[INFO] crate mrusta 0.0.1 is already in cache
[INFO] extracting crate mrusta 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/mrusta/0.0.1
[INFO] extracting crate mrusta 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mrusta/0.0.1
[INFO] validating manifest of mrusta-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 mrusta-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 mrusta-0.0.1
[INFO] finished frobbing mrusta-0.0.1
[INFO] frobbed toml for mrusta-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mrusta/0.0.1/Cargo.toml
[INFO] started frobbing mrusta-0.0.1
[INFO] finished frobbing mrusta-0.0.1
[INFO] frobbed toml for mrusta-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mrusta/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 mrusta-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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mrusta/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] 94375d092f18e7abed8f8c0ce711c9c99437eb3de38265f547fec015ba5ae5ad
[INFO] running `"docker" "start" "-a" "94375d092f18e7abed8f8c0ce711c9c99437eb3de38265f547fec015ba5ae5ad"`
[INFO] [stderr]    Compiling mrusta v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]  --> src/types.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     value: u32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `"docker" "inspect" "94375d092f18e7abed8f8c0ce711c9c99437eb3de38265f547fec015ba5ae5ad"`
[INFO] running `"docker" "rm" "-f" "94375d092f18e7abed8f8c0ce711c9c99437eb3de38265f547fec015ba5ae5ad"`
[INFO] [stdout] 94375d092f18e7abed8f8c0ce711c9c99437eb3de38265f547fec015ba5ae5ad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mrusta/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] fa54d186da1bda897eb408c07307e2631dcc41745e96f8a47868896269d01d1b
[INFO] running `"docker" "start" "-a" "fa54d186da1bda897eb408c07307e2631dcc41745e96f8a47868896269d01d1b"`
[INFO] [stderr]    Compiling mrusta v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]  --> src/types.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     value: u32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "fa54d186da1bda897eb408c07307e2631dcc41745e96f8a47868896269d01d1b"`
[INFO] running `"docker" "rm" "-f" "fa54d186da1bda897eb408c07307e2631dcc41745e96f8a47868896269d01d1b"`
[INFO] [stdout] fa54d186da1bda897eb408c07307e2631dcc41745e96f8a47868896269d01d1b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mrusta/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] fc591f66827a287fd04d3f76789a20290ad65abcae036f231c34e984cd7dc4cf
[INFO] running `"docker" "start" "-a" "fc591f66827a287fd04d3f76789a20290ad65abcae036f231c34e984cd7dc4cf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mrusta-0ee64279227b5b69
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test utils::tests::it_reduces_one ... ok
[INFO] [stderr]    Doc-tests mrusta
[INFO] [stdout] test utils::tests::it_adds_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/utils.rs - utils::fns::minus_one (line 19) ... FAILED
[INFO] [stdout] test src/utils.rs - utils::fns::plus_one (line 6) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/utils.rs - utils::fns::minus_one (line 19) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `nafsy`
[INFO] [stdout]  --> src/utils.rs:22:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | assert_eq!(4, nafsy::minus_one(five));
[INFO] [stdout]   |               ^^^^^ use of undeclared type or module `nafsy`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/utils.rs - utils::fns::plus_one (line 6) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `nafsy`
[INFO] [stdout]  --> src/utils.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | assert_eq!(6, nafsy::plus_one(five));
[INFO] [stdout]   |               ^^^^^ use of undeclared type or module `nafsy`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/utils.rs - utils::fns::minus_one (line 19)
[INFO] [stdout]     src/utils.rs - utils::fns::plus_one (line 6)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "fc591f66827a287fd04d3f76789a20290ad65abcae036f231c34e984cd7dc4cf"`
[INFO] running `"docker" "rm" "-f" "fc591f66827a287fd04d3f76789a20290ad65abcae036f231c34e984cd7dc4cf"`
[INFO] [stdout] fc591f66827a287fd04d3f76789a20290ad65abcae036f231c34e984cd7dc4cf