[INFO] updating cached repository cronokirby/huffman-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cronokirby/huffman-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cronokirby/huffman-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/cronokirby/huffman-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cronokirby/huffman-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cronokirby/huffman-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cronokirby/huffman-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cronokirby/huffman-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e04bcc9bd24634e15b047e8aff312748b3eeb52
[INFO] sha for GitHub repo cronokirby/huffman-rs: 0e04bcc9bd24634e15b047e8aff312748b3eeb52
[INFO] validating manifest of cronokirby/huffman-rs 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 cronokirby/huffman-rs 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 cronokirby/huffman-rs
[INFO] finished frobbing cronokirby/huffman-rs
[INFO] frobbed toml for cronokirby/huffman-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/cronokirby/huffman-rs/Cargo.toml
[INFO] started frobbing cronokirby/huffman-rs
[INFO] finished frobbing cronokirby/huffman-rs
[INFO] frobbed toml for cronokirby/huffman-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cronokirby/huffman-rs/Cargo.toml
[INFO] crate cronokirby/huffman-rs already has a lockfile, it will not be regenerated
[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 cronokirby/huffman-rs 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/gh/cronokirby/huffman-rs:/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] 19cfac0f849208baa1cc093154c3dbbb6aeb6888078289e2a2dace045f493e53
[INFO] running `"docker" "start" "-a" "19cfac0f849208baa1cc093154c3dbbb6aeb6888078289e2a2dace045f493e53"`
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling structopt v0.2.14
[INFO] [stderr]    Compiling huffman v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.02s
[INFO] running `"docker" "inspect" "19cfac0f849208baa1cc093154c3dbbb6aeb6888078289e2a2dace045f493e53"`
[INFO] running `"docker" "rm" "-f" "19cfac0f849208baa1cc093154c3dbbb6aeb6888078289e2a2dace045f493e53"`
[INFO] [stdout] 19cfac0f849208baa1cc093154c3dbbb6aeb6888078289e2a2dace045f493e53
[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/gh/cronokirby/huffman-rs:/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] f1ff3b766115e027f4e5fa2bd097a99278558212bf957ad99f2c6f9b9591a647
[INFO] running `"docker" "start" "-a" "f1ff3b766115e027f4e5fa2bd097a99278558212bf957ad99f2c6f9b9591a647"`
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling tinytemplate v1.0.1
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling criterion-plot v0.3.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling criterion v0.2.10
[INFO] [stderr]    Compiling huffman v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.41s
[INFO] running `"docker" "inspect" "f1ff3b766115e027f4e5fa2bd097a99278558212bf957ad99f2c6f9b9591a647"`
[INFO] running `"docker" "rm" "-f" "f1ff3b766115e027f4e5fa2bd097a99278558212bf957ad99f2c6f9b9591a647"`
[INFO] [stdout] f1ff3b766115e027f4e5fa2bd097a99278558212bf957ad99f2c6f9b9591a647
[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/gh/cronokirby/huffman-rs:/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] e9d73a4dabcf5713bcb9f96d443e5fb824a1dd754772549b856a4055f60738e2
[INFO] running `"docker" "start" "-a" "e9d73a4dabcf5713bcb9f96d443e5fb824a1dd754772549b856a4055f60738e2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/huffman-6d58905913639fe5
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test coding::test::huff_tree_freqs_works ... ok
[INFO] [stdout] test queue::test::inserting_preserves_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/huffman-e96782c0e0db1468
[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] [stderr]    Doc-tests huffman
[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" "e9d73a4dabcf5713bcb9f96d443e5fb824a1dd754772549b856a4055f60738e2"`
[INFO] running `"docker" "rm" "-f" "e9d73a4dabcf5713bcb9f96d443e5fb824a1dd754772549b856a4055f60738e2"`
[INFO] [stdout] e9d73a4dabcf5713bcb9f96d443e5fb824a1dd754772549b856a4055f60738e2