[INFO] updating cached repository moonglum/explore
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/moonglum/explore
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/moonglum/explore" "work/ex/beta-1.38-1/sources/1.37.0/gh/moonglum/explore"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/moonglum/explore'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/moonglum/explore" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] edbf4c09994b7a0e8538503ac41d66015ba4c4d3
[INFO] sha for GitHub repo moonglum/explore: edbf4c09994b7a0e8538503ac41d66015ba4c4d3
[INFO] validating manifest of moonglum/explore 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 moonglum/explore 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 moonglum/explore
[INFO] finished frobbing moonglum/explore
[INFO] frobbed toml for moonglum/explore written to work/ex/beta-1.38-1/sources/1.37.0/gh/moonglum/explore/Cargo.toml
[INFO] started frobbing moonglum/explore
[INFO] finished frobbing moonglum/explore
[INFO] frobbed toml for moonglum/explore written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore/Cargo.toml
[INFO] crate moonglum/explore already has a lockfile, it will not be regenerated
[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 moonglum/explore 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-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore:/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] bffbc04416b290e0255974d96da8693c2678f68976abf3add84b3c1d062e5fc0
[INFO] running `"docker" "start" "-a" "bffbc04416b290e0255974d96da8693c2678f68976abf3add84b3c1d062e5fc0"`
[INFO] [stderr]    Compiling explore v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:22:41
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn iterate_directory(dir: ReadDir, cb: &Fn(&DirEntry) -> Entry) {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DirEntry) -> Entry`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "bffbc04416b290e0255974d96da8693c2678f68976abf3add84b3c1d062e5fc0"`
[INFO] running `"docker" "rm" "-f" "bffbc04416b290e0255974d96da8693c2678f68976abf3add84b3c1d062e5fc0"`
[INFO] [stdout] bffbc04416b290e0255974d96da8693c2678f68976abf3add84b3c1d062e5fc0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore:/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] ec39a33684df7392260da7c8ff8dd7fe5f781ffc6e522d2ee72260aec1de8f66
[INFO] running `"docker" "start" "-a" "ec39a33684df7392260da7c8ff8dd7fe5f781ffc6e522d2ee72260aec1de8f66"`
[INFO] [stderr]    Compiling explore v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:22:41
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn iterate_directory(dir: ReadDir, cb: &Fn(&DirEntry) -> Entry) {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DirEntry) -> Entry`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "ec39a33684df7392260da7c8ff8dd7fe5f781ffc6e522d2ee72260aec1de8f66"`
[INFO] running `"docker" "rm" "-f" "ec39a33684df7392260da7c8ff8dd7fe5f781ffc6e522d2ee72260aec1de8f66"`
[INFO] [stdout] ec39a33684df7392260da7c8ff8dd7fe5f781ffc6e522d2ee72260aec1de8f66
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/moonglum/explore:/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] 66e3b6874ee455f982d0ba483a959aa83d31fc7fe7e945f59ba652e27d60b46c
[INFO] running `"docker" "start" "-a" "66e3b6874ee455f982d0ba483a959aa83d31fc7fe7e945f59ba652e27d60b46c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/explore-4305bf3d6888ee2c
[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" "66e3b6874ee455f982d0ba483a959aa83d31fc7fe7e945f59ba652e27d60b46c"`
[INFO] running `"docker" "rm" "-f" "66e3b6874ee455f982d0ba483a959aa83d31fc7fe7e945f59ba652e27d60b46c"`
[INFO] [stdout] 66e3b6874ee455f982d0ba483a959aa83d31fc7fe7e945f59ba652e27d60b46c