 14:40:49.663 INFO running `"docker" "rm" "-f" "fd28460d27666259250d04c401eb90ebf3c4046acaeacece99c27aab84062117"`
Dec 14 14:40:49.991 INFO [stdout] fd28460d27666259250d04c401eb90ebf3c4046acaeacece99c27aab84062117
Dec 14 14:40:49.997 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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 14 14:40:50.443 INFO [stdout] 1830a18707e1ffbbfd0504427f2a81a4989a31adedd27d3288b74099197aa3f6
Dec 14 14:40:50.445 INFO running `"docker" "start" "-a" "1830a18707e1ffbbfd0504427f2a81a4989a31adedd27d3288b74099197aa3f6"`
Dec 14 14:40:52.331 INFO [stderr] usermod: no changes
Dec 14 14:40:52.518 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
Dec 14 14:40:52.527 INFO [stderr]      Running /target/debug/deps/vertree-0f461d8f13ec64f3
Dec 14 14:40:52.536 INFO [stdout] 
Dec 14 14:40:52.543 INFO [stdout] running 9 tests
Dec 14 14:40:52.544 INFO [stdout] test containers::queue::tests::trivial_q ... ok
Dec 14 14:40:52.547 INFO [stdout] test iterators::tests::cow_path_iter ... ok
Dec 14 14:40:52.547 INFO [stdout] test iterators::tests::path_iter ... ok
Dec 14 14:40:52.547 INFO [stdout] test iterators::tests::create_nodes_iter_check ... ok
Dec 14 14:40:52.919 INFO [stdout] test iterators::tests::bad_path_iter ... ok
Dec 14 14:40:52.924 INFO [stdout] test tree::tests::create_and_delete_nodes ... ok
Dec 14 14:41:07.503 INFO [stdout] test iterators::tests::prop_walk_existing_paths ... ok
Dec 14 14:41:07.971 INFO [stdout] test snapshot::tests::prop_rountrip ... ok
Dec 14 14:41:09.005 INFO [stdout] test cas::tests::prop_multi_cas_equals_individual_ops ... ok
Dec 14 14:41:09.005 INFO [stdout] 
Dec 14 14:41:09.005 INFO [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 14:41:09.005 INFO [stdout] 
Dec 14 14:41:09.007 INFO [stderr]    Doc-tests vertree
Dec 14 14:41:10.935 INFO [stdout] 
Dec 14 14:41:10.935 INFO [stdout] running 4 tests
Dec 14 14:41:17.491 INFO [stdout] test src/containers/set.rs - containers::set::Set::difference (line 111) ... ok
Dec 14 14:41:18.539 INFO [stdout] test src/containers/set.rs - containers::set::Set::union (line 57) ... ok
Dec 14 14:41:19.255 INFO [stdout] test src/containers/set.rs - containers::set::Set::symmetric_difference (line 137) ... ok
Dec 14 14:41:19.283 INFO [stdout] test src/containers/set.rs - containers::set::Set::intersection (line 84) ... ok
Dec 14 14:41:19.283 INFO [stdout] 
Dec 14 14:41:19.284 INFO [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 14:41:19.284 INFO [stdout] 
Dec 14 14:41:19.321 INFO [stderr] su: No module specific data is present
Dec 14 14:41:20.420 INFO running `"docker" "inspect" "1830a18707e1ffbbfd0504427f2a81a4989a31adedd27d3288b74099197aa3f6"`
Dec 14 14:41:20.815 INFO running `"docker" "rm" "-f" "1830a18707e1ffbbfd0504427f2a81a4989a31adedd27d3288b74099197aa3f6"`
Dec 14 14:41:21.259 INFO [stdout] 1830a18707e1ffbbfd0504427f2a81a4989a31adedd27d3288b74099197aa3f6