[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 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-6/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/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 9a4bc985c994375a196526b287300cc09186932985227bbff7f7f5d40287f19b
[INFO] running `"docker" "start" "-a" "9a4bc985c994375a196526b287300cc09186932985227bbff7f7f5d40287f19b"`
[INFO] [stderr]    Compiling muff v0.1.4 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "9a4bc985c994375a196526b287300cc09186932985227bbff7f7f5d40287f19b"`
[INFO] running `"docker" "rm" "-f" "9a4bc985c994375a196526b287300cc09186932985227bbff7f7f5d40287f19b"`
[INFO] [stdout] 9a4bc985c994375a196526b287300cc09186932985227bbff7f7f5d40287f19b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2238a63a0484bcb4a292d7779b129c0dfd030530e0160201b6d2eb46c994f2e8
[INFO] running `"docker" "start" "-a" "2238a63a0484bcb4a292d7779b129c0dfd030530e0160201b6d2eb46c994f2e8"`
[INFO] [stderr]    Compiling muff v0.1.4 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "2238a63a0484bcb4a292d7779b129c0dfd030530e0160201b6d2eb46c994f2e8"`
[INFO] running `"docker" "rm" "-f" "2238a63a0484bcb4a292d7779b129c0dfd030530e0160201b6d2eb46c994f2e8"`
[INFO] [stdout] 2238a63a0484bcb4a292d7779b129c0dfd030530e0160201b6d2eb46c994f2e8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] a58f3d0010cce4f8da503121826f817124c1d871a28132ca0eb0db3d3647c46f
[INFO] running `"docker" "start" "-a" "a58f3d0010cce4f8da503121826f817124c1d871a28132ca0eb0db3d3647c46f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/muff-f1d6d11d36c8e755
[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" "a58f3d0010cce4f8da503121826f817124c1d871a28132ca0eb0db3d3647c46f"`
[INFO] running `"docker" "rm" "-f" "a58f3d0010cce4f8da503121826f817124c1d871a28132ca0eb0db3d3647c46f"`
[INFO] [stdout] a58f3d0010cce4f8da503121826f817124c1d871a28132ca0eb0db3d3647c46f