[INFO] crate lzw 0.10.0 is already in cache
[INFO] extracting crate lzw 0.10.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/lzw/0.10.0
[INFO] extracting crate lzw 0.10.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/lzw/0.10.0
[INFO] validating manifest of lzw-0.10.0 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 lzw-0.10.0 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 lzw-0.10.0
[INFO] finished frobbing lzw-0.10.0
[INFO] frobbed toml for lzw-0.10.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/lzw/0.10.0/Cargo.toml
[INFO] started frobbing lzw-0.10.0
[INFO] finished frobbing lzw-0.10.0
[INFO] frobbed toml for lzw-0.10.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/lzw/0.10.0/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 lzw-0.10.0 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lzw/0.10.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2f1808d7deeaa50739633c2dc335231b72019c5b03dc95ab41a92a2ef92edfd2
[INFO] running `"docker" "start" "-a" "2f1808d7deeaa50739633c2dc335231b72019c5b03dc95ab41a92a2ef92edfd2"`
[INFO] [stderr]    Compiling lzw v0.10.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lzw.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "2f1808d7deeaa50739633c2dc335231b72019c5b03dc95ab41a92a2ef92edfd2"`
[INFO] running `"docker" "rm" "-f" "2f1808d7deeaa50739633c2dc335231b72019c5b03dc95ab41a92a2ef92edfd2"`
[INFO] [stdout] 2f1808d7deeaa50739633c2dc335231b72019c5b03dc95ab41a92a2ef92edfd2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lzw/0.10.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6c571902337375dc0755866e7f8e3230ad8b763155d9f1c356ab56a8328fa205
[INFO] running `"docker" "start" "-a" "6c571902337375dc0755866e7f8e3230ad8b763155d9f1c356ab56a8328fa205"`
[INFO] [stderr]    Compiling lzw v0.10.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lzw.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "6c571902337375dc0755866e7f8e3230ad8b763155d9f1c356ab56a8328fa205"`
[INFO] running `"docker" "rm" "-f" "6c571902337375dc0755866e7f8e3230ad8b763155d9f1c356ab56a8328fa205"`
[INFO] [stdout] 6c571902337375dc0755866e7f8e3230ad8b763155d9f1c356ab56a8328fa205
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lzw/0.10.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 31294aae051591608e966e86d25a3c5b413e93841d1945159b6adf08a8f42997
[INFO] running `"docker" "start" "-a" "31294aae051591608e966e86d25a3c5b413e93841d1945159b6adf08a8f42997"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lzw-4a03e030cd010085
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test bitstream::test::reader_writer ... ok
[INFO] [stdout] test lzw::round_trip ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lzw
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "31294aae051591608e966e86d25a3c5b413e93841d1945159b6adf08a8f42997"`
[INFO] running `"docker" "rm" "-f" "31294aae051591608e966e86d25a3c5b413e93841d1945159b6adf08a8f42997"`
[INFO] [stdout] 31294aae051591608e966e86d25a3c5b413e93841d1945159b6adf08a8f42997