[INFO] crate better-panic 0.1.2 is already in cache
[INFO] extracting crate better-panic 0.1.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/better-panic/0.1.2
[INFO] extracting crate better-panic 0.1.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/better-panic/0.1.2
[INFO] validating manifest of better-panic-0.1.2 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 better-panic-0.1.2 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 better-panic-0.1.2
[INFO] finished frobbing better-panic-0.1.2
[INFO] frobbed toml for better-panic-0.1.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/better-panic/0.1.2/Cargo.toml
[INFO] started frobbing better-panic-0.1.2
[INFO] finished frobbing better-panic-0.1.2
[INFO] frobbed toml for better-panic-0.1.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/better-panic/0.1.2/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 better-panic-0.1.2 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-4/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/better-panic/0.1.2:/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] 03e1c473f5e9bc9480961f44b7418f102334d9a7e86e54aec79f10b311e5b6ee
[INFO] running `"docker" "start" "-a" "03e1c473f5e9bc9480961f44b7418f102334d9a7e86e54aec79f10b311e5b6ee"`
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling better-panic v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "03e1c473f5e9bc9480961f44b7418f102334d9a7e86e54aec79f10b311e5b6ee"`
[INFO] running `"docker" "rm" "-f" "03e1c473f5e9bc9480961f44b7418f102334d9a7e86e54aec79f10b311e5b6ee"`
[INFO] [stdout] 03e1c473f5e9bc9480961f44b7418f102334d9a7e86e54aec79f10b311e5b6ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/better-panic/0.1.2:/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] b27d09321f1d6bcbc61dd4ef501fcec9f2aa584335c8acefc0fc7af3f2c5f4b9
[INFO] running `"docker" "start" "-a" "b27d09321f1d6bcbc61dd4ef501fcec9f2aa584335c8acefc0fc7af3f2c5f4b9"`
[INFO] [stderr]    Compiling better-panic v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "b27d09321f1d6bcbc61dd4ef501fcec9f2aa584335c8acefc0fc7af3f2c5f4b9"`
[INFO] running `"docker" "rm" "-f" "b27d09321f1d6bcbc61dd4ef501fcec9f2aa584335c8acefc0fc7af3f2c5f4b9"`
[INFO] [stdout] b27d09321f1d6bcbc61dd4ef501fcec9f2aa584335c8acefc0fc7af3f2c5f4b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/better-panic/0.1.2:/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] 01a50eff7ddb4c96bb3f203f0ec32f9ef98a6a780f3d460c2e959dec9abda63e
[INFO] running `"docker" "start" "-a" "01a50eff7ddb4c96bb3f203f0ec32f9ef98a6a780f3d460c2e959dec9abda63e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/better_panic-adbf7d66af9799c5
[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] [stderr]    Doc-tests better-panic
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 17) ... 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" "01a50eff7ddb4c96bb3f203f0ec32f9ef98a6a780f3d460c2e959dec9abda63e"`
[INFO] running `"docker" "rm" "-f" "01a50eff7ddb4c96bb3f203f0ec32f9ef98a6a780f3d460c2e959dec9abda63e"`
[INFO] [stdout] 01a50eff7ddb4c96bb3f203f0ec32f9ef98a6a780f3d460c2e959dec9abda63e