[INFO] crate bibtex 0.0.1 is already in cache
[INFO] extracting crate bibtex 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/bibtex/0.0.1
[INFO] extracting crate bibtex 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bibtex/0.0.1
[INFO] validating manifest of bibtex-0.0.1 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 bibtex-0.0.1 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 bibtex-0.0.1
[INFO] finished frobbing bibtex-0.0.1
[INFO] frobbed toml for bibtex-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bibtex/0.0.1/Cargo.toml
[INFO] started frobbing bibtex-0.0.1
[INFO] finished frobbing bibtex-0.0.1
[INFO] frobbed toml for bibtex-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bibtex/0.0.1/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 bibtex-0.0.1 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/bibtex/0.0.1:/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] 786796aee503ff8ba034110507e4029fdd5de70313d616d97ccbd1bb3a3f4ee3
[INFO] running `"docker" "start" "-a" "786796aee503ff8ba034110507e4029fdd5de70313d616d97ccbd1bb3a3f4ee3"`
[INFO] [stderr]    Compiling bibtex v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `cite_key`
[INFO] [stderr]   --> src/entry.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn cite_key(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `entry_type`
[INFO] [stderr]   --> src/entry.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn entry_type(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `field`
[INFO] [stderr]   --> src/entry.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "786796aee503ff8ba034110507e4029fdd5de70313d616d97ccbd1bb3a3f4ee3"`
[INFO] running `"docker" "rm" "-f" "786796aee503ff8ba034110507e4029fdd5de70313d616d97ccbd1bb3a3f4ee3"`
[INFO] [stdout] 786796aee503ff8ba034110507e4029fdd5de70313d616d97ccbd1bb3a3f4ee3
[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/bibtex/0.0.1:/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] 6b9274457306aa1a7fd260e9d194041e131c5300533dd0987c76208d6e823943
[INFO] running `"docker" "start" "-a" "6b9274457306aa1a7fd260e9d194041e131c5300533dd0987c76208d6e823943"`
[INFO] [stderr]    Compiling bibtex v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `cite_key`
[INFO] [stderr]   --> src/entry.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn cite_key(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `entry_type`
[INFO] [stderr]   --> src/entry.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn entry_type(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `field`
[INFO] [stderr]   --> src/entry.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "6b9274457306aa1a7fd260e9d194041e131c5300533dd0987c76208d6e823943"`
[INFO] running `"docker" "rm" "-f" "6b9274457306aa1a7fd260e9d194041e131c5300533dd0987c76208d6e823943"`
[INFO] [stdout] 6b9274457306aa1a7fd260e9d194041e131c5300533dd0987c76208d6e823943
[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/bibtex/0.0.1:/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"`
[INFO] [stdout] 1097ead292355b5087669cbc3e962eb16abc7fdc8dea42c5502974c0e145ff5f
[INFO] running `"docker" "start" "-a" "1097ead292355b5087669cbc3e962eb16abc7fdc8dea42c5502974c0e145ff5f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bibtex-d4a3fb3033df1102
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::serialization ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bibtex
[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" "1097ead292355b5087669cbc3e962eb16abc7fdc8dea42c5502974c0e145ff5f"`
[INFO] running `"docker" "rm" "-f" "1097ead292355b5087669cbc3e962eb16abc7fdc8dea42c5502974c0e145ff5f"`
[INFO] [stdout] 1097ead292355b5087669cbc3e962eb16abc7fdc8dea42c5502974c0e145ff5f