[INFO] crate ignite 0.1.6 is already in cache
[INFO] extracting crate ignite 0.1.6 into work/ex/beta-1.38-1/sources/1.37.0/reg/ignite/0.1.6
[INFO] extracting crate ignite 0.1.6 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ignite/0.1.6
[INFO] validating manifest of ignite-0.1.6 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 ignite-0.1.6 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 ignite-0.1.6
[INFO] finished frobbing ignite-0.1.6
[INFO] frobbed toml for ignite-0.1.6 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ignite/0.1.6/Cargo.toml
[INFO] started frobbing ignite-0.1.6
[INFO] finished frobbing ignite-0.1.6
[INFO] frobbed toml for ignite-0.1.6 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ignite/0.1.6/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 ignite-0.1.6 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-2/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/ignite/0.1.6:/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] 553130cccd785ed805a1b339cfcab4686ba61ff5eab2f57921878a3851b808f1
[INFO] running `"docker" "start" "-a" "553130cccd785ed805a1b339cfcab4686ba61ff5eab2f57921878a3851b808f1"`
[INFO] [stderr]    Compiling ignite v0.1.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "553130cccd785ed805a1b339cfcab4686ba61ff5eab2f57921878a3851b808f1"`
[INFO] running `"docker" "rm" "-f" "553130cccd785ed805a1b339cfcab4686ba61ff5eab2f57921878a3851b808f1"`
[INFO] [stdout] 553130cccd785ed805a1b339cfcab4686ba61ff5eab2f57921878a3851b808f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/ignite/0.1.6:/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] 457a00f66b5b0b2225c282a82849de7ce7a02855776a664528bab1fa9254f4b9
[INFO] running `"docker" "start" "-a" "457a00f66b5b0b2225c282a82849de7ce7a02855776a664528bab1fa9254f4b9"`
[INFO] [stderr]    Compiling ignite v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] error[E0658]: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]  --> src/benches/log.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[bench]
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `test`
[INFO] [stderr]  --> src/benches/log.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use test::Bencher;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     unresolved import
[INFO] [stderr]   |     help: a similar path exists: `tests::log::test::test`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `ignite`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "457a00f66b5b0b2225c282a82849de7ce7a02855776a664528bab1fa9254f4b9"`
[INFO] running `"docker" "rm" "-f" "457a00f66b5b0b2225c282a82849de7ce7a02855776a664528bab1fa9254f4b9"`
[INFO] [stdout] 457a00f66b5b0b2225c282a82849de7ce7a02855776a664528bab1fa9254f4b9