[INFO] fetching crate histogram-sampler 0.4.0...
[INFO] extracting crate histogram-sampler 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/histogram-sampler/0.4.0
[INFO] extracting crate histogram-sampler 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/histogram-sampler/0.4.0
[INFO] validating manifest of histogram-sampler-0.4.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of histogram-sampler-0.4.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing histogram-sampler-0.4.0
[INFO] finished frobbing histogram-sampler-0.4.0
[INFO] frobbed toml for histogram-sampler-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/histogram-sampler/0.4.0/Cargo.toml
[INFO] started frobbing histogram-sampler-0.4.0
[INFO] finished frobbing histogram-sampler-0.4.0
[INFO] frobbed toml for histogram-sampler-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/histogram-sampler/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing histogram-sampler-0.4.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/histogram-sampler/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 7f76247ad838e90e59d89b4c34519b9ff4d4fc631447e68ef9958406b607c2e8
[INFO] running `"docker" "start" "-a" "7f76247ad838e90e59d89b4c34519b9ff4d4fc631447e68ef9958406b607c2e8"`
[INFO] [stderr]    Compiling histogram-sampler v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "7f76247ad838e90e59d89b4c34519b9ff4d4fc631447e68ef9958406b607c2e8"`
[INFO] running `"docker" "rm" "-f" "7f76247ad838e90e59d89b4c34519b9ff4d4fc631447e68ef9958406b607c2e8"`
[INFO] [stdout] 7f76247ad838e90e59d89b4c34519b9ff4d4fc631447e68ef9958406b607c2e8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/histogram-sampler/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c1d6e31f1568e37db7e6e9068a201acdaf02c62c300524b8f3d42d62cdf41d2c
[INFO] running `"docker" "start" "-a" "c1d6e31f1568e37db7e6e9068a201acdaf02c62c300524b8f3d42d62cdf41d2c"`
[INFO] [stderr]    Compiling histogram-sampler v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "c1d6e31f1568e37db7e6e9068a201acdaf02c62c300524b8f3d42d62cdf41d2c"`
[INFO] running `"docker" "rm" "-f" "c1d6e31f1568e37db7e6e9068a201acdaf02c62c300524b8f3d42d62cdf41d2c"`
[INFO] [stdout] c1d6e31f1568e37db7e6e9068a201acdaf02c62c300524b8f3d42d62cdf41d2c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/histogram-sampler/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 67a87c89ab5d52b2ca2ae6793d3cb9e02c55b730a0e632ca5695b5ff64a3817d
[INFO] running `"docker" "start" "-a" "67a87c89ab5d52b2ca2ae6793d3cb9e02c55b730a0e632ca5695b5ff64a3817d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/histogram_sampler-52b983bf96ffa55a
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests histogram-sampler
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Sampler (line 97) ... ok
[INFO] [stdout] test src/lib.rs -  (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "67a87c89ab5d52b2ca2ae6793d3cb9e02c55b730a0e632ca5695b5ff64a3817d"`
[INFO] running `"docker" "rm" "-f" "67a87c89ab5d52b2ca2ae6793d3cb9e02c55b730a0e632ca5695b5ff64a3817d"`
[INFO] [stdout] 67a87c89ab5d52b2ca2ae6793d3cb9e02c55b730a0e632ca5695b5ff64a3817d