[INFO] crate zipkin 0.3.5 is already in cache
[INFO] extracting crate zipkin 0.3.5 into work/ex/beta-1.38-1/sources/1.37.0/reg/zipkin/0.3.5
[INFO] extracting crate zipkin 0.3.5 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zipkin/0.3.5
[INFO] validating manifest of zipkin-0.3.5 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 zipkin-0.3.5 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 zipkin-0.3.5
[INFO] finished frobbing zipkin-0.3.5
[INFO] frobbed toml for zipkin-0.3.5 written to work/ex/beta-1.38-1/sources/1.37.0/reg/zipkin/0.3.5/Cargo.toml
[INFO] started frobbing zipkin-0.3.5
[INFO] finished frobbing zipkin-0.3.5
[INFO] frobbed toml for zipkin-0.3.5 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zipkin/0.3.5/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 zipkin-0.3.5 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zipkin/0.3.5:/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] cbb42c02685c2653326228def709d683a95897f272bbc73fa7dd0deb9f91463d
[INFO] running `"docker" "start" "-a" "cbb42c02685c2653326228def709d683a95897f272bbc73fa7dd0deb9f91463d"`
[INFO] [stderr]    Compiling data-encoding v2.1.2
[INFO] [stderr]    Compiling thread-local-object v0.1.0
[INFO] [stderr]    Compiling zipkin-types v0.1.0
[INFO] [stderr]    Compiling zipkin v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:259:19
[INFO] [stderr]     |
[INFO] [stderr] 259 |     reporter: Box<Report + Sync + Send>,
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[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/tracer.rs:260:18
[INFO] [stderr]     |
[INFO] [stderr] 260 |     sampler: Box<Sample + Sync + Send>,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:395:26
[INFO] [stderr]     |
[INFO] [stderr] 395 |     reporter: Option<Box<Report + Sync + Send>>,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:396:25
[INFO] [stderr]     |
[INFO] [stderr] 396 |     sampler: Option<Box<Sample + Sync + Send>>,
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:403:46
[INFO] [stderr]     |
[INFO] [stderr] 403 |     pub fn reporter(&mut self, reporter: Box<Report + Sync + Send>) -> &mut Builder {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:411:44
[INFO] [stderr]     |
[INFO] [stderr] 411 |     pub fn sampler(&mut self, sampler: Box<Sample + Sync + Send>) -> &mut Builder {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.41s
[INFO] running `"docker" "inspect" "cbb42c02685c2653326228def709d683a95897f272bbc73fa7dd0deb9f91463d"`
[INFO] running `"docker" "rm" "-f" "cbb42c02685c2653326228def709d683a95897f272bbc73fa7dd0deb9f91463d"`
[INFO] [stdout] cbb42c02685c2653326228def709d683a95897f272bbc73fa7dd0deb9f91463d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zipkin/0.3.5:/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] 4493b55b3ba4825b471bd7030f43698af35964e0a82a869e186b5806ecc2b4fe
[INFO] running `"docker" "start" "-a" "4493b55b3ba4825b471bd7030f43698af35964e0a82a869e186b5806ecc2b4fe"`
[INFO] [stderr]    Compiling zipkin v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:259:19
[INFO] [stderr]     |
[INFO] [stderr] 259 |     reporter: Box<Report + Sync + Send>,
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[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/tracer.rs:260:18
[INFO] [stderr]     |
[INFO] [stderr] 260 |     sampler: Box<Sample + Sync + Send>,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:395:26
[INFO] [stderr]     |
[INFO] [stderr] 395 |     reporter: Option<Box<Report + Sync + Send>>,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:396:25
[INFO] [stderr]     |
[INFO] [stderr] 396 |     sampler: Option<Box<Sample + Sync + Send>>,
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:403:46
[INFO] [stderr]     |
[INFO] [stderr] 403 |     pub fn reporter(&mut self, reporter: Box<Report + Sync + Send>) -> &mut Builder {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Report + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tracer.rs:411:44
[INFO] [stderr]     |
[INFO] [stderr] 411 |     pub fn sampler(&mut self, sampler: Box<Sample + Sync + Send>) -> &mut Builder {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Sample + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `"docker" "inspect" "4493b55b3ba4825b471bd7030f43698af35964e0a82a869e186b5806ecc2b4fe"`
[INFO] running `"docker" "rm" "-f" "4493b55b3ba4825b471bd7030f43698af35964e0a82a869e186b5806ecc2b4fe"`
[INFO] [stdout] 4493b55b3ba4825b471bd7030f43698af35964e0a82a869e186b5806ecc2b4fe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zipkin/0.3.5:/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] 4e90700172e549ca374034cb8f49153e8bd75e66eb5876e4a98e012e8d888efe
[INFO] running `"docker" "start" "-a" "4e90700172e549ca374034cb8f49153e8bd75e66eb5876e4a98e012e8d888efe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::detach ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zipkin-fdae1f922971d9f9
[INFO] [stderr]    Doc-tests zipkin
[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" "4e90700172e549ca374034cb8f49153e8bd75e66eb5876e4a98e012e8d888efe"`
[INFO] running `"docker" "rm" "-f" "4e90700172e549ca374034cb8f49153e8bd75e66eb5876e4a98e012e8d888efe"`
[INFO] [stdout] 4e90700172e549ca374034cb8f49153e8bd75e66eb5876e4a98e012e8d888efe