[INFO] crate bl_save 0.2.0 is already in cache
[INFO] extracting crate bl_save 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/bl_save/0.2.0
[INFO] extracting crate bl_save 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bl_save/0.2.0
[INFO] validating manifest of bl_save-0.2.0 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 bl_save-0.2.0 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 bl_save-0.2.0
[INFO] finished frobbing bl_save-0.2.0
[INFO] frobbed toml for bl_save-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bl_save/0.2.0/Cargo.toml
[INFO] started frobbing bl_save-0.2.0
[INFO] finished frobbing bl_save-0.2.0
[INFO] frobbed toml for bl_save-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bl_save/0.2.0/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 bl_save-0.2.0 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bl_save/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 05cc3d977352b42b548b3f5208b2cc0ffa821035c9d68ff2e6a5a78c215e0edc
[INFO] running `"docker" "start" "-a" "05cc3d977352b42b548b3f5208b2cc0ffa821035c9d68ff2e6a5a78c215e0edc"`
[INFO] [stderr]    Compiling bl_save v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `"docker" "inspect" "05cc3d977352b42b548b3f5208b2cc0ffa821035c9d68ff2e6a5a78c215e0edc"`
[INFO] running `"docker" "rm" "-f" "05cc3d977352b42b548b3f5208b2cc0ffa821035c9d68ff2e6a5a78c215e0edc"`
[INFO] [stdout] 05cc3d977352b42b548b3f5208b2cc0ffa821035c9d68ff2e6a5a78c215e0edc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bl_save/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] fe00ccde8dfdb270e9be2ff97a78cd1fe9893486f30ba95e73877cd2a03f0bfb
[INFO] running `"docker" "start" "-a" "fe00ccde8dfdb270e9be2ff97a78cd1fe9893486f30ba95e73877cd2a03f0bfb"`
[INFO] [stderr]    Compiling bl_save v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "fe00ccde8dfdb270e9be2ff97a78cd1fe9893486f30ba95e73877cd2a03f0bfb"`
[INFO] running `"docker" "rm" "-f" "fe00ccde8dfdb270e9be2ff97a78cd1fe9893486f30ba95e73877cd2a03f0bfb"`
[INFO] [stdout] fe00ccde8dfdb270e9be2ff97a78cd1fe9893486f30ba95e73877cd2a03f0bfb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bl_save/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] c91c3969332fce5621741b728865d83f47cf7e0e9f12531e5e320b60cd9334eb
[INFO] running `"docker" "start" "-a" "c91c3969332fce5621741b728865d83f47cf7e0e9f12531e5e320b60cd9334eb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bl_save-162f08d50fee677f
[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]      Running /opt/crater/target/debug/deps/print-5e8a3f87ea21670e
[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 bl_save
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs -  (line 8) ... FAILED
[INFO] [stdout] test src/read.rs - read::Reader<R>::new (line 28) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 8) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufReader`
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |            ^^^^^^^^^ use of undeclared type or module `BufReader`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]  --> src/lib.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |                           ^^^^ use of undeclared type or module `File`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/lib.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/lib.rs:10:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | let reader = bl_save::Reader::new(file)?;
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&str` is not an iterator
[INFO] [stdout]  --> src/lib.rs:12:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | for line in reader.description() {
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^ `&str` is not an iterator; try calling `.chars()` or `.bytes()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::iter::Iterator` is not implemented for `&str`
[INFO] [stdout]   = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::option::Option<usize>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/lib.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 12 | println!("Brick count: {}", reader.brick_count());
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^ `std::option::Option<usize>` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `std::option::Option<usize>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: required by `std::fmt::Display::fmt`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let brick = brick?;
[INFO] [stdout]    |                 ^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/read.rs - read::Reader<R>::new (line 28) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufReader`
[INFO] [stdout]  --> src/read.rs:29:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |            ^^^^^^^^^ use of undeclared type or module `BufReader`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]  --> src/read.rs:29:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |                           ^^^^ use of undeclared type or module `File`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/read.rs:29:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | let file = BufReader::new(File::open("House.bls")?);
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/read.rs:30:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | let reader = bl_save::Reader::new(file)?;
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 8)
[INFO] [stdout]     src/read.rs - read::Reader<R>::new (line 28)
[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" "c91c3969332fce5621741b728865d83f47cf7e0e9f12531e5e320b60cd9334eb"`
[INFO] running `"docker" "rm" "-f" "c91c3969332fce5621741b728865d83f47cf7e0e9f12531e5e320b60cd9334eb"`
[INFO] [stdout] c91c3969332fce5621741b728865d83f47cf7e0e9f12531e5e320b60cd9334eb