[INFO] crate HorseShoe 0.0.1 is already in cache
[INFO] extracting crate HorseShoe 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/HorseShoe/0.0.1
[INFO] extracting crate HorseShoe 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/HorseShoe/0.0.1
[INFO] validating manifest of HorseShoe-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 HorseShoe-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 HorseShoe-0.0.1
[INFO] finished frobbing HorseShoe-0.0.1
[INFO] frobbed toml for HorseShoe-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/HorseShoe/0.0.1/Cargo.toml
[INFO] started frobbing HorseShoe-0.0.1
[INFO] finished frobbing HorseShoe-0.0.1
[INFO] frobbed toml for HorseShoe-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/HorseShoe/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 HorseShoe-0.0.1 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/HorseShoe/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 07149ee634048ef85f2e34319cecc20d0c66abad875d69702fc5c7206dd24bb7
[INFO] running `"docker" "start" "-a" "07149ee634048ef85f2e34319cecc20d0c66abad875d69702fc5c7206dd24bb7"`
[INFO] [stderr]    Compiling HorseShoe v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/numder.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn numder(z: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/numint.rs:41:37
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn numint(u: Self, l: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "07149ee634048ef85f2e34319cecc20d0c66abad875d69702fc5c7206dd24bb7"`
[INFO] running `"docker" "rm" "-f" "07149ee634048ef85f2e34319cecc20d0c66abad875d69702fc5c7206dd24bb7"`
[INFO] [stdout] 07149ee634048ef85f2e34319cecc20d0c66abad875d69702fc5c7206dd24bb7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/HorseShoe/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8f473b28943ce9e2d917348ecc00659052d2634248eab15dd7b22909e06f6f9c
[INFO] running `"docker" "start" "-a" "8f473b28943ce9e2d917348ecc00659052d2634248eab15dd7b22909e06f6f9c"`
[INFO] [stderr]    Compiling HorseShoe v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/numder.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn numder(z: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/numint.rs:41:37
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn numint(u: Self, l: Self, f: &Fn(Self) -> Self) -> Self {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Self) -> Self`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "8f473b28943ce9e2d917348ecc00659052d2634248eab15dd7b22909e06f6f9c"`
[INFO] running `"docker" "rm" "-f" "8f473b28943ce9e2d917348ecc00659052d2634248eab15dd7b22909e06f6f9c"`
[INFO] [stdout] 8f473b28943ce9e2d917348ecc00659052d2634248eab15dd7b22909e06f6f9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/HorseShoe/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] dccb099d5ab7d7ffbb2a52c35238e1e5d0e0c23e8da138b0cc29a4b8e219f886
[INFO] running `"docker" "start" "-a" "dccb099d5ab7d7ffbb2a52c35238e1e5d0e0c23e8da138b0cc29a4b8e219f886"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/horseshoe-6a2f11499a19ef51
[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] [stderr]    Doc-tests horseshoe
[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" "dccb099d5ab7d7ffbb2a52c35238e1e5d0e0c23e8da138b0cc29a4b8e219f886"`
[INFO] running `"docker" "rm" "-f" "dccb099d5ab7d7ffbb2a52c35238e1e5d0e0c23e8da138b0cc29a4b8e219f886"`
[INFO] [stdout] dccb099d5ab7d7ffbb2a52c35238e1e5d0e0c23e8da138b0cc29a4b8e219f886