[INFO] crate raft-consensus 0.4.0 is already in cache
[INFO] extracting crate raft-consensus 0.4.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/raft-consensus/0.4.0
[INFO] extracting crate raft-consensus 0.4.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/raft-consensus/0.4.0
[INFO] validating manifest of raft-consensus-0.4.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of raft-consensus-0.4.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing raft-consensus-0.4.0
[INFO] finished frobbing raft-consensus-0.4.0
[INFO] frobbed toml for raft-consensus-0.4.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/raft-consensus/0.4.0/Cargo.toml
[INFO] started frobbing raft-consensus-0.4.0
[INFO] finished frobbing raft-consensus-0.4.0
[INFO] frobbed toml for raft-consensus-0.4.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/raft-consensus/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing raft-consensus-0.4.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/raft-consensus/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e18af3f9fa5c62a7c01214b0601ea19ac53e4d2cd305ae5c932f19e1ce82c166
[INFO] running `"docker" "start" "-a" "e18af3f9fa5c62a7c01214b0601ea19ac53e4d2cd305ae5c932f19e1ce82c166"`
[INFO] [stderr]    Compiling raft-consensus v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:39:23
[INFO] [stderr]    |
[INFO] [stderr] 39 |     PersistentLog(Box<StdError + 'static + Send + Sync>),
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + 'static + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `"docker" "inspect" "e18af3f9fa5c62a7c01214b0601ea19ac53e4d2cd305ae5c932f19e1ce82c166"`
[INFO] running `"docker" "rm" "-f" "e18af3f9fa5c62a7c01214b0601ea19ac53e4d2cd305ae5c932f19e1ce82c166"`
[INFO] [stdout] e18af3f9fa5c62a7c01214b0601ea19ac53e4d2cd305ae5c932f19e1ce82c166
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/raft-consensus/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b07e33ac1d44e9d429efd367bb297ef71d4010202bcc70c7afd156885a4a1368
[INFO] running `"docker" "start" "-a" "b07e33ac1d44e9d429efd367bb297ef71d4010202bcc70c7afd156885a4a1368"`
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling raft-consensus v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:39:23
[INFO] [stderr]    |
[INFO] [stderr] 39 |     PersistentLog(Box<StdError + 'static + Send + Sync>),
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdError + 'static + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/consensus.rs:1112:24
[INFO] [stderr]      |
[INFO] [stderr] 1112 |             for (peer, mut consensus) in self.peers.iter_mut() {
[INFO] [stderr]      |                        ----^^^^^^^^^
[INFO] [stderr]      |                        |
[INFO] [stderr]      |                        help: remove this `mut`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/consensus.rs:1119:21
[INFO] [stderr]      |
[INFO] [stderr] 1119 |                 let mut entry = timeouts.entry(peer.clone()).or_insert(HashSet::new());
[INFO] [stderr]      |                     ----^^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/consensus.rs:1132:21
[INFO] [stderr]      |
[INFO] [stderr] 1132 |                 let mut peer_consensus = self.peers.get_mut(&to).unwrap();
[INFO] [stderr]      |                     ----^^^^^^^^^^^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/consensus.rs:1141:21
[INFO] [stderr]      |
[INFO] [stderr] 1141 |                 let mut entry = timeouts
[INFO] [stderr]      |                     ----^^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.46s
[INFO] running `"docker" "inspect" "b07e33ac1d44e9d429efd367bb297ef71d4010202bcc70c7afd156885a4a1368"`
[INFO] running `"docker" "rm" "-f" "b07e33ac1d44e9d429efd367bb297ef71d4010202bcc70c7afd156885a4a1368"`
[INFO] [stdout] b07e33ac1d44e9d429efd367bb297ef71d4010202bcc70c7afd156885a4a1368
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/raft-consensus/0.4.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2a1f67cedda6a9dd662572472d991ad4e8fda90314856d2a9332fb7fb510fafd
[INFO] running `"docker" "start" "-a" "2a1f67cedda6a9dd662572472d991ad4e8fda90314856d2a9332fb7fb510fafd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/raft_consensus-89044ea620b91d8f
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test consensus::test::test_heartbeat ... ok
[INFO] [stdout] test consensus::test::test_slow_heartbeat ... ok
[INFO] [stdout] test consensus::test::test_solitary_consensus_transition_to_leader ... ok
[INFO] [stdout] test consensus::test::test_append_reorder ... ok
[INFO] [stdout] test consensus::test::test_majority ... ok
[INFO] [stdout] test persistent_log::mem::test::test_current_term ... ok
[INFO] [stdout] test persistent_log::mem::test::test_append_entries ... ok
[INFO] [stdout] test consensus::test::test_election ... ok
[INFO] [stdout] test state::tests::test_count_match_indexes ... ok
[INFO] [stdout] test persistent_log::mem::test::test_voted_for ... ok
[INFO] [stdout] test consensus::test::test_proposal ... ok
[INFO] [stdout] test persistent_log::fs::test::test_voted_for ... ok
[INFO] [stdout] test persistent_log::fs::test::test_append_entries ... ok
[INFO] [stdout] test persistent_log::fs::test::test_restore_log ... ok
[INFO] [stdout] test persistent_log::fs::test::test_current_term ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests raft-consensus
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2a1f67cedda6a9dd662572472d991ad4e8fda90314856d2a9332fb7fb510fafd"`
[INFO] running `"docker" "rm" "-f" "2a1f67cedda6a9dd662572472d991ad4e8fda90314856d2a9332fb7fb510fafd"`
[INFO] [stdout] 2a1f67cedda6a9dd662572472d991ad4e8fda90314856d2a9332fb7fb510fafd