[INFO] crate hornet 0.1.0 is already in cache
[INFO] extracting crate hornet 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/hornet/0.1.0
[INFO] extracting crate hornet 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/hornet/0.1.0
[INFO] validating manifest of hornet-0.1.0 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 hornet-0.1.0 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 hornet-0.1.0
[INFO] finished frobbing hornet-0.1.0
[INFO] frobbed toml for hornet-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/hornet/0.1.0/Cargo.toml
[INFO] started frobbing hornet-0.1.0
[INFO] finished frobbing hornet-0.1.0
[INFO] frobbed toml for hornet-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/hornet/0.1.0/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 hornet-0.1.0 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/hornet/0.1.0:/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] 8766c0a5b3352bc26f903cd11e345a7a1e29f328109004b03d70d0eb15938fe2
[INFO] running `"docker" "start" "-a" "8766c0a5b3352bc26f903cd11e345a7a1e29f328109004b03d70d0eb15938fe2"`
[INFO] [stderr]    Compiling hdrsample v4.0.0
[INFO] [stderr]    Compiling hornet v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `nix` is imported redundantly
[INFO] [stderr]   --> src/client/mod.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     use nix;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/lib.rs:9:14
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[cfg(unix)] extern crate nix;
[INFO] [stderr]    |              ----------------- the item `nix` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |     pub fn export(&self, metrics: &mut [&mut MMVWriter]) -> io::Result<()> {
[INFO] [stderr]     |                                              ^^^^^^^^^ help: use `dyn`: `dyn MMVWriter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.71s
[INFO] running `"docker" "inspect" "8766c0a5b3352bc26f903cd11e345a7a1e29f328109004b03d70d0eb15938fe2"`
[INFO] running `"docker" "rm" "-f" "8766c0a5b3352bc26f903cd11e345a7a1e29f328109004b03d70d0eb15938fe2"`
[INFO] [stdout] 8766c0a5b3352bc26f903cd11e345a7a1e29f328109004b03d70d0eb15938fe2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/hornet/0.1.0:/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] d80290d2391d18841f18031a913386256bf75027cbd8e53623652dc64a06e4e2
[INFO] running `"docker" "start" "-a" "d80290d2391d18841f18031a913386256bf75027cbd8e53623652dc64a06e4e2"`
[INFO] [stderr]    Compiling hornet v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/client/metric/mod.rs:1355:39
[INFO] [stderr]      |
[INFO] [stderr] 1355 |         let mut mmv_writers: Vec<&mut MMVWriter> = metrics.iter_mut()
[INFO] [stderr]      |                                       ^^^^^^^^^ help: use `dyn`: `dyn MMVWriter`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/client/metric/mod.rs:1356:32
[INFO] [stderr]      |
[INFO] [stderr] 1356 |             .map(|m| m as &mut MMVWriter)
[INFO] [stderr]      |                                ^^^^^^^^^ help: use `dyn`: `dyn MMVWriter`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `nix` is imported redundantly
[INFO] [stderr]   --> src/client/mod.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     use nix;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/lib.rs:9:14
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[cfg(unix)] extern crate nix;
[INFO] [stderr]    |              ----------------- the item `nix` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |     pub fn export(&self, metrics: &mut [&mut MMVWriter]) -> io::Result<()> {
[INFO] [stderr]     |                                              ^^^^^^^^^ help: use `dyn`: `dyn MMVWriter`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.45s
[INFO] running `"docker" "inspect" "d80290d2391d18841f18031a913386256bf75027cbd8e53623652dc64a06e4e2"`
[INFO] running `"docker" "rm" "-f" "d80290d2391d18841f18031a913386256bf75027cbd8e53623652dc64a06e4e2"`
[INFO] [stdout] d80290d2391d18841f18031a913386256bf75027cbd8e53623652dc64a06e4e2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/hornet/0.1.0:/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] 735970f32b332384db16f1f36f1b865cff724f85793c95a994f53c284aaf8f70
[INFO] running `"docker" "start" "-a" "735970f32b332384db16f1f36f1b865cff724f85793c95a994f53c284aaf8f70"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hornet-004e5ad0d4fb193a
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test client::metric::counter::test ... ok
[INFO] [stderr] error: process didn't exit successfully: `/opt/crater/target/debug/deps/hornet-004e5ad0d4fb193a` (signal: 7, SIGBUS: access to undefined memory)
[INFO] running `"docker" "inspect" "735970f32b332384db16f1f36f1b865cff724f85793c95a994f53c284aaf8f70"`
[INFO] running `"docker" "rm" "-f" "735970f32b332384db16f1f36f1b865cff724f85793c95a994f53c284aaf8f70"`
[INFO] [stdout] 735970f32b332384db16f1f36f1b865cff724f85793c95a994f53c284aaf8f70