[INFO] fetching crate balloon 0.0.5...
[INFO] extracting crate balloon 0.0.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/balloon/0.0.5
[INFO] extracting crate balloon 0.0.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/balloon/0.0.5
[INFO] validating manifest of balloon-0.0.5 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 balloon-0.0.5 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 balloon-0.0.5
[INFO] finished frobbing balloon-0.0.5
[INFO] frobbed toml for balloon-0.0.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/balloon/0.0.5/Cargo.toml
[INFO] started frobbing balloon-0.0.5
[INFO] finished frobbing balloon-0.0.5
[INFO] frobbed toml for balloon-0.0.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/balloon/0.0.5/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mohan v0.0.4
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing balloon-0.0.5 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/balloon/0.0.5:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 13936ef96410afba39422e7c21ba63274b5ca680111ceb0a02f1bf06fc4db50a
[INFO] running `"docker" "start" "-a" "13936ef96410afba39422e7c21ba63274b5ca680111ceb0a02f1bf06fc4db50a"`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling bech32 v0.7.1
[INFO] [stderr]    Compiling elapsed v0.1.2
[INFO] [stderr]    Compiling subtle v2.1.1
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling blake2b_simd v0.5.6
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling fixed-hash v0.4.0
[INFO] [stderr]    Compiling tai64 v2.0.1
[INFO] [stderr]    Compiling uint v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling mohan v0.0.4
[INFO] [stderr]    Compiling balloon v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/buffer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn get(&self, index: usize) -> Option<&T> { self.back.get(index) }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/buffer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { self.back.get_mut(index) }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]   --> src/buffer.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn clear(&mut self) { self.back.clear() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/buffer.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn is_empty(&self) -> bool { self.back.is_empty() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/buffer.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn len(&self) -> usize { self.back.len() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.85s
[INFO] running `"docker" "inspect" "13936ef96410afba39422e7c21ba63274b5ca680111ceb0a02f1bf06fc4db50a"`
[INFO] running `"docker" "rm" "-f" "13936ef96410afba39422e7c21ba63274b5ca680111ceb0a02f1bf06fc4db50a"`
[INFO] [stdout] 13936ef96410afba39422e7c21ba63274b5ca680111ceb0a02f1bf06fc4db50a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/balloon/0.0.5:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5fb407b645307596be422e37810462a83f2675cbcc6bbfa9482aa25f7fcbd17c
[INFO] running `"docker" "start" "-a" "5fb407b645307596be422e37810462a83f2675cbcc6bbfa9482aa25f7fcbd17c"`
[INFO] [stderr]    Compiling bstr v0.2.6
[INFO] [stderr]    Compiling tinytemplate v1.0.2
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling balloon v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/buffer.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn get(&self, index: usize) -> Option<&T> { self.back.get(index) }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/buffer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { self.back.get_mut(index) }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]   --> src/buffer.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn clear(&mut self) { self.back.clear() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/buffer.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn is_empty(&self) -> bool { self.back.is_empty() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/buffer.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn len(&self) -> usize { self.back.len() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.09s
[INFO] running `"docker" "inspect" "5fb407b645307596be422e37810462a83f2675cbcc6bbfa9482aa25f7fcbd17c"`
[INFO] running `"docker" "rm" "-f" "5fb407b645307596be422e37810462a83f2675cbcc6bbfa9482aa25f7fcbd17c"`
[INFO] [stdout] 5fb407b645307596be422e37810462a83f2675cbcc6bbfa9482aa25f7fcbd17c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/balloon/0.0.5:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 70de1f517e568bdee65de866e50498037f89f03f8d4c1655c76449dcb5e0d3e6
[INFO] running `"docker" "start" "-a" "70de1f517e568bdee65de866e50498037f89f03f8d4c1655c76449dcb5e0d3e6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/balloon-2afb826586dc8f70
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests balloon
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "70de1f517e568bdee65de866e50498037f89f03f8d4c1655c76449dcb5e0d3e6"`
[INFO] running `"docker" "rm" "-f" "70de1f517e568bdee65de866e50498037f89f03f8d4c1655c76449dcb5e0d3e6"`
[INFO] [stdout] 70de1f517e568bdee65de866e50498037f89f03f8d4c1655c76449dcb5e0d3e6