[INFO] crate sumdir 0.2.0 is already in cache
[INFO] extracting crate sumdir 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/sumdir/0.2.0
[INFO] extracting crate sumdir 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sumdir/0.2.0
[INFO] validating manifest of sumdir-0.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sumdir-0.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sumdir-0.2.0
[INFO] finished frobbing sumdir-0.2.0
[INFO] frobbed toml for sumdir-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/sumdir/0.2.0/Cargo.toml
[INFO] started frobbing sumdir-0.2.0
[INFO] finished frobbing sumdir-0.2.0
[INFO] frobbed toml for sumdir-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sumdir/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sumdir-0.2.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sumdir/0.2.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] fa530ffa52de35cbccb937c9f4afdfa4cc35516d8d0e2937b9394d338277c277
[INFO] running `"docker" "start" "-a" "fa530ffa52de35cbccb937c9f4afdfa4cc35516d8d0e2937b9394d338277c277"`
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling blake2 v0.8.0
[INFO] [stderr]    Compiling sumdir v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `"docker" "inspect" "fa530ffa52de35cbccb937c9f4afdfa4cc35516d8d0e2937b9394d338277c277"`
[INFO] running `"docker" "rm" "-f" "fa530ffa52de35cbccb937c9f4afdfa4cc35516d8d0e2937b9394d338277c277"`
[INFO] [stdout] fa530ffa52de35cbccb937c9f4afdfa4cc35516d8d0e2937b9394d338277c277
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sumdir/0.2.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] fa450ed42abc31293bb69349cd08739f4f68390d23da0cdd7155031788d04456
[INFO] running `"docker" "start" "-a" "fa450ed42abc31293bb69349cd08739f4f68390d23da0cdd7155031788d04456"`
[INFO] [stderr]    Compiling sumdir v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "fa450ed42abc31293bb69349cd08739f4f68390d23da0cdd7155031788d04456"`
[INFO] running `"docker" "rm" "-f" "fa450ed42abc31293bb69349cd08739f4f68390d23da0cdd7155031788d04456"`
[INFO] [stdout] fa450ed42abc31293bb69349cd08739f4f68390d23da0cdd7155031788d04456
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/sumdir/0.2.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] c3ee71c296ac193de347491d48e48622efd6d9a2b077f32e7f29af596dd8c48a
[INFO] running `"docker" "start" "-a" "c3ee71c296ac193de347491d48e48622efd6d9a2b077f32e7f29af596dd8c48a"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sumdir-046f4871fd6d7893
[INFO] [stdout] test tests::test_dir_hash ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sumdir
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - dir_hash (line 10) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - dir_hash (line 10) stdout ----
[INFO] [stdout] error[E0277]: can't compare `&str` with `std::result::Result<std::string::String, std::io::Error>`
[INFO] [stdout]  --> src/lib.rs:13:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | assert_eq!("{}", sumdir::dir_hash("test-checksum"));
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `&str == std::result::Result<std::string::String, std::io::Error>`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::cmp::PartialEq<std::result::Result<std::string::String, std::io::Error>>` is not implemented for `&str`
[INFO] [stdout]   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - dir_hash (line 10)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "c3ee71c296ac193de347491d48e48622efd6d9a2b077f32e7f29af596dd8c48a"`
[INFO] running `"docker" "rm" "-f" "c3ee71c296ac193de347491d48e48622efd6d9a2b077f32e7f29af596dd8c48a"`
[INFO] [stdout] c3ee71c296ac193de347491d48e48622efd6d9a2b077f32e7f29af596dd8c48a