[INFO] updating cached repository basile-henry/huffman
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/basile-henry/huffman
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/basile-henry/huffman" "work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/basile-henry/huffman" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/basile-henry/huffman"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/basile-henry/huffman'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1d27e547e8aa99f8012e0483996e8f28c88f2379
[INFO] sha for GitHub repo basile-henry/huffman: 1d27e547e8aa99f8012e0483996e8f28c88f2379
[INFO] validating manifest of basile-henry/huffman 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 basile-henry/huffman 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 basile-henry/huffman
[INFO] finished frobbing basile-henry/huffman
[INFO] frobbed toml for basile-henry/huffman written to work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman/Cargo.toml
[INFO] started frobbing basile-henry/huffman
[INFO] finished frobbing basile-henry/huffman
[INFO] frobbed toml for basile-henry/huffman written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/basile-henry/huffman/Cargo.toml
[INFO] crate basile-henry/huffman 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 basile-henry/huffman 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman:/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] ec9b5a40df401b4d7776837eeb710fb51df9da6d4400fc961e226215e5327232
[INFO] running `"docker" "start" "-a" "ec9b5a40df401b4d7776837eeb710fb51df9da6d4400fc961e226215e5327232"`
[INFO] [stderr]    Compiling huffman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/huffman.rs:57:16
[INFO] [stderr]    |
[INFO] [stderr] 57 |     bits: &mut Iterator<Item = bool>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = bool>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `decoded`
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let decoded = huffman::decode(&key, &encoded);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_decoded`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `"docker" "inspect" "ec9b5a40df401b4d7776837eeb710fb51df9da6d4400fc961e226215e5327232"`
[INFO] running `"docker" "rm" "-f" "ec9b5a40df401b4d7776837eeb710fb51df9da6d4400fc961e226215e5327232"`
[INFO] [stdout] ec9b5a40df401b4d7776837eeb710fb51df9da6d4400fc961e226215e5327232
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman:/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] cf827329ad6469c8a0dd16f3045936cb60b5428bed5b90c3a4be8e9780500c1f
[INFO] running `"docker" "start" "-a" "cf827329ad6469c8a0dd16f3045936cb60b5428bed5b90c3a4be8e9780500c1f"`
[INFO] [stderr]    Compiling huffman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/huffman.rs:57:16
[INFO] [stderr]    |
[INFO] [stderr] 57 |     bits: &mut Iterator<Item = bool>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = bool>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `decoded`
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let decoded = huffman::decode(&key, &encoded);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_decoded`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "cf827329ad6469c8a0dd16f3045936cb60b5428bed5b90c3a4be8e9780500c1f"`
[INFO] running `"docker" "rm" "-f" "cf827329ad6469c8a0dd16f3045936cb60b5428bed5b90c3a4be8e9780500c1f"`
[INFO] [stdout] cf827329ad6469c8a0dd16f3045936cb60b5428bed5b90c3a4be8e9780500c1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/basile-henry/huffman:/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] cc1bed2d2064548f10cb88cbc57279f0e906dd25f980b0a962f39a53b78f8ce5
[INFO] running `"docker" "start" "-a" "cc1bed2d2064548f10cb88cbc57279f0e906dd25f980b0a962f39a53b78f8ce5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/huffman-b7265dc2ac75381c
[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" "cc1bed2d2064548f10cb88cbc57279f0e906dd25f980b0a962f39a53b78f8ce5"`
[INFO] running `"docker" "rm" "-f" "cc1bed2d2064548f10cb88cbc57279f0e906dd25f980b0a962f39a53b78f8ce5"`
[INFO] [stdout] cc1bed2d2064548f10cb88cbc57279f0e906dd25f980b0a962f39a53b78f8ce5