[INFO] crate muff 0.1.4 is already in cache
[INFO] extracting crate muff 0.1.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/muff/0.1.4
[INFO] extracting crate muff 0.1.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/muff/0.1.4
[INFO] validating manifest of muff-0.1.4 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 muff-0.1.4 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 muff-0.1.4
[INFO] finished frobbing muff-0.1.4
[INFO] frobbed toml for muff-0.1.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/muff/0.1.4/Cargo.toml
[INFO] started frobbing muff-0.1.4
[INFO] finished frobbing muff-0.1.4
[INFO] frobbed toml for muff-0.1.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/muff/0.1.4/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 muff-0.1.4 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/muff/0.1.4:/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] 39a9a98b5c889a8a4e7948604da4dd81cc194d4da5a69280679ddc3bc6c969af
[INFO] running `"docker" "start" "-a" "39a9a98b5c889a8a4e7948604da4dd81cc194d4da5a69280679ddc3bc6c969af"`
[INFO] [stderr]    Compiling muff v0.1.4 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "39a9a98b5c889a8a4e7948604da4dd81cc194d4da5a69280679ddc3bc6c969af"`
[INFO] running `"docker" "rm" "-f" "39a9a98b5c889a8a4e7948604da4dd81cc194d4da5a69280679ddc3bc6c969af"`
[INFO] [stdout] 39a9a98b5c889a8a4e7948604da4dd81cc194d4da5a69280679ddc3bc6c969af
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/muff/0.1.4:/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] e55e699a2d9d17d6f87d3d1e6477a02a12fc712c200fe9ec909a63af68e3b8d3
[INFO] running `"docker" "start" "-a" "e55e699a2d9d17d6f87d3d1e6477a02a12fc712c200fe9ec909a63af68e3b8d3"`
[INFO] [stderr]    Compiling muff v0.1.4 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "e55e699a2d9d17d6f87d3d1e6477a02a12fc712c200fe9ec909a63af68e3b8d3"`
[INFO] running `"docker" "rm" "-f" "e55e699a2d9d17d6f87d3d1e6477a02a12fc712c200fe9ec909a63af68e3b8d3"`
[INFO] [stdout] e55e699a2d9d17d6f87d3d1e6477a02a12fc712c200fe9ec909a63af68e3b8d3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/muff/0.1.4:/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] 22ebe943a137edac86ee67a560d151ab1ba04846944503d01d1d4c8a33ebd8d2
[INFO] running `"docker" "start" "-a" "22ebe943a137edac86ee67a560d151ab1ba04846944503d01d1d4c8a33ebd8d2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/muff-f89b2f9e201b0971
[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" "22ebe943a137edac86ee67a560d151ab1ba04846944503d01d1d4c8a33ebd8d2"`
[INFO] running `"docker" "rm" "-f" "22ebe943a137edac86ee67a560d151ab1ba04846944503d01d1d4c8a33ebd8d2"`
[INFO] [stdout] 22ebe943a137edac86ee67a560d151ab1ba04846944503d01d1d4c8a33ebd8d2