[INFO] crate vcf 0.1.0 is already in cache
[INFO] extracting crate vcf 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/vcf/0.1.0
[INFO] extracting crate vcf 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vcf/0.1.0
[INFO] validating manifest of vcf-0.1.0 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 vcf-0.1.0 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 vcf-0.1.0
[INFO] finished frobbing vcf-0.1.0
[INFO] frobbed toml for vcf-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/vcf/0.1.0/Cargo.toml
[INFO] started frobbing vcf-0.1.0
[INFO] finished frobbing vcf-0.1.0
[INFO] frobbed toml for vcf-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vcf/0.1.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing vcf-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vcf/0.1.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2dbe308a76f78eeb0fe9c8fcf7650ded76d1e821df74eac69686fee56c9828b8
[INFO] running `"docker" "start" "-a" "2dbe308a76f78eeb0fe9c8fcf7650ded76d1e821df74eac69686fee56c9828b8"`
[INFO] [stderr]    Compiling vcf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `encode_str_or_dot`
[INFO] [stderr]    --> src/lib.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | fn encode_str_or_dot(value: &Option<String>) -> Cow<str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `str_or_dot`
[INFO] [stderr]    --> src/lib.rs:210:1
[INFO] [stderr]     |
[INFO] [stderr] 210 | fn str_or_dot(value: &Option<String>) -> &str {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `"docker" "inspect" "2dbe308a76f78eeb0fe9c8fcf7650ded76d1e821df74eac69686fee56c9828b8"`
[INFO] running `"docker" "rm" "-f" "2dbe308a76f78eeb0fe9c8fcf7650ded76d1e821df74eac69686fee56c9828b8"`
[INFO] [stdout] 2dbe308a76f78eeb0fe9c8fcf7650ded76d1e821df74eac69686fee56c9828b8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vcf/0.1.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 32e4e3ce80038fa5fc0b5c31aee381ddd2d45048968908c8398a7bc1dcdf137f
[INFO] running `"docker" "start" "-a" "32e4e3ce80038fa5fc0b5c31aee381ddd2d45048968908c8398a7bc1dcdf137f"`
[INFO] [stderr]    Compiling vcf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read src/read/../../testfiles/bad-vcf1.vcf: No such file or directory (os error 2)
[INFO] [stderr]    --> src/read/test.rs:456:19
[INFO] [stderr]     |
[INFO] [stderr] 456 |     let bad_vcf = include_bytes!("../../testfiles/bad-vcf1.vcf");
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: couldn't read src/read/../../testfiles/bad-vcf2.vcf: No such file or directory (os error 2)
[INFO] [stderr]    --> src/read/test.rs:469:19
[INFO] [stderr]     |
[INFO] [stderr] 469 |     let bad_vcf = include_bytes!("../../testfiles/bad-vcf2.vcf");
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `vcf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "32e4e3ce80038fa5fc0b5c31aee381ddd2d45048968908c8398a7bc1dcdf137f"`
[INFO] running `"docker" "rm" "-f" "32e4e3ce80038fa5fc0b5c31aee381ddd2d45048968908c8398a7bc1dcdf137f"`
[INFO] [stdout] 32e4e3ce80038fa5fc0b5c31aee381ddd2d45048968908c8398a7bc1dcdf137f