[INFO] crate lopdf_bugfix_19072017 0.9.0 is already in cache
[INFO] extracting crate lopdf_bugfix_19072017 0.9.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/lopdf_bugfix_19072017/0.9.0
[INFO] extracting crate lopdf_bugfix_19072017 0.9.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/lopdf_bugfix_19072017/0.9.0
[INFO] validating manifest of lopdf_bugfix_19072017-0.9.0 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 lopdf_bugfix_19072017-0.9.0 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 lopdf_bugfix_19072017-0.9.0
[INFO] finished frobbing lopdf_bugfix_19072017-0.9.0
[INFO] frobbed toml for lopdf_bugfix_19072017-0.9.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/lopdf_bugfix_19072017/0.9.0/Cargo.toml
[INFO] started frobbing lopdf_bugfix_19072017-0.9.0
[INFO] finished frobbing lopdf_bugfix_19072017-0.9.0
[INFO] frobbed toml for lopdf_bugfix_19072017-0.9.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/lopdf_bugfix_19072017/0.9.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lopdf_bugfix_19072017-0.9.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/lopdf_bugfix_19072017/0.9.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 6b1a58e7f9b69f5c529549770f4d428491358223c3db3b851bc3eb6e7363f69d
[INFO] running `"docker" "start" "-a" "6b1a58e7f9b69f5c529549770f4d428491358223c3db3b851bc3eb6e7363f69d"`
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling pom v1.1.0
[INFO] [stderr]    Compiling lopdf_bugfix_19072017 v0.9.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/filters/png.rs:122:42
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 current[i] = current[i].wrapping_sub((current[i - bpp].wrapping_add(previous[i]) / 2));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.81s
[INFO] running `"docker" "inspect" "6b1a58e7f9b69f5c529549770f4d428491358223c3db3b851bc3eb6e7363f69d"`
[INFO] running `"docker" "rm" "-f" "6b1a58e7f9b69f5c529549770f4d428491358223c3db3b851bc3eb6e7363f69d"`
[INFO] [stdout] 6b1a58e7f9b69f5c529549770f4d428491358223c3db3b851bc3eb6e7363f69d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/lopdf_bugfix_19072017/0.9.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e73b878557ada7a974bcb9d29c4510f37ca4706d27992f00bbde1970e92e83ac
[INFO] running `"docker" "start" "-a" "e73b878557ada7a974bcb9d29c4510f37ca4706d27992f00bbde1970e92e83ac"`
[INFO] [stderr]    Compiling lopdf_bugfix_19072017 v0.9.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `lopdf`
[INFO] [stderr]  --> tests/modify.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate lopdf;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `lopdf_bugfix_19072017`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/filters/png.rs:122:42
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 current[i] = current[i].wrapping_sub((current[i - bpp].wrapping_add(previous[i]) / 2));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e73b878557ada7a974bcb9d29c4510f37ca4706d27992f00bbde1970e92e83ac"`
[INFO] running `"docker" "rm" "-f" "e73b878557ada7a974bcb9d29c4510f37ca4706d27992f00bbde1970e92e83ac"`
[INFO] [stdout] e73b878557ada7a974bcb9d29c4510f37ca4706d27992f00bbde1970e92e83ac