[INFO] cloning repository https://github.com/BlueSpaceCanary/rustbucket
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlueSpaceCanary/rustbucket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueSpaceCanary%2Frustbucket"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueSpaceCanary%2Frustbucket'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b384ebb166e1a09a562a3ffbdcb34a679f8b8ee5
[INFO] testing BlueSpaceCanary/rustbucket against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueSpaceCanary%2Frustbucket" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BlueSpaceCanary/rustbucket on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BlueSpaceCanary/rustbucket
[INFO] finished tweaking git repo https://github.com/BlueSpaceCanary/rustbucket
[INFO] tweaked toml for git repo https://github.com/BlueSpaceCanary/rustbucket written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/BlueSpaceCanary/rustbucket already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e529e90c5369a3c0684d994fe5f3492e0c44720449a9e2259bd05f6930d411bc
[INFO] running `"docker" "start" "-a" "e529e90c5369a3c0684d994fe5f3492e0c44720449a9e2259bd05f6930d411bc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.15
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling metrics-core v0.5.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling metrics v0.12.1
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling dtoa v0.4.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling arc-swap v0.3.11
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]    Compiling ratelimit v0.4.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling openssl-sys v0.9.56
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling quanta v0.3.1
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling hdrhistogram v6.3.4
[INFO] [stderr]    Compiling addr2line v0.12.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling thiserror v1.0.19
[INFO] [stderr]    Compiling pin-project v0.4.17
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling metrics-exporter-log v0.4.0
[INFO] [stderr]    Compiling irc-proto v0.14.0
[INFO] [stderr]    Compiling diesel v1.4.4
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling hyper v0.13.5
[INFO] [stderr]    Compiling metrics-util v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling serde_yaml v0.8.12
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling metrics-observer-prometheus v0.1.4
[INFO] [stderr]    Compiling metrics-observer-yaml v0.1.1
[INFO] [stderr]    Compiling metrics-observer-json v0.1.1
[INFO] [stderr]    Compiling irc v0.14.0
[INFO] [stderr]    Compiling metrics-exporter-http v0.3.0
[INFO] [stderr]    Compiling metrics-runtime v0.13.0
[INFO] [stderr]    Compiling rustbucket v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::hippocampus::Hippocampus`
[INFO] [stderr]  --> src/brain/responder.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::hippocampus::Hippocampus;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/brain/hippocampus.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(path: &'static str) -> Self {
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/brain/hippocampus.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn recall(&self, key: &str) -> Option<Factoid> {
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `factoid`
[INFO] [stderr]   --> src/brain/hippocampus.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn learn(&self, factoid: &NewFactoid) -> Result<(), &'static str> {
[INFO] [stderr]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_factoid`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_rng_seed`
[INFO] [stderr]   --> src/brain.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn set_rng_seed(&mut self, seed: u64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 02s
[INFO] running `"docker" "inspect" "e529e90c5369a3c0684d994fe5f3492e0c44720449a9e2259bd05f6930d411bc"`
[INFO] running `"docker" "rm" "-f" "e529e90c5369a3c0684d994fe5f3492e0c44720449a9e2259bd05f6930d411bc"`
[INFO] [stdout] e529e90c5369a3c0684d994fe5f3492e0c44720449a9e2259bd05f6930d411bc
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9ada9a44252b8d876abeb29c5393390ade990469e79dbce044d8a41f95c180e2
[INFO] running `"docker" "start" "-a" "9ada9a44252b8d876abeb29c5393390ade990469e79dbce044d8a41f95c180e2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rustbucket v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::hippocampus::Hippocampus`
[INFO] [stderr]  --> src/brain/responder.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::hippocampus::Hippocampus;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/brain/hippocampus.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(path: &'static str) -> Self {
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/brain/hippocampus.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn recall(&self, key: &str) -> Option<Factoid> {
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `factoid`
[INFO] [stderr]   --> src/brain/hippocampus.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn learn(&self, factoid: &NewFactoid) -> Result<(), &'static str> {
[INFO] [stderr]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_factoid`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.09s
[INFO] running `"docker" "inspect" "9ada9a44252b8d876abeb29c5393390ade990469e79dbce044d8a41f95c180e2"`
[INFO] running `"docker" "rm" "-f" "9ada9a44252b8d876abeb29c5393390ade990469e79dbce044d8a41f95c180e2"`
[INFO] [stdout] 9ada9a44252b8d876abeb29c5393390ade990469e79dbce044d8a41f95c180e2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc5260758b7ad998daeca4b5108891966e9261141db7291e75110d9377109eb9
[INFO] running `"docker" "start" "-a" "dc5260758b7ad998daeca4b5108891966e9261141db7291e75110d9377109eb9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `super::hippocampus::Hippocampus`
[INFO] [stderr]  --> src/brain/responder.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::hippocampus::Hippocampus;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/brain/hippocampus.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(path: &'static str) -> Self {
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/brain/hippocampus.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn recall(&self, key: &str) -> Option<Factoid> {
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `factoid`
[INFO] [stderr]   --> src/brain/hippocampus.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn learn(&self, factoid: &NewFactoid) -> Result<(), &'static str> {
[INFO] [stderr]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_factoid`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustbucket-6cf79d5e4fa2e76b
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test brain::responder::test_default_responders ... ok
[INFO] [stdout] test brain::tests::can_set_and_retrieve_multi_factoid ... ok
[INFO] [stdout] test brain::responder::test_factoids_respond ... ok
[INFO] [stdout] test brain::tests::can_create_factoid ... ok
[INFO] [stdout] test brain::util::test_is_extension ... ok
[INFO] [stdout] test brain::tests::no_nonfactoid_retrieval ... ok
[INFO] [stdout] test brain::responder::test_responder_priority ... ok
[INFO] [stdout] test brain::tests::ids_non_factoid_creation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "dc5260758b7ad998daeca4b5108891966e9261141db7291e75110d9377109eb9"`
[INFO] running `"docker" "rm" "-f" "dc5260758b7ad998daeca4b5108891966e9261141db7291e75110d9377109eb9"`
[INFO] [stdout] dc5260758b7ad998daeca4b5108891966e9261141db7291e75110d9377109eb9